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authorLinus Torvalds <torvalds@linux-foundation.org>2014-10-14 03:47:00 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2014-10-14 03:47:00 +0200
commit1ee07ef6b5db7235b133ee257a3adf507697e6b3 (patch)
tree9c7a00cf98462c2a70610da9d09770c835ef8fcd /arch
parent77654908ff1a58cee4886298968b5262884aff0b (diff)
parent0cccdda8d1512af4d3f6913044e8c8e58e15ef37 (diff)
downloadlinux-1ee07ef6b5db7235b133ee257a3adf507697e6b3.tar.bz2
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux
Pull s390 updates from Martin Schwidefsky: "This patch set contains the main portion of the changes for 3.18 in regard to the s390 architecture. It is a bit bigger than usual, mainly because of a new driver and the vector extension patches. The interesting bits are: - Quite a bit of work on the tracing front. Uprobes is enabled and the ftrace code is reworked to get some of the lost performance back if CONFIG_FTRACE is enabled. - To improve boot time with CONFIG_DEBIG_PAGEALLOC, support for the IPTE range facility is added. - The rwlock code is re-factored to improve writer fairness and to be able to use the interlocked-access instructions. - The kernel part for the support of the vector extension is added. - The device driver to access the CD/DVD on the HMC is added, this will hopefully come in handy to improve the installation process. - Add support for control-unit initiated reconfiguration. - The crypto device driver is enhanced to enable the additional AP domains and to allow the new crypto hardware to be used. - Bug fixes" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (39 commits) s390/ftrace: simplify enabling/disabling of ftrace_graph_caller s390/ftrace: remove 31 bit ftrace support s390/kdump: add support for vector extension s390/disassembler: add vector instructions s390: add support for vector extension s390/zcrypt: Toleration of new crypto hardware s390/idle: consolidate idle functions and definitions s390/nohz: use a per-cpu flag for arch_needs_cpu s390/vtime: do not reset idle data on CPU hotplug s390/dasd: add support for control unit initiated reconfiguration s390/dasd: fix infinite loop during format s390/mm: make use of ipte range facility s390/setup: correct 4-level kernel page table detection s390/topology: call set_sched_topology early s390/uprobes: architecture backend for uprobes s390/uprobes: common library for kprobes and uprobes s390/rwlock: use the interlocked-access facility 1 instructions s390/rwlock: improve writer fairness s390/rwlock: remove interrupt-enabling rwlock variant. s390/mm: remove change bit override support ...
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/Kconfig11
-rw-r--r--arch/s390/Makefile17
-rw-r--r--arch/s390/include/asm/barrier.h6
-rw-r--r--arch/s390/include/asm/cputime.h26
-rw-r--r--arch/s390/include/asm/dis.h13
-rw-r--r--arch/s390/include/asm/elf.h3
-rw-r--r--arch/s390/include/asm/ftrace.h9
-rw-r--r--arch/s390/include/asm/idle.h26
-rw-r--r--arch/s390/include/asm/ipl.h4
-rw-r--r--arch/s390/include/asm/irq.h1
-rw-r--r--arch/s390/include/asm/kprobes.h4
-rw-r--r--arch/s390/include/asm/lowcore.h21
-rw-r--r--arch/s390/include/asm/nmi.h2
-rw-r--r--arch/s390/include/asm/pgtable.h25
-rw-r--r--arch/s390/include/asm/processor.h12
-rw-r--r--arch/s390/include/asm/ptrace.h6
-rw-r--r--arch/s390/include/asm/setup.h6
-rw-r--r--arch/s390/include/asm/sigp.h6
-rw-r--r--arch/s390/include/asm/smp.h2
-rw-r--r--arch/s390/include/asm/spinlock.h135
-rw-r--r--arch/s390/include/asm/spinlock_types.h1
-rw-r--r--arch/s390/include/asm/switch_to.h61
-rw-r--r--arch/s390/include/asm/thread_info.h3
-rw-r--r--arch/s390/include/asm/uprobes.h42
-rw-r--r--arch/s390/include/asm/vdso.h18
-rw-r--r--arch/s390/include/asm/vtimer.h2
-rw-r--r--arch/s390/include/uapi/asm/sigcontext.h20
-rw-r--r--arch/s390/include/uapi/asm/types.h4
-rw-r--r--arch/s390/include/uapi/asm/ucontext.h15
-rw-r--r--arch/s390/kernel/Makefile8
-rw-r--r--arch/s390/kernel/asm-offsets.c9
-rw-r--r--arch/s390/kernel/compat_linux.h9
-rw-r--r--arch/s390/kernel/compat_signal.c212
-rw-r--r--arch/s390/kernel/crash_dump.c58
-rw-r--r--arch/s390/kernel/dis.c245
-rw-r--r--arch/s390/kernel/early.c4
-rw-r--r--arch/s390/kernel/entry.h6
-rw-r--r--arch/s390/kernel/entry64.S17
-rw-r--r--arch/s390/kernel/ftrace.c139
-rw-r--r--arch/s390/kernel/head.S2
-rw-r--r--arch/s390/kernel/idle.c124
-rw-r--r--arch/s390/kernel/irq.c3
-rw-r--r--arch/s390/kernel/kprobes.c159
-rw-r--r--arch/s390/kernel/machine_kexec.c8
-rw-r--r--arch/s390/kernel/mcount.S86
-rw-r--r--arch/s390/kernel/mcount64.S62
-rw-r--r--arch/s390/kernel/nmi.c16
-rw-r--r--arch/s390/kernel/pgm_check.S2
-rw-r--r--arch/s390/kernel/process.c24
-rw-r--r--arch/s390/kernel/processor.c4
-rw-r--r--arch/s390/kernel/ptrace.c254
-rw-r--r--arch/s390/kernel/setup.c13
-rw-r--r--arch/s390/kernel/signal.c296
-rw-r--r--arch/s390/kernel/smp.c80
-rw-r--r--arch/s390/kernel/time.c13
-rw-r--r--arch/s390/kernel/topology.c18
-rw-r--r--arch/s390/kernel/traps.c115
-rw-r--r--arch/s390/kernel/uprobes.c332
-rw-r--r--arch/s390/kernel/vdso32/clock_getres.S11
-rw-r--r--arch/s390/kernel/vdso32/clock_gettime.S32
-rw-r--r--arch/s390/kernel/vdso32/gettimeofday.S4
-rw-r--r--arch/s390/kernel/vdso64/clock_getres.S8
-rw-r--r--arch/s390/kernel/vdso64/clock_gettime.S32
-rw-r--r--arch/s390/kernel/vdso64/gettimeofday.S4
-rw-r--r--arch/s390/kernel/vtime.c77
-rw-r--r--arch/s390/lib/Makefile2
-rw-r--r--arch/s390/lib/delay.c4
-rw-r--r--arch/s390/lib/probes.c159
-rw-r--r--arch/s390/lib/spinlock.c105
-rw-r--r--arch/s390/mm/dump_pagetables.c5
-rw-r--r--arch/s390/mm/hugetlbpage.c2
-rw-r--r--arch/s390/mm/pageattr.c38
-rw-r--r--arch/s390/mm/vmem.c8
73 files changed, 2399 insertions, 911 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 296391395b95..f2cf1f90295b 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -58,6 +58,9 @@ config NO_IOPORT_MAP
config PCI_QUIRKS
def_bool n
+config ARCH_SUPPORTS_UPROBES
+ def_bool 64BIT
+
config S390
def_bool y
select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
@@ -97,6 +100,7 @@ config S390
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_EXTABLE_SORT
select CLONE_BACKWARDS2
+ select DYNAMIC_FTRACE if FUNCTION_TRACER
select GENERIC_CLOCKEVENTS
select GENERIC_CPU_DEVICES if !SMP
select GENERIC_FIND_FIRST_BIT
@@ -113,10 +117,11 @@ config S390
select HAVE_CMPXCHG_LOCAL
select HAVE_C_RECORDMCOUNT
select HAVE_DEBUG_KMEMLEAK
- select HAVE_DYNAMIC_FTRACE
+ select HAVE_DYNAMIC_FTRACE if 64BIT
+ select HAVE_DYNAMIC_FTRACE_WITH_REGS if 64BIT
select HAVE_FTRACE_MCOUNT_RECORD
- select HAVE_FUNCTION_GRAPH_TRACER
- select HAVE_FUNCTION_TRACER
+ select HAVE_FUNCTION_GRAPH_TRACER if 64BIT
+ select HAVE_FUNCTION_TRACER if 64BIT
select HAVE_FUTEX_CMPXCHG if FUTEX
select HAVE_KERNEL_BZIP2
select HAVE_KERNEL_GZIP
diff --git a/arch/s390/Makefile b/arch/s390/Makefile
index 874e6d6e9c5f..878e67973151 100644
--- a/arch/s390/Makefile
+++ b/arch/s390/Makefile
@@ -35,13 +35,16 @@ endif
export LD_BFD
-cflags-$(CONFIG_MARCH_G5) += -march=g5
-cflags-$(CONFIG_MARCH_Z900) += -march=z900
-cflags-$(CONFIG_MARCH_Z990) += -march=z990
-cflags-$(CONFIG_MARCH_Z9_109) += -march=z9-109
-cflags-$(CONFIG_MARCH_Z10) += -march=z10
-cflags-$(CONFIG_MARCH_Z196) += -march=z196
-cflags-$(CONFIG_MARCH_ZEC12) += -march=zEC12
+mflags-$(CONFIG_MARCH_G5) := -march=g5
+mflags-$(CONFIG_MARCH_Z900) := -march=z900
+mflags-$(CONFIG_MARCH_Z990) := -march=z990
+mflags-$(CONFIG_MARCH_Z9_109) := -march=z9-109
+mflags-$(CONFIG_MARCH_Z10) := -march=z10
+mflags-$(CONFIG_MARCH_Z196) := -march=z196
+mflags-$(CONFIG_MARCH_ZEC12) := -march=zEC12
+
+aflags-y += $(mflags-y)
+cflags-y += $(mflags-y)
cflags-$(CONFIG_MARCH_G5_TUNE) += -mtune=g5
cflags-$(CONFIG_MARCH_Z900_TUNE) += -mtune=z900
diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h
index 19ff956b752b..b5dce6544d76 100644
--- a/arch/s390/include/asm/barrier.h
+++ b/arch/s390/include/asm/barrier.h
@@ -15,11 +15,13 @@
#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
/* Fast-BCR without checkpoint synchronization */
-#define mb() do { asm volatile("bcr 14,0" : : : "memory"); } while (0)
+#define __ASM_BARRIER "bcr 14,0\n"
#else
-#define mb() do { asm volatile("bcr 15,0" : : : "memory"); } while (0)
+#define __ASM_BARRIER "bcr 15,0\n"
#endif
+#define mb() do { asm volatile(__ASM_BARRIER : : : "memory"); } while (0)
+
#define rmb() mb()
#define wmb() mb()
#define read_barrier_depends() do { } while(0)
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 3001887f94b7..f8c196984853 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -8,8 +8,6 @@
#define _S390_CPUTIME_H
#include <linux/types.h>
-#include <linux/percpu.h>
-#include <linux/spinlock.h>
#include <asm/div64.h>
@@ -167,28 +165,8 @@ static inline clock_t cputime64_to_clock_t(cputime64_t cputime)
return clock;
}
-struct s390_idle_data {
- int nohz_delay;
- unsigned int sequence;
- unsigned long long idle_count;
- unsigned long long idle_time;
- unsigned long long clock_idle_enter;
- unsigned long long clock_idle_exit;
- unsigned long long timer_idle_enter;
- unsigned long long timer_idle_exit;
-};
+cputime64_t arch_cpu_idle_time(int cpu);
-DECLARE_PER_CPU(struct s390_idle_data, s390_idle);
-
-cputime64_t s390_get_idle_time(int cpu);
-
-#define arch_idle_time(cpu) s390_get_idle_time(cpu)
-
-static inline int s390_nohz_delay(int cpu)
-{
- return __get_cpu_var(s390_idle).nohz_delay != 0;
-}
-
-#define arch_needs_cpu(cpu) s390_nohz_delay(cpu)
+#define arch_idle_time(cpu) arch_cpu_idle_time(cpu)
#endif /* _S390_CPUTIME_H */
diff --git a/arch/s390/include/asm/dis.h b/arch/s390/include/asm/dis.h
index 04a83f5773cd..60323c21938b 100644
--- a/arch/s390/include/asm/dis.h
+++ b/arch/s390/include/asm/dis.h
@@ -13,12 +13,13 @@
#define OPERAND_FPR 0x2 /* Operand printed as %fx */
#define OPERAND_AR 0x4 /* Operand printed as %ax */
#define OPERAND_CR 0x8 /* Operand printed as %cx */
-#define OPERAND_DISP 0x10 /* Operand printed as displacement */
-#define OPERAND_BASE 0x20 /* Operand printed as base register */
-#define OPERAND_INDEX 0x40 /* Operand printed as index register */
-#define OPERAND_PCREL 0x80 /* Operand printed as pc-relative symbol */
-#define OPERAND_SIGNED 0x100 /* Operand printed as signed value */
-#define OPERAND_LENGTH 0x200 /* Operand printed as length (+1) */
+#define OPERAND_VR 0x10 /* Operand printed as %vx */
+#define OPERAND_DISP 0x20 /* Operand printed as displacement */
+#define OPERAND_BASE 0x40 /* Operand printed as base register */
+#define OPERAND_INDEX 0x80 /* Operand printed as index register */
+#define OPERAND_PCREL 0x100 /* Operand printed as pc-relative symbol */
+#define OPERAND_SIGNED 0x200 /* Operand printed as signed value */
+#define OPERAND_LENGTH 0x400 /* Operand printed as length (+1) */
struct s390_operand {
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 78f4f8711d58..f6e43d39e3d8 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -102,6 +102,7 @@
#define HWCAP_S390_ETF3EH 256
#define HWCAP_S390_HIGH_GPRS 512
#define HWCAP_S390_TE 1024
+#define HWCAP_S390_VXRS 2048
/*
* These are used to set parameters in the core dumps.
@@ -225,6 +226,6 @@ int arch_setup_additional_pages(struct linux_binprm *, int);
extern unsigned long arch_randomize_brk(struct mm_struct *mm);
#define arch_randomize_brk arch_randomize_brk
-void *fill_cpu_elf_notes(void *ptr, struct save_area *sa);
+void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vxrs);
#endif
diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h
index bf246dae1367..3aef8afec336 100644
--- a/arch/s390/include/asm/ftrace.h
+++ b/arch/s390/include/asm/ftrace.h
@@ -4,6 +4,7 @@
#ifndef __ASSEMBLY__
extern void _mcount(void);
+extern char ftrace_graph_caller_end;
struct dyn_arch_ftrace { };
@@ -17,10 +18,8 @@ static inline unsigned long ftrace_call_adjust(unsigned long addr)
#endif /* __ASSEMBLY__ */
-#ifdef CONFIG_64BIT
-#define MCOUNT_INSN_SIZE 12
-#else
-#define MCOUNT_INSN_SIZE 22
-#endif
+#define MCOUNT_INSN_SIZE 18
+
+#define ARCH_SUPPORTS_FTRACE_OPS 1
#endif /* _ASM_S390_FTRACE_H */
diff --git a/arch/s390/include/asm/idle.h b/arch/s390/include/asm/idle.h
new file mode 100644
index 000000000000..6af037f574b8
--- /dev/null
+++ b/arch/s390/include/asm/idle.h
@@ -0,0 +1,26 @@
+/*
+ * Copyright IBM Corp. 2014
+ *
+ * Author: Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#ifndef _S390_IDLE_H
+#define _S390_IDLE_H
+
+#include <linux/types.h>
+#include <linux/device.h>
+
+struct s390_idle_data {
+ unsigned int sequence;
+ unsigned long long idle_count;
+ unsigned long long idle_time;
+ unsigned long long clock_idle_enter;
+ unsigned long long clock_idle_exit;
+ unsigned long long timer_idle_enter;
+ unsigned long long timer_idle_exit;
+};
+
+extern struct device_attribute dev_attr_idle_count;
+extern struct device_attribute dev_attr_idle_time_us;
+
+#endif /* _S390_IDLE_H */
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index c81661e756a0..ece606c2ee86 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -89,12 +89,12 @@ extern u32 ipl_flags;
extern u32 dump_prefix_page;
struct dump_save_areas {
- struct save_area **areas;
+ struct save_area_ext **areas;
int count;
};
extern struct dump_save_areas dump_save_areas;
-struct save_area *dump_save_area_create(int cpu);
+struct save_area_ext *dump_save_area_create(int cpu);
extern void do_reipl(void);
extern void do_halt(void);
diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h
index c4dd400a2791..e787cc1bff8f 100644
--- a/arch/s390/include/asm/irq.h
+++ b/arch/s390/include/asm/irq.h
@@ -51,6 +51,7 @@ enum interruption_class {
IRQEXT_CMS,
IRQEXT_CMC,
IRQEXT_CMR,
+ IRQEXT_FTP,
IRQIO_CIO,
IRQIO_QAI,
IRQIO_DAS,
diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h
index 4176dfe0fba1..98629173ce3b 100644
--- a/arch/s390/include/asm/kprobes.h
+++ b/arch/s390/include/asm/kprobes.h
@@ -84,6 +84,10 @@ int kprobe_fault_handler(struct pt_regs *regs, int trapnr);
int kprobe_exceptions_notify(struct notifier_block *self,
unsigned long val, void *data);
+int probe_is_prohibited_opcode(u16 *insn);
+int probe_get_fixup_type(u16 *insn);
+int probe_is_insn_relative_long(u16 *insn);
+
#define flush_insn_slot(p) do { } while (0)
#endif /* _ASM_S390_KPROBES_H */
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 4349197ab9df..6cc51fe84410 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -11,6 +11,7 @@
#include <linux/types.h>
#include <asm/ptrace.h>
#include <asm/cpu.h>
+#include <asm/types.h>
#ifdef CONFIG_32BIT
@@ -31,6 +32,11 @@ struct save_area {
u32 ctrl_regs[16];
} __packed;
+struct save_area_ext {
+ struct save_area sa;
+ __vector128 vx_regs[32];
+};
+
struct _lowcore {
psw_t restart_psw; /* 0x0000 */
psw_t restart_old_psw; /* 0x0008 */
@@ -183,6 +189,11 @@ struct save_area {
u64 ctrl_regs[16];
} __packed;
+struct save_area_ext {
+ struct save_area sa;
+ __vector128 vx_regs[32];
+};
+
struct _lowcore {
__u8 pad_0x0000[0x0014-0x0000]; /* 0x0000 */
__u32 ipl_parmblock_ptr; /* 0x0014 */
@@ -310,7 +321,10 @@ struct _lowcore {
/* Extended facility list */
__u64 stfle_fac_list[32]; /* 0x0f00 */
- __u8 pad_0x1000[0x11b8-0x1000]; /* 0x1000 */
+ __u8 pad_0x1000[0x11b0-0x1000]; /* 0x1000 */
+
+ /* Pointer to vector register save area */
+ __u64 vector_save_area_addr; /* 0x11b0 */
/* 64 bit extparam used for pfault/diag 250: defined by architecture */
__u64 ext_params2; /* 0x11B8 */
@@ -334,9 +348,10 @@ struct _lowcore {
/* Transaction abort diagnostic block */
__u8 pgm_tdb[256]; /* 0x1800 */
+ __u8 pad_0x1900[0x1c00-0x1900]; /* 0x1900 */
- /* align to the top of the prefix area */
- __u8 pad_0x1900[0x2000-0x1900]; /* 0x1900 */
+ /* Software defined save area for vector registers */
+ __u8 vector_save_area[1024]; /* 0x1c00 */
} __packed;
#endif /* CONFIG_32BIT */
diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h
index 35f8ec185616..3027a5a72b74 100644
--- a/arch/s390/include/asm/nmi.h
+++ b/arch/s390/include/asm/nmi.h
@@ -38,7 +38,7 @@ struct mci {
__u32 pm : 1; /* 22 psw program mask and cc validity */
__u32 ia : 1; /* 23 psw instruction address validity */
__u32 fa : 1; /* 24 failing storage address validity */
- __u32 : 1; /* 25 */
+ __u32 vr : 1; /* 25 vector register validity */
__u32 ec : 1; /* 26 external damage code validity */
__u32 fp : 1; /* 27 floating point register validity */
__u32 gr : 1; /* 28 general register validity */
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index b7054356cc98..57c882761dea 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -217,7 +217,6 @@ extern unsigned long MODULES_END;
*/
/* Hardware bits in the page table entry */
-#define _PAGE_CO 0x100 /* HW Change-bit override */
#define _PAGE_PROTECT 0x200 /* HW read-only bit */
#define _PAGE_INVALID 0x400 /* HW invalid bit */
#define _PAGE_LARGE 0x800 /* Bit to mark a large pte */
@@ -234,8 +233,8 @@ extern unsigned long MODULES_END;
#define __HAVE_ARCH_PTE_SPECIAL
/* Set of bits not changed in pte_modify */
-#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_CO | \
- _PAGE_DIRTY | _PAGE_YOUNG)
+#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_DIRTY | \
+ _PAGE_YOUNG)
/*
* handle_pte_fault uses pte_present, pte_none and pte_file to find out the
@@ -354,7 +353,6 @@ extern unsigned long MODULES_END;
#define _REGION3_ENTRY_LARGE 0x400 /* RTTE-format control, large page */
#define _REGION3_ENTRY_RO 0x200 /* page protection bit */
-#define _REGION3_ENTRY_CO 0x100 /* change-recording override */
/* Bits in the segment table entry */
#define _SEGMENT_ENTRY_BITS 0xfffffffffffffe33UL
@@ -371,7 +369,6 @@ extern unsigned long MODULES_END;
#define _SEGMENT_ENTRY_YOUNG 0x1000 /* SW segment young bit */
#define _SEGMENT_ENTRY_SPLIT 0x0800 /* THP splitting bit */
#define _SEGMENT_ENTRY_LARGE 0x0400 /* STE-format control, large page */
-#define _SEGMENT_ENTRY_CO 0x0100 /* change-recording override */
#define _SEGMENT_ENTRY_READ 0x0002 /* SW segment read bit */
#define _SEGMENT_ENTRY_WRITE 0x0001 /* SW segment write bit */
@@ -873,8 +870,6 @@ static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
pgste = pgste_set_pte(ptep, pgste, entry);
pgste_set_unlock(ptep, pgste);
} else {
- if (!(pte_val(entry) & _PAGE_INVALID) && MACHINE_HAS_EDAT1)
- pte_val(entry) |= _PAGE_CO;
*ptep = entry;
}
}
@@ -1044,6 +1039,22 @@ static inline void __ptep_ipte_local(unsigned long address, pte_t *ptep)
: "=m" (*ptep) : "m" (*ptep), "a" (pto), "a" (address));
}
+static inline void __ptep_ipte_range(unsigned long address, int nr, pte_t *ptep)
+{
+ unsigned long pto = (unsigned long) ptep;
+
+#ifndef CONFIG_64BIT
+ /* pto in ESA mode must point to the start of the segment table */
+ pto &= 0x7ffffc00;
+#endif
+ /* Invalidate a range of ptes + global TLB flush of the ptes */
+ do {
+ asm volatile(
+ " .insn rrf,0xb2210000,%2,%0,%1,0"
+ : "+a" (address), "+a" (nr) : "a" (pto) : "memory");
+ } while (nr != 255);
+}
+
static inline void ptep_flush_direct(struct mm_struct *mm,
unsigned long address, pte_t *ptep)
{
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index e568fc8a7250..d559bdb03d18 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -13,9 +13,11 @@
#define CIF_MCCK_PENDING 0 /* machine check handling is pending */
#define CIF_ASCE 1 /* user asce needs fixup / uaccess */
+#define CIF_NOHZ_DELAY 2 /* delay HZ disable for a tick */
#define _CIF_MCCK_PENDING (1<<CIF_MCCK_PENDING)
#define _CIF_ASCE (1<<CIF_ASCE)
+#define _CIF_NOHZ_DELAY (1<<CIF_NOHZ_DELAY)
#ifndef __ASSEMBLY__
@@ -43,6 +45,8 @@ static inline int test_cpu_flag(int flag)
return !!(S390_lowcore.cpu_flags & (1U << flag));
}
+#define arch_needs_cpu() test_cpu_flag(CIF_NOHZ_DELAY)
+
/*
* Default implementation of macro that returns current
* instruction pointer ("program counter").
@@ -113,6 +117,7 @@ struct thread_struct {
int ri_signum;
#ifdef CONFIG_64BIT
unsigned char trap_tdb[256]; /* Transaction abort diagnose block */
+ __vector128 *vxrs; /* Vector register save area */
#endif
};
@@ -285,7 +290,12 @@ static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc)
return (psw.addr - ilc) & mask;
#endif
}
-
+
+/*
+ * Function to stop a processor until the next interrupt occurs
+ */
+void enabled_wait(void);
+
/*
* Function to drop a processor into disabled wait state
*/
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index 55d69dd7473c..be317feff7ac 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -161,6 +161,12 @@ static inline long regs_return_value(struct pt_regs *regs)
return regs->gprs[2];
}
+static inline void instruction_pointer_set(struct pt_regs *regs,
+ unsigned long val)
+{
+ regs->psw.addr = val | PSW_ADDR_AMODE;
+}
+
int regs_query_register_offset(const char *name);
const char *regs_query_register_name(unsigned int offset);
unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset);
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 089a49814c50..7736fdd72595 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -55,8 +55,8 @@ extern void detect_memory_memblock(void);
#define MACHINE_FLAG_LPP (1UL << 13)
#define MACHINE_FLAG_TOPOLOGY (1UL << 14)
#define MACHINE_FLAG_TE (1UL << 15)
-#define MACHINE_FLAG_RRBM (1UL << 16)
#define MACHINE_FLAG_TLB_LC (1UL << 17)
+#define MACHINE_FLAG_VX (1UL << 18)
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
@@ -78,8 +78,8 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_LPP (0)
#define MACHINE_HAS_TOPOLOGY (0)
#define MACHINE_HAS_TE (0)
-#define MACHINE_HAS_RRBM (0)
#define MACHINE_HAS_TLB_LC (0)
+#define MACHINE_HAS_VX (0)
#else /* CONFIG_64BIT */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
@@ -91,8 +91,8 @@ extern void detect_memory_memblock(void);
#define MACHINE_HAS_LPP (S390_lowcore.machine_flags & MACHINE_FLAG_LPP)
#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY)
#define MACHINE_HAS_TE (S390_lowcore.machine_flags & MACHINE_FLAG_TE)
-#define MACHINE_HAS_RRBM (S390_lowcore.machine_flags & MACHINE_FLAG_RRBM)
#define MACHINE_HAS_TLB_LC (S390_lowcore.machine_flags & MACHINE_FLAG_TLB_LC)
+#define MACHINE_HAS_VX (S390_lowcore.machine_flags & MACHINE_FLAG_VX)
#endif /* CONFIG_64BIT */
/*
diff --git a/arch/s390/include/asm/sigp.h b/arch/s390/include/asm/sigp.h
index bf9c823d4020..49576115dbb7 100644
--- a/arch/s390/include/asm/sigp.h
+++ b/arch/s390/include/asm/sigp.h
@@ -15,6 +15,7 @@
#define SIGP_SET_ARCHITECTURE 18
#define SIGP_COND_EMERGENCY_SIGNAL 19
#define SIGP_SENSE_RUNNING 21
+#define SIGP_STORE_ADDITIONAL_STATUS 23
/* SIGP condition codes */
#define SIGP_CC_ORDER_CODE_ACCEPTED 0
@@ -33,9 +34,10 @@
#ifndef __ASSEMBLY__
-static inline int __pcpu_sigp(u16 addr, u8 order, u32 parm, u32 *status)
+static inline int __pcpu_sigp(u16 addr, u8 order, unsigned long parm,
+ u32 *status)
{
- register unsigned int reg1 asm ("1") = parm;
+ register unsigned long reg1 asm ("1") = parm;
int cc;
asm volatile(
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index 4f1307962a95..762d4f88af5a 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -29,7 +29,6 @@ extern int smp_find_processor_id(u16 address);
extern int smp_store_status(int cpu);
extern int smp_vcpu_scheduled(int cpu);
extern void smp_yield_cpu(int cpu);
-extern void smp_yield(void);
extern void smp_cpu_set_polarization(int cpu, int val);
extern int smp_cpu_get_polarization(int cpu);
extern void smp_fill_possible_mask(void);
@@ -50,7 +49,6 @@ static inline int smp_find_processor_id(u16 address) { return 0; }
static inline int smp_store_status(int cpu) { return 0; }
static inline int smp_vcpu_scheduled(int cpu) { return 1; }
static inline void smp_yield_cpu(int cpu) { }
-static inline void smp_yield(void) { }
static inline void smp_fill_possible_mask(void) { }
#endif /* CONFIG_SMP */
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h
index 96879f7ad6da..d6bdf906caa5 100644
--- a/arch/s390/include/asm/spinlock.h
+++ b/arch/s390/include/asm/spinlock.h
@@ -37,11 +37,17 @@ _raw_compare_and_swap(unsigned int *lock, unsigned int old, unsigned int new)
* (the type definitions are in asm/spinlock_types.h)
*/
+void arch_lock_relax(unsigned int cpu);
+
void arch_spin_lock_wait(arch_spinlock_t *);
int arch_spin_trylock_retry(arch_spinlock_t *);
-void arch_spin_relax(arch_spinlock_t *);
void arch_spin_lock_wait_flags(arch_spinlock_t *, unsigned long flags);
+static inline void arch_spin_relax(arch_spinlock_t *lock)
+{
+ arch_lock_relax(lock->lock);
+}
+
static inline u32 arch_spin_lockval(int cpu)
{
return ~cpu;
@@ -64,11 +70,6 @@ static inline int arch_spin_trylock_once(arch_spinlock_t *lp)
_raw_compare_and_swap(&lp->lock, 0, SPINLOCK_LOCKVAL));
}
-static inline int arch_spin_tryrelease_once(arch_spinlock_t *lp)
-{
- return _raw_compare_and_swap(&lp->lock, SPINLOCK_LOCKVAL, 0);
-}
-
static inline void arch_spin_lock(arch_spinlock_t *lp)
{
if (!arch_spin_trylock_once(lp))
@@ -91,7 +92,13 @@ static inline int arch_spin_trylock(arch_spinlock_t *lp)
static inline void arch_spin_unlock(arch_spinlock_t *lp)
{
- arch_spin_tryrelease_once(lp);
+ typecheck(unsigned int, lp->lock);
+ asm volatile(
+ __ASM_BARRIER
+ "st %1,%0\n"
+ : "+Q" (lp->lock)
+ : "d" (0)
+ : "cc", "memory");
}
static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
@@ -123,13 +130,12 @@ static inline void arch_spin_unlock_wait(arch_spinlock_t *lock)
*/
#define arch_write_can_lock(x) ((x)->lock == 0)
-extern void _raw_read_lock_wait(arch_rwlock_t *lp);
-extern void _raw_read_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags);
extern int _raw_read_trylock_retry(arch_rwlock_t *lp);
-extern void _raw_write_lock_wait(arch_rwlock_t *lp);
-extern void _raw_write_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags);
extern int _raw_write_trylock_retry(arch_rwlock_t *lp);
+#define arch_read_lock_flags(lock, flags) arch_read_lock(lock)
+#define arch_write_lock_flags(lock, flags) arch_write_lock(lock)
+
static inline int arch_read_trylock_once(arch_rwlock_t *rw)
{
unsigned int old = ACCESS_ONCE(rw->lock);
@@ -144,16 +150,82 @@ static inline int arch_write_trylock_once(arch_rwlock_t *rw)
_raw_compare_and_swap(&rw->lock, 0, 0x80000000));
}
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+
+#define __RAW_OP_OR "lao"
+#define __RAW_OP_AND "lan"
+#define __RAW_OP_ADD "laa"
+
+#define __RAW_LOCK(ptr, op_val, op_string) \
+({ \
+ unsigned int old_val; \
+ \
+ typecheck(unsigned int *, ptr); \
+ asm volatile( \
+ op_string " %0,%2,%1\n" \
+ "bcr 14,0\n" \
+ : "=d" (old_val), "+Q" (*ptr) \
+ : "d" (op_val) \
+ : "cc", "memory"); \
+ old_val; \
+})
+
+#define __RAW_UNLOCK(ptr, op_val, op_string) \
+({ \
+ unsigned int old_val; \
+ \
+ typecheck(unsigned int *, ptr); \
+ asm volatile( \
+ "bcr 14,0\n" \
+ op_string " %0,%2,%1\n" \
+ : "=d" (old_val), "+Q" (*ptr) \
+ : "d" (op_val) \
+ : "cc", "memory"); \
+ old_val; \
+})
+
+extern void _raw_read_lock_wait(arch_rwlock_t *lp);
+extern void _raw_write_lock_wait(arch_rwlock_t *lp, unsigned int prev);
+
static inline void arch_read_lock(arch_rwlock_t *rw)
{
- if (!arch_read_trylock_once(rw))
+ unsigned int old;
+
+ old = __RAW_LOCK(&rw->lock, 1, __RAW_OP_ADD);
+ if ((int) old < 0)
_raw_read_lock_wait(rw);
}
-static inline void arch_read_lock_flags(arch_rwlock_t *rw, unsigned long flags)
+static inline void arch_read_unlock(arch_rwlock_t *rw)
+{
+ __RAW_UNLOCK(&rw->lock, -1, __RAW_OP_ADD);
+}
+
+static inline void arch_write_lock(arch_rwlock_t *rw)
+{
+ unsigned int old;
+
+ old = __RAW_LOCK(&rw->lock, 0x80000000, __RAW_OP_OR);
+ if (old != 0)
+ _raw_write_lock_wait(rw, old);
+ rw->owner = SPINLOCK_LOCKVAL;
+}
+
+static inline void arch_write_unlock(arch_rwlock_t *rw)
+{
+ rw->owner = 0;
+ __RAW_UNLOCK(&rw->lock, 0x7fffffff, __RAW_OP_AND);
+}
+
+#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+extern void _raw_read_lock_wait(arch_rwlock_t *lp);
+extern void _raw_write_lock_wait(arch_rwlock_t *lp);
+
+static inline void arch_read_lock(arch_rwlock_t *rw)
{
if (!arch_read_trylock_once(rw))
- _raw_read_lock_wait_flags(rw, flags);
+ _raw_read_lock_wait(rw);
}
static inline void arch_read_unlock(arch_rwlock_t *rw)
@@ -169,19 +241,24 @@ static inline void arch_write_lock(arch_rwlock_t *rw)
{
if (!arch_write_trylock_once(rw))
_raw_write_lock_wait(rw);
-}
-
-static inline void arch_write_lock_flags(arch_rwlock_t *rw, unsigned long flags)
-{
- if (!arch_write_trylock_once(rw))
- _raw_write_lock_wait_flags(rw, flags);
+ rw->owner = SPINLOCK_LOCKVAL;
}
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
- _raw_compare_and_swap(&rw->lock, 0x80000000, 0);
+ typecheck(unsigned int, rw->lock);
+
+ rw->owner = 0;
+ asm volatile(
+ __ASM_BARRIER
+ "st %1,%0\n"
+ : "+Q" (rw->lock)
+ : "d" (0)
+ : "cc", "memory");
}
+#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
static inline int arch_read_trylock(arch_rwlock_t *rw)
{
if (!arch_read_trylock_once(rw))
@@ -191,12 +268,20 @@ static inline int arch_read_trylock(arch_rwlock_t *rw)
static inline int arch_write_trylock(arch_rwlock_t *rw)
{
- if (!arch_write_trylock_once(rw))
- return _raw_write_trylock_retry(rw);
+ if (!arch_write_trylock_once(rw) && !_raw_write_trylock_retry(rw))
+ return 0;
+ rw->owner = SPINLOCK_LOCKVAL;
return 1;
}
-#define arch_read_relax(lock) cpu_relax()
-#define arch_write_relax(lock) cpu_relax()
+static inline void arch_read_relax(arch_rwlock_t *rw)
+{
+ arch_lock_relax(rw->owner);
+}
+
+static inline void arch_write_relax(arch_rwlock_t *rw)
+{
+ arch_lock_relax(rw->owner);
+}
#endif /* __ASM_SPINLOCK_H */
diff --git a/arch/s390/include/asm/spinlock_types.h b/arch/s390/include/asm/spinlock_types.h
index b2cd6ff7c2c5..d84b6939237c 100644
--- a/arch/s390/include/asm/spinlock_types.h
+++ b/arch/s390/include/asm/spinlock_types.h
@@ -13,6 +13,7 @@ typedef struct {
typedef struct {
unsigned int lock;
+ unsigned int owner;
} arch_rwlock_t;
#define __ARCH_RW_LOCK_UNLOCKED { 0 }
diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index 18ea9e3f8142..2542a7e4c8b4 100644
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -103,6 +103,61 @@ static inline void restore_fp_regs(freg_t *fprs)
asm volatile("ld 15,%0" : : "Q" (fprs[15]));
}
+static inline void save_vx_regs(__vector128 *vxrs)
+{
+ typedef struct { __vector128 _[__NUM_VXRS]; } addrtype;
+
+ asm volatile(
+ " la 1,%0\n"
+ " .word 0xe70f,0x1000,0x003e\n" /* vstm 0,15,0(1) */
+ " .word 0xe70f,0x1100,0x0c3e\n" /* vstm 16,31,256(1) */
+ : "=Q" (*(addrtype *) vxrs) : : "1");
+}
+
+static inline void save_vx_regs_safe(__vector128 *vxrs)
+{
+ unsigned long cr0, flags;
+
+ flags = arch_local_irq_save();
+ __ctl_store(cr0, 0, 0);
+ __ctl_set_bit(0, 17);
+ __ctl_set_bit(0, 18);
+ save_vx_regs(vxrs);
+ __ctl_load(cr0, 0, 0);
+ arch_local_irq_restore(flags);
+}
+
+static inline void restore_vx_regs(__vector128 *vxrs)
+{
+ typedef struct { __vector128 _[__NUM_VXRS]; } addrtype;
+
+ asm volatile(
+ " la 1,%0\n"
+ " .word 0xe70f,0x1000,0x0036\n" /* vlm 0,15,0(1) */
+ " .word 0xe70f,0x1100,0x0c36\n" /* vlm 16,31,256(1) */
+ : : "Q" (*(addrtype *) vxrs) : "1");
+}
+
+static inline void save_fp_vx_regs(struct task_struct *task)
+{
+#ifdef CONFIG_64BIT
+ if (task->thread.vxrs)
+ save_vx_regs(task->thread.vxrs);
+ else
+#endif
+ save_fp_regs(task->thread.fp_regs.fprs);
+}
+
+static inline void restore_fp_vx_regs(struct task_struct *task)
+{
+#ifdef CONFIG_64BIT
+ if (task->thread.vxrs)
+ restore_vx_regs(task->thread.vxrs);
+ else
+#endif
+ restore_fp_regs(task->thread.fp_regs.fprs);
+}
+
static inline void save_access_regs(unsigned int *acrs)
{
typedef struct { int _[NUM_ACRS]; } acrstype;
@@ -120,16 +175,16 @@ static inline void restore_access_regs(unsigned int *acrs)
#define switch_to(prev,next,last) do { \
if (prev->mm) { \
save_fp_ctl(&prev->thread.fp_regs.fpc); \
- save_fp_regs(prev->thread.fp_regs.fprs); \
+ save_fp_vx_regs(prev); \
save_access_regs(&prev->thread.acrs[0]); \
save_ri_cb(prev->thread.ri_cb); \
} \
if (next->mm) { \
+ update_cr_regs(next); \
restore_fp_ctl(&next->thread.fp_regs.fpc); \
- restore_fp_regs(next->thread.fp_regs.fprs); \
+ restore_fp_vx_regs(next); \
restore_access_regs(&next->thread.acrs[0]); \
restore_ri_cb(next->thread.ri_cb, prev->thread.ri_cb); \
- update_cr_regs(next); \
} \
prev = __switch_to(prev,next); \
} while (0)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index b833e9c0bfbf..4d62fd5b56e5 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -84,11 +84,13 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */
#define TIF_SECCOMP 5 /* secure computing */
#define TIF_SYSCALL_TRACEPOINT 6 /* syscall tracepoint instrumentation */
+#define TIF_UPROBE 7 /* breakpointed or single-stepping */
#define TIF_31BIT 16 /* 32bit process */
#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
#define TIF_RESTORE_SIGMASK 18 /* restore signal mask in do_signal() */
#define TIF_SINGLE_STEP 19 /* This task is single stepped */
#define TIF_BLOCK_STEP 20 /* This task is block stepped */
+#define TIF_UPROBE_SINGLESTEP 21 /* This task is uprobe single stepped */
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
@@ -97,6 +99,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
+#define _TIF_UPROBE (1<<TIF_UPROBE)
#define _TIF_31BIT (1<<TIF_31BIT)
#define _TIF_SINGLE_STEP (1<<TIF_SINGLE_STEP)
diff --git a/arch/s390/include/asm/uprobes.h b/arch/s390/include/asm/uprobes.h
new file mode 100644
index 000000000000..1411dff7fea7
--- /dev/null
+++ b/arch/s390/include/asm/uprobes.h
@@ -0,0 +1,42 @@
+/*
+ * User-space Probes (UProbes) for s390
+ *
+ * Copyright IBM Corp. 2014
+ * Author(s): Jan Willeke,
+ */
+
+#ifndef _ASM_UPROBES_H
+#define _ASM_UPROBES_H
+
+#include <linux/notifier.h>
+
+typedef u16 uprobe_opcode_t;
+
+#define UPROBE_XOL_SLOT_BYTES 256 /* cache aligned */
+
+#define UPROBE_SWBP_INSN 0x0002
+#define UPROBE_SWBP_INSN_SIZE 2
+
+struct arch_uprobe {
+ union{
+ uprobe_opcode_t insn[3];
+ uprobe_opcode_t ixol[3];
+ };
+ unsigned int saved_per : 1;
+ unsigned int saved_int_code;
+};
+
+struct arch_uprobe_task {
+};
+
+int arch_uprobe_analyze_insn(struct arch_uprobe *aup, struct mm_struct *mm,
+ unsigned long addr);
+int arch_uprobe_pre_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+int arch_uprobe_post_xol(struct arch_uprobe *aup, struct pt_regs *regs);
+bool arch_uprobe_xol_was_trapped(struct task_struct *tsk);
+int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
+ void *data);
+void arch_uprobe_abort_xol(struct arch_uprobe *ap, struct pt_regs *regs);
+unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
+ struct pt_regs *regs);
+#endif /* _ASM_UPROBES_H */
diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h
index bc9746a7d47c..a62526d09201 100644
--- a/arch/s390/include/asm/vdso.h
+++ b/arch/s390/include/asm/vdso.h
@@ -22,13 +22,17 @@ struct vdso_data {
__u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */
__u64 xtime_clock_sec; /* Kernel time 0x10 */
__u64 xtime_clock_nsec; /* 0x18 */
- __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */
- __u64 wtom_clock_nsec; /* 0x28 */
- __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */
- __u32 tz_dsttime; /* Type of dst correction 0x34 */
- __u32 ectg_available; /* ECTG instruction present 0x38 */
- __u32 tk_mult; /* Mult. used for xtime_nsec 0x3c */
- __u32 tk_shift; /* Shift used for xtime_nsec 0x40 */
+ __u64 xtime_coarse_sec; /* Coarse kernel time 0x20 */
+ __u64 xtime_coarse_nsec; /* 0x28 */
+ __u64 wtom_clock_sec; /* Wall to monotonic clock 0x30 */
+ __u64 wtom_clock_nsec; /* 0x38 */
+ __u64 wtom_coarse_sec; /* Coarse wall to monotonic 0x40 */
+ __u64 wtom_coarse_nsec; /* 0x48 */
+ __u32 tz_minuteswest; /* Minutes west of Greenwich 0x50 */
+ __u32 tz_dsttime; /* Type of dst correction 0x54 */
+ __u32 ectg_available; /* ECTG instruction present 0x58 */
+ __u32 tk_mult; /* Mult. used for xtime_nsec 0x5c */
+ __u32 tk_shift; /* Shift used for xtime_nsec 0x60 */
};
struct vdso_per_cpu_data {
diff --git a/arch/s390/include/asm/vtimer.h b/arch/s390/include/asm/vtimer.h
index bfe25d513ad2..10a179af62d8 100644
--- a/arch/s390/include/asm/vtimer.h
+++ b/arch/s390/include/asm/vtimer.h
@@ -28,6 +28,4 @@ extern int del_virt_timer(struct vtimer_list *timer);
extern void init_cpu_vtimer(void);
extern void vtime_init(void);
-extern void vtime_stop_cpu(void);
-
#endif /* _ASM_S390_TIMER_H */
diff --git a/arch/s390/include/uapi/asm/sigcontext.h b/arch/s390/include/uapi/asm/sigcontext.h
index b30de9c01bbe..5f0b8d7ddb0b 100644
--- a/arch/s390/include/uapi/asm/sigcontext.h
+++ b/arch/s390/include/uapi/asm/sigcontext.h
@@ -7,10 +7,14 @@
#define _ASM_S390_SIGCONTEXT_H
#include <linux/compiler.h>
+#include <linux/types.h>
-#define __NUM_GPRS 16
-#define __NUM_FPRS 16
-#define __NUM_ACRS 16
+#define __NUM_GPRS 16
+#define __NUM_FPRS 16
+#define __NUM_ACRS 16
+#define __NUM_VXRS 32
+#define __NUM_VXRS_LOW 16
+#define __NUM_VXRS_HIGH 16
#ifndef __s390x__
@@ -59,6 +63,16 @@ typedef struct
_s390_fp_regs fpregs;
} _sigregs;
+typedef struct
+{
+#ifndef __s390x__
+ unsigned long gprs_high[__NUM_GPRS];
+#endif
+ unsigned long long vxrs_low[__NUM_VXRS_LOW];
+ __vector128 vxrs_high[__NUM_VXRS_HIGH];
+ unsigned char __reserved[128];
+} _sigregs_ext;
+
struct sigcontext
{
unsigned long oldmask[_SIGCONTEXT_NSIG_WORDS];
diff --git a/arch/s390/include/uapi/asm/types.h b/arch/s390/include/uapi/asm/types.h
index 038f2b9178a4..3c3951e3415b 100644
--- a/arch/s390/include/uapi/asm/types.h
+++ b/arch/s390/include/uapi/asm/types.h
@@ -17,6 +17,10 @@
typedef unsigned long addr_t;
typedef __signed__ long saddr_t;
+typedef struct {
+ __u32 u[4];
+} __vector128;
+
#endif /* __ASSEMBLY__ */
#endif /* _UAPI_S390_TYPES_H */
diff --git a/arch/s390/include/uapi/asm/ucontext.h b/arch/s390/include/uapi/asm/ucontext.h
index 3e077b2a4705..64a69aa5dde0 100644
--- a/arch/s390/include/uapi/asm/ucontext.h
+++ b/arch/s390/include/uapi/asm/ucontext.h
@@ -7,10 +7,15 @@
#ifndef _ASM_S390_UCONTEXT_H
#define _ASM_S390_UCONTEXT_H
-#define UC_EXTENDED 0x00000001
-
-#ifndef __s390x__
+#define UC_GPRS_HIGH 1 /* uc_mcontext_ext has valid high gprs */
+#define UC_VXRS 2 /* uc_mcontext_ext has valid vector regs */
+/*
+ * The struct ucontext_extended describes how the registers are stored
+ * on a rt signal frame. Please note that the structure is not fixed,
+ * if new CPU registers are added to the user state the size of the
+ * struct ucontext_extended will increase.
+ */
struct ucontext_extended {
unsigned long uc_flags;
struct ucontext *uc_link;
@@ -19,11 +24,9 @@ struct ucontext_extended {
sigset_t uc_sigmask;
/* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
unsigned char __unused[128 - sizeof(sigset_t)];
- unsigned long uc_gprs_high[16];
+ _sigregs_ext uc_mcontext_ext;
};
-#endif
-
struct ucontext {
unsigned long uc_flags;
struct ucontext *uc_link;
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index a95c4ca99617..204c43a4c245 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -28,7 +28,7 @@ CFLAGS_ptrace.o += -DUTS_MACHINE='"$(UTS_MACHINE)"'
CFLAGS_sysinfo.o += -Iinclude/math-emu -Iarch/s390/math-emu -w
-obj-y := traps.o time.o process.o base.o early.o setup.o vtime.o
+obj-y := traps.o time.o process.o base.o early.o setup.o idle.o vtime.o
obj-y += processor.o sys_s390.o ptrace.o signal.o cpcmd.o ebcdic.o nmi.o
obj-y += debug.o irq.o ipl.o dis.o diag.o sclp.o vdso.o
obj-y += sysinfo.o jump_label.o lgr.o os_info.o machine_kexec.o pgm_check.o
@@ -52,11 +52,9 @@ obj-$(CONFIG_COMPAT) += compat_wrapper.o $(compat-obj-y)
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-$(CONFIG_KPROBES) += kprobes.o
-obj-$(CONFIG_FUNCTION_TRACER) += $(if $(CONFIG_64BIT),mcount64.o,mcount.o)
-obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
-obj-$(CONFIG_FUNCTION_GRAPH_TRACER) += ftrace.o
-obj-$(CONFIG_FTRACE_SYSCALLS) += ftrace.o
+obj-$(CONFIG_FUNCTION_TRACER) += mcount.o ftrace.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump.o
+obj-$(CONFIG_UPROBES) += uprobes.o
ifdef CONFIG_64BIT
obj-$(CONFIG_PERF_EVENTS) += perf_event.o perf_cpum_cf.o perf_cpum_sf.o \
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index afe1715a4eb7..ef279a136801 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -9,7 +9,7 @@
#include <linux/kbuild.h>
#include <linux/kvm_host.h>
#include <linux/sched.h>
-#include <asm/cputime.h>
+#include <asm/idle.h>
#include <asm/vdso.h>
#include <asm/pgtable.h>
@@ -62,8 +62,12 @@ int main(void)
DEFINE(__VDSO_XTIME_STAMP, offsetof(struct vdso_data, xtime_tod_stamp));
DEFINE(__VDSO_XTIME_SEC, offsetof(struct vdso_data, xtime_clock_sec));
DEFINE(__VDSO_XTIME_NSEC, offsetof(struct vdso_data, xtime_clock_nsec));
+ DEFINE(__VDSO_XTIME_CRS_SEC, offsetof(struct vdso_data, xtime_coarse_sec));
+ DEFINE(__VDSO_XTIME_CRS_NSEC, offsetof(struct vdso_data, xtime_coarse_nsec));
DEFINE(__VDSO_WTOM_SEC, offsetof(struct vdso_data, wtom_clock_sec));
DEFINE(__VDSO_WTOM_NSEC, offsetof(struct vdso_data, wtom_clock_nsec));
+ DEFINE(__VDSO_WTOM_CRS_SEC, offsetof(struct vdso_data, wtom_coarse_sec));
+ DEFINE(__VDSO_WTOM_CRS_NSEC, offsetof(struct vdso_data, wtom_coarse_nsec));
DEFINE(__VDSO_TIMEZONE, offsetof(struct vdso_data, tz_minuteswest));
DEFINE(__VDSO_ECTG_OK, offsetof(struct vdso_data, ectg_available));
DEFINE(__VDSO_TK_MULT, offsetof(struct vdso_data, tk_mult));
@@ -73,8 +77,11 @@ int main(void)
/* constants used by the vdso */
DEFINE(__CLOCK_REALTIME, CLOCK_REALTIME);
DEFINE(__CLOCK_MONOTONIC, CLOCK_MONOTONIC);
+ DEFINE(__CLOCK_REALTIME_COARSE, CLOCK_REALTIME_COARSE);
+ DEFINE(__CLOCK_MONOTONIC_COARSE, CLOCK_MONOTONIC_COARSE);
DEFINE(__CLOCK_THREAD_CPUTIME_ID, CLOCK_THREAD_CPUTIME_ID);
DEFINE(__CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC);
+ DEFINE(__CLOCK_COARSE_RES, LOW_RES_NSEC);
BLANK();
/* idle data offsets */
DEFINE(__CLOCK_IDLE_ENTER, offsetof(struct s390_idle_data, clock_idle_enter));
diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h
index 70d4b7c4beaa..a0a886c04977 100644
--- a/arch/s390/kernel/compat_linux.h
+++ b/arch/s390/kernel/compat_linux.h
@@ -50,6 +50,14 @@ typedef struct
_s390_fp_regs32 fpregs;
} _sigregs32;
+typedef struct
+{
+ __u32 gprs_high[__NUM_GPRS];
+ __u64 vxrs_low[__NUM_VXRS_LOW];
+ __vector128 vxrs_high[__NUM_VXRS_HIGH];
+ __u8 __reserved[128];
+} _sigregs_ext32;
+
#define _SIGCONTEXT_NSIG32 64
#define _SIGCONTEXT_NSIG_BPW32 32
#define __SIGNAL_FRAMESIZE32 96
@@ -72,6 +80,7 @@ struct ucontext32 {
compat_sigset_t uc_sigmask;
/* Allow for uc_sigmask growth. Glibc uses a 1024-bit sigset_t. */
unsigned char __unused[128 - sizeof(compat_sigset_t)];
+ _sigregs_ext32 uc_mcontext_ext;
};
struct stat64_emu31;
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 598b0b42668b..009f5eb11125 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -36,17 +36,16 @@ typedef struct
struct sigcontext32 sc;
_sigregs32 sregs;
int signo;
- __u32 gprs_high[NUM_GPRS];
- __u8 retcode[S390_SYSCALL_SIZE];
+ _sigregs_ext32 sregs_ext;
+ __u16 svc_insn; /* Offset of svc_insn is NOT fixed! */
} sigframe32;
typedef struct
{
__u8 callee_used_stack[__SIGNAL_FRAMESIZE32];
- __u8 retcode[S390_SYSCALL_SIZE];
+ __u16 svc_insn;
compat_siginfo_t info;
struct ucontext32 uc;
- __u32 gprs_high[NUM_GPRS];
} rt_sigframe32;
int copy_siginfo_to_user32(compat_siginfo_t __user *to, const siginfo_t *from)
@@ -151,6 +150,38 @@ int copy_siginfo_from_user32(siginfo_t *to, compat_siginfo_t __user *from)
return err ? -EFAULT : 0;
}
+/* Store registers needed to create the signal frame */
+static void store_sigregs(void)
+{
+ int i;
+
+ save_access_regs(current->thread.acrs);
+ save_fp_ctl(&current->thread.fp_regs.fpc);
+ if (current->thread.vxrs) {
+ save_vx_regs(current->thread.vxrs);
+ for (i = 0; i < __NUM_FPRS; i++)
+ current->thread.fp_regs.fprs[i] =
+ *(freg_t *)(current->thread.vxrs + i);
+ } else
+ save_fp_regs(current->thread.fp_regs.fprs);
+}
+
+/* Load registers after signal return */
+static void load_sigregs(void)
+{
+ int i;
+
+ restore_access_regs(current->thread.acrs);
+ /* restore_fp_ctl is done in restore_sigregs */
+ if (current->thread.vxrs) {
+ for (i = 0; i < __NUM_FPRS; i++)
+ *(freg_t *)(current->thread.vxrs + i) =
+ current->thread.fp_regs.fprs[i];
+ restore_vx_regs(current->thread.vxrs);
+ } else
+ restore_fp_regs(current->thread.fp_regs.fprs);
+}
+
static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
{
_sigregs32 user_sregs;
@@ -163,11 +194,8 @@ static int save_sigregs32(struct pt_regs *regs, _sigregs32 __user *sregs)
(__u32)(regs->psw.mask & PSW_MASK_BA);
for (i = 0; i < NUM_GPRS; i++)
user_sregs.regs.gprs[i] = (__u32) regs->gprs[i];
- save_access_regs(current->thread.acrs);
memcpy(&user_sregs.regs.acrs, current->thread.acrs,
sizeof(user_sregs.regs.acrs));
- save_fp_ctl(&current->thread.fp_regs.fpc);
- save_fp_regs(current->thread.fp_regs.fprs);
memcpy(&user_sregs.fpregs, &current->thread.fp_regs,
sizeof(user_sregs.fpregs));
if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs32)))
@@ -207,37 +235,67 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs)
regs->gprs[i] = (__u64) user_sregs.regs.gprs[i];
memcpy(&current->thread.acrs, &user_sregs.regs.acrs,
sizeof(current->thread.acrs));
- restore_access_regs(current->thread.acrs);
memcpy(&current->thread.fp_regs, &user_sregs.fpregs,
sizeof(current->thread.fp_regs));
- restore_fp_regs(current->thread.fp_regs.fprs);
clear_pt_regs_flag(regs, PIF_SYSCALL); /* No longer in a system call */
return 0;
}
-static int save_sigregs_gprs_high(struct pt_regs *regs, __u32 __user *uregs)
+static int save_sigregs_ext32(struct pt_regs *regs,
+ _sigregs_ext32 __user *sregs_ext)
{
__u32 gprs_high[NUM_GPRS];
+ __u64 vxrs[__NUM_VXRS_LOW];
int i;
+ /* Save high gprs to signal stack */
for (i = 0; i < NUM_GPRS; i++)
gprs_high[i] = regs->gprs[i] >> 32;
- if (__copy_to_user(uregs, &gprs_high, sizeof(gprs_high)))
+ if (__copy_to_user(&sregs_ext->gprs_high, &gprs_high,
+ sizeof(sregs_ext->gprs_high)))
return -EFAULT;
+
+ /* Save vector registers to signal stack */
+ if (current->thread.vxrs) {
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ vxrs[i] = *((__u64 *)(current->thread.vxrs + i) + 1);
+ if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
+ sizeof(sregs_ext->vxrs_low)) ||
+ __copy_to_user(&sregs_ext->vxrs_high,
+ current->thread.vxrs + __NUM_VXRS_LOW,
+ sizeof(sregs_ext->vxrs_high)))
+ return -EFAULT;
+ }
return 0;
}
-static int restore_sigregs_gprs_high(struct pt_regs *regs, __u32 __user *uregs)
+static int restore_sigregs_ext32(struct pt_regs *regs,
+ _sigregs_ext32 __user *sregs_ext)
{
__u32 gprs_high[NUM_GPRS];
+ __u64 vxrs[__NUM_VXRS_LOW];
int i;
- if (__copy_from_user(&gprs_high, uregs, sizeof(gprs_high)))
+ /* Restore high gprs from signal stack */
+ if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high,
+ sizeof(&sregs_ext->gprs_high)))
return -EFAULT;
for (i = 0; i < NUM_GPRS; i++)
*(__u32 *)&regs->gprs[i] = gprs_high[i];
+
+ /* Restore vector registers from signal stack */
+ if (current->thread.vxrs) {
+ if (__copy_from_user(vxrs, &sregs_ext->vxrs_low,
+ sizeof(sregs_ext->vxrs_low)) ||
+ __copy_from_user(current->thread.vxrs + __NUM_VXRS_LOW,
+ &sregs_ext->vxrs_high,
+ sizeof(sregs_ext->vxrs_high)))
+ return -EFAULT;
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ *((__u64 *)(current->thread.vxrs + i) + 1) = vxrs[i];
+ }
return 0;
}
@@ -252,8 +310,9 @@ COMPAT_SYSCALL_DEFINE0(sigreturn)
set_current_blocked(&set);
if (restore_sigregs32(regs, &frame->sregs))
goto badframe;
- if (restore_sigregs_gprs_high(regs, frame->gprs_high))
+ if (restore_sigregs_ext32(regs, &frame->sregs_ext))
goto badframe;
+ load_sigregs();
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
@@ -269,12 +328,13 @@ COMPAT_SYSCALL_DEFINE0(rt_sigreturn)
if (__copy_from_user(&set, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
set_current_blocked(&set);
+ if (compat_restore_altstack(&frame->uc.uc_stack))
+ goto badframe;
if (restore_sigregs32(regs, &frame->uc.uc_mcontext))
goto badframe;
- if (restore_sigregs_gprs_high(regs, frame->gprs_high))
+ if (restore_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext))
goto badframe;
- if (compat_restore_altstack(&frame->uc.uc_stack))
- goto badframe;
+ load_sigregs();
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
@@ -324,37 +384,64 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
int sig = ksig->sig;
- sigframe32 __user *frame = get_sigframe(&ksig->ka, regs, sizeof(sigframe32));
-
+ sigframe32 __user *frame;
+ struct sigcontext32 sc;
+ unsigned long restorer;
+ size_t frame_size;
+
+ /*
+ * gprs_high are always present for 31-bit compat tasks.
+ * The space for vector registers is only allocated if
+ * the machine supports it
+ */
+ frame_size = sizeof(*frame) - sizeof(frame->sregs_ext.__reserved);
+ if (!MACHINE_HAS_VX)
+ frame_size -= sizeof(frame->sregs_ext.vxrs_low) +
+ sizeof(frame->sregs_ext.vxrs_high);
+ frame = get_sigframe(&ksig->ka, regs, frame_size);
if (frame == (void __user *) -1UL)
return -EFAULT;
- if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32))
+ /* Set up backchain. */
+ if (__put_user(regs->gprs[15], (unsigned int __user *) frame))
+ return -EFAULT;
+
+ /* Create struct sigcontext32 on the signal stack */
+ memcpy(&sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE32);
+ sc.sregs = (__u32)(unsigned long __force) &frame->sregs;
+ if (__copy_to_user(&frame->sc, &sc, sizeof(frame->sc)))
return -EFAULT;
+ /* Store registers needed to create the signal frame */
+ store_sigregs();
+
+ /* Create _sigregs32 on the signal stack */
if (save_sigregs32(regs, &frame->sregs))
return -EFAULT;
- if (save_sigregs_gprs_high(regs, frame->gprs_high))
+
+ /* Place signal number on stack to allow backtrace from handler. */
+ if (__put_user(regs->gprs[2], (int __force __user *) &frame->signo))
return -EFAULT;
- if (__put_user((unsigned long) &frame->sregs, &frame->sc.sregs))
+
+ /* Create _sigregs_ext32 on the signal stack */
+ if (save_sigregs_ext32(regs, &frame->sregs_ext))
return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- regs->gprs[14] = (__u64 __force) ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE;
+ restorer = (unsigned long __force)
+ ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE;
} else {
- regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE;
- if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn,
- (u16 __force __user *)(frame->retcode)))
+ /* Signal frames without vectors registers are short ! */
+ __u16 __user *svc = (void *) frame + frame_size - 2;
+ if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
+ restorer = (unsigned long __force) svc | PSW32_ADDR_AMODE;
}
- /* Set up backchain. */
- if (__put_user(regs->gprs[15], (unsigned int __user *) frame))
- return -EFAULT;
-
/* Set up registers for signal handler */
+ regs->gprs[14] = restorer;
regs->gprs[15] = (__force __u64) frame;
/* Force 31 bit amode and default user address space control. */
regs->psw.mask = PSW_MASK_BA |
@@ -375,50 +462,69 @@ static int setup_frame32(struct ksignal *ksig, sigset_t *set,
regs->gprs[6] = task_thread_info(current)->last_break;
}
- /* Place signal number on stack to allow backtrace from handler. */
- if (__put_user(regs->gprs[2], (int __force __user *) &frame->signo))
- return -EFAULT;
return 0;
}
static int setup_rt_frame32(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
- int err = 0;
- rt_sigframe32 __user *frame = get_sigframe(&ksig->ka, regs, sizeof(rt_sigframe32));
-
+ rt_sigframe32 __user *frame;
+ unsigned long restorer;
+ size_t frame_size;
+ u32 uc_flags;
+
+ frame_size = sizeof(*frame) -
+ sizeof(frame->uc.uc_mcontext_ext.__reserved);
+ /*
+ * gprs_high are always present for 31-bit compat tasks.
+ * The space for vector registers is only allocated if
+ * the machine supports it
+ */
+ uc_flags = UC_GPRS_HIGH;
+ if (MACHINE_HAS_VX) {
+ if (current->thread.vxrs)
+ uc_flags |= UC_VXRS;
+ } else
+ frame_size -= sizeof(frame->uc.uc_mcontext_ext.vxrs_low) +
+ sizeof(frame->uc.uc_mcontext_ext.vxrs_high);
+ frame = get_sigframe(&ksig->ka, regs, frame_size);
if (frame == (void __user *) -1UL)
return -EFAULT;
- if (copy_siginfo_to_user32(&frame->info, &ksig->info))
- return -EFAULT;
-
- /* Create the ucontext. */
- err |= __put_user(UC_EXTENDED, &frame->uc.uc_flags);
- err |= __put_user(0, &frame->uc.uc_link);
- err |= __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]);
- err |= save_sigregs32(regs, &frame->uc.uc_mcontext);
- err |= save_sigregs_gprs_high(regs, frame->gprs_high);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- if (err)
+ /* Set up backchain. */
+ if (__put_user(regs->gprs[15], (unsigned int __force __user *) frame))
return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- regs->gprs[14] = (__u64 __force) ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE;
+ restorer = (unsigned long __force)
+ ksig->ka.sa.sa_restorer | PSW32_ADDR_AMODE;
} else {
- regs->gprs[14] = (__u64 __force) frame->retcode | PSW32_ADDR_AMODE;
- if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn,
- (u16 __force __user *)(frame->retcode)))
+ __u16 __user *svc = &frame->svc_insn;
+ if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, svc))
return -EFAULT;
+ restorer = (unsigned long __force) svc | PSW32_ADDR_AMODE;
}
- /* Set up backchain. */
- if (__put_user(regs->gprs[15], (unsigned int __force __user *) frame))
+ /* Create siginfo on the signal stack */
+ if (copy_siginfo_to_user32(&frame->info, &ksig->info))
+ return -EFAULT;
+
+ /* Store registers needed to create the signal frame */
+ store_sigregs();
+
+ /* Create ucontext on the signal stack. */
+ if (__put_user(uc_flags, &frame->uc.uc_flags) ||
+ __put_user(0, &frame->uc.uc_link) ||
+ __compat_save_altstack(&frame->uc.uc_stack, regs->gprs[15]) ||
+ save_sigregs32(regs, &frame->uc.uc_mcontext) ||
+ __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)) ||
+ save_sigregs_ext32(regs, &frame->uc.uc_mcontext_ext))
return -EFAULT;
/* Set up registers for signal handler */
+ regs->gprs[14] = restorer;
regs->gprs[15] = (__force __u64) frame;
/* Force 31 bit amode and default user address space control. */
regs->psw.mask = PSW_MASK_BA |
diff --git a/arch/s390/kernel/crash_dump.c b/arch/s390/kernel/crash_dump.c
index a3b9150e6802..9f73c8059022 100644
--- a/arch/s390/kernel/crash_dump.c
+++ b/arch/s390/kernel/crash_dump.c
@@ -46,9 +46,9 @@ struct dump_save_areas dump_save_areas;
/*
* Allocate and add a save area for a CPU
*/
-struct save_area *dump_save_area_create(int cpu)
+struct save_area_ext *dump_save_area_create(int cpu)
{
- struct save_area **save_areas, *save_area;
+ struct save_area_ext **save_areas, *save_area;
save_area = kmalloc(sizeof(*save_area), GFP_KERNEL);
if (!save_area)
@@ -386,9 +386,45 @@ static void *nt_s390_prefix(void *ptr, struct save_area *sa)
}
/*
+ * Initialize vxrs high note (full 128 bit VX registers 16-31)
+ */
+static void *nt_s390_vx_high(void *ptr, __vector128 *vx_regs)
+{
+ return nt_init(ptr, NT_S390_VXRS_HIGH, &vx_regs[16],
+ 16 * sizeof(__vector128), KEXEC_CORE_NOTE_NAME);
+}
+
+/*
+ * Initialize vxrs low note (lower halves of VX registers 0-15)
+ */
+static void *nt_s390_vx_low(void *ptr, __vector128 *vx_regs)
+{
+ Elf64_Nhdr *note;
+ u64 len;
+ int i;
+
+ note = (Elf64_Nhdr *)ptr;
+ note->n_namesz = strlen(KEXEC_CORE_NOTE_NAME) + 1;
+ note->n_descsz = 16 * 8;
+ note->n_type = NT_S390_VXRS_LOW;
+ len = sizeof(Elf64_Nhdr);
+
+ memcpy(ptr + len, KEXEC_CORE_NOTE_NAME, note->n_namesz);
+ len = roundup(len + note->n_namesz, 4);
+
+ ptr += len;
+ /* Copy lower halves of SIMD registers 0-15 */
+ for (i = 0; i < 16; i++) {
+ memcpy(ptr, &vx_regs[i], 8);
+ ptr += 8;
+ }
+ return ptr;
+}
+
+/*
* Fill ELF notes for one CPU with save area registers
*/
-void *fill_cpu_elf_notes(void *ptr, struct save_area *sa)
+void *fill_cpu_elf_notes(void *ptr, struct save_area *sa, __vector128 *vx_regs)
{
ptr = nt_prstatus(ptr, sa);
ptr = nt_fpregset(ptr, sa);
@@ -397,6 +433,10 @@ void *fill_cpu_elf_notes(void *ptr, struct save_area *sa)
ptr = nt_s390_tod_preg(ptr, sa);
ptr = nt_s390_ctrs(ptr, sa);
ptr = nt_s390_prefix(ptr, sa);
+ if (MACHINE_HAS_VX && vx_regs) {
+ ptr = nt_s390_vx_low(ptr, vx_regs);
+ ptr = nt_s390_vx_high(ptr, vx_regs);
+ }
return ptr;
}
@@ -484,7 +524,7 @@ static int get_cpu_cnt(void)
int i, cpus = 0;
for (i = 0; i < dump_save_areas.count; i++) {
- if (dump_save_areas.areas[i]->pref_reg == 0)
+ if (dump_save_areas.areas[i]->sa.pref_reg == 0)
continue;
cpus++;
}
@@ -530,17 +570,17 @@ static void loads_init(Elf64_Phdr *phdr, u64 loads_offset)
*/
static void *notes_init(Elf64_Phdr *phdr, void *ptr, u64 notes_offset)
{
- struct save_area *sa;
+ struct save_area_ext *sa_ext;
void *ptr_start = ptr;
int i;
ptr = nt_prpsinfo(ptr);
for (i = 0; i < dump_save_areas.count; i++) {
- sa = dump_save_areas.areas[i];
- if (sa->pref_reg == 0)
+ sa_ext = dump_save_areas.areas[i];
+ if (sa_ext->sa.pref_reg == 0)
continue;
- ptr = fill_cpu_elf_notes(ptr, sa);
+ ptr = fill_cpu_elf_notes(ptr, &sa_ext->sa, sa_ext->vx_regs);
}
ptr = nt_vmcoreinfo(ptr);
memset(phdr, 0, sizeof(*phdr));
@@ -581,7 +621,7 @@ int elfcorehdr_alloc(unsigned long long *addr, unsigned long long *size)
mem_chunk_cnt = get_mem_chunk_cnt();
- alloc_size = 0x1000 + get_cpu_cnt() * 0x300 +
+ alloc_size = 0x1000 + get_cpu_cnt() * 0x4a0 +
mem_chunk_cnt * sizeof(Elf64_Phdr);
hdr = kzalloc_panic(alloc_size);
/* Init elf header */
diff --git a/arch/s390/kernel/dis.c b/arch/s390/kernel/dis.c
index 993efe6a887c..f3762937dd82 100644
--- a/arch/s390/kernel/dis.c
+++ b/arch/s390/kernel/dis.c
@@ -60,6 +60,11 @@ enum {
A_28, /* Access reg. starting at position 28 */
C_8, /* Control reg. starting at position 8 */
C_12, /* Control reg. starting at position 12 */
+ V_8, /* Vector reg. starting at position 8, extension bit at 36 */
+ V_12, /* Vector reg. starting at position 12, extension bit at 37 */
+ V_16, /* Vector reg. starting at position 16, extension bit at 38 */
+ V_32, /* Vector reg. starting at position 32, extension bit at 39 */
+ W_12, /* Vector reg. at bit 12, extension at bit 37, used as index */
B_16, /* Base register starting at position 16 */
B_32, /* Base register starting at position 32 */
X_12, /* Index register starting at position 12 */
@@ -82,6 +87,8 @@ enum {
U8_24, /* 8 bit unsigned value starting at 24 */
U8_32, /* 8 bit unsigned value starting at 32 */
I8_8, /* 8 bit signed value starting at 8 */
+ I8_16, /* 8 bit signed value starting at 16 */
+ I8_24, /* 8 bit signed value starting at 24 */
I8_32, /* 8 bit signed value starting at 32 */
J12_12, /* PC relative offset at 12 */
I16_16, /* 16 bit signed value starting at 16 */
@@ -96,6 +103,9 @@ enum {
U32_16, /* 32 bit unsigned value starting at 16 */
M_16, /* 4 bit optional mask starting at 16 */
M_20, /* 4 bit optional mask starting at 20 */
+ M_24, /* 4 bit optional mask starting at 24 */
+ M_28, /* 4 bit optional mask starting at 28 */
+ M_32, /* 4 bit optional mask starting at 32 */
RO_28, /* optional GPR starting at position 28 */
};
@@ -130,7 +140,7 @@ enum {
INSTR_RSY_RDRM,
INSTR_RS_AARD, INSTR_RS_CCRD, INSTR_RS_R0RD, INSTR_RS_RRRD,
INSTR_RS_RURD,
- INSTR_RXE_FRRD, INSTR_RXE_RRRD,
+ INSTR_RXE_FRRD, INSTR_RXE_RRRD, INSTR_RXE_RRRDM,
INSTR_RXF_FRRDF,
INSTR_RXY_FRRD, INSTR_RXY_RRRD, INSTR_RXY_URRD,
INSTR_RX_FRRD, INSTR_RX_RRRD, INSTR_RX_URRD,
@@ -143,6 +153,17 @@ enum {
INSTR_SS_L0RDRD, INSTR_SS_LIRDRD, INSTR_SS_LLRDRD, INSTR_SS_RRRDRD,
INSTR_SS_RRRDRD2, INSTR_SS_RRRDRD3,
INSTR_S_00, INSTR_S_RD,
+ INSTR_VRI_V0IM, INSTR_VRI_V0I0, INSTR_VRI_V0IIM, INSTR_VRI_VVIM,
+ INSTR_VRI_VVV0IM, INSTR_VRI_VVV0I0, INSTR_VRI_VVIMM,
+ INSTR_VRR_VV00MMM, INSTR_VRR_VV000MM, INSTR_VRR_VV0000M,
+ INSTR_VRR_VV00000, INSTR_VRR_VVV0M0M, INSTR_VRR_VV00M0M,
+ INSTR_VRR_VVV000M, INSTR_VRR_VVV000V, INSTR_VRR_VVV0000,
+ INSTR_VRR_VVV0MMM, INSTR_VRR_VVV00MM, INSTR_VRR_VVVMM0V,
+ INSTR_VRR_VVVM0MV, INSTR_VRR_VVVM00V, INSTR_VRR_VRR0000,
+ INSTR_VRS_VVRDM, INSTR_VRS_VVRD0, INSTR_VRS_VRRDM, INSTR_VRS_VRRD0,
+ INSTR_VRS_RVRDM,
+ INSTR_VRV_VVRDM, INSTR_VRV_VWRDM,
+ INSTR_VRX_VRRDM, INSTR_VRX_VRRD0,
};
static const struct s390_operand operands[] =
@@ -168,6 +189,11 @@ static const struct s390_operand operands[] =
[A_28] = { 4, 28, OPERAND_AR },
[C_8] = { 4, 8, OPERAND_CR },
[C_12] = { 4, 12, OPERAND_CR },
+ [V_8] = { 4, 8, OPERAND_VR },
+ [V_12] = { 4, 12, OPERAND_VR },
+ [V_16] = { 4, 16, OPERAND_VR },
+ [V_32] = { 4, 32, OPERAND_VR },
+ [W_12] = { 4, 12, OPERAND_INDEX | OPERAND_VR },
[B_16] = { 4, 16, OPERAND_BASE | OPERAND_GPR },
[B_32] = { 4, 32, OPERAND_BASE | OPERAND_GPR },
[X_12] = { 4, 12, OPERAND_INDEX | OPERAND_GPR },
@@ -190,6 +216,11 @@ static const struct s390_operand operands[] =
[U8_24] = { 8, 24, 0 },
[U8_32] = { 8, 32, 0 },
[J12_12] = { 12, 12, OPERAND_PCREL },
+ [I8_8] = { 8, 8, OPERAND_SIGNED },
+ [I8_16] = { 8, 16, OPERAND_SIGNED },
+ [I8_24] = { 8, 24, OPERAND_SIGNED },
+ [I8_32] = { 8, 32, OPERAND_SIGNED },
+ [I16_32] = { 16, 32, OPERAND_SIGNED },
[I16_16] = { 16, 16, OPERAND_SIGNED },
[U16_16] = { 16, 16, 0 },
[U16_32] = { 16, 32, 0 },
@@ -202,6 +233,9 @@ static const struct s390_operand operands[] =
[U32_16] = { 32, 16, 0 },
[M_16] = { 4, 16, 0 },
[M_20] = { 4, 20, 0 },
+ [M_24] = { 4, 24, 0 },
+ [M_28] = { 4, 28, 0 },
+ [M_32] = { 4, 32, 0 },
[RO_28] = { 4, 28, OPERAND_GPR }
};
@@ -283,6 +317,7 @@ static const unsigned char formats[][7] = {
[INSTR_RS_RURD] = { 0xff, R_8,U4_12,D_20,B_16,0,0 },
[INSTR_RXE_FRRD] = { 0xff, F_8,D_20,X_12,B_16,0,0 },
[INSTR_RXE_RRRD] = { 0xff, R_8,D_20,X_12,B_16,0,0 },
+ [INSTR_RXE_RRRDM] = { 0xff, R_8,D_20,X_12,B_16,M_32,0 },
[INSTR_RXF_FRRDF] = { 0xff, F_32,F_8,D_20,X_12,B_16,0 },
[INSTR_RXY_FRRD] = { 0xff, F_8,D20_20,X_12,B_16,0,0 },
[INSTR_RXY_RRRD] = { 0xff, R_8,D20_20,X_12,B_16,0,0 },
@@ -307,6 +342,37 @@ static const unsigned char formats[][7] = {
[INSTR_SS_RRRDRD] = { 0xff, D_20,R_8,B_16,D_36,B_32,R_12 },
[INSTR_S_00] = { 0xff, 0,0,0,0,0,0 },
[INSTR_S_RD] = { 0xff, D_20,B_16,0,0,0,0 },
+ [INSTR_VRI_V0IM] = { 0xff, V_8,I16_16,M_32,0,0,0 },
+ [INSTR_VRI_V0I0] = { 0xff, V_8,I16_16,0,0,0,0 },
+ [INSTR_VRI_V0IIM] = { 0xff, V_8,I8_16,I8_24,M_32,0,0 },
+ [INSTR_VRI_VVIM] = { 0xff, V_8,I16_16,V_12,M_32,0,0 },
+ [INSTR_VRI_VVV0IM]= { 0xff, V_8,V_12,V_16,I8_24,M_32,0 },
+ [INSTR_VRI_VVV0I0]= { 0xff, V_8,V_12,V_16,I8_24,0,0 },
+ [INSTR_VRI_VVIMM] = { 0xff, V_8,V_12,I16_16,M_32,M_28,0 },
+ [INSTR_VRR_VV00MMM]={ 0xff, V_8,V_12,M_32,M_28,M_24,0 },
+ [INSTR_VRR_VV000MM]={ 0xff, V_8,V_12,M_32,M_28,0,0 },
+ [INSTR_VRR_VV0000M]={ 0xff, V_8,V_12,M_32,0,0,0 },
+ [INSTR_VRR_VV00000]={ 0xff, V_8,V_12,0,0,0,0 },
+ [INSTR_VRR_VVV0M0M]={ 0xff, V_8,V_12,V_16,M_32,M_24,0 },
+ [INSTR_VRR_VV00M0M]={ 0xff, V_8,V_12,M_32,M_24,0,0 },
+ [INSTR_VRR_VVV000M]={ 0xff, V_8,V_12,V_16,M_32,0,0 },
+ [INSTR_VRR_VVV000V]={ 0xff, V_8,V_12,V_16,V_32,0,0 },
+ [INSTR_VRR_VVV0000]={ 0xff, V_8,V_12,V_16,0,0,0 },
+ [INSTR_VRR_VVV0MMM]={ 0xff, V_8,V_12,V_16,M_32,M_28,M_24 },
+ [INSTR_VRR_VVV00MM]={ 0xff, V_8,V_12,V_16,M_32,M_28,0 },
+ [INSTR_VRR_VVVMM0V]={ 0xff, V_8,V_12,V_16,V_32,M_20,M_24 },
+ [INSTR_VRR_VVVM0MV]={ 0xff, V_8,V_12,V_16,V_32,M_28,M_20 },
+ [INSTR_VRR_VVVM00V]={ 0xff, V_8,V_12,V_16,V_32,M_20,0 },
+ [INSTR_VRR_VRR0000]={ 0xff, V_8,R_12,R_16,0,0,0 },
+ [INSTR_VRS_VVRDM] = { 0xff, V_8,V_12,D_20,B_16,M_32,0 },
+ [INSTR_VRS_VVRD0] = { 0xff, V_8,V_12,D_20,B_16,0,0 },
+ [INSTR_VRS_VRRDM] = { 0xff, V_8,R_12,D_20,B_16,M_32,0 },
+ [INSTR_VRS_VRRD0] = { 0xff, V_8,R_12,D_20,B_16,0,0 },
+ [INSTR_VRS_RVRDM] = { 0xff, R_8,V_12,D_20,B_16,M_32,0 },
+ [INSTR_VRV_VVRDM] = { 0xff, V_8,V_12,D_20,B_16,M_32,0 },
+ [INSTR_VRV_VWRDM] = { 0xff, V_8,D_20,W_12,B_16,M_32,0 },
+ [INSTR_VRX_VRRDM] = { 0xff, V_8,D_20,X_12,B_16,M_32,0 },
+ [INSTR_VRX_VRRD0] = { 0xff, V_8,D_20,X_12,B_16,0,0 },
};
enum {
@@ -381,6 +447,11 @@ enum {
LONG_INSN_MPCIFC,
LONG_INSN_STPCIFC,
LONG_INSN_PCISTB,
+ LONG_INSN_VPOPCT,
+ LONG_INSN_VERLLV,
+ LONG_INSN_VESRAV,
+ LONG_INSN_VESRLV,
+ LONG_INSN_VSBCBI
};
static char *long_insn_name[] = {
@@ -455,6 +526,11 @@ static char *long_insn_name[] = {
[LONG_INSN_MPCIFC] = "mpcifc",
[LONG_INSN_STPCIFC] = "stpcifc",
[LONG_INSN_PCISTB] = "pcistb",
+ [LONG_INSN_VPOPCT] = "vpopct",
+ [LONG_INSN_VERLLV] = "verllv",
+ [LONG_INSN_VESRAV] = "vesrav",
+ [LONG_INSN_VESRLV] = "vesrlv",
+ [LONG_INSN_VSBCBI] = "vsbcbi",
};
static struct s390_insn opcode[] = {
@@ -1369,6 +1445,150 @@ static struct s390_insn opcode_e5[] = {
{ "", 0, INSTR_INVALID }
};
+static struct s390_insn opcode_e7[] = {
+#ifdef CONFIG_64BIT
+ { "lcbb", 0x27, INSTR_RXE_RRRDM },
+ { "vgef", 0x13, INSTR_VRV_VVRDM },
+ { "vgeg", 0x12, INSTR_VRV_VVRDM },
+ { "vgbm", 0x44, INSTR_VRI_V0I0 },
+ { "vgm", 0x46, INSTR_VRI_V0IIM },
+ { "vl", 0x06, INSTR_VRX_VRRD0 },
+ { "vlr", 0x56, INSTR_VRR_VV00000 },
+ { "vlrp", 0x05, INSTR_VRX_VRRDM },
+ { "vleb", 0x00, INSTR_VRX_VRRDM },
+ { "vleh", 0x01, INSTR_VRX_VRRDM },
+ { "vlef", 0x03, INSTR_VRX_VRRDM },
+ { "vleg", 0x02, INSTR_VRX_VRRDM },
+ { "vleib", 0x40, INSTR_VRI_V0IM },
+ { "vleih", 0x41, INSTR_VRI_V0IM },
+ { "vleif", 0x43, INSTR_VRI_V0IM },
+ { "vleig", 0x42, INSTR_VRI_V0IM },
+ { "vlgv", 0x21, INSTR_VRS_RVRDM },
+ { "vllez", 0x04, INSTR_VRX_VRRDM },
+ { "vlm", 0x36, INSTR_VRS_VVRD0 },
+ { "vlbb", 0x07, INSTR_VRX_VRRDM },
+ { "vlvg", 0x22, INSTR_VRS_VRRDM },
+ { "vlvgp", 0x62, INSTR_VRR_VRR0000 },
+ { "vll", 0x37, INSTR_VRS_VRRD0 },
+ { "vmrh", 0x61, INSTR_VRR_VVV000M },
+ { "vmrl", 0x60, INSTR_VRR_VVV000M },
+ { "vpk", 0x94, INSTR_VRR_VVV000M },
+ { "vpks", 0x97, INSTR_VRR_VVV0M0M },
+ { "vpkls", 0x95, INSTR_VRR_VVV0M0M },
+ { "vperm", 0x8c, INSTR_VRR_VVV000V },
+ { "vpdi", 0x84, INSTR_VRR_VVV000M },
+ { "vrep", 0x4d, INSTR_VRI_VVIM },
+ { "vrepi", 0x45, INSTR_VRI_V0IM },
+ { "vscef", 0x1b, INSTR_VRV_VWRDM },
+ { "vsceg", 0x1a, INSTR_VRV_VWRDM },
+ { "vsel", 0x8d, INSTR_VRR_VVV000V },
+ { "vseg", 0x5f, INSTR_VRR_VV0000M },
+ { "vst", 0x0e, INSTR_VRX_VRRD0 },
+ { "vsteb", 0x08, INSTR_VRX_VRRDM },
+ { "vsteh", 0x09, INSTR_VRX_VRRDM },
+ { "vstef", 0x0b, INSTR_VRX_VRRDM },
+ { "vsteg", 0x0a, INSTR_VRX_VRRDM },
+ { "vstm", 0x3e, INSTR_VRS_VVRD0 },
+ { "vstl", 0x3f, INSTR_VRS_VRRD0 },
+ { "vuph", 0xd7, INSTR_VRR_VV0000M },
+ { "vuplh", 0xd5, INSTR_VRR_VV0000M },
+ { "vupl", 0xd6, INSTR_VRR_VV0000M },
+ { "vupll", 0xd4, INSTR_VRR_VV0000M },
+ { "va", 0xf3, INSTR_VRR_VVV000M },
+ { "vacc", 0xf1, INSTR_VRR_VVV000M },
+ { "vac", 0xbb, INSTR_VRR_VVVM00V },
+ { "vaccc", 0xb9, INSTR_VRR_VVVM00V },
+ { "vn", 0x68, INSTR_VRR_VVV0000 },
+ { "vnc", 0x69, INSTR_VRR_VVV0000 },
+ { "vavg", 0xf2, INSTR_VRR_VVV000M },
+ { "vavgl", 0xf0, INSTR_VRR_VVV000M },
+ { "vcksm", 0x66, INSTR_VRR_VVV0000 },
+ { "vec", 0xdb, INSTR_VRR_VV0000M },
+ { "vecl", 0xd9, INSTR_VRR_VV0000M },
+ { "vceq", 0xf8, INSTR_VRR_VVV0M0M },
+ { "vch", 0xfb, INSTR_VRR_VVV0M0M },
+ { "vchl", 0xf9, INSTR_VRR_VVV0M0M },
+ { "vclz", 0x53, INSTR_VRR_VV0000M },
+ { "vctz", 0x52, INSTR_VRR_VV0000M },
+ { "vx", 0x6d, INSTR_VRR_VVV0000 },
+ { "vgfm", 0xb4, INSTR_VRR_VVV000M },
+ { "vgfma", 0xbc, INSTR_VRR_VVVM00V },
+ { "vlc", 0xde, INSTR_VRR_VV0000M },
+ { "vlp", 0xdf, INSTR_VRR_VV0000M },
+ { "vmx", 0xff, INSTR_VRR_VVV000M },
+ { "vmxl", 0xfd, INSTR_VRR_VVV000M },
+ { "vmn", 0xfe, INSTR_VRR_VVV000M },
+ { "vmnl", 0xfc, INSTR_VRR_VVV000M },
+ { "vmal", 0xaa, INSTR_VRR_VVVM00V },
+ { "vmae", 0xae, INSTR_VRR_VVVM00V },
+ { "vmale", 0xac, INSTR_VRR_VVVM00V },
+ { "vmah", 0xab, INSTR_VRR_VVVM00V },
+ { "vmalh", 0xa9, INSTR_VRR_VVVM00V },
+ { "vmao", 0xaf, INSTR_VRR_VVVM00V },
+ { "vmalo", 0xad, INSTR_VRR_VVVM00V },
+ { "vmh", 0xa3, INSTR_VRR_VVV000M },
+ { "vmlh", 0xa1, INSTR_VRR_VVV000M },
+ { "vml", 0xa2, INSTR_VRR_VVV000M },
+ { "vme", 0xa6, INSTR_VRR_VVV000M },
+ { "vmle", 0xa4, INSTR_VRR_VVV000M },
+ { "vmo", 0xa7, INSTR_VRR_VVV000M },
+ { "vmlo", 0xa5, INSTR_VRR_VVV000M },
+ { "vno", 0x6b, INSTR_VRR_VVV0000 },
+ { "vo", 0x6a, INSTR_VRR_VVV0000 },
+ { { 0, LONG_INSN_VPOPCT }, 0x50, INSTR_VRR_VV0000M },
+ { { 0, LONG_INSN_VERLLV }, 0x73, INSTR_VRR_VVV000M },
+ { "verll", 0x33, INSTR_VRS_VVRDM },
+ { "verim", 0x72, INSTR_VRI_VVV0IM },
+ { "veslv", 0x70, INSTR_VRR_VVV000M },
+ { "vesl", 0x30, INSTR_VRS_VVRDM },
+ { { 0, LONG_INSN_VESRAV }, 0x7a, INSTR_VRR_VVV000M },
+ { "vesra", 0x3a, INSTR_VRS_VVRDM },
+ { { 0, LONG_INSN_VESRLV }, 0x78, INSTR_VRR_VVV000M },
+ { "vesrl", 0x38, INSTR_VRS_VVRDM },
+ { "vsl", 0x74, INSTR_VRR_VVV0000 },
+ { "vslb", 0x75, INSTR_VRR_VVV0000 },
+ { "vsldb", 0x77, INSTR_VRI_VVV0I0 },
+ { "vsra", 0x7e, INSTR_VRR_VVV0000 },
+ { "vsrab", 0x7f, INSTR_VRR_VVV0000 },
+ { "vsrl", 0x7c, INSTR_VRR_VVV0000 },
+ { "vsrlb", 0x7d, INSTR_VRR_VVV0000 },
+ { "vs", 0xf7, INSTR_VRR_VVV000M },
+ { "vscb", 0xf5, INSTR_VRR_VVV000M },
+ { "vsb", 0xbf, INSTR_VRR_VVVM00V },
+ { { 0, LONG_INSN_VSBCBI }, 0xbd, INSTR_VRR_VVVM00V },
+ { "vsumg", 0x65, INSTR_VRR_VVV000M },
+ { "vsumq", 0x67, INSTR_VRR_VVV000M },
+ { "vsum", 0x64, INSTR_VRR_VVV000M },
+ { "vtm", 0xd8, INSTR_VRR_VV00000 },
+ { "vfae", 0x82, INSTR_VRR_VVV0M0M },
+ { "vfee", 0x80, INSTR_VRR_VVV0M0M },
+ { "vfene", 0x81, INSTR_VRR_VVV0M0M },
+ { "vistr", 0x5c, INSTR_VRR_VV00M0M },
+ { "vstrc", 0x8a, INSTR_VRR_VVVMM0V },
+ { "vfa", 0xe3, INSTR_VRR_VVV00MM },
+ { "wfc", 0xcb, INSTR_VRR_VV000MM },
+ { "wfk", 0xca, INSTR_VRR_VV000MM },
+ { "vfce", 0xe8, INSTR_VRR_VVV0MMM },
+ { "vfch", 0xeb, INSTR_VRR_VVV0MMM },
+ { "vfche", 0xea, INSTR_VRR_VVV0MMM },
+ { "vcdg", 0xc3, INSTR_VRR_VV00MMM },
+ { "vcdlg", 0xc1, INSTR_VRR_VV00MMM },
+ { "vcgd", 0xc2, INSTR_VRR_VV00MMM },
+ { "vclgd", 0xc0, INSTR_VRR_VV00MMM },
+ { "vfd", 0xe5, INSTR_VRR_VVV00MM },
+ { "vfi", 0xc7, INSTR_VRR_VV00MMM },
+ { "vlde", 0xc4, INSTR_VRR_VV000MM },
+ { "vled", 0xc5, INSTR_VRR_VV00MMM },
+ { "vfm", 0xe7, INSTR_VRR_VVV00MM },
+ { "vfma", 0x8f, INSTR_VRR_VVVM0MV },
+ { "vfms", 0x8e, INSTR_VRR_VVVM0MV },
+ { "vfpso", 0xcc, INSTR_VRR_VV00MMM },
+ { "vfsq", 0xce, INSTR_VRR_VV000MM },
+ { "vfs", 0xe2, INSTR_VRR_VVV00MM },
+ { "vftci", 0x4a, INSTR_VRI_VVIMM },
+#endif
+};
+
static struct s390_insn opcode_eb[] = {
#ifdef CONFIG_64BIT
{ "lmg", 0x04, INSTR_RSY_RRRD },
@@ -1552,16 +1772,17 @@ static struct s390_insn opcode_ed[] = {
static unsigned int extract_operand(unsigned char *code,
const struct s390_operand *operand)
{
+ unsigned char *cp;
unsigned int val;
int bits;
/* Extract fragments of the operand byte for byte. */
- code += operand->shift / 8;
+ cp = code + operand->shift / 8;
bits = (operand->shift & 7) + operand->bits;
val = 0;
do {
val <<= 8;
- val |= (unsigned int) *code++;
+ val |= (unsigned int) *cp++;
bits -= 8;
} while (bits > 0);
val >>= -bits;
@@ -1571,6 +1792,18 @@ static unsigned int extract_operand(unsigned char *code,
if (operand->bits == 20 && operand->shift == 20)
val = (val & 0xff) << 12 | (val & 0xfff00) >> 8;
+ /* Check for register extensions bits for vector registers. */
+ if (operand->flags & OPERAND_VR) {
+ if (operand->shift == 8)
+ val |= (code[4] & 8) << 1;
+ else if (operand->shift == 12)
+ val |= (code[4] & 4) << 2;
+ else if (operand->shift == 16)
+ val |= (code[4] & 2) << 3;
+ else if (operand->shift == 32)
+ val |= (code[4] & 1) << 4;
+ }
+
/* Sign extend value if the operand is signed or pc relative. */
if ((operand->flags & (OPERAND_SIGNED | OPERAND_PCREL)) &&
(val & (1U << (operand->bits - 1))))
@@ -1639,6 +1872,10 @@ struct s390_insn *find_insn(unsigned char *code)
case 0xe5:
table = opcode_e5;
break;
+ case 0xe7:
+ table = opcode_e7;
+ opfrag = code[5];
+ break;
case 0xeb:
table = opcode_eb;
opfrag = code[5];
@@ -1734,6 +1971,8 @@ static int print_insn(char *buffer, unsigned char *code, unsigned long addr)
ptr += sprintf(ptr, "%%a%i", value);
else if (operand->flags & OPERAND_CR)
ptr += sprintf(ptr, "%%c%i", value);
+ else if (operand->flags & OPERAND_VR)
+ ptr += sprintf(ptr, "%%v%i", value);
else if (operand->flags & OPERAND_PCREL)
ptr += sprintf(ptr, "%lx", (signed int) value
+ addr);
diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index 0dff972a169c..cef2879edff3 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -390,10 +390,10 @@ static __init void detect_machine_facilities(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_LPP;
if (test_facility(50) && test_facility(73))
S390_lowcore.machine_flags |= MACHINE_FLAG_TE;
- if (test_facility(66))
- S390_lowcore.machine_flags |= MACHINE_FLAG_RRBM;
if (test_facility(51))
S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC;
+ if (test_facility(129))
+ S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
#endif
}
diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h
index 1aad48398d06..0554b9771c9f 100644
--- a/arch/s390/kernel/entry.h
+++ b/arch/s390/kernel/entry.h
@@ -4,7 +4,7 @@
#include <linux/types.h>
#include <linux/signal.h>
#include <asm/ptrace.h>
-#include <asm/cputime.h>
+#include <asm/idle.h>
extern void *restart_stack;
extern unsigned long suspend_zero_pages;
@@ -21,6 +21,8 @@ void psw_idle(struct s390_idle_data *, unsigned long);
asmlinkage long do_syscall_trace_enter(struct pt_regs *regs);
asmlinkage void do_syscall_trace_exit(struct pt_regs *regs);
+int alloc_vector_registers(struct task_struct *tsk);
+
void do_protection_exception(struct pt_regs *regs);
void do_dat_exception(struct pt_regs *regs);
@@ -43,8 +45,10 @@ void special_op_exception(struct pt_regs *regs);
void specification_exception(struct pt_regs *regs);
void transaction_exception(struct pt_regs *regs);
void translation_exception(struct pt_regs *regs);
+void vector_exception(struct pt_regs *regs);
void do_per_trap(struct pt_regs *regs);
+void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str);
void syscall_trace(struct pt_regs *regs, int entryexit);
void kernel_stack_overflow(struct pt_regs * regs);
void do_signal(struct pt_regs *regs);
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index f2e674c702e1..7b2e03afd017 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -42,7 +42,8 @@ STACK_SHIFT = PAGE_SHIFT + THREAD_ORDER
STACK_SIZE = 1 << STACK_SHIFT
STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE
-_TIF_WORK = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED)
+_TIF_WORK = (_TIF_SIGPENDING | _TIF_NOTIFY_RESUME | _TIF_NEED_RESCHED | \
+ _TIF_UPROBE)
_TIF_TRACE = (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
_TIF_SYSCALL_TRACEPOINT)
_CIF_WORK = (_CIF_MCCK_PENDING | _CIF_ASCE)
@@ -265,6 +266,10 @@ sysc_work:
jo sysc_mcck_pending
tm __TI_flags+7(%r12),_TIF_NEED_RESCHED
jo sysc_reschedule
+#ifdef CONFIG_UPROBES
+ tm __TI_flags+7(%r12),_TIF_UPROBE
+ jo sysc_uprobe_notify
+#endif
tm __PT_FLAGS+7(%r11),_PIF_PER_TRAP
jo sysc_singlestep
tm __TI_flags+7(%r12),_TIF_SIGPENDING
@@ -323,6 +328,16 @@ sysc_notify_resume:
jg do_notify_resume
#
+# _TIF_UPROBE is set, call uprobe_notify_resume
+#
+#ifdef CONFIG_UPROBES
+sysc_uprobe_notify:
+ lgr %r2,%r11 # pass pointer to pt_regs
+ larl %r14,sysc_return
+ jg uprobe_notify_resume
+#endif
+
+#
# _PIF_PER_TRAP is set, call do_per_trap
#
sysc_singlestep:
diff --git a/arch/s390/kernel/ftrace.c b/arch/s390/kernel/ftrace.c
index 54d6493c4a56..51d14fe5eb9a 100644
--- a/arch/s390/kernel/ftrace.c
+++ b/arch/s390/kernel/ftrace.c
@@ -1,7 +1,7 @@
/*
* Dynamic function tracer architecture backend.
*
- * Copyright IBM Corp. 2009
+ * Copyright IBM Corp. 2009,2014
*
* Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
* Martin Schwidefsky <schwidefsky@de.ibm.com>
@@ -17,100 +17,76 @@
#include <asm/asm-offsets.h>
#include "entry.h"
-#ifdef CONFIG_DYNAMIC_FTRACE
-
+void mcount_replace_code(void);
void ftrace_disable_code(void);
void ftrace_enable_insn(void);
-#ifdef CONFIG_64BIT
/*
- * The 64-bit mcount code looks like this:
+ * The mcount code looks like this:
* stg %r14,8(%r15) # offset 0
- * > larl %r1,<&counter> # offset 6
- * > brasl %r14,_mcount # offset 12
+ * larl %r1,<&counter> # offset 6
+ * brasl %r14,_mcount # offset 12
* lg %r14,8(%r15) # offset 18
- * Total length is 24 bytes. The middle two instructions of the mcount
- * block get overwritten by ftrace_make_nop / ftrace_make_call.
- * The 64-bit enabled ftrace code block looks like this:
- * stg %r14,8(%r15) # offset 0
+ * Total length is 24 bytes. The complete mcount block initially gets replaced
+ * by ftrace_make_nop. Subsequent calls to ftrace_make_call / ftrace_make_nop
+ * only patch the jg/lg instruction within the block.
+ * Note: we do not patch the first instruction to an unconditional branch,
+ * since that would break kprobes/jprobes. It is easier to leave the larl
+ * instruction in and only modify the second instruction.
+ * The enabled ftrace code block looks like this:
+ * larl %r0,.+24 # offset 0
* > lg %r1,__LC_FTRACE_FUNC # offset 6
- * > lgr %r0,%r0 # offset 12
- * > basr %r14,%r1 # offset 16
- * lg %r14,8(%15) # offset 18
- * The return points of the mcount/ftrace function have the same offset 18.
- * The 64-bit disable ftrace code block looks like this:
- * stg %r14,8(%r15) # offset 0
+ * br %r1 # offset 12
+ * brcl 0,0 # offset 14
+ * brc 0,0 # offset 20
+ * The ftrace function gets called with a non-standard C function call ABI
+ * where r0 contains the return address. It is also expected that the called
+ * function only clobbers r0 and r1, but restores r2-r15.
+ * The return point of the ftrace function has offset 24, so execution
+ * continues behind the mcount block.
+ * larl %r0,.+24 # offset 0
* > jg .+18 # offset 6
- * > lgr %r0,%r0 # offset 12
- * > basr %r14,%r1 # offset 16
- * lg %r14,8(%15) # offset 18
+ * br %r1 # offset 12
+ * brcl 0,0 # offset 14
+ * brc 0,0 # offset 20
* The jg instruction branches to offset 24 to skip as many instructions
* as possible.
*/
asm(
" .align 4\n"
+ "mcount_replace_code:\n"
+ " larl %r0,0f\n"
"ftrace_disable_code:\n"
" jg 0f\n"
- " lgr %r0,%r0\n"
- " basr %r14,%r1\n"
+ " br %r1\n"
+ " brcl 0,0\n"
+ " brc 0,0\n"
"0:\n"
" .align 4\n"
"ftrace_enable_insn:\n"
" lg %r1,"__stringify(__LC_FTRACE_FUNC)"\n");
+#define MCOUNT_BLOCK_SIZE 24
+#define MCOUNT_INSN_OFFSET 6
#define FTRACE_INSN_SIZE 6
-#else /* CONFIG_64BIT */
-/*
- * The 31-bit mcount code looks like this:
- * st %r14,4(%r15) # offset 0
- * > bras %r1,0f # offset 4
- * > .long _mcount # offset 8
- * > .long <&counter> # offset 12
- * > 0: l %r14,0(%r1) # offset 16
- * > l %r1,4(%r1) # offset 20
- * basr %r14,%r14 # offset 24
- * l %r14,4(%r15) # offset 26
- * Total length is 30 bytes. The twenty bytes starting from offset 4
- * to offset 24 get overwritten by ftrace_make_nop / ftrace_make_call.
- * The 31-bit enabled ftrace code block looks like this:
- * st %r14,4(%r15) # offset 0
- * > l %r14,__LC_FTRACE_FUNC # offset 4
- * > j 0f # offset 8
- * > .fill 12,1,0x07 # offset 12
- * 0: basr %r14,%r14 # offset 24
- * l %r14,4(%r14) # offset 26
- * The return points of the mcount/ftrace function have the same offset 26.
- * The 31-bit disabled ftrace code block looks like this:
- * st %r14,4(%r15) # offset 0
- * > j .+26 # offset 4
- * > j 0f # offset 8
- * > .fill 12,1,0x07 # offset 12
- * 0: basr %r14,%r14 # offset 24
- * l %r14,4(%r14) # offset 26
- * The j instruction branches to offset 30 to skip as many instructions
- * as possible.
- */
-asm(
- " .align 4\n"
- "ftrace_disable_code:\n"
- " j 1f\n"
- " j 0f\n"
- " .fill 12,1,0x07\n"
- "0: basr %r14,%r14\n"
- "1:\n"
- " .align 4\n"
- "ftrace_enable_insn:\n"
- " l %r14,"__stringify(__LC_FTRACE_FUNC)"\n");
-
-#define FTRACE_INSN_SIZE 4
-
-#endif /* CONFIG_64BIT */
-
+int ftrace_modify_call(struct dyn_ftrace *rec, unsigned long old_addr,
+ unsigned long addr)
+{
+ return 0;
+}
int ftrace_make_nop(struct module *mod, struct dyn_ftrace *rec,
unsigned long addr)
{
+ /* Initial replacement of the whole mcount block */
+ if (addr == MCOUNT_ADDR) {
+ if (probe_kernel_write((void *) rec->ip - MCOUNT_INSN_OFFSET,
+ mcount_replace_code,
+ MCOUNT_BLOCK_SIZE))
+ return -EPERM;
+ return 0;
+ }
if (probe_kernel_write((void *) rec->ip, ftrace_disable_code,
MCOUNT_INSN_SIZE))
return -EPERM;
@@ -135,8 +111,6 @@ int __init ftrace_dyn_arch_init(void)
return 0;
}
-#endif /* CONFIG_DYNAMIC_FTRACE */
-
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
/*
* Hook the return address and push it in the stack of return addresses
@@ -162,31 +136,26 @@ out:
return parent;
}
-#ifdef CONFIG_DYNAMIC_FTRACE
/*
* Patch the kernel code at ftrace_graph_caller location. The instruction
- * there is branch relative and save to prepare_ftrace_return. To disable
- * the call to prepare_ftrace_return we patch the bras offset to point
- * directly after the instructions. To enable the call we calculate
- * the original offset to prepare_ftrace_return and put it back.
+ * there is branch relative on condition. To enable the ftrace graph code
+ * block, we simply patch the mask field of the instruction to zero and
+ * turn the instruction into a nop.
+ * To disable the ftrace graph code the mask field will be patched to
+ * all ones, which turns the instruction into an unconditional branch.
*/
int ftrace_enable_ftrace_graph_caller(void)
{
- unsigned short offset;
+ u8 op = 0x04; /* set mask field to zero */
- offset = ((void *) prepare_ftrace_return -
- (void *) ftrace_graph_caller) / 2;
- return probe_kernel_write((void *) ftrace_graph_caller + 2,
- &offset, sizeof(offset));
+ return probe_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
}
int ftrace_disable_ftrace_graph_caller(void)
{
- static unsigned short offset = 0x0002;
+ u8 op = 0xf4; /* set mask field to all ones */
- return probe_kernel_write((void *) ftrace_graph_caller + 2,
- &offset, sizeof(offset));
+ return probe_kernel_write(__va(ftrace_graph_caller)+1, &op, sizeof(op));
}
-#endif /* CONFIG_DYNAMIC_FTRACE */
#endif /* CONFIG_FUNCTION_GRAPH_TRACER */
diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S
index e88d35d74950..d62eee11f0b5 100644
--- a/arch/s390/kernel/head.S
+++ b/arch/s390/kernel/head.S
@@ -398,7 +398,7 @@ ENTRY(startup_kdump)
xc __LC_STFL_FAC_LIST(8),__LC_STFL_FAC_LIST
#ifndef CONFIG_MARCH_G5
# check capabilities against MARCH_{G5,Z900,Z990,Z9_109,Z10}
- .insn s,0xb2b10000,__LC_STFL_FAC_LIST # store facility list
+ .insn s,0xb2b10000,0 # store facilities @ __LC_STFL_FAC_LIST
tm __LC_STFL_FAC_LIST,0x01 # stfle available ?
jz 0f
la %r0,1
diff --git a/arch/s390/kernel/idle.c b/arch/s390/kernel/idle.c
new file mode 100644
index 000000000000..c846aee7372f
--- /dev/null
+++ b/arch/s390/kernel/idle.c
@@ -0,0 +1,124 @@
+/*
+ * Idle functions for s390.
+ *
+ * Copyright IBM Corp. 2014
+ *
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/kernel_stat.h>
+#include <linux/kprobes.h>
+#include <linux/notifier.h>
+#include <linux/init.h>
+#include <linux/cpu.h>
+#include <asm/cputime.h>
+#include <asm/nmi.h>
+#include <asm/smp.h>
+#include "entry.h"
+
+static DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
+
+void __kprobes enabled_wait(void)
+{
+ struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
+ unsigned long long idle_time;
+ unsigned long psw_mask;
+
+ trace_hardirqs_on();
+
+ /* Wait for external, I/O or machine check interrupt. */
+ psw_mask = PSW_KERNEL_BITS | PSW_MASK_WAIT | PSW_MASK_DAT |
+ PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
+ clear_cpu_flag(CIF_NOHZ_DELAY);
+
+ /* Call the assembler magic in entry.S */
+ psw_idle(idle, psw_mask);
+
+ /* Account time spent with enabled wait psw loaded as idle time. */
+ idle->sequence++;
+ smp_wmb();
+ idle_time = idle->clock_idle_exit - idle->clock_idle_enter;
+ idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
+ idle->idle_time += idle_time;
+ idle->idle_count++;
+ account_idle_time(idle_time);
+ smp_wmb();
+ idle->sequence++;
+}
+
+static ssize_t show_idle_count(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
+ unsigned long long idle_count;
+ unsigned int sequence;
+
+ do {
+ sequence = ACCESS_ONCE(idle->sequence);
+ idle_count = ACCESS_ONCE(idle->idle_count);
+ if (ACCESS_ONCE(idle->clock_idle_enter))
+ idle_count++;
+ } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ return sprintf(buf, "%llu\n", idle_count);
+}
+DEVICE_ATTR(idle_count, 0444, show_idle_count, NULL);
+
+static ssize_t show_idle_time(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
+ unsigned long long now, idle_time, idle_enter, idle_exit;
+ unsigned int sequence;
+
+ do {
+ now = get_tod_clock();
+ sequence = ACCESS_ONCE(idle->sequence);
+ idle_time = ACCESS_ONCE(idle->idle_time);
+ idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
+ idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
+ } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
+ return sprintf(buf, "%llu\n", idle_time >> 12);
+}
+DEVICE_ATTR(idle_time_us, 0444, show_idle_time, NULL);
+
+cputime64_t arch_cpu_idle_time(int cpu)
+{
+ struct s390_idle_data *idle = &per_cpu(s390_idle, cpu);
+ unsigned long long now, idle_enter, idle_exit;
+ unsigned int sequence;
+
+ do {
+ now = get_tod_clock();
+ sequence = ACCESS_ONCE(idle->sequence);
+ idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
+ idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
+ } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
+ return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
+}
+
+void arch_cpu_idle_enter(void)
+{
+ local_mcck_disable();
+}
+
+void arch_cpu_idle(void)
+{
+ if (!test_cpu_flag(CIF_MCCK_PENDING))
+ /* Halt the cpu and keep track of cpu time accounting. */
+ enabled_wait();
+ local_irq_enable();
+}
+
+void arch_cpu_idle_exit(void)
+{
+ local_mcck_enable();
+ if (test_cpu_flag(CIF_MCCK_PENDING))
+ s390_handle_mcck();
+}
+
+void arch_cpu_idle_dead(void)
+{
+ cpu_die();
+}
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 8eb82443cfbd..1b8a38ab7861 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -70,6 +70,7 @@ static const struct irq_class irqclass_sub_desc[NR_ARCH_IRQS] = {
{.irq = IRQEXT_CMS, .name = "CMS", .desc = "[EXT] CPU-Measurement: Sampling"},
{.irq = IRQEXT_CMC, .name = "CMC", .desc = "[EXT] CPU-Measurement: Counter"},
{.irq = IRQEXT_CMR, .name = "CMR", .desc = "[EXT] CPU-Measurement: RI"},
+ {.irq = IRQEXT_FTP, .name = "FTP", .desc = "[EXT] HMC FTP Service"},
{.irq = IRQIO_CIO, .name = "CIO", .desc = "[I/O] Common I/O Layer Interrupt"},
{.irq = IRQIO_QAI, .name = "QAI", .desc = "[I/O] QDIO Adapter Interrupt"},
{.irq = IRQIO_DAS, .name = "DAS", .desc = "[I/O] DASD"},
@@ -258,7 +259,7 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy)
ext_code = *(struct ext_code *) &regs->int_code;
if (ext_code.code != EXT_IRQ_CLK_COMP)
- __get_cpu_var(s390_idle).nohz_delay = 1;
+ set_cpu_flag(CIF_NOHZ_DELAY);
index = ext_hash(ext_code.code);
rcu_read_lock();
diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c
index bc71a7b95af5..27ae5433fe4d 100644
--- a/arch/s390/kernel/kprobes.c
+++ b/arch/s390/kernel/kprobes.c
@@ -58,161 +58,13 @@ struct kprobe_insn_cache kprobe_dmainsn_slots = {
.insn_size = MAX_INSN_SIZE,
};
-static int __kprobes is_prohibited_opcode(kprobe_opcode_t *insn)
-{
- if (!is_known_insn((unsigned char *)insn))
- return -EINVAL;
- switch (insn[0] >> 8) {
- case 0x0c: /* bassm */
- case 0x0b: /* bsm */
- case 0x83: /* diag */
- case 0x44: /* ex */
- case 0xac: /* stnsm */
- case 0xad: /* stosm */
- return -EINVAL;
- case 0xc6:
- switch (insn[0] & 0x0f) {
- case 0x00: /* exrl */
- return -EINVAL;
- }
- }
- switch (insn[0]) {
- case 0x0101: /* pr */
- case 0xb25a: /* bsa */
- case 0xb240: /* bakr */
- case 0xb258: /* bsg */
- case 0xb218: /* pc */
- case 0xb228: /* pt */
- case 0xb98d: /* epsw */
- return -EINVAL;
- }
- return 0;
-}
-
-static int __kprobes get_fixup_type(kprobe_opcode_t *insn)
-{
- /* default fixup method */
- int fixup = FIXUP_PSW_NORMAL;
-
- switch (insn[0] >> 8) {
- case 0x05: /* balr */
- case 0x0d: /* basr */
- fixup = FIXUP_RETURN_REGISTER;
- /* if r2 = 0, no branch will be taken */
- if ((insn[0] & 0x0f) == 0)
- fixup |= FIXUP_BRANCH_NOT_TAKEN;
- break;
- case 0x06: /* bctr */
- case 0x07: /* bcr */
- fixup = FIXUP_BRANCH_NOT_TAKEN;
- break;
- case 0x45: /* bal */
- case 0x4d: /* bas */
- fixup = FIXUP_RETURN_REGISTER;
- break;
- case 0x47: /* bc */
- case 0x46: /* bct */
- case 0x86: /* bxh */
- case 0x87: /* bxle */
- fixup = FIXUP_BRANCH_NOT_TAKEN;
- break;
- case 0x82: /* lpsw */
- fixup = FIXUP_NOT_REQUIRED;
- break;
- case 0xb2: /* lpswe */
- if ((insn[0] & 0xff) == 0xb2)
- fixup = FIXUP_NOT_REQUIRED;
- break;
- case 0xa7: /* bras */
- if ((insn[0] & 0x0f) == 0x05)
- fixup |= FIXUP_RETURN_REGISTER;
- break;
- case 0xc0:
- if ((insn[0] & 0x0f) == 0x05) /* brasl */
- fixup |= FIXUP_RETURN_REGISTER;
- break;
- case 0xeb:
- switch (insn[2] & 0xff) {
- case 0x44: /* bxhg */
- case 0x45: /* bxleg */
- fixup = FIXUP_BRANCH_NOT_TAKEN;
- break;
- }
- break;
- case 0xe3: /* bctg */
- if ((insn[2] & 0xff) == 0x46)
- fixup = FIXUP_BRANCH_NOT_TAKEN;
- break;
- case 0xec:
- switch (insn[2] & 0xff) {
- case 0xe5: /* clgrb */
- case 0xe6: /* cgrb */
- case 0xf6: /* crb */
- case 0xf7: /* clrb */
- case 0xfc: /* cgib */
- case 0xfd: /* cglib */
- case 0xfe: /* cib */
- case 0xff: /* clib */
- fixup = FIXUP_BRANCH_NOT_TAKEN;
- break;
- }
- break;
- }
- return fixup;
-}
-
-static int __kprobes is_insn_relative_long(kprobe_opcode_t *insn)
-{
- /* Check if we have a RIL-b or RIL-c format instruction which
- * we need to modify in order to avoid instruction emulation. */
- switch (insn[0] >> 8) {
- case 0xc0:
- if ((insn[0] & 0x0f) == 0x00) /* larl */
- return true;
- break;
- case 0xc4:
- switch (insn[0] & 0x0f) {
- case 0x02: /* llhrl */
- case 0x04: /* lghrl */
- case 0x05: /* lhrl */
- case 0x06: /* llghrl */
- case 0x07: /* sthrl */
- case 0x08: /* lgrl */
- case 0x0b: /* stgrl */
- case 0x0c: /* lgfrl */
- case 0x0d: /* lrl */
- case 0x0e: /* llgfrl */
- case 0x0f: /* strl */
- return true;
- }
- break;
- case 0xc6:
- switch (insn[0] & 0x0f) {
- case 0x02: /* pfdrl */
- case 0x04: /* cghrl */
- case 0x05: /* chrl */
- case 0x06: /* clghrl */
- case 0x07: /* clhrl */
- case 0x08: /* cgrl */
- case 0x0a: /* clgrl */
- case 0x0c: /* cgfrl */
- case 0x0d: /* crl */
- case 0x0e: /* clgfrl */
- case 0x0f: /* clrl */
- return true;
- }
- break;
- }
- return false;
-}
-
static void __kprobes copy_instruction(struct kprobe *p)
{
s64 disp, new_disp;
u64 addr, new_addr;
memcpy(p->ainsn.insn, p->addr, insn_length(p->opcode >> 8));
- if (!is_insn_relative_long(p->ainsn.insn))
+ if (!probe_is_insn_relative_long(p->ainsn.insn))
return;
/*
* For pc-relative instructions in RIL-b or RIL-c format patch the
@@ -276,7 +128,7 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p)
if ((unsigned long) p->addr & 0x01)
return -EINVAL;
/* Make sure the probe isn't going on a difficult instruction */
- if (is_prohibited_opcode(p->addr))
+ if (probe_is_prohibited_opcode(p->addr))
return -EINVAL;
if (s390_get_insn_slot(p))
return -ENOMEM;
@@ -605,7 +457,7 @@ static void __kprobes resume_execution(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
unsigned long ip = regs->psw.addr & PSW_ADDR_INSN;
- int fixup = get_fixup_type(p->ainsn.insn);
+ int fixup = probe_get_fixup_type(p->ainsn.insn);
if (fixup & FIXUP_PSW_NORMAL)
ip += (unsigned long) p->addr - (unsigned long) p->ainsn.insn;
@@ -789,11 +641,6 @@ void __kprobes jprobe_return(void)
asm volatile(".word 0x0002");
}
-static void __used __kprobes jprobe_return_end(void)
-{
- asm volatile("bcr 0,0");
-}
-
int __kprobes longjmp_break_handler(struct kprobe *p, struct pt_regs *regs)
{
struct kprobe_ctlblk *kcb = get_kprobe_ctlblk();
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index 719e27b2cf22..4685337fa7c6 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -25,6 +25,7 @@
#include <asm/elf.h>
#include <asm/asm-offsets.h>
#include <asm/os_info.h>
+#include <asm/switch_to.h>
typedef void (*relocate_kernel_t)(kimage_entry_t *, unsigned long);
@@ -43,7 +44,7 @@ static void add_elf_notes(int cpu)
memcpy((void *) (4608UL + sa->pref_reg), sa, sizeof(*sa));
ptr = (u64 *) per_cpu_ptr(crash_notes, cpu);
- ptr = fill_cpu_elf_notes(ptr, sa);
+ ptr = fill_cpu_elf_notes(ptr, sa, NULL);
memset(ptr, 0, sizeof(struct elf_note));
}
@@ -53,8 +54,11 @@ static void add_elf_notes(int cpu)
static void setup_regs(void)
{
unsigned long sa = S390_lowcore.prefixreg_save_area + SAVE_AREA_BASE;
+ struct _lowcore *lc;
int cpu, this_cpu;
+ /* Get lowcore pointer from store status of this CPU (absolute zero) */
+ lc = (struct _lowcore *)(unsigned long)S390_lowcore.prefixreg_save_area;
this_cpu = smp_find_processor_id(stap());
add_elf_notes(this_cpu);
for_each_online_cpu(cpu) {
@@ -64,6 +68,8 @@ static void setup_regs(void)
continue;
add_elf_notes(cpu);
}
+ if (MACHINE_HAS_VX)
+ save_vx_regs_safe((void *) lc->vector_save_area_addr);
/* Copy dump CPU store status info to absolute zero */
memcpy((void *) SAVE_AREA_BASE, (void *) sa, sizeof(struct save_area));
}
diff --git a/arch/s390/kernel/mcount.S b/arch/s390/kernel/mcount.S
index 433c6dbfa442..4300ea374826 100644
--- a/arch/s390/kernel/mcount.S
+++ b/arch/s390/kernel/mcount.S
@@ -8,62 +8,72 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/ftrace.h>
+#include <asm/ptrace.h>
.section .kprobes.text, "ax"
ENTRY(ftrace_stub)
br %r14
+#define STACK_FRAME_SIZE (STACK_FRAME_OVERHEAD + __PT_SIZE)
+#define STACK_PTREGS (STACK_FRAME_OVERHEAD)
+#define STACK_PTREGS_GPRS (STACK_PTREGS + __PT_GPRS)
+#define STACK_PTREGS_PSW (STACK_PTREGS + __PT_PSW)
+
ENTRY(_mcount)
-#ifdef CONFIG_DYNAMIC_FTRACE
br %r14
ENTRY(ftrace_caller)
+ .globl ftrace_regs_caller
+ .set ftrace_regs_caller,ftrace_caller
+ lgr %r1,%r15
+ aghi %r15,-STACK_FRAME_SIZE
+ stg %r1,__SF_BACKCHAIN(%r15)
+ stg %r1,(STACK_PTREGS_GPRS+15*8)(%r15)
+ stg %r0,(STACK_PTREGS_PSW+8)(%r15)
+ stmg %r2,%r14,(STACK_PTREGS_GPRS+2*8)(%r15)
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+ aghik %r2,%r0,-MCOUNT_INSN_SIZE
+ lgrl %r4,function_trace_op
+ lgrl %r1,ftrace_trace_function
+#else
+ lgr %r2,%r0
+ aghi %r2,-MCOUNT_INSN_SIZE
+ larl %r4,function_trace_op
+ lg %r4,0(%r4)
+ larl %r1,ftrace_trace_function
+ lg %r1,0(%r1)
#endif
- stm %r2,%r5,16(%r15)
- bras %r1,1f
-0: .long ftrace_trace_function
-1: st %r14,56(%r15)
- lr %r0,%r15
- ahi %r15,-96
- l %r3,100(%r15)
- la %r2,0(%r14)
- st %r0,__SF_BACKCHAIN(%r15)
- la %r3,0(%r3)
- ahi %r2,-MCOUNT_INSN_SIZE
- l %r14,0b-0b(%r1)
- l %r14,0(%r14)
- basr %r14,%r14
+ lgr %r3,%r14
+ la %r5,STACK_PTREGS(%r15)
+ basr %r14,%r1
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- l %r2,100(%r15)
- l %r3,152(%r15)
+# The j instruction gets runtime patched to a nop instruction.
+# See ftrace_enable_ftrace_graph_caller.
ENTRY(ftrace_graph_caller)
-# The bras instruction gets runtime patched to call prepare_ftrace_return.
-# See ftrace_enable_ftrace_graph_caller. The patched instruction is:
-# bras %r14,prepare_ftrace_return
- bras %r14,0f
-0: st %r2,100(%r15)
+ j ftrace_graph_caller_end
+ lg %r2,(STACK_PTREGS_GPRS+14*8)(%r15)
+ lg %r3,(STACK_PTREGS_PSW+8)(%r15)
+ brasl %r14,prepare_ftrace_return
+ stg %r2,(STACK_PTREGS_GPRS+14*8)(%r15)
+ftrace_graph_caller_end:
+ .globl ftrace_graph_caller_end
#endif
- ahi %r15,96
- l %r14,56(%r15)
- lm %r2,%r5,16(%r15)
- br %r14
+ lg %r1,(STACK_PTREGS_PSW+8)(%r15)
+ lmg %r2,%r15,(STACK_PTREGS_GPRS+2*8)(%r15)
+ br %r1
#ifdef CONFIG_FUNCTION_GRAPH_TRACER
ENTRY(return_to_handler)
- stm %r2,%r5,16(%r15)
- st %r14,56(%r15)
- lr %r0,%r15
- ahi %r15,-96
- st %r0,__SF_BACKCHAIN(%r15)
- bras %r1,0f
- .long ftrace_return_to_handler
-0: l %r2,0b-0b(%r1)
- basr %r14,%r2
- lr %r14,%r2
- ahi %r15,96
- lm %r2,%r5,16(%r15)
+ stmg %r2,%r5,32(%r15)
+ lgr %r1,%r15
+ aghi %r15,-STACK_FRAME_OVERHEAD
+ stg %r1,__SF_BACKCHAIN(%r15)
+ brasl %r14,ftrace_return_to_handler
+ aghi %r15,STACK_FRAME_OVERHEAD
+ lgr %r14,%r2
+ lmg %r2,%r5,32(%r15)
br %r14
#endif
diff --git a/arch/s390/kernel/mcount64.S b/arch/s390/kernel/mcount64.S
deleted file mode 100644
index c67a8bf0fd9a..000000000000
--- a/arch/s390/kernel/mcount64.S
+++ /dev/null
@@ -1,62 +0,0 @@
-/*
- * Copyright IBM Corp. 2008, 2009
- *
- * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com>,
- *
- */
-
-#include <linux/linkage.h>
-#include <asm/asm-offsets.h>
-#include <asm/ftrace.h>
-
- .section .kprobes.text, "ax"
-
-ENTRY(ftrace_stub)
- br %r14
-
-ENTRY(_mcount)
-#ifdef CONFIG_DYNAMIC_FTRACE
- br %r14
-
-ENTRY(ftrace_caller)
-#endif
- stmg %r2,%r5,32(%r15)
- stg %r14,112(%r15)
- lgr %r1,%r15
- aghi %r15,-160
- stg %r1,__SF_BACKCHAIN(%r15)
- lgr %r2,%r14
- lg %r3,168(%r15)
- aghi %r2,-MCOUNT_INSN_SIZE
- larl %r14,ftrace_trace_function
- lg %r14,0(%r14)
- basr %r14,%r14
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
- lg %r2,168(%r15)
- lg %r3,272(%r15)
-ENTRY(ftrace_graph_caller)
-# The bras instruction gets runtime patched to call prepare_ftrace_return.
-# See ftrace_enable_ftrace_graph_caller. The patched instruction is:
-# bras %r14,prepare_ftrace_return
- bras %r14,0f
-0: stg %r2,168(%r15)
-#endif
- aghi %r15,160
- lmg %r2,%r5,32(%r15)
- lg %r14,112(%r15)
- br %r14
-
-#ifdef CONFIG_FUNCTION_GRAPH_TRACER
-
-ENTRY(return_to_handler)
- stmg %r2,%r5,32(%r15)
- lgr %r1,%r15
- aghi %r15,-160
- stg %r1,__SF_BACKCHAIN(%r15)
- brasl %r14,ftrace_return_to_handler
- aghi %r15,160
- lgr %r14,%r2
- lmg %r2,%r5,32(%r15)
- br %r14
-
-#endif
diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index 210e1285f75a..db96b418160a 100644
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -20,6 +20,7 @@
#include <asm/cputime.h>
#include <asm/nmi.h>
#include <asm/crw.h>
+#include <asm/switch_to.h>
struct mcck_struct {
int kill_task;
@@ -163,6 +164,21 @@ static int notrace s390_revalidate_registers(struct mci *mci)
" ld 15,120(%0)\n"
: : "a" (fpt_save_area));
}
+
+#ifdef CONFIG_64BIT
+ /* Revalidate vector registers */
+ if (MACHINE_HAS_VX && current->thread.vxrs) {
+ if (!mci->vr) {
+ /*
+ * Vector registers can't be restored and therefore
+ * the process needs to be terminated.
+ */
+ kill_task = 1;
+ }
+ restore_vx_regs((__vector128 *)
+ S390_lowcore.vector_save_area_addr);
+ }
+#endif
/* Revalidate access registers */
asm volatile(
" lam 0,15,0(%0)"
diff --git a/arch/s390/kernel/pgm_check.S b/arch/s390/kernel/pgm_check.S
index 813ec7260878..f6f8886399f6 100644
--- a/arch/s390/kernel/pgm_check.S
+++ b/arch/s390/kernel/pgm_check.S
@@ -49,7 +49,7 @@ PGM_CHECK_DEFAULT /* 17 */
PGM_CHECK_64BIT(transaction_exception) /* 18 */
PGM_CHECK_DEFAULT /* 19 */
PGM_CHECK_DEFAULT /* 1a */
-PGM_CHECK_DEFAULT /* 1b */
+PGM_CHECK_64BIT(vector_exception) /* 1b */
PGM_CHECK(space_switch_exception) /* 1c */
PGM_CHECK(hfp_sqrt_exception) /* 1d */
PGM_CHECK_DEFAULT /* 1e */
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 93b9ca42e5c0..ed84cc224899 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -61,30 +61,6 @@ unsigned long thread_saved_pc(struct task_struct *tsk)
return sf->gprs[8];
}
-void arch_cpu_idle(void)
-{
- local_mcck_disable();
- if (test_cpu_flag(CIF_MCCK_PENDING)) {
- local_mcck_enable();
- local_irq_enable();
- return;
- }
- /* Halt the cpu and keep track of cpu time accounting. */
- vtime_stop_cpu();
- local_irq_enable();
-}
-
-void arch_cpu_idle_exit(void)
-{
- if (test_cpu_flag(CIF_MCCK_PENDING))
- s390_handle_mcck();
-}
-
-void arch_cpu_idle_dead(void)
-{
- cpu_die();
-}
-
extern void __kprobes kernel_thread_starter(void);
/*
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 24612029f450..edefead3b43a 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -23,7 +23,6 @@ static DEFINE_PER_CPU(struct cpuid, cpu_id);
*/
void cpu_init(void)
{
- struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
struct cpuid *id = &__get_cpu_var(cpu_id);
get_cpu_id(id);
@@ -31,7 +30,6 @@ void cpu_init(void)
current->active_mm = &init_mm;
BUG_ON(current->mm);
enter_lazy_tlb(&init_mm, current);
- memset(idle, 0, sizeof(*idle));
}
/*
@@ -41,7 +39,7 @@ static int show_cpuinfo(struct seq_file *m, void *v)
{
static const char *hwcap_str[] = {
"esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp",
- "edat", "etf3eh", "highgprs", "te"
+ "edat", "etf3eh", "highgprs", "te", "vx"
};
unsigned long n = (unsigned long) v - 1;
int i;
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index bebacad48305..f537e937a988 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -38,15 +38,6 @@
#define CREATE_TRACE_POINTS
#include <trace/events/syscalls.h>
-enum s390_regset {
- REGSET_GENERAL,
- REGSET_FP,
- REGSET_LAST_BREAK,
- REGSET_TDB,
- REGSET_SYSTEM_CALL,
- REGSET_GENERAL_EXTENDED,
-};
-
void update_cr_regs(struct task_struct *task)
{
struct pt_regs *regs = task_pt_regs(task);
@@ -55,27 +46,39 @@ void update_cr_regs(struct task_struct *task)
#ifdef CONFIG_64BIT
/* Take care of the enable/disable of transactional execution. */
- if (MACHINE_HAS_TE) {
+ if (MACHINE_HAS_TE || MACHINE_HAS_VX) {
unsigned long cr, cr_new;
__ctl_store(cr, 0, 0);
- /* Set or clear transaction execution TXC bit 8. */
- cr_new = cr | (1UL << 55);
- if (task->thread.per_flags & PER_FLAG_NO_TE)
- cr_new &= ~(1UL << 55);
+ cr_new = cr;
+ if (MACHINE_HAS_TE) {
+ /* Set or clear transaction execution TXC bit 8. */
+ cr_new |= (1UL << 55);
+ if (task->thread.per_flags & PER_FLAG_NO_TE)
+ cr_new &= ~(1UL << 55);
+ }
+ if (MACHINE_HAS_VX) {
+ /* Enable/disable of vector extension */
+ cr_new &= ~(1UL << 17);
+ if (task->thread.vxrs)
+ cr_new |= (1UL << 17);
+ }
if (cr_new != cr)
__ctl_load(cr_new, 0, 0);
- /* Set or clear transaction execution TDC bits 62 and 63. */
- __ctl_store(cr, 2, 2);
- cr_new = cr & ~3UL;
- if (task->thread.per_flags & PER_FLAG_TE_ABORT_RAND) {
- if (task->thread.per_flags & PER_FLAG_TE_ABORT_RAND_TEND)
- cr_new |= 1UL;
- else
- cr_new |= 2UL;
+ if (MACHINE_HAS_TE) {
+ /* Set/clear transaction execution TDC bits 62/63. */
+ __ctl_store(cr, 2, 2);
+ cr_new = cr & ~3UL;
+ if (task->thread.per_flags & PER_FLAG_TE_ABORT_RAND) {
+ if (task->thread.per_flags &
+ PER_FLAG_TE_ABORT_RAND_TEND)
+ cr_new |= 1UL;
+ else
+ cr_new |= 2UL;
+ }
+ if (cr_new != cr)
+ __ctl_load(cr_new, 2, 2);
}
- if (cr_new != cr)
- __ctl_load(cr_new, 2, 2);
}
#endif
/* Copy user specified PER registers */
@@ -84,7 +87,8 @@ void update_cr_regs(struct task_struct *task)
new.end = thread->per_user.end;
/* merge TIF_SINGLE_STEP into user specified PER registers. */
- if (test_tsk_thread_flag(task, TIF_SINGLE_STEP)) {
+ if (test_tsk_thread_flag(task, TIF_SINGLE_STEP) ||
+ test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP)) {
if (test_tsk_thread_flag(task, TIF_BLOCK_STEP))
new.control |= PER_EVENT_BRANCH;
else
@@ -93,6 +97,8 @@ void update_cr_regs(struct task_struct *task)
new.control |= PER_CONTROL_SUSPENSION;
new.control |= PER_EVENT_TRANSACTION_END;
#endif
+ if (test_tsk_thread_flag(task, TIF_UPROBE_SINGLESTEP))
+ new.control |= PER_EVENT_IFETCH;
new.start = 0;
new.end = PSW_ADDR_INSN;
}
@@ -923,7 +929,15 @@ static int s390_fpregs_get(struct task_struct *target,
save_fp_ctl(&target->thread.fp_regs.fpc);
save_fp_regs(target->thread.fp_regs.fprs);
}
+#ifdef CONFIG_64BIT
+ else if (target->thread.vxrs) {
+ int i;
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ target->thread.fp_regs.fprs[i] =
+ *(freg_t *)(target->thread.vxrs + i);
+ }
+#endif
return user_regset_copyout(&pos, &count, &kbuf, &ubuf,
&target->thread.fp_regs, 0, -1);
}
@@ -957,9 +971,20 @@ static int s390_fpregs_set(struct task_struct *target,
target->thread.fp_regs.fprs,
offsetof(s390_fp_regs, fprs), -1);
- if (rc == 0 && target == current) {
- restore_fp_ctl(&target->thread.fp_regs.fpc);
- restore_fp_regs(target->thread.fp_regs.fprs);
+ if (rc == 0) {
+ if (target == current) {
+ restore_fp_ctl(&target->thread.fp_regs.fpc);
+ restore_fp_regs(target->thread.fp_regs.fprs);
+ }
+#ifdef CONFIG_64BIT
+ else if (target->thread.vxrs) {
+ int i;
+
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ *(freg_t *)(target->thread.vxrs + i) =
+ target->thread.fp_regs.fprs[i];
+ }
+#endif
}
return rc;
@@ -1015,6 +1040,95 @@ static int s390_tdb_set(struct task_struct *target,
return 0;
}
+static int s390_vxrs_active(struct task_struct *target,
+ const struct user_regset *regset)
+{
+ return !!target->thread.vxrs;
+}
+
+static int s390_vxrs_low_get(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ void *kbuf, void __user *ubuf)
+{
+ __u64 vxrs[__NUM_VXRS_LOW];
+ int i;
+
+ if (target->thread.vxrs) {
+ if (target == current)
+ save_vx_regs(target->thread.vxrs);
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ vxrs[i] = *((__u64 *)(target->thread.vxrs + i) + 1);
+ } else
+ memset(vxrs, 0, sizeof(vxrs));
+ return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1);
+}
+
+static int s390_vxrs_low_set(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ const void *kbuf, const void __user *ubuf)
+{
+ __u64 vxrs[__NUM_VXRS_LOW];
+ int i, rc;
+
+ if (!target->thread.vxrs) {
+ rc = alloc_vector_registers(target);
+ if (rc)
+ return rc;
+ } else if (target == current)
+ save_vx_regs(target->thread.vxrs);
+
+ rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1);
+ if (rc == 0) {
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ *((__u64 *)(target->thread.vxrs + i) + 1) = vxrs[i];
+ if (target == current)
+ restore_vx_regs(target->thread.vxrs);
+ }
+
+ return rc;
+}
+
+static int s390_vxrs_high_get(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ void *kbuf, void __user *ubuf)
+{
+ __vector128 vxrs[__NUM_VXRS_HIGH];
+
+ if (target->thread.vxrs) {
+ if (target == current)
+ save_vx_regs(target->thread.vxrs);
+ memcpy(vxrs, target->thread.vxrs + __NUM_VXRS_LOW,
+ sizeof(vxrs));
+ } else
+ memset(vxrs, 0, sizeof(vxrs));
+ return user_regset_copyout(&pos, &count, &kbuf, &ubuf, vxrs, 0, -1);
+}
+
+static int s390_vxrs_high_set(struct task_struct *target,
+ const struct user_regset *regset,
+ unsigned int pos, unsigned int count,
+ const void *kbuf, const void __user *ubuf)
+{
+ int rc;
+
+ if (!target->thread.vxrs) {
+ rc = alloc_vector_registers(target);
+ if (rc)
+ return rc;
+ } else if (target == current)
+ save_vx_regs(target->thread.vxrs);
+
+ rc = user_regset_copyin(&pos, &count, &kbuf, &ubuf,
+ target->thread.vxrs + __NUM_VXRS_LOW, 0, -1);
+ if (rc == 0 && target == current)
+ restore_vx_regs(target->thread.vxrs);
+
+ return rc;
+}
+
#endif
static int s390_system_call_get(struct task_struct *target,
@@ -1038,7 +1152,7 @@ static int s390_system_call_set(struct task_struct *target,
}
static const struct user_regset s390_regsets[] = {
- [REGSET_GENERAL] = {
+ {
.core_note_type = NT_PRSTATUS,
.n = sizeof(s390_regs) / sizeof(long),
.size = sizeof(long),
@@ -1046,7 +1160,7 @@ static const struct user_regset s390_regsets[] = {
.get = s390_regs_get,
.set = s390_regs_set,
},
- [REGSET_FP] = {
+ {
.core_note_type = NT_PRFPREG,
.n = sizeof(s390_fp_regs) / sizeof(long),
.size = sizeof(long),
@@ -1054,8 +1168,16 @@ static const struct user_regset s390_regsets[] = {
.get = s390_fpregs_get,
.set = s390_fpregs_set,
},
+ {
+ .core_note_type = NT_S390_SYSTEM_CALL,
+ .n = 1,
+ .size = sizeof(unsigned int),
+ .align = sizeof(unsigned int),
+ .get = s390_system_call_get,
+ .set = s390_system_call_set,
+ },
#ifdef CONFIG_64BIT
- [REGSET_LAST_BREAK] = {
+ {
.core_note_type = NT_S390_LAST_BREAK,
.n = 1,
.size = sizeof(long),
@@ -1063,7 +1185,7 @@ static const struct user_regset s390_regsets[] = {
.get = s390_last_break_get,
.set = s390_last_break_set,
},
- [REGSET_TDB] = {
+ {
.core_note_type = NT_S390_TDB,
.n = 1,
.size = 256,
@@ -1071,15 +1193,25 @@ static const struct user_regset s390_regsets[] = {
.get = s390_tdb_get,
.set = s390_tdb_set,
},
-#endif
- [REGSET_SYSTEM_CALL] = {
- .core_note_type = NT_S390_SYSTEM_CALL,
- .n = 1,
- .size = sizeof(unsigned int),
- .align = sizeof(unsigned int),
- .get = s390_system_call_get,
- .set = s390_system_call_set,
+ {
+ .core_note_type = NT_S390_VXRS_LOW,
+ .n = __NUM_VXRS_LOW,
+ .size = sizeof(__u64),
+ .align = sizeof(__u64),
+ .active = s390_vxrs_active,
+ .get = s390_vxrs_low_get,
+ .set = s390_vxrs_low_set,
},
+ {
+ .core_note_type = NT_S390_VXRS_HIGH,
+ .n = __NUM_VXRS_HIGH,
+ .size = sizeof(__vector128),
+ .align = sizeof(__vector128),
+ .active = s390_vxrs_active,
+ .get = s390_vxrs_high_get,
+ .set = s390_vxrs_high_set,
+ },
+#endif
};
static const struct user_regset_view user_s390_view = {
@@ -1244,7 +1376,7 @@ static int s390_compat_last_break_set(struct task_struct *target,
}
static const struct user_regset s390_compat_regsets[] = {
- [REGSET_GENERAL] = {
+ {
.core_note_type = NT_PRSTATUS,
.n = sizeof(s390_compat_regs) / sizeof(compat_long_t),
.size = sizeof(compat_long_t),
@@ -1252,7 +1384,7 @@ static const struct user_regset s390_compat_regsets[] = {
.get = s390_compat_regs_get,
.set = s390_compat_regs_set,
},
- [REGSET_FP] = {
+ {
.core_note_type = NT_PRFPREG,
.n = sizeof(s390_fp_regs) / sizeof(compat_long_t),
.size = sizeof(compat_long_t),
@@ -1260,7 +1392,15 @@ static const struct user_regset s390_compat_regsets[] = {
.get = s390_fpregs_get,
.set = s390_fpregs_set,
},
- [REGSET_LAST_BREAK] = {
+ {
+ .core_note_type = NT_S390_SYSTEM_CALL,
+ .n = 1,
+ .size = sizeof(compat_uint_t),
+ .align = sizeof(compat_uint_t),
+ .get = s390_system_call_get,
+ .set = s390_system_call_set,
+ },
+ {
.core_note_type = NT_S390_LAST_BREAK,
.n = 1,
.size = sizeof(long),
@@ -1268,7 +1408,7 @@ static const struct user_regset s390_compat_regsets[] = {
.get = s390_compat_last_break_get,
.set = s390_compat_last_break_set,
},
- [REGSET_TDB] = {
+ {
.core_note_type = NT_S390_TDB,
.n = 1,
.size = 256,
@@ -1276,15 +1416,25 @@ static const struct user_regset s390_compat_regsets[] = {
.get = s390_tdb_get,
.set = s390_tdb_set,
},
- [REGSET_SYSTEM_CALL] = {
- .core_note_type = NT_S390_SYSTEM_CALL,
- .n = 1,
- .size = sizeof(compat_uint_t),
- .align = sizeof(compat_uint_t),
- .get = s390_system_call_get,
- .set = s390_system_call_set,
+ {
+ .core_note_type = NT_S390_VXRS_LOW,
+ .n = __NUM_VXRS_LOW,
+ .size = sizeof(__u64),
+ .align = sizeof(__u64),
+ .active = s390_vxrs_active,
+ .get = s390_vxrs_low_get,
+ .set = s390_vxrs_low_set,
+ },
+ {
+ .core_note_type = NT_S390_VXRS_HIGH,
+ .n = __NUM_VXRS_HIGH,
+ .size = sizeof(__vector128),
+ .align = sizeof(__vector128),
+ .active = s390_vxrs_active,
+ .get = s390_vxrs_high_get,
+ .set = s390_vxrs_high_set,
},
- [REGSET_GENERAL_EXTENDED] = {
+ {
.core_note_type = NT_S390_HIGH_GPRS,
.n = sizeof(s390_compat_regs_high) / sizeof(compat_long_t),
.size = sizeof(compat_long_t),
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 82bc113e8c1d..e80d9ff9a56d 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -343,6 +343,9 @@ static void __init setup_lowcore(void)
__ctl_set_bit(14, 29);
}
#else
+ if (MACHINE_HAS_VX)
+ lc->vector_save_area_addr =
+ (unsigned long) &lc->vector_save_area;
lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];
#endif
lc->sync_enter_timer = S390_lowcore.sync_enter_timer;
@@ -452,8 +455,8 @@ static void __init setup_memory_end(void)
#ifdef CONFIG_64BIT
vmalloc_size = VMALLOC_END ?: (128UL << 30) - MODULES_LEN;
tmp = (memory_end ?: max_physmem_end) / PAGE_SIZE;
- tmp = tmp * (sizeof(struct page) + PAGE_SIZE) + vmalloc_size;
- if (tmp <= (1UL << 42))
+ tmp = tmp * (sizeof(struct page) + PAGE_SIZE);
+ if (tmp + vmalloc_size + MODULES_LEN <= (1UL << 42))
vmax = 1UL << 42; /* 3-level kernel page table */
else
vmax = 1UL << 53; /* 4-level kernel page table */
@@ -765,6 +768,12 @@ static void __init setup_hwcaps(void)
*/
if (test_facility(50) && test_facility(73))
elf_hwcap |= HWCAP_S390_TE;
+
+ /*
+ * Vector extension HWCAP_S390_VXRS is bit 11.
+ */
+ if (test_facility(129))
+ elf_hwcap |= HWCAP_S390_VXRS;
#endif
get_cpu_id(&cpu_id);
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index 469c4c6d9182..0c1a0ff0a558 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -31,30 +31,117 @@
#include <asm/switch_to.h>
#include "entry.h"
-typedef struct
+/*
+ * Layout of an old-style signal-frame:
+ * -----------------------------------------
+ * | save area (_SIGNAL_FRAMESIZE) |
+ * -----------------------------------------
+ * | struct sigcontext |
+ * | oldmask |
+ * | _sigregs * |
+ * -----------------------------------------
+ * | _sigregs with |
+ * | _s390_regs_common |
+ * | _s390_fp_regs |
+ * -----------------------------------------
+ * | int signo |
+ * -----------------------------------------
+ * | _sigregs_ext with |
+ * | gprs_high 64 byte (opt) |
+ * | vxrs_low 128 byte (opt) |
+ * | vxrs_high 256 byte (opt) |
+ * | reserved 128 byte (opt) |
+ * -----------------------------------------
+ * | __u16 svc_insn |
+ * -----------------------------------------
+ * The svc_insn entry with the sigreturn system call opcode does not
+ * have a fixed position and moves if gprs_high or vxrs exist.
+ * Future extensions will be added to _sigregs_ext.
+ */
+struct sigframe
{
__u8 callee_used_stack[__SIGNAL_FRAMESIZE];
struct sigcontext sc;
_sigregs sregs;
int signo;
- __u8 retcode[S390_SYSCALL_SIZE];
-} sigframe;
+ _sigregs_ext sregs_ext;
+ __u16 svc_insn; /* Offset of svc_insn is NOT fixed! */
+};
-typedef struct
+/*
+ * Layout of an rt signal-frame:
+ * -----------------------------------------
+ * | save area (_SIGNAL_FRAMESIZE) |
+ * -----------------------------------------
+ * | svc __NR_rt_sigreturn 2 byte |
+ * -----------------------------------------
+ * | struct siginfo |
+ * -----------------------------------------
+ * | struct ucontext_extended with |
+ * | unsigned long uc_flags |
+ * | struct ucontext *uc_link |
+ * | stack_t uc_stack |
+ * | _sigregs uc_mcontext with |
+ * | _s390_regs_common |
+ * | _s390_fp_regs |
+ * | sigset_t uc_sigmask |
+ * | _sigregs_ext uc_mcontext_ext |
+ * | gprs_high 64 byte (opt) |
+ * | vxrs_low 128 byte (opt) |
+ * | vxrs_high 256 byte (opt)|
+ * | reserved 128 byte (opt) |
+ * -----------------------------------------
+ * Future extensions will be added to _sigregs_ext.
+ */
+struct rt_sigframe
{
__u8 callee_used_stack[__SIGNAL_FRAMESIZE];
- __u8 retcode[S390_SYSCALL_SIZE];
+ __u16 svc_insn;
struct siginfo info;
- struct ucontext uc;
-} rt_sigframe;
+ struct ucontext_extended uc;
+};
+
+/* Store registers needed to create the signal frame */
+static void store_sigregs(void)
+{
+ save_access_regs(current->thread.acrs);
+ save_fp_ctl(&current->thread.fp_regs.fpc);
+#ifdef CONFIG_64BIT
+ if (current->thread.vxrs) {
+ int i;
+
+ save_vx_regs(current->thread.vxrs);
+ for (i = 0; i < __NUM_FPRS; i++)
+ current->thread.fp_regs.fprs[i] =
+ *(freg_t *)(current->thread.vxrs + i);
+ } else
+#endif
+ save_fp_regs(current->thread.fp_regs.fprs);
+}
+
+/* Load registers after signal return */
+static void load_sigregs(void)
+{
+ restore_access_regs(current->thread.acrs);
+ /* restore_fp_ctl is done in restore_sigregs */
+#ifdef CONFIG_64BIT
+ if (current->thread.vxrs) {
+ int i;
+
+ for (i = 0; i < __NUM_FPRS; i++)
+ *(freg_t *)(current->thread.vxrs + i) =
+ current->thread.fp_regs.fprs[i];
+ restore_vx_regs(current->thread.vxrs);
+ } else
+#endif
+ restore_fp_regs(current->thread.fp_regs.fprs);
+}
/* Returns non-zero on fault. */
static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
{
_sigregs user_sregs;
- save_access_regs(current->thread.acrs);
-
/* Copy a 'clean' PSW mask to the user to avoid leaking
information about whether PER is currently on. */
user_sregs.regs.psw.mask = PSW_USER_BITS |
@@ -63,12 +150,6 @@ static int save_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
memcpy(&user_sregs.regs.gprs, &regs->gprs, sizeof(sregs->regs.gprs));
memcpy(&user_sregs.regs.acrs, current->thread.acrs,
sizeof(user_sregs.regs.acrs));
- /*
- * We have to store the fp registers to current->thread.fp_regs
- * to merge them with the emulated registers.
- */
- save_fp_ctl(&current->thread.fp_regs.fpc);
- save_fp_regs(current->thread.fp_regs.fprs);
memcpy(&user_sregs.fpregs, &current->thread.fp_regs,
sizeof(user_sregs.fpregs));
if (__copy_to_user(sregs, &user_sregs, sizeof(_sigregs)))
@@ -107,20 +188,64 @@ static int restore_sigregs(struct pt_regs *regs, _sigregs __user *sregs)
memcpy(&regs->gprs, &user_sregs.regs.gprs, sizeof(sregs->regs.gprs));
memcpy(&current->thread.acrs, &user_sregs.regs.acrs,
sizeof(current->thread.acrs));
- restore_access_regs(current->thread.acrs);
memcpy(&current->thread.fp_regs, &user_sregs.fpregs,
sizeof(current->thread.fp_regs));
- restore_fp_regs(current->thread.fp_regs.fprs);
clear_pt_regs_flag(regs, PIF_SYSCALL); /* No longer in a system call */
return 0;
}
+/* Returns non-zero on fault. */
+static int save_sigregs_ext(struct pt_regs *regs,
+ _sigregs_ext __user *sregs_ext)
+{
+#ifdef CONFIG_64BIT
+ __u64 vxrs[__NUM_VXRS_LOW];
+ int i;
+
+ /* Save vector registers to signal stack */
+ if (current->thread.vxrs) {
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ vxrs[i] = *((__u64 *)(current->thread.vxrs + i) + 1);
+ if (__copy_to_user(&sregs_ext->vxrs_low, vxrs,
+ sizeof(sregs_ext->vxrs_low)) ||
+ __copy_to_user(&sregs_ext->vxrs_high,
+ current->thread.vxrs + __NUM_VXRS_LOW,
+ sizeof(sregs_ext->vxrs_high)))
+ return -EFAULT;
+ }
+#endif
+ return 0;
+}
+
+static int restore_sigregs_ext(struct pt_regs *regs,
+ _sigregs_ext __user *sregs_ext)
+{
+#ifdef CONFIG_64BIT
+ __u64 vxrs[__NUM_VXRS_LOW];
+ int i;
+
+ /* Restore vector registers from signal stack */
+ if (current->thread.vxrs) {
+ if (__copy_from_user(vxrs, &sregs_ext->vxrs_low,
+ sizeof(sregs_ext->vxrs_low)) ||
+ __copy_from_user(current->thread.vxrs + __NUM_VXRS_LOW,
+ &sregs_ext->vxrs_high,
+ sizeof(sregs_ext->vxrs_high)))
+ return -EFAULT;
+ for (i = 0; i < __NUM_VXRS_LOW; i++)
+ *((__u64 *)(current->thread.vxrs + i) + 1) = vxrs[i];
+ }
+#endif
+ return 0;
+}
+
SYSCALL_DEFINE0(sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
- sigframe __user *frame = (sigframe __user *)regs->gprs[15];
+ struct sigframe __user *frame =
+ (struct sigframe __user *) regs->gprs[15];
sigset_t set;
if (__copy_from_user(&set.sig, &frame->sc.oldmask, _SIGMASK_COPY_SIZE))
@@ -128,6 +253,9 @@ SYSCALL_DEFINE0(sigreturn)
set_current_blocked(&set);
if (restore_sigregs(regs, &frame->sregs))
goto badframe;
+ if (restore_sigregs_ext(regs, &frame->sregs_ext))
+ goto badframe;
+ load_sigregs();
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
@@ -137,16 +265,20 @@ badframe:
SYSCALL_DEFINE0(rt_sigreturn)
{
struct pt_regs *regs = task_pt_regs(current);
- rt_sigframe __user *frame = (rt_sigframe __user *)regs->gprs[15];
+ struct rt_sigframe __user *frame =
+ (struct rt_sigframe __user *)regs->gprs[15];
sigset_t set;
if (__copy_from_user(&set.sig, &frame->uc.uc_sigmask, sizeof(set)))
goto badframe;
set_current_blocked(&set);
+ if (restore_altstack(&frame->uc.uc_stack))
+ goto badframe;
if (restore_sigregs(regs, &frame->uc.uc_mcontext))
goto badframe;
- if (restore_altstack(&frame->uc.uc_stack))
+ if (restore_sigregs_ext(regs, &frame->uc.uc_mcontext_ext))
goto badframe;
+ load_sigregs();
return regs->gprs[2];
badframe:
force_sig(SIGSEGV, current);
@@ -154,11 +286,6 @@ badframe:
}
/*
- * Set up a signal frame.
- */
-
-
-/*
* Determine which stack to use..
*/
static inline void __user *
@@ -195,39 +322,63 @@ static inline int map_signal(int sig)
static int setup_frame(int sig, struct k_sigaction *ka,
sigset_t *set, struct pt_regs * regs)
{
- sigframe __user *frame;
-
- frame = get_sigframe(ka, regs, sizeof(sigframe));
+ struct sigframe __user *frame;
+ struct sigcontext sc;
+ unsigned long restorer;
+ size_t frame_size;
+ /*
+ * gprs_high are only present for a 31-bit task running on
+ * a 64-bit kernel (see compat_signal.c) but the space for
+ * gprs_high need to be allocated if vector registers are
+ * included in the signal frame on a 31-bit system.
+ */
+ frame_size = sizeof(*frame) - sizeof(frame->sregs_ext);
+ if (MACHINE_HAS_VX)
+ frame_size += sizeof(frame->sregs_ext);
+ frame = get_sigframe(ka, regs, frame_size);
if (frame == (void __user *) -1UL)
return -EFAULT;
- if (__copy_to_user(&frame->sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE))
+ /* Set up backchain. */
+ if (__put_user(regs->gprs[15], (addr_t __user *) frame))
return -EFAULT;
+ /* Create struct sigcontext on the signal stack */
+ memcpy(&sc.oldmask, &set->sig, _SIGMASK_COPY_SIZE);
+ sc.sregs = (_sigregs __user __force *) &frame->sregs;
+ if (__copy_to_user(&frame->sc, &sc, sizeof(frame->sc)))
+ return -EFAULT;
+
+ /* Store registers needed to create the signal frame */
+ store_sigregs();
+
+ /* Create _sigregs on the signal stack */
if (save_sigregs(regs, &frame->sregs))
return -EFAULT;
- if (__put_user(&frame->sregs, &frame->sc.sregs))
+
+ /* Place signal number on stack to allow backtrace from handler. */
+ if (__put_user(regs->gprs[2], (int __user *) &frame->signo))
+ return -EFAULT;
+
+ /* Create _sigregs_ext on the signal stack */
+ if (save_sigregs_ext(regs, &frame->sregs_ext))
return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ka->sa.sa_flags & SA_RESTORER) {
- regs->gprs[14] = (unsigned long)
- ka->sa.sa_restorer | PSW_ADDR_AMODE;
+ restorer = (unsigned long) ka->sa.sa_restorer | PSW_ADDR_AMODE;
} else {
- regs->gprs[14] = (unsigned long)
- frame->retcode | PSW_ADDR_AMODE;
- if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn,
- (u16 __user *)(frame->retcode)))
+ /* Signal frame without vector registers are short ! */
+ __u16 __user *svc = (void *) frame + frame_size - 2;
+ if (__put_user(S390_SYSCALL_OPCODE | __NR_sigreturn, svc))
return -EFAULT;
+ restorer = (unsigned long) svc | PSW_ADDR_AMODE;
}
- /* Set up backchain. */
- if (__put_user(regs->gprs[15], (addr_t __user *) frame))
- return -EFAULT;
-
/* Set up registers for signal handler */
+ regs->gprs[14] = restorer;
regs->gprs[15] = (unsigned long) frame;
/* Force default amode and default user address space control. */
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
@@ -247,54 +398,69 @@ static int setup_frame(int sig, struct k_sigaction *ka,
regs->gprs[5] = regs->int_parm_long;
regs->gprs[6] = task_thread_info(current)->last_break;
}
-
- /* Place signal number on stack to allow backtrace from handler. */
- if (__put_user(regs->gprs[2], (int __user *) &frame->signo))
- return -EFAULT;
return 0;
}
static int setup_rt_frame(struct ksignal *ksig, sigset_t *set,
struct pt_regs *regs)
{
- int err = 0;
- rt_sigframe __user *frame;
-
- frame = get_sigframe(&ksig->ka, regs, sizeof(rt_sigframe));
+ struct rt_sigframe __user *frame;
+ unsigned long uc_flags, restorer;
+ size_t frame_size;
+ frame_size = sizeof(struct rt_sigframe) - sizeof(_sigregs_ext);
+ /*
+ * gprs_high are only present for a 31-bit task running on
+ * a 64-bit kernel (see compat_signal.c) but the space for
+ * gprs_high need to be allocated if vector registers are
+ * included in the signal frame on a 31-bit system.
+ */
+ uc_flags = 0;
+#ifdef CONFIG_64BIT
+ if (MACHINE_HAS_VX) {
+ frame_size += sizeof(_sigregs_ext);
+ if (current->thread.vxrs)
+ uc_flags |= UC_VXRS;
+ }
+#endif
+ frame = get_sigframe(&ksig->ka, regs, frame_size);
if (frame == (void __user *) -1UL)
return -EFAULT;
- if (copy_siginfo_to_user(&frame->info, &ksig->info))
- return -EFAULT;
-
- /* Create the ucontext. */
- err |= __put_user(0, &frame->uc.uc_flags);
- err |= __put_user(NULL, &frame->uc.uc_link);
- err |= __save_altstack(&frame->uc.uc_stack, regs->gprs[15]);
- err |= save_sigregs(regs, &frame->uc.uc_mcontext);
- err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
- if (err)
+ /* Set up backchain. */
+ if (__put_user(regs->gprs[15], (addr_t __user *) frame))
return -EFAULT;
/* Set up to return from userspace. If provided, use a stub
already in userspace. */
if (ksig->ka.sa.sa_flags & SA_RESTORER) {
- regs->gprs[14] = (unsigned long)
+ restorer = (unsigned long)
ksig->ka.sa.sa_restorer | PSW_ADDR_AMODE;
} else {
- regs->gprs[14] = (unsigned long)
- frame->retcode | PSW_ADDR_AMODE;
- if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn,
- (u16 __user *)(frame->retcode)))
+ __u16 __user *svc = &frame->svc_insn;
+ if (__put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, svc))
return -EFAULT;
+ restorer = (unsigned long) svc | PSW_ADDR_AMODE;
}
- /* Set up backchain. */
- if (__put_user(regs->gprs[15], (addr_t __user *) frame))
+ /* Create siginfo on the signal stack */
+ if (copy_siginfo_to_user(&frame->info, &ksig->info))
+ return -EFAULT;
+
+ /* Store registers needed to create the signal frame */
+ store_sigregs();
+
+ /* Create ucontext on the signal stack. */
+ if (__put_user(uc_flags, &frame->uc.uc_flags) ||
+ __put_user(NULL, &frame->uc.uc_link) ||
+ __save_altstack(&frame->uc.uc_stack, regs->gprs[15]) ||
+ save_sigregs(regs, &frame->uc.uc_mcontext) ||
+ __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)) ||
+ save_sigregs_ext(regs, &frame->uc.uc_mcontext_ext))
return -EFAULT;
/* Set up registers for signal handler */
+ regs->gprs[14] = restorer;
regs->gprs[15] = (unsigned long) frame;
/* Force default amode and default user address space control. */
regs->psw.mask = PSW_MASK_EA | PSW_MASK_BA |
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 243c7e512600..6fd9e60101f1 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -45,6 +45,7 @@
#include <asm/debug.h>
#include <asm/os_info.h>
#include <asm/sigp.h>
+#include <asm/idle.h>
#include "entry.h"
enum {
@@ -82,7 +83,8 @@ DEFINE_MUTEX(smp_cpu_state_mutex);
/*
* Signal processor helper functions.
*/
-static inline int __pcpu_sigp_relax(u16 addr, u8 order, u32 parm, u32 *status)
+static inline int __pcpu_sigp_relax(u16 addr, u8 order, unsigned long parm,
+ u32 *status)
{
int cc;
@@ -178,6 +180,9 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
goto out;
}
#else
+ if (MACHINE_HAS_VX)
+ lc->vector_save_area_addr =
+ (unsigned long) &lc->vector_save_area;
if (vdso_alloc_per_cpu(lc))
goto out;
#endif
@@ -333,12 +338,6 @@ int smp_vcpu_scheduled(int cpu)
return pcpu_running(pcpu_devices + cpu);
}
-void smp_yield(void)
-{
- if (MACHINE_HAS_DIAG44)
- asm volatile("diag 0,0,0x44");
-}
-
void smp_yield_cpu(int cpu)
{
if (MACHINE_HAS_DIAG9C)
@@ -517,35 +516,53 @@ EXPORT_SYMBOL(smp_ctl_clear_bit);
static void __init smp_get_save_area(int cpu, u16 address)
{
void *lc = pcpu_devices[0].lowcore;
- struct save_area *save_area;
+ struct save_area_ext *sa_ext;
+ unsigned long vx_sa;
if (is_kdump_kernel())
return;
if (!OLDMEM_BASE && (address == boot_cpu_address ||
ipl_info.type != IPL_TYPE_FCP_DUMP))
return;
- save_area = dump_save_area_create(cpu);
- if (!save_area)
+ sa_ext = dump_save_area_create(cpu);
+ if (!sa_ext)
panic("could not allocate memory for save area\n");
if (address == boot_cpu_address) {
/* Copy the registers of the boot cpu. */
- copy_oldmem_page(1, (void *) save_area, sizeof(*save_area),
+ copy_oldmem_page(1, (void *) &sa_ext->sa, sizeof(sa_ext->sa),
SAVE_AREA_BASE - PAGE_SIZE, 0);
+ if (MACHINE_HAS_VX)
+ save_vx_regs_safe(sa_ext->vx_regs);
return;
}
/* Get the registers of a non-boot cpu. */
__pcpu_sigp_relax(address, SIGP_STOP_AND_STORE_STATUS, 0, NULL);
- memcpy_real(save_area, lc + SAVE_AREA_BASE, sizeof(*save_area));
+ memcpy_real(&sa_ext->sa, lc + SAVE_AREA_BASE, sizeof(sa_ext->sa));
+ if (!MACHINE_HAS_VX)
+ return;
+ /* Get the VX registers */
+ vx_sa = __get_free_page(GFP_KERNEL);
+ if (!vx_sa)
+ panic("could not allocate memory for VX save area\n");
+ __pcpu_sigp_relax(address, SIGP_STORE_ADDITIONAL_STATUS, vx_sa, NULL);
+ memcpy(sa_ext->vx_regs, (void *) vx_sa, sizeof(sa_ext->vx_regs));
+ free_page(vx_sa);
}
int smp_store_status(int cpu)
{
+ unsigned long vx_sa;
struct pcpu *pcpu;
pcpu = pcpu_devices + cpu;
if (__pcpu_sigp_relax(pcpu->address, SIGP_STOP_AND_STORE_STATUS,
0, NULL) != SIGP_CC_ORDER_CODE_ACCEPTED)
return -EIO;
+ if (!MACHINE_HAS_VX)
+ return 0;
+ vx_sa = __pa(pcpu->lowcore->vector_save_area_addr);
+ __pcpu_sigp_relax(pcpu->address, SIGP_STORE_ADDITIONAL_STATUS,
+ vx_sa, NULL);
return 0;
}
@@ -667,7 +684,7 @@ static void smp_start_secondary(void *cpuvoid)
cpu_init();
preempt_disable();
init_cpu_timer();
- init_cpu_vtimer();
+ vtime_init();
pfault_init();
notify_cpu_starting(smp_processor_id());
set_cpu_online(smp_processor_id(), true);
@@ -726,6 +743,7 @@ int __cpu_disable(void)
cregs[6] &= ~0xff000000UL; /* disable all I/O interrupts */
cregs[14] &= ~0x1f000000UL; /* disable most machine checks */
__ctl_load(cregs, 0, 15);
+ clear_cpu_flag(CIF_NOHZ_DELAY);
return 0;
}
@@ -898,42 +916,6 @@ static struct attribute_group cpu_common_attr_group = {
.attrs = cpu_common_attrs,
};
-static ssize_t show_idle_count(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
- unsigned long long idle_count;
- unsigned int sequence;
-
- do {
- sequence = ACCESS_ONCE(idle->sequence);
- idle_count = ACCESS_ONCE(idle->idle_count);
- if (ACCESS_ONCE(idle->clock_idle_enter))
- idle_count++;
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
- return sprintf(buf, "%llu\n", idle_count);
-}
-static DEVICE_ATTR(idle_count, 0444, show_idle_count, NULL);
-
-static ssize_t show_idle_time(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- struct s390_idle_data *idle = &per_cpu(s390_idle, dev->id);
- unsigned long long now, idle_time, idle_enter, idle_exit;
- unsigned int sequence;
-
- do {
- now = get_tod_clock();
- sequence = ACCESS_ONCE(idle->sequence);
- idle_time = ACCESS_ONCE(idle->idle_time);
- idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
- idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
- idle_time += idle_enter ? ((idle_exit ? : now) - idle_enter) : 0;
- return sprintf(buf, "%llu\n", idle_time >> 12);
-}
-static DEVICE_ATTR(idle_time_us, 0444, show_idle_time, NULL);
-
static struct attribute *cpu_online_attrs[] = {
&dev_attr_idle_count.attr,
&dev_attr_idle_time_us.attr,
diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c
index 4cef607f3711..69e980de0f62 100644
--- a/arch/s390/kernel/time.c
+++ b/arch/s390/kernel/time.c
@@ -232,6 +232,19 @@ void update_vsyscall(struct timekeeper *tk)
vdso_data->wtom_clock_nsec -= nsecps;
vdso_data->wtom_clock_sec++;
}
+
+ vdso_data->xtime_coarse_sec = tk->xtime_sec;
+ vdso_data->xtime_coarse_nsec =
+ (long)(tk->tkr.xtime_nsec >> tk->tkr.shift);
+ vdso_data->wtom_coarse_sec =
+ vdso_data->xtime_coarse_sec + tk->wall_to_monotonic.tv_sec;
+ vdso_data->wtom_coarse_nsec =
+ vdso_data->xtime_coarse_nsec + tk->wall_to_monotonic.tv_nsec;
+ while (vdso_data->wtom_coarse_nsec >= NSEC_PER_SEC) {
+ vdso_data->wtom_coarse_nsec -= NSEC_PER_SEC;
+ vdso_data->wtom_coarse_sec++;
+ }
+
vdso_data->tk_mult = tk->tkr.mult;
vdso_data->tk_shift = tk->tkr.shift;
smp_wmb();
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 355a16c55702..b93bed76ea94 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -464,15 +464,17 @@ static struct sched_domain_topology_level s390_topology[] = {
static int __init topology_init(void)
{
- if (!MACHINE_HAS_TOPOLOGY) {
+ if (MACHINE_HAS_TOPOLOGY)
+ set_topology_timer();
+ else
topology_update_polarization_simple();
- goto out;
- }
- set_topology_timer();
-out:
-
- set_sched_topology(s390_topology);
-
return device_create_file(cpu_subsys.dev_root, &dev_attr_dispatching);
}
device_initcall(topology_init);
+
+static int __init early_topology_init(void)
+{
+ set_sched_topology(s390_topology);
+ return 0;
+}
+early_initcall(early_topology_init);
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index c5762324d9ee..9ff5ecba26ab 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -18,6 +18,8 @@
#include <linux/ptrace.h>
#include <linux/sched.h>
#include <linux/mm.h>
+#include <linux/slab.h>
+#include <asm/switch_to.h>
#include "entry.h"
int show_unhandled_signals = 1;
@@ -58,15 +60,10 @@ int is_valid_bugaddr(unsigned long addr)
return 1;
}
-static void __kprobes do_trap(struct pt_regs *regs,
- int si_signo, int si_code, char *str)
+void do_report_trap(struct pt_regs *regs, int si_signo, int si_code, char *str)
{
siginfo_t info;
- if (notify_die(DIE_TRAP, str, regs, 0,
- regs->int_code, si_signo) == NOTIFY_STOP)
- return;
-
if (user_mode(regs)) {
info.si_signo = si_signo;
info.si_errno = 0;
@@ -90,6 +87,15 @@ static void __kprobes do_trap(struct pt_regs *regs,
}
}
+static void __kprobes do_trap(struct pt_regs *regs, int si_signo, int si_code,
+ char *str)
+{
+ if (notify_die(DIE_TRAP, str, regs, 0,
+ regs->int_code, si_signo) == NOTIFY_STOP)
+ return;
+ do_report_trap(regs, si_signo, si_code, str);
+}
+
void __kprobes do_per_trap(struct pt_regs *regs)
{
siginfo_t info;
@@ -178,6 +184,7 @@ void __kprobes illegal_op(struct pt_regs *regs)
siginfo_t info;
__u8 opcode[6];
__u16 __user *location;
+ int is_uprobe_insn = 0;
int signal = 0;
location = get_trap_ip(regs);
@@ -194,6 +201,10 @@ void __kprobes illegal_op(struct pt_regs *regs)
force_sig_info(SIGTRAP, &info, current);
} else
signal = SIGILL;
+#ifdef CONFIG_UPROBES
+ } else if (*((__u16 *) opcode) == UPROBE_SWBP_INSN) {
+ is_uprobe_insn = 1;
+#endif
#ifdef CONFIG_MATHEMU
} else if (opcode[0] == 0xb3) {
if (get_user(*((__u16 *) (opcode+2)), location+1))
@@ -219,11 +230,13 @@ void __kprobes illegal_op(struct pt_regs *regs)
#endif
} else
signal = SIGILL;
- } else {
- /*
- * If we get an illegal op in kernel mode, send it through the
- * kprobes notifier. If kprobes doesn't pick it up, SIGILL
- */
+ }
+ /*
+ * We got either an illegal op in kernel mode, or user space trapped
+ * on a uprobes illegal instruction. See if kprobes or uprobes picks
+ * it up. If not, SIGILL.
+ */
+ if (is_uprobe_insn || !user_mode(regs)) {
if (notify_die(DIE_BPT, "bpt", regs, 0,
3, SIGTRAP) != NOTIFY_STOP)
signal = SIGILL;
@@ -292,6 +305,74 @@ DO_ERROR_INFO(specification_exception, SIGILL, ILL_ILLOPN,
"specification exception");
#endif
+#ifdef CONFIG_64BIT
+int alloc_vector_registers(struct task_struct *tsk)
+{
+ __vector128 *vxrs;
+ int i;
+
+ /* Allocate vector register save area. */
+ vxrs = kzalloc(sizeof(__vector128) * __NUM_VXRS,
+ GFP_KERNEL|__GFP_REPEAT);
+ if (!vxrs)
+ return -ENOMEM;
+ preempt_disable();
+ if (tsk == current)
+ save_fp_regs(tsk->thread.fp_regs.fprs);
+ /* Copy the 16 floating point registers */
+ for (i = 0; i < 16; i++)
+ *(freg_t *) &vxrs[i] = tsk->thread.fp_regs.fprs[i];
+ tsk->thread.vxrs = vxrs;
+ if (tsk == current) {
+ __ctl_set_bit(0, 17);
+ restore_vx_regs(vxrs);
+ }
+ preempt_enable();
+ return 0;
+}
+
+void vector_exception(struct pt_regs *regs)
+{
+ int si_code, vic;
+
+ if (!MACHINE_HAS_VX) {
+ do_trap(regs, SIGILL, ILL_ILLOPN, "illegal operation");
+ return;
+ }
+
+ /* get vector interrupt code from fpc */
+ asm volatile("stfpc %0" : "=m" (current->thread.fp_regs.fpc));
+ vic = (current->thread.fp_regs.fpc & 0xf00) >> 8;
+ switch (vic) {
+ case 1: /* invalid vector operation */
+ si_code = FPE_FLTINV;
+ break;
+ case 2: /* division by zero */
+ si_code = FPE_FLTDIV;
+ break;
+ case 3: /* overflow */
+ si_code = FPE_FLTOVF;
+ break;
+ case 4: /* underflow */
+ si_code = FPE_FLTUND;
+ break;
+ case 5: /* inexact */
+ si_code = FPE_FLTRES;
+ break;
+ default: /* unknown cause */
+ si_code = 0;
+ }
+ do_trap(regs, SIGFPE, si_code, "vector exception");
+}
+
+static int __init disable_vector_extension(char *str)
+{
+ S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX;
+ return 1;
+}
+__setup("novx", disable_vector_extension);
+#endif
+
void data_exception(struct pt_regs *regs)
{
__u16 __user *location;
@@ -357,6 +438,18 @@ void data_exception(struct pt_regs *regs)
}
}
#endif
+#ifdef CONFIG_64BIT
+ /* Check for vector register enablement */
+ if (MACHINE_HAS_VX && !current->thread.vxrs &&
+ (current->thread.fp_regs.fpc & FPC_DXC_MASK) == 0xfe00) {
+ alloc_vector_registers(current);
+ /* Vector data exception is suppressing, rewind psw. */
+ regs->psw.addr = __rewind_psw(regs->psw, regs->int_code >> 16);
+ clear_pt_regs_flag(regs, PIF_PER_TRAP);
+ return;
+ }
+#endif
+
if (current->thread.fp_regs.fpc & FPC_DXC_MASK)
signal = SIGFPE;
else
diff --git a/arch/s390/kernel/uprobes.c b/arch/s390/kernel/uprobes.c
new file mode 100644
index 000000000000..956f4f7a591c
--- /dev/null
+++ b/arch/s390/kernel/uprobes.c
@@ -0,0 +1,332 @@
+/*
+ * User-space Probes (UProbes) for s390
+ *
+ * Copyright IBM Corp. 2014
+ * Author(s): Jan Willeke,
+ */
+
+#include <linux/kprobes.h>
+#include <linux/uaccess.h>
+#include <linux/uprobes.h>
+#include <linux/compat.h>
+#include <linux/kdebug.h>
+#include <asm/switch_to.h>
+#include <asm/facility.h>
+#include <asm/dis.h>
+#include "entry.h"
+
+#define UPROBE_TRAP_NR UINT_MAX
+
+int arch_uprobe_analyze_insn(struct arch_uprobe *auprobe, struct mm_struct *mm,
+ unsigned long addr)
+{
+ return probe_is_prohibited_opcode(auprobe->insn);
+}
+
+int arch_uprobe_pre_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ if (psw_bits(regs->psw).eaba == PSW_AMODE_24BIT)
+ return -EINVAL;
+ if (!is_compat_task() && psw_bits(regs->psw).eaba == PSW_AMODE_31BIT)
+ return -EINVAL;
+ clear_pt_regs_flag(regs, PIF_PER_TRAP);
+ auprobe->saved_per = psw_bits(regs->psw).r;
+ auprobe->saved_int_code = regs->int_code;
+ regs->int_code = UPROBE_TRAP_NR;
+ regs->psw.addr = current->utask->xol_vaddr;
+ set_tsk_thread_flag(current, TIF_UPROBE_SINGLESTEP);
+ update_cr_regs(current);
+ return 0;
+}
+
+bool arch_uprobe_xol_was_trapped(struct task_struct *tsk)
+{
+ struct pt_regs *regs = task_pt_regs(tsk);
+
+ if (regs->int_code != UPROBE_TRAP_NR)
+ return true;
+ return false;
+}
+
+int arch_uprobe_post_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ int fixup = probe_get_fixup_type(auprobe->insn);
+ struct uprobe_task *utask = current->utask;
+
+ clear_tsk_thread_flag(current, TIF_UPROBE_SINGLESTEP);
+ update_cr_regs(current);
+ psw_bits(regs->psw).r = auprobe->saved_per;
+ regs->int_code = auprobe->saved_int_code;
+
+ if (fixup & FIXUP_PSW_NORMAL)
+ regs->psw.addr += utask->vaddr - utask->xol_vaddr;
+ if (fixup & FIXUP_RETURN_REGISTER) {
+ int reg = (auprobe->insn[0] & 0xf0) >> 4;
+
+ regs->gprs[reg] += utask->vaddr - utask->xol_vaddr;
+ }
+ if (fixup & FIXUP_BRANCH_NOT_TAKEN) {
+ int ilen = insn_length(auprobe->insn[0] >> 8);
+
+ if (regs->psw.addr - utask->xol_vaddr == ilen)
+ regs->psw.addr = utask->vaddr + ilen;
+ }
+ /* If per tracing was active generate trap */
+ if (regs->psw.mask & PSW_MASK_PER)
+ do_per_trap(regs);
+ return 0;
+}
+
+int arch_uprobe_exception_notify(struct notifier_block *self, unsigned long val,
+ void *data)
+{
+ struct die_args *args = data;
+ struct pt_regs *regs = args->regs;
+
+ if (!user_mode(regs))
+ return NOTIFY_DONE;
+ if (regs->int_code & 0x200) /* Trap during transaction */
+ return NOTIFY_DONE;
+ switch (val) {
+ case DIE_BPT:
+ if (uprobe_pre_sstep_notifier(regs))
+ return NOTIFY_STOP;
+ break;
+ case DIE_SSTEP:
+ if (uprobe_post_sstep_notifier(regs))
+ return NOTIFY_STOP;
+ default:
+ break;
+ }
+ return NOTIFY_DONE;
+}
+
+void arch_uprobe_abort_xol(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ clear_thread_flag(TIF_UPROBE_SINGLESTEP);
+ regs->int_code = auprobe->saved_int_code;
+ regs->psw.addr = current->utask->vaddr;
+}
+
+unsigned long arch_uretprobe_hijack_return_addr(unsigned long trampoline,
+ struct pt_regs *regs)
+{
+ unsigned long orig;
+
+ orig = regs->gprs[14];
+ regs->gprs[14] = trampoline;
+ return orig;
+}
+
+/* Instruction Emulation */
+
+static void adjust_psw_addr(psw_t *psw, unsigned long len)
+{
+ psw->addr = __rewind_psw(*psw, -len);
+}
+
+#define EMU_ILLEGAL_OP 1
+#define EMU_SPECIFICATION 2
+#define EMU_ADDRESSING 3
+
+#define emu_load_ril(ptr, output) \
+({ \
+ unsigned int mask = sizeof(*(ptr)) - 1; \
+ __typeof__(*(ptr)) input; \
+ int __rc = 0; \
+ \
+ if (!test_facility(34)) \
+ __rc = EMU_ILLEGAL_OP; \
+ else if ((u64 __force)ptr & mask) \
+ __rc = EMU_SPECIFICATION; \
+ else if (get_user(input, ptr)) \
+ __rc = EMU_ADDRESSING; \
+ else \
+ *(output) = input; \
+ __rc; \
+})
+
+#define emu_store_ril(ptr, input) \
+({ \
+ unsigned int mask = sizeof(*(ptr)) - 1; \
+ int __rc = 0; \
+ \
+ if (!test_facility(34)) \
+ __rc = EMU_ILLEGAL_OP; \
+ else if ((u64 __force)ptr & mask) \
+ __rc = EMU_SPECIFICATION; \
+ else if (put_user(*(input), ptr)) \
+ __rc = EMU_ADDRESSING; \
+ __rc; \
+})
+
+#define emu_cmp_ril(regs, ptr, cmp) \
+({ \
+ unsigned int mask = sizeof(*(ptr)) - 1; \
+ __typeof__(*(ptr)) input; \
+ int __rc = 0; \
+ \
+ if (!test_facility(34)) \
+ __rc = EMU_ILLEGAL_OP; \
+ else if ((u64 __force)ptr & mask) \
+ __rc = EMU_SPECIFICATION; \
+ else if (get_user(input, ptr)) \
+ __rc = EMU_ADDRESSING; \
+ else if (input > *(cmp)) \
+ psw_bits((regs)->psw).cc = 1; \
+ else if (input < *(cmp)) \
+ psw_bits((regs)->psw).cc = 2; \
+ else \
+ psw_bits((regs)->psw).cc = 0; \
+ __rc; \
+})
+
+struct insn_ril {
+ u8 opc0;
+ u8 reg : 4;
+ u8 opc1 : 4;
+ s32 disp;
+} __packed;
+
+union split_register {
+ u64 u64;
+ u32 u32[2];
+ u16 u16[4];
+ s64 s64;
+ s32 s32[2];
+ s16 s16[4];
+};
+
+/*
+ * pc relative instructions are emulated, since parameters may not be
+ * accessible from the xol area due to range limitations.
+ */
+static void handle_insn_ril(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ union split_register *rx;
+ struct insn_ril *insn;
+ unsigned int ilen;
+ void *uptr;
+ int rc = 0;
+
+ insn = (struct insn_ril *) &auprobe->insn;
+ rx = (union split_register *) &regs->gprs[insn->reg];
+ uptr = (void *)(regs->psw.addr + (insn->disp * 2));
+ ilen = insn_length(insn->opc0);
+
+ switch (insn->opc0) {
+ case 0xc0:
+ switch (insn->opc1) {
+ case 0x00: /* larl */
+ rx->u64 = (unsigned long)uptr;
+ break;
+ }
+ break;
+ case 0xc4:
+ switch (insn->opc1) {
+ case 0x02: /* llhrl */
+ rc = emu_load_ril((u16 __user *)uptr, &rx->u32[1]);
+ break;
+ case 0x04: /* lghrl */
+ rc = emu_load_ril((s16 __user *)uptr, &rx->u64);
+ break;
+ case 0x05: /* lhrl */
+ rc = emu_load_ril((s16 __user *)uptr, &rx->u32[1]);
+ break;
+ case 0x06: /* llghrl */
+ rc = emu_load_ril((u16 __user *)uptr, &rx->u64);
+ break;
+ case 0x08: /* lgrl */
+ rc = emu_load_ril((u64 __user *)uptr, &rx->u64);
+ break;
+ case 0x0c: /* lgfrl */
+ rc = emu_load_ril((s32 __user *)uptr, &rx->u64);
+ break;
+ case 0x0d: /* lrl */
+ rc = emu_load_ril((u32 __user *)uptr, &rx->u32[1]);
+ break;
+ case 0x0e: /* llgfrl */
+ rc = emu_load_ril((u32 __user *)uptr, &rx->u64);
+ break;
+ case 0x07: /* sthrl */
+ rc = emu_store_ril((u16 __user *)uptr, &rx->u16[3]);
+ break;
+ case 0x0b: /* stgrl */
+ rc = emu_store_ril((u64 __user *)uptr, &rx->u64);
+ break;
+ case 0x0f: /* strl */
+ rc = emu_store_ril((u32 __user *)uptr, &rx->u32[1]);
+ break;
+ }
+ break;
+ case 0xc6:
+ switch (insn->opc1) {
+ case 0x02: /* pfdrl */
+ if (!test_facility(34))
+ rc = EMU_ILLEGAL_OP;
+ break;
+ case 0x04: /* cghrl */
+ rc = emu_cmp_ril(regs, (s16 __user *)uptr, &rx->s64);
+ break;
+ case 0x05: /* chrl */
+ rc = emu_cmp_ril(regs, (s16 __user *)uptr, &rx->s32[1]);
+ break;
+ case 0x06: /* clghrl */
+ rc = emu_cmp_ril(regs, (u16 __user *)uptr, &rx->u64);
+ break;
+ case 0x07: /* clhrl */
+ rc = emu_cmp_ril(regs, (u16 __user *)uptr, &rx->u32[1]);
+ break;
+ case 0x08: /* cgrl */
+ rc = emu_cmp_ril(regs, (s64 __user *)uptr, &rx->s64);
+ break;
+ case 0x0a: /* clgrl */
+ rc = emu_cmp_ril(regs, (u64 __user *)uptr, &rx->u64);
+ break;
+ case 0x0c: /* cgfrl */
+ rc = emu_cmp_ril(regs, (s32 __user *)uptr, &rx->s64);
+ break;
+ case 0x0d: /* crl */
+ rc = emu_cmp_ril(regs, (s32 __user *)uptr, &rx->s32[1]);
+ break;
+ case 0x0e: /* clgfrl */
+ rc = emu_cmp_ril(regs, (u32 __user *)uptr, &rx->u64);
+ break;
+ case 0x0f: /* clrl */
+ rc = emu_cmp_ril(regs, (u32 __user *)uptr, &rx->u32[1]);
+ break;
+ }
+ break;
+ }
+ adjust_psw_addr(&regs->psw, ilen);
+ switch (rc) {
+ case EMU_ILLEGAL_OP:
+ regs->int_code = ilen << 16 | 0x0001;
+ do_report_trap(regs, SIGILL, ILL_ILLOPC, NULL);
+ break;
+ case EMU_SPECIFICATION:
+ regs->int_code = ilen << 16 | 0x0006;
+ do_report_trap(regs, SIGILL, ILL_ILLOPC , NULL);
+ break;
+ case EMU_ADDRESSING:
+ regs->int_code = ilen << 16 | 0x0005;
+ do_report_trap(regs, SIGSEGV, SEGV_MAPERR, NULL);
+ break;
+ }
+}
+
+bool arch_uprobe_skip_sstep(struct arch_uprobe *auprobe, struct pt_regs *regs)
+{
+ if ((psw_bits(regs->psw).eaba == PSW_AMODE_24BIT) ||
+ ((psw_bits(regs->psw).eaba == PSW_AMODE_31BIT) &&
+ !is_compat_task())) {
+ regs->psw.addr = __rewind_psw(regs->psw, UPROBE_SWBP_INSN_SIZE);
+ do_report_trap(regs, SIGILL, ILL_ILLADR, NULL);
+ return true;
+ }
+ if (probe_is_insn_relative_long(auprobe->insn)) {
+ handle_insn_ril(auprobe, regs);
+ return true;
+ }
+ return false;
+}
diff --git a/arch/s390/kernel/vdso32/clock_getres.S b/arch/s390/kernel/vdso32/clock_getres.S
index 36aaa25d05da..eca3f001f081 100644
--- a/arch/s390/kernel/vdso32/clock_getres.S
+++ b/arch/s390/kernel/vdso32/clock_getres.S
@@ -19,14 +19,20 @@
.type __kernel_clock_getres,@function
__kernel_clock_getres:
.cfi_startproc
+ basr %r1,0
+ la %r1,4f-.(%r1)
chi %r2,__CLOCK_REALTIME
je 0f
chi %r2,__CLOCK_MONOTONIC
+ je 0f
+ la %r1,5f-4f(%r1)
+ chi %r2,__CLOCK_REALTIME_COARSE
+ je 0f
+ chi %r2,__CLOCK_MONOTONIC_COARSE
jne 3f
0: ltr %r3,%r3
jz 2f /* res == NULL */
- basr %r1,0
-1: l %r0,4f-1b(%r1)
+1: l %r0,0(%r1)
xc 0(4,%r3),0(%r3) /* set tp->tv_sec to zero */
st %r0,4(%r3) /* store tp->tv_usec */
2: lhi %r2,0
@@ -35,5 +41,6 @@ __kernel_clock_getres:
svc 0
br %r14
4: .long __CLOCK_REALTIME_RES
+5: .long __CLOCK_COARSE_RES
.cfi_endproc
.size __kernel_clock_getres,.-__kernel_clock_getres
diff --git a/arch/s390/kernel/vdso32/clock_gettime.S b/arch/s390/kernel/vdso32/clock_gettime.S
index 7cf18f8d4cb4..48c2206a3956 100644
--- a/arch/s390/kernel/vdso32/clock_gettime.S
+++ b/arch/s390/kernel/vdso32/clock_gettime.S
@@ -21,8 +21,12 @@ __kernel_clock_gettime:
.cfi_startproc
basr %r5,0
0: al %r5,21f-0b(%r5) /* get &_vdso_data */
+ chi %r2,__CLOCK_REALTIME_COARSE
+ je 10f
chi %r2,__CLOCK_REALTIME
je 11f
+ chi %r2,__CLOCK_MONOTONIC_COARSE
+ je 9f
chi %r2,__CLOCK_MONOTONIC
jne 19f
@@ -30,8 +34,8 @@ __kernel_clock_gettime:
1: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
tml %r4,0x0001 /* pending update ? loop */
jnz 1b
- stck 24(%r15) /* Store TOD clock */
- lm %r0,%r1,24(%r15)
+ stcke 24(%r15) /* Store TOD clock */
+ lm %r0,%r1,25(%r15)
s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,2f
@@ -68,12 +72,32 @@ __kernel_clock_gettime:
lhi %r2,0
br %r14
+ /* CLOCK_MONOTONIC_COARSE */
+9: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
+ tml %r4,0x0001 /* pending update ? loop */
+ jnz 9b
+ l %r2,__VDSO_WTOM_CRS_SEC+4(%r5)
+ l %r1,__VDSO_WTOM_CRS_NSEC+4(%r5)
+ cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
+ jne 9b
+ j 8b
+
+ /* CLOCK_REALTIME_COARSE */
+10: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
+ tml %r4,0x0001 /* pending update ? loop */
+ jnz 10b
+ l %r2,__VDSO_XTIME_CRS_SEC+4(%r5)
+ l %r1,__VDSO_XTIME_CRS_NSEC+4(%r5)
+ cl %r4,__VDSO_UPD_COUNT+4(%r5) /* check update counter */
+ jne 10b
+ j 17f
+
/* CLOCK_REALTIME */
11: l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
tml %r4,0x0001 /* pending update ? loop */
jnz 11b
- stck 24(%r15) /* Store TOD clock */
- lm %r0,%r1,24(%r15)
+ stcke 24(%r15) /* Store TOD clock */
+ lm %r0,%r1,25(%r15)
s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,12f
diff --git a/arch/s390/kernel/vdso32/gettimeofday.S b/arch/s390/kernel/vdso32/gettimeofday.S
index fd621a950f7c..60def5f562db 100644
--- a/arch/s390/kernel/vdso32/gettimeofday.S
+++ b/arch/s390/kernel/vdso32/gettimeofday.S
@@ -29,8 +29,8 @@ __kernel_gettimeofday:
l %r4,__VDSO_UPD_COUNT+4(%r5) /* load update counter */
tml %r4,0x0001 /* pending update ? loop */
jnz 1b
- stck 24(%r15) /* Store TOD clock */
- lm %r0,%r1,24(%r15)
+ stcke 24(%r15) /* Store TOD clock */
+ lm %r0,%r1,25(%r15)
s %r0,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
sl %r1,__VDSO_XTIME_STAMP+4(%r5)
brc 3,3f
diff --git a/arch/s390/kernel/vdso64/clock_getres.S b/arch/s390/kernel/vdso64/clock_getres.S
index 34deba7c7ed1..c8513deb8c66 100644
--- a/arch/s390/kernel/vdso64/clock_getres.S
+++ b/arch/s390/kernel/vdso64/clock_getres.S
@@ -19,6 +19,12 @@
.type __kernel_clock_getres,@function
__kernel_clock_getres:
.cfi_startproc
+ larl %r1,4f
+ cghi %r2,__CLOCK_REALTIME_COARSE
+ je 0f
+ cghi %r2,__CLOCK_MONOTONIC_COARSE
+ je 0f
+ larl %r1,3f
cghi %r2,__CLOCK_REALTIME
je 0f
cghi %r2,__CLOCK_MONOTONIC
@@ -32,7 +38,6 @@ __kernel_clock_getres:
jz 2f
0: ltgr %r3,%r3
jz 1f /* res == NULL */
- larl %r1,3f
lg %r0,0(%r1)
xc 0(8,%r3),0(%r3) /* set tp->tv_sec to zero */
stg %r0,8(%r3) /* store tp->tv_usec */
@@ -42,5 +47,6 @@ __kernel_clock_getres:
svc 0
br %r14
3: .quad __CLOCK_REALTIME_RES
+4: .quad __CLOCK_COARSE_RES
.cfi_endproc
.size __kernel_clock_getres,.-__kernel_clock_getres
diff --git a/arch/s390/kernel/vdso64/clock_gettime.S b/arch/s390/kernel/vdso64/clock_gettime.S
index 3f34e09db5f4..9d9761f8e110 100644
--- a/arch/s390/kernel/vdso64/clock_gettime.S
+++ b/arch/s390/kernel/vdso64/clock_gettime.S
@@ -20,12 +20,16 @@
__kernel_clock_gettime:
.cfi_startproc
larl %r5,_vdso_data
+ cghi %r2,__CLOCK_REALTIME_COARSE
+ je 4f
cghi %r2,__CLOCK_REALTIME
je 5f
cghi %r2,__CLOCK_THREAD_CPUTIME_ID
je 9f
cghi %r2,-2 /* Per-thread CPUCLOCK with PID=0, VIRT=1 */
je 9f
+ cghi %r2,__CLOCK_MONOTONIC_COARSE
+ je 3f
cghi %r2,__CLOCK_MONOTONIC
jne 12f
@@ -33,10 +37,10 @@ __kernel_clock_gettime:
0: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
tmll %r4,0x0001 /* pending update ? loop */
jnz 0b
- stck 48(%r15) /* Store TOD clock */
+ stcke 48(%r15) /* Store TOD clock */
lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
lg %r0,__VDSO_WTOM_SEC(%r5)
- lg %r1,48(%r15)
+ lg %r1,49(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_WTOM_NSEC(%r5)
@@ -54,13 +58,33 @@ __kernel_clock_gettime:
lghi %r2,0
br %r14
+ /* CLOCK_MONOTONIC_COARSE */
+3: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
+ tmll %r4,0x0001 /* pending update ? loop */
+ jnz 3b
+ lg %r0,__VDSO_WTOM_CRS_SEC(%r5)
+ lg %r1,__VDSO_WTOM_CRS_NSEC(%r5)
+ clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
+ jne 3b
+ j 2b
+
+ /* CLOCK_REALTIME_COARSE */
+4: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
+ tmll %r4,0x0001 /* pending update ? loop */
+ jnz 4b
+ lg %r0,__VDSO_XTIME_CRS_SEC(%r5)
+ lg %r1,__VDSO_XTIME_CRS_NSEC(%r5)
+ clg %r4,__VDSO_UPD_COUNT(%r5) /* check update counter */
+ jne 4b
+ j 7f
+
/* CLOCK_REALTIME */
5: lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
tmll %r4,0x0001 /* pending update ? loop */
jnz 5b
- stck 48(%r15) /* Store TOD clock */
+ stcke 48(%r15) /* Store TOD clock */
lgf %r2,__VDSO_TK_SHIFT(%r5) /* Timekeeper shift */
- lg %r1,48(%r15)
+ lg %r1,49(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
diff --git a/arch/s390/kernel/vdso64/gettimeofday.S b/arch/s390/kernel/vdso64/gettimeofday.S
index d0860d1d0ccc..7a344995a97f 100644
--- a/arch/s390/kernel/vdso64/gettimeofday.S
+++ b/arch/s390/kernel/vdso64/gettimeofday.S
@@ -28,8 +28,8 @@ __kernel_gettimeofday:
lg %r4,__VDSO_UPD_COUNT(%r5) /* load update counter */
tmll %r4,0x0001 /* pending update ? loop */
jnz 0b
- stck 48(%r15) /* Store TOD clock */
- lg %r1,48(%r15)
+ stcke 48(%r15) /* Store TOD clock */
+ lg %r1,49(%r15)
sg %r1,__VDSO_XTIME_STAMP(%r5) /* TOD - cycle_last */
msgf %r1,__VDSO_TK_MULT(%r5) /* * tk->mult */
alg %r1,__VDSO_XTIME_NSEC(%r5) /* + tk->xtime_nsec */
diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c
index 8c34363d6f1e..416f2a323ba5 100644
--- a/arch/s390/kernel/vtime.c
+++ b/arch/s390/kernel/vtime.c
@@ -6,27 +6,18 @@
*/
#include <linux/kernel_stat.h>
-#include <linux/notifier.h>
-#include <linux/kprobes.h>
#include <linux/export.h>
#include <linux/kernel.h>
#include <linux/timex.h>
#include <linux/types.h>
#include <linux/time.h>
-#include <linux/cpu.h>
-#include <linux/smp.h>
-#include <asm/irq_regs.h>
#include <asm/cputime.h>
#include <asm/vtimer.h>
#include <asm/vtime.h>
-#include <asm/irq.h>
-#include "entry.h"
static void virt_timer_expire(void);
-DEFINE_PER_CPU(struct s390_idle_data, s390_idle);
-
static LIST_HEAD(virt_timer_list);
static DEFINE_SPINLOCK(virt_timer_lock);
static atomic64_t virt_timer_current;
@@ -152,49 +143,6 @@ void vtime_account_system(struct task_struct *tsk)
__attribute__((alias("vtime_account_irq_enter")));
EXPORT_SYMBOL_GPL(vtime_account_system);
-void __kprobes vtime_stop_cpu(void)
-{
- struct s390_idle_data *idle = &__get_cpu_var(s390_idle);
- unsigned long long idle_time;
- unsigned long psw_mask;
-
- trace_hardirqs_on();
-
- /* Wait for external, I/O or machine check interrupt. */
- psw_mask = PSW_KERNEL_BITS | PSW_MASK_WAIT | PSW_MASK_DAT |
- PSW_MASK_IO | PSW_MASK_EXT | PSW_MASK_MCHECK;
- idle->nohz_delay = 0;
-
- /* Call the assembler magic in entry.S */
- psw_idle(idle, psw_mask);
-
- /* Account time spent with enabled wait psw loaded as idle time. */
- idle->sequence++;
- smp_wmb();
- idle_time = idle->clock_idle_exit - idle->clock_idle_enter;
- idle->clock_idle_enter = idle->clock_idle_exit = 0ULL;
- idle->idle_time += idle_time;
- idle->idle_count++;
- account_idle_time(idle_time);
- smp_wmb();
- idle->sequence++;
-}
-
-cputime64_t s390_get_idle_time(int cpu)
-{
- struct s390_idle_data *idle = &per_cpu(s390_idle, cpu);
- unsigned long long now, idle_enter, idle_exit;
- unsigned int sequence;
-
- do {
- now = get_tod_clock();
- sequence = ACCESS_ONCE(idle->sequence);
- idle_enter = ACCESS_ONCE(idle->clock_idle_enter);
- idle_exit = ACCESS_ONCE(idle->clock_idle_exit);
- } while ((sequence & 1) || (ACCESS_ONCE(idle->sequence) != sequence));
- return idle_enter ? ((idle_exit ?: now) - idle_enter) : 0;
-}
-
/*
* Sorted add to a list. List is linear searched until first bigger
* element is found.
@@ -372,31 +320,8 @@ EXPORT_SYMBOL(del_virt_timer);
/*
* Start the virtual CPU timer on the current CPU.
*/
-void init_cpu_vtimer(void)
+void vtime_init(void)
{
/* set initial cpu timer */
set_vtimer(VTIMER_MAX_SLICE);
}
-
-static int s390_nohz_notify(struct notifier_block *self, unsigned long action,
- void *hcpu)
-{
- struct s390_idle_data *idle;
- long cpu = (long) hcpu;
-
- idle = &per_cpu(s390_idle, cpu);
- switch (action & ~CPU_TASKS_FROZEN) {
- case CPU_DYING:
- idle->nohz_delay = 0;
- default:
- break;
- }
- return NOTIFY_OK;
-}
-
-void __init vtime_init(void)
-{
- /* Enable cpu timer interrupts on the boot cpu. */
- init_cpu_vtimer();
- cpu_notifier(s390_nohz_notify, 0);
-}
diff --git a/arch/s390/lib/Makefile b/arch/s390/lib/Makefile
index c6d752e8bf28..a01df233856f 100644
--- a/arch/s390/lib/Makefile
+++ b/arch/s390/lib/Makefile
@@ -6,3 +6,5 @@ lib-y += delay.o string.o uaccess.o find.o
obj-$(CONFIG_32BIT) += div64.o qrnnd.o ucmpdi2.o mem32.o
obj-$(CONFIG_64BIT) += mem64.o
lib-$(CONFIG_SMP) += spinlock.o
+lib-$(CONFIG_KPROBES) += probes.o
+lib-$(CONFIG_UPROBES) += probes.o
diff --git a/arch/s390/lib/delay.c b/arch/s390/lib/delay.c
index a9f3d0042d58..16dc42d83f93 100644
--- a/arch/s390/lib/delay.c
+++ b/arch/s390/lib/delay.c
@@ -43,7 +43,7 @@ static void __udelay_disabled(unsigned long long usecs)
lockdep_off();
do {
set_clock_comparator(end);
- vtime_stop_cpu();
+ enabled_wait();
} while (get_tod_clock_fast() < end);
lockdep_on();
__ctl_load(cr0, 0, 0);
@@ -62,7 +62,7 @@ static void __udelay_enabled(unsigned long long usecs)
clock_saved = local_tick_disable();
set_clock_comparator(end);
}
- vtime_stop_cpu();
+ enabled_wait();
if (clock_saved)
local_tick_enable(clock_saved);
} while (get_tod_clock_fast() < end);
diff --git a/arch/s390/lib/probes.c b/arch/s390/lib/probes.c
new file mode 100644
index 000000000000..c5d64a099719
--- /dev/null
+++ b/arch/s390/lib/probes.c
@@ -0,0 +1,159 @@
+/*
+ * Common helper functions for kprobes and uprobes
+ *
+ * Copyright IBM Corp. 2014
+ */
+
+#include <linux/kprobes.h>
+#include <asm/dis.h>
+
+int probe_is_prohibited_opcode(u16 *insn)
+{
+ if (!is_known_insn((unsigned char *)insn))
+ return -EINVAL;
+ switch (insn[0] >> 8) {
+ case 0x0c: /* bassm */
+ case 0x0b: /* bsm */
+ case 0x83: /* diag */
+ case 0x44: /* ex */
+ case 0xac: /* stnsm */
+ case 0xad: /* stosm */
+ return -EINVAL;
+ case 0xc6:
+ switch (insn[0] & 0x0f) {
+ case 0x00: /* exrl */
+ return -EINVAL;
+ }
+ }
+ switch (insn[0]) {
+ case 0x0101: /* pr */
+ case 0xb25a: /* bsa */
+ case 0xb240: /* bakr */
+ case 0xb258: /* bsg */
+ case 0xb218: /* pc */
+ case 0xb228: /* pt */
+ case 0xb98d: /* epsw */
+ case 0xe560: /* tbegin */
+ case 0xe561: /* tbeginc */
+ case 0xb2f8: /* tend */
+ return -EINVAL;
+ }
+ return 0;
+}
+
+int probe_get_fixup_type(u16 *insn)
+{
+ /* default fixup method */
+ int fixup = FIXUP_PSW_NORMAL;
+
+ switch (insn[0] >> 8) {
+ case 0x05: /* balr */
+ case 0x0d: /* basr */
+ fixup = FIXUP_RETURN_REGISTER;
+ /* if r2 = 0, no branch will be taken */
+ if ((insn[0] & 0x0f) == 0)
+ fixup |= FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x06: /* bctr */
+ case 0x07: /* bcr */
+ fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x45: /* bal */
+ case 0x4d: /* bas */
+ fixup = FIXUP_RETURN_REGISTER;
+ break;
+ case 0x47: /* bc */
+ case 0x46: /* bct */
+ case 0x86: /* bxh */
+ case 0x87: /* bxle */
+ fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0x82: /* lpsw */
+ fixup = FIXUP_NOT_REQUIRED;
+ break;
+ case 0xb2: /* lpswe */
+ if ((insn[0] & 0xff) == 0xb2)
+ fixup = FIXUP_NOT_REQUIRED;
+ break;
+ case 0xa7: /* bras */
+ if ((insn[0] & 0x0f) == 0x05)
+ fixup |= FIXUP_RETURN_REGISTER;
+ break;
+ case 0xc0:
+ if ((insn[0] & 0x0f) == 0x05) /* brasl */
+ fixup |= FIXUP_RETURN_REGISTER;
+ break;
+ case 0xeb:
+ switch (insn[2] & 0xff) {
+ case 0x44: /* bxhg */
+ case 0x45: /* bxleg */
+ fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ }
+ break;
+ case 0xe3: /* bctg */
+ if ((insn[2] & 0xff) == 0x46)
+ fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ case 0xec:
+ switch (insn[2] & 0xff) {
+ case 0xe5: /* clgrb */
+ case 0xe6: /* cgrb */
+ case 0xf6: /* crb */
+ case 0xf7: /* clrb */
+ case 0xfc: /* cgib */
+ case 0xfd: /* cglib */
+ case 0xfe: /* cib */
+ case 0xff: /* clib */
+ fixup = FIXUP_BRANCH_NOT_TAKEN;
+ break;
+ }
+ break;
+ }
+ return fixup;
+}
+
+int probe_is_insn_relative_long(u16 *insn)
+{
+ /* Check if we have a RIL-b or RIL-c format instruction which
+ * we need to modify in order to avoid instruction emulation. */
+ switch (insn[0] >> 8) {
+ case 0xc0:
+ if ((insn[0] & 0x0f) == 0x00) /* larl */
+ return true;
+ break;
+ case 0xc4:
+ switch (insn[0] & 0x0f) {
+ case 0x02: /* llhrl */
+ case 0x04: /* lghrl */
+ case 0x05: /* lhrl */
+ case 0x06: /* llghrl */
+ case 0x07: /* sthrl */
+ case 0x08: /* lgrl */
+ case 0x0b: /* stgrl */
+ case 0x0c: /* lgfrl */
+ case 0x0d: /* lrl */
+ case 0x0e: /* llgfrl */
+ case 0x0f: /* strl */
+ return true;
+ }
+ break;
+ case 0xc6:
+ switch (insn[0] & 0x0f) {
+ case 0x02: /* pfdrl */
+ case 0x04: /* cghrl */
+ case 0x05: /* chrl */
+ case 0x06: /* clghrl */
+ case 0x07: /* clhrl */
+ case 0x08: /* cgrl */
+ case 0x0a: /* clgrl */
+ case 0x0c: /* cgfrl */
+ case 0x0d: /* crl */
+ case 0x0e: /* clgfrl */
+ case 0x0f: /* clrl */
+ return true;
+ }
+ break;
+ }
+ return false;
+}
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c
index 5b0e445bc3f3..034a35a3e9c1 100644
--- a/arch/s390/lib/spinlock.c
+++ b/arch/s390/lib/spinlock.c
@@ -98,17 +98,6 @@ void arch_spin_lock_wait_flags(arch_spinlock_t *lp, unsigned long flags)
}
EXPORT_SYMBOL(arch_spin_lock_wait_flags);
-void arch_spin_relax(arch_spinlock_t *lp)
-{
- unsigned int cpu = lp->lock;
- if (cpu != 0) {
- if (MACHINE_IS_VM || MACHINE_IS_KVM ||
- !smp_vcpu_scheduled(~cpu))
- smp_yield_cpu(~cpu);
- }
-}
-EXPORT_SYMBOL(arch_spin_relax);
-
int arch_spin_trylock_retry(arch_spinlock_t *lp)
{
int count;
@@ -122,15 +111,21 @@ EXPORT_SYMBOL(arch_spin_trylock_retry);
void _raw_read_lock_wait(arch_rwlock_t *rw)
{
- unsigned int old;
+ unsigned int owner, old;
int count = spin_retry;
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+ __RAW_LOCK(&rw->lock, -1, __RAW_OP_ADD);
+#endif
+ owner = 0;
while (1) {
if (count-- <= 0) {
- smp_yield();
+ if (owner && !smp_vcpu_scheduled(~owner))
+ smp_yield_cpu(~owner);
count = spin_retry;
}
old = ACCESS_ONCE(rw->lock);
+ owner = ACCESS_ONCE(rw->owner);
if ((int) old < 0)
continue;
if (_raw_compare_and_swap(&rw->lock, old, old + 1))
@@ -139,28 +134,6 @@ void _raw_read_lock_wait(arch_rwlock_t *rw)
}
EXPORT_SYMBOL(_raw_read_lock_wait);
-void _raw_read_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
-{
- unsigned int old;
- int count = spin_retry;
-
- local_irq_restore(flags);
- while (1) {
- if (count-- <= 0) {
- smp_yield();
- count = spin_retry;
- }
- old = ACCESS_ONCE(rw->lock);
- if ((int) old < 0)
- continue;
- local_irq_disable();
- if (_raw_compare_and_swap(&rw->lock, old, old + 1))
- return;
- local_irq_restore(flags);
- }
-}
-EXPORT_SYMBOL(_raw_read_lock_wait_flags);
-
int _raw_read_trylock_retry(arch_rwlock_t *rw)
{
unsigned int old;
@@ -177,46 +150,62 @@ int _raw_read_trylock_retry(arch_rwlock_t *rw)
}
EXPORT_SYMBOL(_raw_read_trylock_retry);
-void _raw_write_lock_wait(arch_rwlock_t *rw)
+#ifdef CONFIG_HAVE_MARCH_Z196_FEATURES
+
+void _raw_write_lock_wait(arch_rwlock_t *rw, unsigned int prev)
{
- unsigned int old;
+ unsigned int owner, old;
int count = spin_retry;
+ owner = 0;
while (1) {
if (count-- <= 0) {
- smp_yield();
+ if (owner && !smp_vcpu_scheduled(~owner))
+ smp_yield_cpu(~owner);
count = spin_retry;
}
old = ACCESS_ONCE(rw->lock);
- if (old)
- continue;
- if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000))
- return;
+ owner = ACCESS_ONCE(rw->owner);
+ smp_rmb();
+ if ((int) old >= 0) {
+ prev = __RAW_LOCK(&rw->lock, 0x80000000, __RAW_OP_OR);
+ old = prev;
+ }
+ if ((old & 0x7fffffff) == 0 && (int) prev >= 0)
+ break;
}
}
EXPORT_SYMBOL(_raw_write_lock_wait);
-void _raw_write_lock_wait_flags(arch_rwlock_t *rw, unsigned long flags)
+#else /* CONFIG_HAVE_MARCH_Z196_FEATURES */
+
+void _raw_write_lock_wait(arch_rwlock_t *rw)
{
- unsigned int old;
+ unsigned int owner, old, prev;
int count = spin_retry;
- local_irq_restore(flags);
+ prev = 0x80000000;
+ owner = 0;
while (1) {
if (count-- <= 0) {
- smp_yield();
+ if (owner && !smp_vcpu_scheduled(~owner))
+ smp_yield_cpu(~owner);
count = spin_retry;
}
old = ACCESS_ONCE(rw->lock);
- if (old)
- continue;
- local_irq_disable();
- if (_raw_compare_and_swap(&rw->lock, 0, 0x80000000))
- return;
- local_irq_restore(flags);
+ owner = ACCESS_ONCE(rw->owner);
+ if ((int) old >= 0 &&
+ _raw_compare_and_swap(&rw->lock, old, old | 0x80000000))
+ prev = old;
+ else
+ smp_rmb();
+ if ((old & 0x7fffffff) == 0 && (int) prev >= 0)
+ break;
}
}
-EXPORT_SYMBOL(_raw_write_lock_wait_flags);
+EXPORT_SYMBOL(_raw_write_lock_wait);
+
+#endif /* CONFIG_HAVE_MARCH_Z196_FEATURES */
int _raw_write_trylock_retry(arch_rwlock_t *rw)
{
@@ -233,3 +222,13 @@ int _raw_write_trylock_retry(arch_rwlock_t *rw)
return 0;
}
EXPORT_SYMBOL(_raw_write_trylock_retry);
+
+void arch_lock_relax(unsigned int cpu)
+{
+ if (!cpu)
+ return;
+ if (MACHINE_IS_LPAR && smp_vcpu_scheduled(~cpu))
+ return;
+ smp_yield_cpu(~cpu);
+}
+EXPORT_SYMBOL(arch_lock_relax);
diff --git a/arch/s390/mm/dump_pagetables.c b/arch/s390/mm/dump_pagetables.c
index 46d517c3c763..d46cadeda204 100644
--- a/arch/s390/mm/dump_pagetables.c
+++ b/arch/s390/mm/dump_pagetables.c
@@ -54,7 +54,6 @@ static void print_prot(struct seq_file *m, unsigned int pr, int level)
return;
}
seq_printf(m, "%s", pr & _PAGE_PROTECT ? "RO " : "RW ");
- seq_printf(m, "%s", pr & _PAGE_CO ? "CO " : " ");
seq_putc(m, '\n');
}
@@ -129,7 +128,7 @@ static void walk_pte_level(struct seq_file *m, struct pg_state *st,
}
#ifdef CONFIG_64BIT
-#define _PMD_PROT_MASK (_SEGMENT_ENTRY_PROTECT | _SEGMENT_ENTRY_CO)
+#define _PMD_PROT_MASK _SEGMENT_ENTRY_PROTECT
#else
#define _PMD_PROT_MASK 0
#endif
@@ -157,7 +156,7 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
}
#ifdef CONFIG_64BIT
-#define _PUD_PROT_MASK (_REGION3_ENTRY_RO | _REGION3_ENTRY_CO)
+#define _PUD_PROT_MASK _REGION3_ENTRY_RO
#else
#define _PUD_PROT_MASK 0
#endif
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 389bc17934b7..3c80d2e38f03 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -88,7 +88,7 @@ void set_huge_pte_at(struct mm_struct *mm, unsigned long addr,
pmd_val(pmd) &= ~_SEGMENT_ENTRY_ORIGIN;
pmd_val(pmd) |= pte_page(pte)[1].index;
} else
- pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO;
+ pmd_val(pmd) |= _SEGMENT_ENTRY_LARGE;
*(pmd_t *) ptep = pmd;
}
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index 8400f494623f..3fef3b299665 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -6,6 +6,7 @@
#include <linux/module.h>
#include <linux/mm.h>
#include <asm/cacheflush.h>
+#include <asm/facility.h>
#include <asm/pgtable.h>
#include <asm/page.h>
@@ -103,27 +104,50 @@ int set_memory_x(unsigned long addr, int numpages)
}
#ifdef CONFIG_DEBUG_PAGEALLOC
+
+static void ipte_range(pte_t *pte, unsigned long address, int nr)
+{
+ int i;
+
+ if (test_facility(13) && IS_ENABLED(CONFIG_64BIT)) {
+ __ptep_ipte_range(address, nr - 1, pte);
+ return;
+ }
+ for (i = 0; i < nr; i++) {
+ __ptep_ipte(address, pte);
+ address += PAGE_SIZE;
+ pte++;
+ }
+}
+
void kernel_map_pages(struct page *page, int numpages, int enable)
{
unsigned long address;
+ int nr, i, j;
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
pte_t *pte;
- int i;
- for (i = 0; i < numpages; i++) {
+ for (i = 0; i < numpages;) {
address = page_to_phys(page + i);
pgd = pgd_offset_k(address);
pud = pud_offset(pgd, address);
pmd = pmd_offset(pud, address);
pte = pte_offset_kernel(pmd, address);
- if (!enable) {
- __ptep_ipte(address, pte);
- pte_val(*pte) = _PAGE_INVALID;
- continue;
+ nr = (unsigned long)pte >> ilog2(sizeof(long));
+ nr = PTRS_PER_PTE - (nr & (PTRS_PER_PTE - 1));
+ nr = min(numpages - i, nr);
+ if (enable) {
+ for (j = 0; j < nr; j++) {
+ pte_val(*pte) = __pa(address);
+ address += PAGE_SIZE;
+ pte++;
+ }
+ } else {
+ ipte_range(pte, address, nr);
}
- pte_val(*pte) = __pa(address);
+ i += nr;
}
}
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index fdbd7888cb07..b1593c2f751a 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -236,8 +236,7 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
if (!new_page)
goto out;
pmd_val(*pm_dir) = __pa(new_page) |
- _SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE |
- _SEGMENT_ENTRY_CO;
+ _SEGMENT_ENTRY | _SEGMENT_ENTRY_LARGE;
address = (address + PMD_SIZE) & PMD_MASK;
continue;
}
@@ -253,9 +252,9 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
pt_dir = pte_offset_kernel(pm_dir, address);
if (pte_none(*pt_dir)) {
- unsigned long new_page;
+ void *new_page;
- new_page =__pa(vmem_alloc_pages(0));
+ new_page = vmemmap_alloc_block(PAGE_SIZE, node);
if (!new_page)
goto out;
pte_val(*pt_dir) =
@@ -263,7 +262,6 @@ int __meminit vmemmap_populate(unsigned long start, unsigned long end, int node)
}
address += PAGE_SIZE;
}
- memset((void *)start, 0, end - start);
ret = 0;
out:
return ret;