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authorPaolo Bonzini <pbonzini@redhat.com>2020-04-21 09:37:13 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2020-04-21 09:37:13 -0400
commit3bda03865fcaf5e30248bf4b7b37a81f6966caf9 (patch)
tree40e1edb696326bfbd028afc271e7272d87b6b506 /arch/s390
parent7f4b5cde24094127ace370c3c6b82fef65d9f71f (diff)
parent2a173ec993baa6a97e7b0fb89240200a88d90746 (diff)
downloadlinux-3bda03865fcaf5e30248bf4b7b37a81f6966caf9.tar.bz2
Merge tag 'kvm-s390-master-5.7-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-master
KVM: s390: Fix for 5.7 and maintainer update - Silence false positive lockdep warning - add Claudio as reviewer
Diffstat (limited to 'arch/s390')
-rw-r--r--arch/s390/Kconfig73
-rw-r--r--arch/s390/appldata/appldata_os.c2
-rw-r--r--arch/s390/boot/.gitignore1
-rw-r--r--arch/s390/boot/compressed/.gitignore1
-rw-r--r--arch/s390/boot/install.sh17
-rw-r--r--arch/s390/configs/debug_defconfig1
-rw-r--r--arch/s390/configs/defconfig1
-rw-r--r--arch/s390/crypto/aes_s390.c3
-rw-r--r--arch/s390/include/asm/hw_irq.h1
-rw-r--r--arch/s390/include/asm/ipl.h1
-rw-r--r--arch/s390/include/asm/lowcore.h4
-rw-r--r--arch/s390/include/asm/mmu.h2
-rw-r--r--arch/s390/include/asm/mmu_context.h44
-rw-r--r--arch/s390/include/asm/numa.h13
-rw-r--r--arch/s390/include/asm/page.h21
-rw-r--r--arch/s390/include/asm/pci.h6
-rw-r--r--arch/s390/include/asm/pgalloc.h39
-rw-r--r--arch/s390/include/asm/processor.h10
-rw-r--r--arch/s390/include/asm/qdio.h16
-rw-r--r--arch/s390/include/asm/setup.h7
-rw-r--r--arch/s390/include/asm/smp.h1
-rw-r--r--arch/s390/include/asm/topology.h15
-rw-r--r--arch/s390/kernel/.gitignore1
-rw-r--r--arch/s390/kernel/Makefile1
-rw-r--r--arch/s390/kernel/asm-offsets.c2
-rw-r--r--arch/s390/kernel/diag.c2
-rw-r--r--arch/s390/kernel/entry.S65
-rw-r--r--arch/s390/kernel/ipl.c73
-rw-r--r--arch/s390/kernel/irq.c26
-rw-r--r--arch/s390/kernel/machine_kexec.c31
-rw-r--r--arch/s390/kernel/perf_cpum_cf_events.c123
-rw-r--r--arch/s390/kernel/perf_cpum_sf.c44
-rw-r--r--arch/s390/kernel/process.c1
-rw-r--r--arch/s390/kernel/processor.c34
-rw-r--r--arch/s390/kernel/setup.c4
-rw-r--r--arch/s390/kernel/signal.c4
-rw-r--r--arch/s390/kernel/smp.c13
-rw-r--r--arch/s390/kernel/suspend.c240
-rw-r--r--arch/s390/kernel/swsusp.S276
-rw-r--r--arch/s390/kernel/topology.c34
-rw-r--r--arch/s390/kernel/traps.c2
-rw-r--r--arch/s390/kernel/vdso64/.gitignore1
-rw-r--r--arch/s390/kvm/Kconfig4
-rw-r--r--arch/s390/kvm/interrupt.c2
-rw-r--r--arch/s390/mm/cmm.c46
-rw-r--r--arch/s390/mm/fault.c25
-rw-r--r--arch/s390/mm/hugetlbpage.c11
-rw-r--r--arch/s390/mm/init.c9
-rw-r--r--arch/s390/mm/mmap.c40
-rw-r--r--arch/s390/mm/pageattr.c16
-rw-r--r--arch/s390/mm/pgalloc.c108
-rw-r--r--arch/s390/mm/vmem.c4
-rw-r--r--arch/s390/numa/Makefile2
-rw-r--r--arch/s390/numa/mode_emu.c577
-rw-r--r--arch/s390/numa/numa.c147
-rw-r--r--arch/s390/numa/numa_mode.h25
-rw-r--r--arch/s390/numa/toptree.c351
-rw-r--r--arch/s390/numa/toptree.h61
-rw-r--r--arch/s390/pci/pci.c83
-rw-r--r--arch/s390/pci/pci_clp.c2
-rw-r--r--arch/s390/purgatory/.gitignore1
-rw-r--r--arch/s390/tools/.gitignore1
62 files changed, 574 insertions, 2197 deletions
diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 59c216af6264..2167bce993ff 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -102,13 +102,13 @@ config S390
select ARCH_INLINE_WRITE_UNLOCK_IRQ
select ARCH_INLINE_WRITE_UNLOCK_IRQRESTORE
select ARCH_KEEP_MEMBLOCK
- select ARCH_SAVE_PAGE_KEYS if HIBERNATION
select ARCH_STACKWALK
select ARCH_SUPPORTS_ATOMIC_RMW
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_USE_BUILTIN_BSWAP
select ARCH_USE_CMPXCHG_LOCKREF
select ARCH_WANTS_DYNAMIC_TASK_STRUCT
+ select ARCH_WANT_DEFAULT_BPF_JIT
select ARCH_WANT_IPC_PARSE_VERSION
select BUILDTIME_TABLE_SORT
select CLONE_BACKWARDS2
@@ -451,14 +451,6 @@ config NR_CPUS
config HOTPLUG_CPU
def_bool y
-# Some NUMA nodes have memory ranges that span
-# other nodes. Even though a pfn is valid and
-# between a node's start and end pfns, it may not
-# reside on that node. See memmap_init_zone()
-# for details. <- They meant memory holes!
-config NODES_SPAN_OTHER_NODES
- def_bool NUMA
-
config NUMA
bool "NUMA support"
depends on SCHED_TOPOLOGY
@@ -468,58 +460,9 @@ config NUMA
This option adds NUMA support to the kernel.
- An operation mode can be selected by appending
- numa=<method> to the kernel command line.
-
- The default behaviour is identical to appending numa=plain to
- the command line. This will create just one node with all
- available memory and all CPUs in it.
-
config NODES_SHIFT
- int "Maximum NUMA nodes (as a power of 2)"
- range 1 10
- depends on NUMA
- default "4"
- help
- Specify the maximum number of NUMA nodes available on the target
- system. Increases memory reserved to accommodate various tables.
-
-menu "Select NUMA modes"
- depends on NUMA
-
-config NUMA_EMU
- bool "NUMA emulation"
- default y
- help
- Numa emulation mode will split the available system memory into
- equal chunks which then are distributed over the configured number
- of nodes in a round-robin manner.
-
- The number of fake nodes is limited by the number of available memory
- chunks (i.e. memory size / fake size) and the number of supported
- nodes in the kernel.
-
- The CPUs are assigned to the nodes in a way that partially respects
- the original machine topology (if supported by the machine).
- Fair distribution of the CPUs is not guaranteed.
-
-config EMU_SIZE
- hex "NUMA emulation memory chunk size"
- default 0x10000000
- range 0x400000 0x100000000
- depends on NUMA_EMU
- help
- Select the default size by which the memory is chopped and then
- assigned to emulated NUMA nodes.
-
- This can be overridden by specifying
-
- emu_size=<n>
-
- on the kernel command line where also suffixes K, M, G, and T are
- supported.
-
-endmenu
+ int
+ default "1"
config SCHED_SMT
def_bool n
@@ -867,15 +810,6 @@ config SECCOMP
If unsure, say Y.
-menu "Power Management"
-
-config ARCH_HIBERNATION_POSSIBLE
- def_bool y
-
-source "kernel/power/Kconfig"
-
-endmenu
-
config CCW
def_bool y
@@ -1010,7 +944,6 @@ config S390_GUEST
select TTY
select VIRTUALIZATION
select VIRTIO
- select VIRTIO_CONSOLE
help
Enabling this option adds support for virtio based paravirtual device
drivers on s390.
diff --git a/arch/s390/appldata/appldata_os.c b/arch/s390/appldata/appldata_os.c
index 54f375627532..8bf46d705957 100644
--- a/arch/s390/appldata/appldata_os.c
+++ b/arch/s390/appldata/appldata_os.c
@@ -75,7 +75,7 @@ struct appldata_os_data {
(waiting for I/O) */
/* per cpu data */
- struct appldata_os_per_cpu os_cpu[0];
+ struct appldata_os_per_cpu os_cpu[];
} __attribute__((packed));
static struct appldata_os_data *appldata_os_data;
diff --git a/arch/s390/boot/.gitignore b/arch/s390/boot/.gitignore
index 16ff906e4610..b265bfede188 100644
--- a/arch/s390/boot/.gitignore
+++ b/arch/s390/boot/.gitignore
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
image
bzImage
section_cmp.*
diff --git a/arch/s390/boot/compressed/.gitignore b/arch/s390/boot/compressed/.gitignore
index e72fcd7ecebb..765a08f1bd77 100644
--- a/arch/s390/boot/compressed/.gitignore
+++ b/arch/s390/boot/compressed/.gitignore
@@ -1,2 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
vmlinux
vmlinux.lds
diff --git a/arch/s390/boot/install.sh b/arch/s390/boot/install.sh
index bed227f267ae..515b27a996b3 100644
--- a/arch/s390/boot/install.sh
+++ b/arch/s390/boot/install.sh
@@ -21,15 +21,10 @@
if [ -x ~/bin/${INSTALLKERNEL} ]; then exec ~/bin/${INSTALLKERNEL} "$@"; fi
if [ -x /sbin/${INSTALLKERNEL} ]; then exec /sbin/${INSTALLKERNEL} "$@"; fi
-# Default install - same as make zlilo
+echo "Warning: '${INSTALLKERNEL}' command not available - additional " \
+ "bootloader config required" >&2
+if [ -f $4/vmlinuz-$1 ]; then mv $4/vmlinuz-$1 $4/vmlinuz-$1.old; fi
+if [ -f $4/System.map-$1 ]; then mv $4/System.map-$1 $4/System.map-$1.old; fi
-if [ -f $4/vmlinuz ]; then
- mv $4/vmlinuz $4/vmlinuz.old
-fi
-
-if [ -f $4/System.map ]; then
- mv $4/System.map $4/System.old
-fi
-
-cat $2 > $4/vmlinuz
-cp $3 $4/System.map
+cat $2 > $4/vmlinuz-$1
+cp $3 $4/System.map-$1
diff --git a/arch/s390/configs/debug_defconfig b/arch/s390/configs/debug_defconfig
index 0c86ba19fa2b..46038bc58c9e 100644
--- a/arch/s390/configs/debug_defconfig
+++ b/arch/s390/configs/debug_defconfig
@@ -532,6 +532,7 @@ CONFIG_INPUT_EVDEV=y
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=0
CONFIG_NULL_TTY=m
+CONFIG_VIRTIO_CONSOLE=y
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_RAW_DRIVER=m
CONFIG_HANGCHECK_TIMER=m
diff --git a/arch/s390/configs/defconfig b/arch/s390/configs/defconfig
index 6b27d861a9a3..7cd0648c1f4e 100644
--- a/arch/s390/configs/defconfig
+++ b/arch/s390/configs/defconfig
@@ -528,6 +528,7 @@ CONFIG_INPUT_EVDEV=y
# CONFIG_SERIO is not set
CONFIG_LEGACY_PTY_COUNT=0
CONFIG_NULL_TTY=m
+CONFIG_VIRTIO_CONSOLE=y
CONFIG_HW_RANDOM_VIRTIO=m
CONFIG_RAW_DRIVER=m
CONFIG_HANGCHECK_TIMER=m
diff --git a/arch/s390/crypto/aes_s390.c b/arch/s390/crypto/aes_s390.c
index 1c23d84a9097..73044634d342 100644
--- a/arch/s390/crypto/aes_s390.c
+++ b/arch/s390/crypto/aes_s390.c
@@ -342,6 +342,7 @@ static int cbc_aes_crypt(struct skcipher_request *req, unsigned long modifier)
memcpy(walk.iv, param.iv, AES_BLOCK_SIZE);
ret = skcipher_walk_done(&walk, nbytes - n);
}
+ memzero_explicit(&param, sizeof(param));
return ret;
}
@@ -470,6 +471,8 @@ static int xts_aes_crypt(struct skcipher_request *req, unsigned long modifier)
walk.dst.virt.addr, walk.src.virt.addr, n);
ret = skcipher_walk_done(&walk, nbytes - n);
}
+ memzero_explicit(&pcc_param, sizeof(pcc_param));
+ memzero_explicit(&xts_param, sizeof(xts_param));
return ret;
}
diff --git a/arch/s390/include/asm/hw_irq.h b/arch/s390/include/asm/hw_irq.h
index adae176757ae..9078b5b6b837 100644
--- a/arch/s390/include/asm/hw_irq.h
+++ b/arch/s390/include/asm/hw_irq.h
@@ -7,6 +7,5 @@
void __init init_airq_interrupts(void);
void __init init_cio_interrupts(void);
-void __init init_ext_interrupts(void);
#endif
diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h
index 084e71b7272a..b63bd66404b8 100644
--- a/arch/s390/include/asm/ipl.h
+++ b/arch/s390/include/asm/ipl.h
@@ -119,6 +119,7 @@ enum diag308_subcode {
DIAG308_LOAD_NORMAL_DUMP = 4,
DIAG308_SET = 5,
DIAG308_STORE = 6,
+ DIAG308_LOAD_NORMAL = 7,
};
enum diag308_rc {
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 237ee0c4169f..612ed3c6d581 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -141,7 +141,9 @@ struct lowcore {
/* br %r1 trampoline */
__u16 br_r1_trampoline; /* 0x0400 */
- __u8 pad_0x0402[0x0e00-0x0402]; /* 0x0402 */
+ __u32 return_lpswe; /* 0x0402 */
+ __u32 return_mcck_lpswe; /* 0x0406 */
+ __u8 pad_0x040a[0x0e00-0x040a]; /* 0x040a */
/*
* 0xe00 contains the address of the IPL Parameter Information
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h
index e21b618ad432..e12ff0f29d1a 100644
--- a/arch/s390/include/asm/mmu.h
+++ b/arch/s390/include/asm/mmu.h
@@ -34,8 +34,6 @@ typedef struct {
unsigned int uses_cmm:1;
/* The gmaps associated with this context are allowed to use huge pages. */
unsigned int allow_gmap_hpage_1m:1;
- /* The mmu context is for compat task */
- unsigned int compat_mm:1;
} mm_context_t;
#define INIT_MM_CONTEXT(name) \
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index afa836014076..c9f3d8a52756 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -18,6 +18,8 @@
static inline int init_new_context(struct task_struct *tsk,
struct mm_struct *mm)
{
+ unsigned long asce_type, init_entry;
+
spin_lock_init(&mm->context.lock);
INIT_LIST_HEAD(&mm->context.pgtable_list);
INIT_LIST_HEAD(&mm->context.gmap_list);
@@ -26,7 +28,6 @@ static inline int init_new_context(struct task_struct *tsk,
atomic_set(&mm->context.is_protected, 0);
mm->context.gmap_asce = 0;
mm->context.flush_mm = 0;
- mm->context.compat_mm = test_thread_flag(TIF_31BIT);
#ifdef CONFIG_PGSTE
mm->context.alloc_pgste = page_table_allocate_pgste ||
test_thread_flag(TIF_PGSTE) ||
@@ -37,33 +38,34 @@ static inline int init_new_context(struct task_struct *tsk,
mm->context.allow_gmap_hpage_1m = 0;
#endif
switch (mm->context.asce_limit) {
- case _REGION2_SIZE:
+ default:
/*
- * forked 3-level task, fall through to set new asce with new
- * mm->pgd
+ * context created by exec, the value of asce_limit can
+ * only be zero in this case
*/
- case 0:
- /* context created by exec, set asce limit to 4TB */
- mm->context.asce_limit = STACK_TOP_MAX;
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_REGION3;
+ VM_BUG_ON(mm->context.asce_limit);
+ /* continue as 3-level task */
+ mm->context.asce_limit = _REGION2_SIZE;
+ fallthrough;
+ case _REGION2_SIZE:
+ /* forked 3-level task */
+ init_entry = _REGION3_ENTRY_EMPTY;
+ asce_type = _ASCE_TYPE_REGION3;
break;
- case -PAGE_SIZE:
- /* forked 5-level task, set new asce with new_mm->pgd */
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_REGION1;
+ case TASK_SIZE_MAX:
+ /* forked 5-level task */
+ init_entry = _REGION1_ENTRY_EMPTY;
+ asce_type = _ASCE_TYPE_REGION1;
break;
case _REGION1_SIZE:
- /* forked 4-level task, set new asce with new mm->pgd */
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
+ /* forked 4-level task */
+ init_entry = _REGION2_ENTRY_EMPTY;
+ asce_type = _ASCE_TYPE_REGION2;
break;
- case _REGION3_SIZE:
- /* forked 2-level compat task, set new asce with new mm->pgd */
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
}
- crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm));
+ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
+ _ASCE_USER_BITS | asce_type;
+ crst_table_init((unsigned long *) mm->pgd, init_entry);
return 0;
}
diff --git a/arch/s390/include/asm/numa.h b/arch/s390/include/asm/numa.h
index 35f8cbe7e5bb..23cd5d1b734b 100644
--- a/arch/s390/include/asm/numa.h
+++ b/arch/s390/include/asm/numa.h
@@ -13,24 +13,13 @@
#ifdef CONFIG_NUMA
#include <linux/numa.h>
-#include <linux/cpumask.h>
void numa_setup(void);
-int numa_pfn_to_nid(unsigned long pfn);
-int __node_distance(int a, int b);
-void numa_update_cpu_topology(void);
-
-extern cpumask_t node_to_cpumask_map[MAX_NUMNODES];
-extern int numa_debug_enabled;
#else
static inline void numa_setup(void) { }
-static inline void numa_update_cpu_topology(void) { }
-static inline int numa_pfn_to_nid(unsigned long pfn)
-{
- return 0;
-}
#endif /* CONFIG_NUMA */
+
#endif /* _ASM_S390_NUMA_H */
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h
index 62440a82731a..cc98f9b78fd4 100644
--- a/arch/s390/include/asm/page.h
+++ b/arch/s390/include/asm/page.h
@@ -166,23 +166,22 @@ int arch_make_page_accessible(struct page *page);
#define __pa(x) ((unsigned long)(x))
#define __va(x) ((void *)(unsigned long)(x))
-#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
+#define phys_to_pfn(phys) ((phys) >> PAGE_SHIFT)
+#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
+
+#define phys_to_page(phys) pfn_to_page(phys_to_pfn(phys))
+#define page_to_phys(page) pfn_to_phys(page_to_pfn(page))
+
+#define pfn_to_virt(pfn) __va(pfn_to_phys(pfn))
+#define virt_to_pfn(kaddr) (phys_to_pfn(__pa(kaddr)))
#define pfn_to_kaddr(pfn) pfn_to_virt(pfn)
#define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
#define page_to_virt(page) pfn_to_virt(page_to_pfn(page))
-#define phys_to_pfn(kaddr) ((kaddr) >> PAGE_SHIFT)
-#define pfn_to_phys(pfn) ((pfn) << PAGE_SHIFT)
-
-#define phys_to_page(kaddr) pfn_to_page(phys_to_pfn(kaddr))
-#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
-
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_addr_valid(kaddr) pfn_valid(virt_to_pfn(kaddr))
-#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+#define VM_DATA_DEFAULT_FLAGS VM_DATA_FLAGS_NON_EXEC
#include <asm-generic/memory_model.h>
#include <asm-generic/getorder.h>
diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h
index b05187ce5dbd..7485ee561fec 100644
--- a/arch/s390/include/asm/pci.h
+++ b/arch/s390/include/asm/pci.h
@@ -5,6 +5,7 @@
#include <linux/pci.h>
#include <linux/mutex.h>
#include <linux/iommu.h>
+#include <linux/pci_hotplug.h>
#include <asm-generic/pci.h>
#include <asm/pci_clp.h>
#include <asm/pci_debug.h>
@@ -25,6 +26,7 @@ int pci_proc_domain(struct pci_bus *);
#define ZPCI_NR_DMA_SPACES 1
#define ZPCI_NR_DEVICES CONFIG_PCI_NR_FUNCTIONS
+#define ZPCI_DOMAIN_BITMAP_SIZE (1 << 16)
/* PCI Function Controls */
#define ZPCI_FC_FN_ENABLED 0x80
@@ -96,6 +98,7 @@ struct s390_domain;
struct zpci_dev {
struct pci_bus *bus;
struct list_head entry; /* list of all zpci_devices, needed for hotplug, etc. */
+ struct hotplug_slot hotplug_slot;
enum zpci_state state;
u32 fid; /* function ID, used by sclp */
@@ -186,6 +189,9 @@ int clp_enable_fh(struct zpci_dev *, u8);
int clp_disable_fh(struct zpci_dev *);
int clp_get_state(u32 fid, enum zpci_state *state);
+/* UID */
+void update_uid_checking(bool new);
+
/* IOMMU Interface */
int zpci_init_iommu(struct zpci_dev *zdev);
void zpci_destroy_iommu(struct zpci_dev *zdev);
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index 77606c4acd58..74a352f8c0d1 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -34,19 +34,21 @@ static inline void crst_table_init(unsigned long *crst, unsigned long entry)
memset64((u64 *)crst, entry, _CRST_ENTRIES);
}
-static inline unsigned long pgd_entry_type(struct mm_struct *mm)
+int crst_table_upgrade(struct mm_struct *mm, unsigned long limit);
+
+static inline unsigned long check_asce_limit(struct mm_struct *mm, unsigned long addr,
+ unsigned long len)
{
- if (mm_pmd_folded(mm))
- return _SEGMENT_ENTRY_EMPTY;
- if (mm_pud_folded(mm))
- return _REGION3_ENTRY_EMPTY;
- if (mm_p4d_folded(mm))
- return _REGION2_ENTRY_EMPTY;
- return _REGION1_ENTRY_EMPTY;
-}
+ int rc;
-int crst_table_upgrade(struct mm_struct *mm, unsigned long limit);
-void crst_table_downgrade(struct mm_struct *);
+ if (addr + len > mm->context.asce_limit &&
+ addr + len <= TASK_SIZE) {
+ rc = crst_table_upgrade(mm, addr + len);
+ if (rc)
+ return (unsigned long) rc;
+ }
+ return addr;
+}
static inline p4d_t *p4d_alloc_one(struct mm_struct *mm, unsigned long address)
{
@@ -116,24 +118,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
static inline pgd_t *pgd_alloc(struct mm_struct *mm)
{
- unsigned long *table = crst_table_alloc(mm);
-
- if (!table)
- return NULL;
- if (mm->context.asce_limit == _REGION3_SIZE) {
- /* Forking a compat process with 2 page table levels */
- if (!pgtable_pmd_page_ctor(virt_to_page(table))) {
- crst_table_free(mm, table);
- return NULL;
- }
- }
- return (pgd_t *) table;
+ return (pgd_t *) crst_table_alloc(mm);
}
static inline void pgd_free(struct mm_struct *mm, pgd_t *pgd)
{
- if (mm->context.asce_limit == _REGION3_SIZE)
- pgtable_pmd_page_dtor(virt_to_page(pgd));
crst_table_free(mm, (unsigned long *) pgd);
}
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index aadb3d0e2adc..555d148ccf32 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -92,15 +92,15 @@ extern void __bpon(void);
*/
#define TASK_SIZE_OF(tsk) (test_tsk_thread_flag(tsk, TIF_31BIT) ? \
- (1UL << 31) : -PAGE_SIZE)
+ _REGION3_SIZE : TASK_SIZE_MAX)
#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \
- (1UL << 30) : (1UL << 41))
+ (_REGION3_SIZE >> 1) : (_REGION2_SIZE >> 1))
#define TASK_SIZE TASK_SIZE_OF(current)
#define TASK_SIZE_MAX (-PAGE_SIZE)
#define STACK_TOP (test_thread_flag(TIF_31BIT) ? \
- (1UL << 31) : (1UL << 42))
-#define STACK_TOP_MAX (1UL << 42)
+ _REGION3_SIZE : _REGION2_SIZE)
+#define STACK_TOP_MAX _REGION2_SIZE
#define HAVE_ARCH_PICK_MMAP_LAYOUT
@@ -161,6 +161,7 @@ typedef struct thread_struct thread_struct;
#define INIT_THREAD { \
.ksp = sizeof(init_stack) + (unsigned long) &init_stack, \
.fpu.regs = (void *) init_task.thread.fpu.fprs, \
+ .last_break = 1, \
}
/*
@@ -177,7 +178,6 @@ typedef struct thread_struct thread_struct;
regs->psw.mask = PSW_USER_BITS | PSW_MASK_BA; \
regs->psw.addr = new_psw; \
regs->gprs[15] = new_stackp; \
- crst_table_downgrade(current->mm); \
execve_tail(); \
} while (0)
diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h
index e577f8533009..86a3796e9be8 100644
--- a/arch/s390/include/asm/qdio.h
+++ b/arch/s390/include/asm/qdio.h
@@ -325,7 +325,6 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
/**
* struct qdio_initialize - qdio initialization data
- * @cdev: associated ccw device
* @q_format: queue format
* @qdr_ac: feature flags to set
* @adapter_name: name for the adapter
@@ -341,12 +340,11 @@ typedef void qdio_handler_t(struct ccw_device *, unsigned int, int,
* @irq_poll: Data IRQ polling handler (NULL when not supported)
* @scan_threshold: # of in-use buffers that triggers scan on output queue
* @int_parm: interruption parameter
- * @input_sbal_addr_array: address of no_input_qs * 128 pointers
- * @output_sbal_addr_array: address of no_output_qs * 128 pointers
+ * @input_sbal_addr_array: per-queue array, each element points to 128 SBALs
+ * @output_sbal_addr_array: per-queue array, each element points to 128 SBALs
* @output_sbal_state_array: no_output_qs * 128 state info (for CQ or NULL)
*/
struct qdio_initialize {
- struct ccw_device *cdev;
unsigned char q_format;
unsigned char qdr_ac;
unsigned char adapter_name[8];
@@ -362,8 +360,8 @@ struct qdio_initialize {
void (*irq_poll)(struct ccw_device *cdev, unsigned long data);
unsigned int scan_threshold;
unsigned long int_parm;
- struct qdio_buffer **input_sbal_addr_array;
- struct qdio_buffer **output_sbal_addr_array;
+ struct qdio_buffer ***input_sbal_addr_array;
+ struct qdio_buffer ***output_sbal_addr_array;
struct qdio_outbuf_state *output_sbal_state_array;
};
@@ -408,8 +406,10 @@ int qdio_alloc_buffers(struct qdio_buffer **buf, unsigned int count);
void qdio_free_buffers(struct qdio_buffer **buf, unsigned int count);
void qdio_reset_buffers(struct qdio_buffer **buf, unsigned int count);
-extern int qdio_allocate(struct qdio_initialize *);
-extern int qdio_establish(struct qdio_initialize *);
+extern int qdio_allocate(struct ccw_device *cdev, unsigned int no_input_qs,
+ unsigned int no_output_qs);
+extern int qdio_establish(struct ccw_device *cdev,
+ struct qdio_initialize *init_data);
extern int qdio_activate(struct ccw_device *);
extern void qdio_release_aob(struct qaob *);
extern int do_QDIO(struct ccw_device *, unsigned int, int, unsigned int,
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index b241ddb67caf..534f212753d6 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -8,6 +8,7 @@
#include <linux/bits.h>
#include <uapi/asm/setup.h>
+#include <linux/build_bug.h>
#define EP_OFFSET 0x10008
#define EP_STRING "S390EP"
@@ -162,6 +163,12 @@ static inline unsigned long kaslr_offset(void)
return __kaslr_offset;
}
+static inline u32 gen_lpswe(unsigned long addr)
+{
+ BUILD_BUG_ON(addr > 0xfff);
+ return 0xb2b20000 | addr;
+}
+
#else /* __ASSEMBLY__ */
#define IPL_DEVICE (IPL_DEVICE_OFFSET)
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index b157a81fb977..231a51e870fe 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -34,6 +34,7 @@ extern int smp_vcpu_scheduled(int cpu);
extern void smp_yield_cpu(int cpu);
extern void smp_cpu_set_polarization(int cpu, int val);
extern int smp_cpu_get_polarization(int cpu);
+extern int smp_cpu_get_cpu_address(int cpu);
extern void smp_fill_possible_mask(void);
extern void smp_detect_cpus(void);
diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h
index cca406fdbe51..fbb507504a3b 100644
--- a/arch/s390/include/asm/topology.h
+++ b/arch/s390/include/asm/topology.h
@@ -16,8 +16,8 @@ struct cpu_topology_s390 {
unsigned short socket_id;
unsigned short book_id;
unsigned short drawer_id;
- unsigned short node_id;
unsigned short dedicated : 1;
+ int booted_cores;
cpumask_t thread_mask;
cpumask_t core_mask;
cpumask_t book_mask;
@@ -25,7 +25,6 @@ struct cpu_topology_s390 {
};
extern struct cpu_topology_s390 cpu_topology[NR_CPUS];
-extern cpumask_t cpus_with_topology;
#define topology_physical_package_id(cpu) (cpu_topology[cpu].socket_id)
#define topology_thread_id(cpu) (cpu_topology[cpu].thread_id)
@@ -37,6 +36,7 @@ extern cpumask_t cpus_with_topology;
#define topology_drawer_id(cpu) (cpu_topology[cpu].drawer_id)
#define topology_drawer_cpumask(cpu) (&cpu_topology[cpu].drawer_mask)
#define topology_cpu_dedicated(cpu) (cpu_topology[cpu].dedicated)
+#define topology_booted_cores(cpu) (cpu_topology[cpu].booted_cores)
#define mc_capable() 1
@@ -45,6 +45,7 @@ int topology_cpu_init(struct cpu *);
int topology_set_cpu_management(int fc);
void topology_schedule_update(void);
void store_topology(struct sysinfo_15_1_x *info);
+void update_cpu_masks(void);
void topology_expect_change(void);
const struct cpumask *cpu_coregroup_mask(int cpu);
@@ -54,6 +55,8 @@ static inline void topology_init_early(void) { }
static inline void topology_schedule_update(void) { }
static inline int topology_cpu_init(struct cpu *cpu) { return 0; }
static inline int topology_cpu_dedicated(int cpu_nr) { return 0; }
+static inline int topology_booted_cores(int cpu_nr) { return 1; }
+static inline void update_cpu_masks(void) { }
static inline void topology_expect_change(void) { }
#endif /* CONFIG_SCHED_TOPOLOGY */
@@ -71,19 +74,23 @@ static inline void topology_expect_change(void) { }
#define cpu_to_node cpu_to_node
static inline int cpu_to_node(int cpu)
{
- return cpu_topology[cpu].node_id;
+ return 0;
}
/* Returns a pointer to the cpumask of CPUs on node 'node'. */
#define cpumask_of_node cpumask_of_node
static inline const struct cpumask *cpumask_of_node(int node)
{
- return &node_to_cpumask_map[node];
+ return cpu_possible_mask;
}
#define pcibus_to_node(bus) __pcibus_to_node(bus)
#define node_distance(a, b) __node_distance(a, b)
+static inline int __node_distance(int a, int b)
+{
+ return 0;
+}
#else /* !CONFIG_NUMA */
diff --git a/arch/s390/kernel/.gitignore b/arch/s390/kernel/.gitignore
index c5f676c3c224..bbb90f92d051 100644
--- a/arch/s390/kernel/.gitignore
+++ b/arch/s390/kernel/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
vmlinux.lds
diff --git a/arch/s390/kernel/Makefile b/arch/s390/kernel/Makefile
index 33d4de233c5b..75f26d775027 100644
--- a/arch/s390/kernel/Makefile
+++ b/arch/s390/kernel/Makefile
@@ -54,7 +54,6 @@ CFLAGS_REMOVE_nospec-branch.o += $(CC_FLAGS_EXPOLINE)
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_SCHED_TOPOLOGY) += topology.o
-obj-$(CONFIG_HIBERNATION) += suspend.o swsusp.o
obj-$(CONFIG_AUDIT) += audit.o
compat-obj-$(CONFIG_AUDIT) += compat_audit.o
obj-$(CONFIG_COMPAT) += compat_linux.o compat_signal.o
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index ce33406cfe83..e80f0e6f5972 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -124,6 +124,8 @@ int main(void)
OFFSET(__LC_EXT_DAMAGE_CODE, lowcore, external_damage_code);
OFFSET(__LC_MCCK_FAIL_STOR_ADDR, lowcore, failing_storage_address);
OFFSET(__LC_LAST_BREAK, lowcore, breaking_event_addr);
+ OFFSET(__LC_RETURN_LPSWE, lowcore, return_lpswe);
+ OFFSET(__LC_RETURN_MCCK_LPSWE, lowcore, return_mcck_lpswe);
OFFSET(__LC_RST_OLD_PSW, lowcore, restart_old_psw);
OFFSET(__LC_EXT_OLD_PSW, lowcore, external_old_psw);
OFFSET(__LC_SVC_OLD_PSW, lowcore, svc_old_psw);
diff --git a/arch/s390/kernel/diag.c b/arch/s390/kernel/diag.c
index e9dac9a24d3f..61f2b0412345 100644
--- a/arch/s390/kernel/diag.c
+++ b/arch/s390/kernel/diag.c
@@ -84,7 +84,7 @@ static int show_diag_stat(struct seq_file *m, void *v)
static void *show_diag_stat_start(struct seq_file *m, loff_t *pos)
{
- return *pos <= nr_cpu_ids ? (void *)((unsigned long) *pos + 1) : NULL;
+ return *pos <= NR_DIAG_STAT ? (void *)((unsigned long) *pos + 1) : NULL;
}
static void *show_diag_stat_next(struct seq_file *m, void *v, loff_t *pos)
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 9205add8481d..3ae64914bd14 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -115,26 +115,29 @@ _LPP_OFFSET = __LC_LPP
.macro SWITCH_ASYNC savearea,timer
tmhh %r8,0x0001 # interrupting from user ?
- jnz 1f
+ jnz 2f
lgr %r14,%r9
+ cghi %r14,__LC_RETURN_LPSWE
+ je 0f
slg %r14,BASED(.Lcritical_start)
clg %r14,BASED(.Lcritical_length)
- jhe 0f
+ jhe 1f
+0:
lghi %r11,\savearea # inside critical section, do cleanup
brasl %r14,cleanup_critical
tmhh %r8,0x0001 # retest problem state after cleanup
- jnz 1f
-0: lg %r14,__LC_ASYNC_STACK # are we already on the target stack?
+ jnz 2f
+1: lg %r14,__LC_ASYNC_STACK # are we already on the target stack?
slgr %r14,%r15
srag %r14,%r14,STACK_SHIFT
- jnz 2f
+ jnz 3f
CHECK_STACK \savearea
aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- j 3f
-1: UPDATE_VTIME %r14,%r15,\timer
+ j 4f
+2: UPDATE_VTIME %r14,%r15,\timer
BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP
-2: lg %r15,__LC_ASYNC_STACK # load async stack
-3: la %r11,STACK_FRAME_OVERHEAD(%r15)
+3: lg %r15,__LC_ASYNC_STACK # load async stack
+4: la %r11,STACK_FRAME_OVERHEAD(%r15)
.endm
.macro UPDATE_VTIME w1,w2,enter_timer
@@ -401,7 +404,7 @@ ENTRY(system_call)
stpt __LC_EXIT_TIMER
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
lmg %r11,%r15,__PT_R11(%r11)
- lpswe __LC_RETURN_PSW
+ b __LC_RETURN_LPSWE(%r0)
.Lsysc_done:
#
@@ -608,43 +611,50 @@ ENTRY(pgm_check_handler)
BPOFF
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
lg %r10,__LC_LAST_BREAK
- lg %r12,__LC_CURRENT
+ srag %r11,%r10,12
+ jnz 0f
+ /* if __LC_LAST_BREAK is < 4096, it contains one of
+ * the lpswe addresses in lowcore. Set it to 1 (initial state)
+ * to prevent leaking that address to userspace.
+ */
+ lghi %r10,1
+0: lg %r12,__LC_CURRENT
lghi %r11,0
larl %r13,cleanup_critical
lmg %r8,%r9,__LC_PGM_OLD_PSW
tmhh %r8,0x0001 # test problem state bit
- jnz 2f # -> fault in user space
+ jnz 3f # -> fault in user space
#if IS_ENABLED(CONFIG_KVM)
# cleanup critical section for program checks in sie64a
lgr %r14,%r9
slg %r14,BASED(.Lsie_critical_start)
clg %r14,BASED(.Lsie_critical_length)
- jhe 0f
+ jhe 1f
lg %r14,__SF_SIE_CONTROL(%r15) # get control block pointer
ni __SIE_PROG0C+3(%r14),0xfe # no longer in SIE
lctlg %c1,%c1,__LC_USER_ASCE # load primary asce
larl %r9,sie_exit # skip forward to sie_exit
lghi %r11,_PIF_GUEST_FAULT
#endif
-0: tmhh %r8,0x4000 # PER bit set in old PSW ?
- jnz 1f # -> enabled, can't be a double fault
+1: tmhh %r8,0x4000 # PER bit set in old PSW ?
+ jnz 2f # -> enabled, can't be a double fault
tm __LC_PGM_ILC+3,0x80 # check for per exception
jnz .Lpgm_svcper # -> single stepped svc
-1: CHECK_STACK __LC_SAVE_AREA_SYNC
+2: CHECK_STACK __LC_SAVE_AREA_SYNC
aghi %r15,-(STACK_FRAME_OVERHEAD + __PT_SIZE)
- # CHECK_VMAP_STACK branches to stack_overflow or 4f
- CHECK_VMAP_STACK __LC_SAVE_AREA_SYNC,4f
-2: UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER
+ # CHECK_VMAP_STACK branches to stack_overflow or 5f
+ CHECK_VMAP_STACK __LC_SAVE_AREA_SYNC,5f
+3: UPDATE_VTIME %r14,%r15,__LC_SYNC_ENTER_TIMER
BPENTER __TI_flags(%r12),_TIF_ISOLATE_BP
lg %r15,__LC_KERNEL_STACK
lgr %r14,%r12
aghi %r14,__TASK_thread # pointer to thread_struct
lghi %r13,__LC_PGM_TDB
tm __LC_PGM_ILC+2,0x02 # check for transaction abort
- jz 3f
+ jz 4f
mvc __THREAD_trap_tdb(256,%r14),0(%r13)
-3: stg %r10,__THREAD_last_break(%r14)
-4: lgr %r13,%r11
+4: stg %r10,__THREAD_last_break(%r14)
+5: lgr %r13,%r11
la %r11,STACK_FRAME_OVERHEAD(%r15)
stmg %r0,%r7,__PT_R0(%r11)
# clear user controlled registers to prevent speculative use
@@ -663,14 +673,14 @@ ENTRY(pgm_check_handler)
stg %r13,__PT_FLAGS(%r11)
stg %r10,__PT_ARGS(%r11)
tm __LC_PGM_ILC+3,0x80 # check for per exception
- jz 5f
+ jz 6f
tmhh %r8,0x0001 # kernel per event ?
jz .Lpgm_kprobe
oi __PT_FLAGS+7(%r11),_PIF_PER_TRAP
mvc __THREAD_per_address(8,%r14),__LC_PER_ADDRESS
mvc __THREAD_per_cause(2,%r14),__LC_PER_CODE
mvc __THREAD_per_paid(1,%r14),__LC_PER_ACCESS_ID
-5: REENABLE_IRQS
+6: REENABLE_IRQS
xc __SF_BACKCHAIN(8,%r15),__SF_BACKCHAIN(%r15)
larl %r1,pgm_check_table
llgh %r10,__PT_INT_CODE+2(%r11)
@@ -775,7 +785,7 @@ ENTRY(io_int_handler)
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
.Lio_exit_kernel:
lmg %r11,%r15,__PT_R11(%r11)
- lpswe __LC_RETURN_PSW
+ b __LC_RETURN_LPSWE(%r0)
.Lio_done:
#
@@ -1214,7 +1224,7 @@ ENTRY(mcck_int_handler)
stpt __LC_EXIT_TIMER
mvc __VDSO_ECTG_BASE(16,%r14),__LC_EXIT_TIMER
0: lmg %r11,%r15,__PT_R11(%r11)
- lpswe __LC_RETURN_MCCK_PSW
+ b __LC_RETURN_MCCK_LPSWE
.Lmcck_panic:
lg %r15,__LC_NODAT_STACK
@@ -1271,6 +1281,8 @@ ENDPROC(stack_overflow)
#endif
ENTRY(cleanup_critical)
+ cghi %r9,__LC_RETURN_LPSWE
+ je .Lcleanup_lpswe
#if IS_ENABLED(CONFIG_KVM)
clg %r9,BASED(.Lcleanup_table_sie) # .Lsie_gmap
jl 0f
@@ -1424,6 +1436,7 @@ ENDPROC(cleanup_critical)
mvc __LC_RETURN_PSW(16),__PT_PSW(%r9)
mvc 0(64,%r11),__PT_R8(%r9)
lmg %r0,%r7,__PT_R0(%r9)
+.Lcleanup_lpswe:
1: lmg %r8,%r9,__LC_RETURN_PSW
BR_EX %r14,%r11
.Lcleanup_sysc_restore_insn:
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 6837affc19e8..4a71061974fd 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -144,6 +144,9 @@ static struct ipl_parameter_block *dump_block_ccw;
static struct sclp_ipl_info sclp_ipl_info;
+static bool reipl_fcp_clear;
+static bool reipl_ccw_clear;
+
static inline int __diag308(unsigned long subcode, void *addr)
{
register unsigned long _addr asm("0") = (unsigned long) addr;
@@ -691,6 +694,21 @@ static struct kobj_attribute sys_reipl_fcp_loadparm_attr =
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_fcp_loadparm_show,
reipl_fcp_loadparm_store);
+static ssize_t reipl_fcp_clear_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return sprintf(page, "%u\n", reipl_fcp_clear);
+}
+
+static ssize_t reipl_fcp_clear_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ if (strtobool(buf, &reipl_fcp_clear) < 0)
+ return -EINVAL;
+ return len;
+}
+
static struct attribute *reipl_fcp_attrs[] = {
&sys_reipl_fcp_device_attr.attr,
&sys_reipl_fcp_wwpn_attr.attr,
@@ -706,6 +724,9 @@ static struct attribute_group reipl_fcp_attr_group = {
.bin_attrs = reipl_fcp_bin_attrs,
};
+static struct kobj_attribute sys_reipl_fcp_clear_attr =
+ __ATTR(clear, 0644, reipl_fcp_clear_show, reipl_fcp_clear_store);
+
/* CCW reipl device attributes */
DEFINE_IPL_CCW_ATTR_RW(reipl_ccw, device, reipl_block_ccw->ccw);
@@ -741,16 +762,36 @@ static struct kobj_attribute sys_reipl_ccw_loadparm_attr =
__ATTR(loadparm, S_IRUGO | S_IWUSR, reipl_ccw_loadparm_show,
reipl_ccw_loadparm_store);
+static ssize_t reipl_ccw_clear_show(struct kobject *kobj,
+ struct kobj_attribute *attr, char *page)
+{
+ return sprintf(page, "%u\n", reipl_ccw_clear);
+}
+
+static ssize_t reipl_ccw_clear_store(struct kobject *kobj,
+ struct kobj_attribute *attr,
+ const char *buf, size_t len)
+{
+ if (strtobool(buf, &reipl_ccw_clear) < 0)
+ return -EINVAL;
+ return len;
+}
+
+static struct kobj_attribute sys_reipl_ccw_clear_attr =
+ __ATTR(clear, 0644, reipl_ccw_clear_show, reipl_ccw_clear_store);
+
static struct attribute *reipl_ccw_attrs_vm[] = {
&sys_reipl_ccw_device_attr.attr,
&sys_reipl_ccw_loadparm_attr.attr,
&sys_reipl_ccw_vmparm_attr.attr,
+ &sys_reipl_ccw_clear_attr.attr,
NULL,
};
static struct attribute *reipl_ccw_attrs_lpar[] = {
&sys_reipl_ccw_device_attr.attr,
&sys_reipl_ccw_loadparm_attr.attr,
+ &sys_reipl_ccw_clear_attr.attr,
NULL,
};
@@ -892,11 +933,17 @@ static void __reipl_run(void *unused)
switch (reipl_type) {
case IPL_TYPE_CCW:
diag308(DIAG308_SET, reipl_block_ccw);
- diag308(DIAG308_LOAD_CLEAR, NULL);
+ if (reipl_ccw_clear)
+ diag308(DIAG308_LOAD_CLEAR, NULL);
+ else
+ diag308(DIAG308_LOAD_NORMAL_DUMP, NULL);
break;
case IPL_TYPE_FCP:
diag308(DIAG308_SET, reipl_block_fcp);
- diag308(DIAG308_LOAD_CLEAR, NULL);
+ if (reipl_fcp_clear)
+ diag308(DIAG308_LOAD_CLEAR, NULL);
+ else
+ diag308(DIAG308_LOAD_NORMAL, NULL);
break;
case IPL_TYPE_NSS:
diag308(DIAG308_SET, reipl_block_nss);
@@ -1008,11 +1055,16 @@ static int __init reipl_fcp_init(void)
}
rc = sysfs_create_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
- if (rc) {
- kset_unregister(reipl_fcp_kset);
- free_page((unsigned long) reipl_block_fcp);
- return rc;
- }
+ if (rc)
+ goto out1;
+
+ if (test_facility(141)) {
+ rc = sysfs_create_file(&reipl_fcp_kset->kobj,
+ &sys_reipl_fcp_clear_attr.attr);
+ if (rc)
+ goto out2;
+ } else
+ reipl_fcp_clear = true;
if (ipl_info.type == IPL_TYPE_FCP) {
memcpy(reipl_block_fcp, &ipl_block, sizeof(ipl_block));
@@ -1032,6 +1084,13 @@ static int __init reipl_fcp_init(void)
}
reipl_capabilities |= IPL_TYPE_FCP;
return 0;
+
+out2:
+ sysfs_remove_group(&reipl_fcp_kset->kobj, &reipl_fcp_attr_group);
+out1:
+ kset_unregister(reipl_fcp_kset);
+ free_page((unsigned long) reipl_block_fcp);
+ return rc;
}
static int __init reipl_type_init(void)
diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c
index 8371855042dc..3514420f0259 100644
--- a/arch/s390/kernel/irq.c
+++ b/arch/s390/kernel/irq.c
@@ -95,14 +95,6 @@ static const struct irq_class irqclass_sub_desc[] = {
{.irq = CPU_RST, .name = "RST", .desc = "[CPU] CPU Restart"},
};
-void __init init_IRQ(void)
-{
- BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS);
- init_cio_interrupts();
- init_airq_interrupts();
- init_ext_interrupts();
-}
-
void do_IRQ(struct pt_regs *regs, int irq)
{
struct pt_regs *old_regs;
@@ -294,12 +286,7 @@ static irqreturn_t do_ext_interrupt(int irq, void *dummy)
return IRQ_HANDLED;
}
-static struct irqaction external_interrupt = {
- .name = "EXT",
- .handler = do_ext_interrupt,
-};
-
-void __init init_ext_interrupts(void)
+static void __init init_ext_interrupts(void)
{
int idx;
@@ -308,7 +295,16 @@ void __init init_ext_interrupts(void)
irq_set_chip_and_handler(EXT_INTERRUPT,
&dummy_irq_chip, handle_percpu_irq);
- setup_irq(EXT_INTERRUPT, &external_interrupt);
+ if (request_irq(EXT_INTERRUPT, do_ext_interrupt, 0, "EXT", NULL))
+ panic("Failed to register EXT interrupt\n");
+}
+
+void __init init_IRQ(void)
+{
+ BUILD_BUG_ON(ARRAY_SIZE(irqclass_sub_desc) != NR_ARCH_IRQS);
+ init_cio_interrupts();
+ init_airq_interrupts();
+ init_ext_interrupts();
}
static DEFINE_SPINLOCK(irq_subclass_lock);
diff --git a/arch/s390/kernel/machine_kexec.c b/arch/s390/kernel/machine_kexec.c
index cb8b1cc285c9..3a854cb5a4c6 100644
--- a/arch/s390/kernel/machine_kexec.c
+++ b/arch/s390/kernel/machine_kexec.c
@@ -14,7 +14,6 @@
#include <linux/reboot.h>
#include <linux/ftrace.h>
#include <linux/debug_locks.h>
-#include <linux/suspend.h>
#include <asm/cio.h>
#include <asm/setup.h>
#include <asm/pgtable.h>
@@ -39,36 +38,6 @@ extern const unsigned long long relocate_kernel_len;
#ifdef CONFIG_CRASH_DUMP
/*
- * PM notifier callback for kdump
- */
-static int machine_kdump_pm_cb(struct notifier_block *nb, unsigned long action,
- void *ptr)
-{
- switch (action) {
- case PM_SUSPEND_PREPARE:
- case PM_HIBERNATION_PREPARE:
- if (kexec_crash_image)
- arch_kexec_unprotect_crashkres();
- break;
- case PM_POST_SUSPEND:
- case PM_POST_HIBERNATION:
- if (kexec_crash_image)
- arch_kexec_protect_crashkres();
- break;
- default:
- return NOTIFY_DONE;
- }
- return NOTIFY_OK;
-}
-
-static int __init machine_kdump_pm_init(void)
-{
- pm_notifier(machine_kdump_pm_cb, 0);
- return 0;
-}
-arch_initcall(machine_kdump_pm_init);
-
-/*
* Reset the system, copy boot CPU registers to absolute zero,
* and jump to the kdump image
*/
diff --git a/arch/s390/kernel/perf_cpum_cf_events.c b/arch/s390/kernel/perf_cpum_cf_events.c
index 8b33e03e47b8..1e3df52b2b65 100644
--- a/arch/s390/kernel/perf_cpum_cf_events.c
+++ b/arch/s390/kernel/perf_cpum_cf_events.c
@@ -238,6 +238,64 @@ CPUMF_EVENT_ATTR(cf_z14, TX_C_TABORT_SPECIAL, 0x00f5);
CPUMF_EVENT_ATTR(cf_z14, MT_DIAG_CYCLES_ONE_THR_ACTIVE, 0x01c0);
CPUMF_EVENT_ATTR(cf_z14, MT_DIAG_CYCLES_TWO_THR_ACTIVE, 0x01c1);
+CPUMF_EVENT_ATTR(cf_z15, L1D_RO_EXCL_WRITES, 0x0080);
+CPUMF_EVENT_ATTR(cf_z15, DTLB2_WRITES, 0x0081);
+CPUMF_EVENT_ATTR(cf_z15, DTLB2_MISSES, 0x0082);
+CPUMF_EVENT_ATTR(cf_z15, DTLB2_HPAGE_WRITES, 0x0083);
+CPUMF_EVENT_ATTR(cf_z15, DTLB2_GPAGE_WRITES, 0x0084);
+CPUMF_EVENT_ATTR(cf_z15, L1D_L2D_SOURCED_WRITES, 0x0085);
+CPUMF_EVENT_ATTR(cf_z15, ITLB2_WRITES, 0x0086);
+CPUMF_EVENT_ATTR(cf_z15, ITLB2_MISSES, 0x0087);
+CPUMF_EVENT_ATTR(cf_z15, L1I_L2I_SOURCED_WRITES, 0x0088);
+CPUMF_EVENT_ATTR(cf_z15, TLB2_PTE_WRITES, 0x0089);
+CPUMF_EVENT_ATTR(cf_z15, TLB2_CRSTE_WRITES, 0x008a);
+CPUMF_EVENT_ATTR(cf_z15, TLB2_ENGINES_BUSY, 0x008b);
+CPUMF_EVENT_ATTR(cf_z15, TX_C_TEND, 0x008c);
+CPUMF_EVENT_ATTR(cf_z15, TX_NC_TEND, 0x008d);
+CPUMF_EVENT_ATTR(cf_z15, L1C_TLB2_MISSES, 0x008f);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES, 0x0090);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_MEMORY_SOURCED_WRITES, 0x0091);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_IV, 0x0092);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES, 0x0093);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_MEMORY_SOURCED_WRITES, 0x0094);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES_IV, 0x0095);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES, 0x0096);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES, 0x0097);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV, 0x0098);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES, 0x0099);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_MEMORY_SOURCED_WRITES, 0x009a);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES_IV, 0x009b);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONDRAWER_L4_SOURCED_WRITES, 0x009c);
+CPUMF_EVENT_ATTR(cf_z15, L1D_OFFDRAWER_L4_SOURCED_WRITES, 0x009d);
+CPUMF_EVENT_ATTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_RO, 0x009e);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES, 0x00a2);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_MEMORY_SOURCED_WRITES, 0x00a3);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES_IV, 0x00a4);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES, 0x00a5);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_MEMORY_SOURCED_WRITES, 0x00a6);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES_IV, 0x00a7);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES, 0x00a8);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES, 0x00a9);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV, 0x00aa);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES, 0x00ab);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_MEMORY_SOURCED_WRITES, 0x00ac);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES_IV, 0x00ad);
+CPUMF_EVENT_ATTR(cf_z15, L1I_ONDRAWER_L4_SOURCED_WRITES, 0x00ae);
+CPUMF_EVENT_ATTR(cf_z15, L1I_OFFDRAWER_L4_SOURCED_WRITES, 0x00af);
+CPUMF_EVENT_ATTR(cf_z15, BCD_DFP_EXECUTION_SLOTS, 0x00e0);
+CPUMF_EVENT_ATTR(cf_z15, VX_BCD_EXECUTION_SLOTS, 0x00e1);
+CPUMF_EVENT_ATTR(cf_z15, DECIMAL_INSTRUCTIONS, 0x00e2);
+CPUMF_EVENT_ATTR(cf_z15, LAST_HOST_TRANSLATIONS, 0x00e8);
+CPUMF_EVENT_ATTR(cf_z15, TX_NC_TABORT, 0x00f3);
+CPUMF_EVENT_ATTR(cf_z15, TX_C_TABORT_NO_SPECIAL, 0x00f4);
+CPUMF_EVENT_ATTR(cf_z15, TX_C_TABORT_SPECIAL, 0x00f5);
+CPUMF_EVENT_ATTR(cf_z15, DFLT_ACCESS, 0x00f7);
+CPUMF_EVENT_ATTR(cf_z15, DFLT_CYCLES, 0x00fc);
+CPUMF_EVENT_ATTR(cf_z15, DFLT_CC, 0x00108);
+CPUMF_EVENT_ATTR(cf_z15, DFLT_CCERROR, 0x00109);
+CPUMF_EVENT_ATTR(cf_z15, MT_DIAG_CYCLES_ONE_THR_ACTIVE, 0x01c0);
+CPUMF_EVENT_ATTR(cf_z15, MT_DIAG_CYCLES_TWO_THR_ACTIVE, 0x01c1);
+
static struct attribute *cpumcf_fvn1_pmu_event_attr[] __initdata = {
CPUMF_EVENT_PTR(cf_fvn1, CPU_CYCLES),
CPUMF_EVENT_PTR(cf_fvn1, INSTRUCTIONS),
@@ -516,6 +574,67 @@ static struct attribute *cpumcf_z14_pmu_event_attr[] __initdata = {
NULL,
};
+static struct attribute *cpumcf_z15_pmu_event_attr[] __initdata = {
+ CPUMF_EVENT_PTR(cf_z15, L1D_RO_EXCL_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, DTLB2_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, DTLB2_MISSES),
+ CPUMF_EVENT_PTR(cf_z15, DTLB2_HPAGE_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, DTLB2_GPAGE_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_L2D_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, ITLB2_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, ITLB2_MISSES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_L2I_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, TLB2_PTE_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, TLB2_CRSTE_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, TLB2_ENGINES_BUSY),
+ CPUMF_EVENT_PTR(cf_z15, TX_C_TEND),
+ CPUMF_EVENT_PTR(cf_z15, TX_NC_TEND),
+ CPUMF_EVENT_PTR(cf_z15, L1C_TLB2_MISSES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCLUSTER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFCLUSTER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONDRAWER_L4_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_OFFDRAWER_L4_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1D_ONCHIP_L3_SOURCED_WRITES_RO),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCHIP_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONCLUSTER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFCLUSTER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_MEMORY_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L3_SOURCED_WRITES_IV),
+ CPUMF_EVENT_PTR(cf_z15, L1I_ONDRAWER_L4_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, L1I_OFFDRAWER_L4_SOURCED_WRITES),
+ CPUMF_EVENT_PTR(cf_z15, BCD_DFP_EXECUTION_SLOTS),
+ CPUMF_EVENT_PTR(cf_z15, VX_BCD_EXECUTION_SLOTS),
+ CPUMF_EVENT_PTR(cf_z15, DECIMAL_INSTRUCTIONS),
+ CPUMF_EVENT_PTR(cf_z15, LAST_HOST_TRANSLATIONS),
+ CPUMF_EVENT_PTR(cf_z15, TX_NC_TABORT),
+ CPUMF_EVENT_PTR(cf_z15, TX_C_TABORT_NO_SPECIAL),
+ CPUMF_EVENT_PTR(cf_z15, TX_C_TABORT_SPECIAL),
+ CPUMF_EVENT_PTR(cf_z15, DFLT_ACCESS),
+ CPUMF_EVENT_PTR(cf_z15, DFLT_CYCLES),
+ CPUMF_EVENT_PTR(cf_z15, DFLT_CC),
+ CPUMF_EVENT_PTR(cf_z15, DFLT_CCERROR),
+ CPUMF_EVENT_PTR(cf_z15, MT_DIAG_CYCLES_ONE_THR_ACTIVE),
+ CPUMF_EVENT_PTR(cf_z15, MT_DIAG_CYCLES_TWO_THR_ACTIVE),
+ NULL,
+};
+
/* END: CPUM_CF COUNTER DEFINITIONS ===================================== */
static struct attribute_group cpumcf_pmu_events_group = {
@@ -624,9 +743,11 @@ __init const struct attribute_group **cpumf_cf_event_group(void)
break;
case 0x3906:
case 0x3907:
+ model = cpumcf_z14_pmu_event_attr;
+ break;
case 0x8561:
case 0x8562:
- model = cpumcf_z14_pmu_event_attr;
+ model = cpumcf_z15_pmu_event_attr;
break;
default:
model = none;
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c
index b095b1c78987..85a711d783eb 100644
--- a/arch/s390/kernel/perf_cpum_sf.c
+++ b/arch/s390/kernel/perf_cpum_sf.c
@@ -372,28 +372,33 @@ static void deallocate_buffers(struct cpu_hw_sf *cpuhw)
static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc)
{
- unsigned long n_sdb, freq, factor;
+ unsigned long n_sdb, freq;
size_t sample_size;
/* Calculate sampling buffers using 4K pages
*
- * 1. Determine the sample data size which depends on the used
- * sampling functions, for example, basic-sampling or
- * basic-sampling with diagnostic-sampling.
+ * 1. The sampling size is 32 bytes for basic sampling. This size
+ * is the same for all machine types. Diagnostic
+ * sampling uses auxlilary data buffer setup which provides the
+ * memory for SDBs using linux common code auxiliary trace
+ * setup.
*
- * 2. Use the sampling frequency as input. The sampling buffer is
- * designed for almost one second. This can be adjusted through
- * the "factor" variable.
- * In any case, alloc_sampling_buffer() sets the Alert Request
+ * 2. Function alloc_sampling_buffer() sets the Alert Request
* Control indicator to trigger a measurement-alert to harvest
- * sample-data-blocks (sdb).
+ * sample-data-blocks (SDB). This is done per SDB. This
+ * measurement alert interrupt fires quick enough to handle
+ * one SDB, on very high frequency and work loads there might
+ * be 2 to 3 SBDs available for sample processing.
+ * Currently there is no need for setup alert request on every
+ * n-th page. This is counterproductive as one IRQ triggers
+ * a very high number of samples to be processed at one IRQ.
*
- * 3. Compute the number of sample-data-blocks and ensure a minimum
- * of CPUM_SF_MIN_SDB. Also ensure the upper limit does not
- * exceed a "calculated" maximum. The symbolic maximum is
- * designed for basic-sampling only and needs to be increased if
- * diagnostic-sampling is active.
- * See also the remarks for these symbolic constants.
+ * 3. Use the sampling frequency as input.
+ * Compute the number of SDBs and ensure a minimum
+ * of CPUM_SF_MIN_SDB. Depending on frequency add some more
+ * SDBs to handle a higher sampling rate.
+ * Use a minimum of CPUM_SF_MIN_SDB and allow for 100 samples
+ * (one SDB) for every 10000 HZ frequency increment.
*
* 4. Compute the number of sample-data-block-tables (SDBT) and
* ensure a minimum of CPUM_SF_MIN_SDBT (one table can manage up
@@ -401,10 +406,7 @@ static int allocate_buffers(struct cpu_hw_sf *cpuhw, struct hw_perf_event *hwc)
*/
sample_size = sizeof(struct hws_basic_entry);
freq = sample_rate_to_freq(&cpuhw->qsi, SAMPL_RATE(hwc));
- factor = 1;
- n_sdb = DIV_ROUND_UP(freq, factor * ((PAGE_SIZE-64) / sample_size));
- if (n_sdb < CPUM_SF_MIN_SDB)
- n_sdb = CPUM_SF_MIN_SDB;
+ n_sdb = CPUM_SF_MIN_SDB + DIV_ROUND_UP(freq, 10000);
/* If there is already a sampling buffer allocated, it is very likely
* that the sampling facility is enabled too. If the event to be
@@ -1576,6 +1578,7 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw)
unsigned long range = 0, size;
unsigned long long overflow = 0;
struct perf_output_handle *handle = &cpuhw->handle;
+ unsigned long num_sdb;
aux = perf_get_aux(handle);
if (WARN_ON_ONCE(!aux))
@@ -1587,13 +1590,14 @@ static void hw_collect_aux(struct cpu_hw_sf *cpuhw)
size >> PAGE_SHIFT);
perf_aux_output_end(handle, size);
+ num_sdb = aux->sfb.num_sdb;
while (!done) {
/* Get an output handle */
aux = perf_aux_output_begin(handle, cpuhw->event);
if (handle->size == 0) {
pr_err("The AUX buffer with %lu pages for the "
"diagnostic-sampling mode is full\n",
- aux->sfb.num_sdb);
+ num_sdb);
debug_sprintf_event(sfdbg, 1,
"%s: AUX buffer used up\n",
__func__);
diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c
index 6ccef5f29761..eb6e23ad15a2 100644
--- a/arch/s390/kernel/process.c
+++ b/arch/s390/kernel/process.c
@@ -106,6 +106,7 @@ int copy_thread_tls(unsigned long clone_flags, unsigned long new_stackp,
p->thread.system_timer = 0;
p->thread.hardirq_timer = 0;
p->thread.softirq_timer = 0;
+ p->thread.last_break = 1;
frame->sf.back_chain = 0;
/* new return point is ret_from_fork */
diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c
index 6ebc2117c66c..c92d04f876cb 100644
--- a/arch/s390/kernel/processor.c
+++ b/arch/s390/kernel/processor.c
@@ -151,10 +151,35 @@ static void show_cpu_summary(struct seq_file *m, void *v)
}
}
+static void show_cpu_topology(struct seq_file *m, unsigned long n)
+{
+#ifdef CONFIG_SCHED_TOPOLOGY
+ seq_printf(m, "physical id : %d\n", topology_physical_package_id(n));
+ seq_printf(m, "core id : %d\n", topology_core_id(n));
+ seq_printf(m, "book id : %d\n", topology_book_id(n));
+ seq_printf(m, "drawer id : %d\n", topology_drawer_id(n));
+ seq_printf(m, "dedicated : %d\n", topology_cpu_dedicated(n));
+ seq_printf(m, "address : %d\n", smp_cpu_get_cpu_address(n));
+ seq_printf(m, "siblings : %d\n", cpumask_weight(topology_core_cpumask(n)));
+ seq_printf(m, "cpu cores : %d\n", topology_booted_cores(n));
+#endif /* CONFIG_SCHED_TOPOLOGY */
+}
+
+static void show_cpu_ids(struct seq_file *m, unsigned long n)
+{
+ struct cpuid *id = &per_cpu(cpu_info.cpu_id, n);
+
+ seq_printf(m, "version : %02X\n", id->version);
+ seq_printf(m, "identification : %06X\n", id->ident);
+ seq_printf(m, "machine : %04X\n", id->machine);
+}
+
static void show_cpu_mhz(struct seq_file *m, unsigned long n)
{
struct cpu_info *c = per_cpu_ptr(&cpu_info, n);
+ if (!machine_has_cpu_mhz)
+ return;
seq_printf(m, "cpu MHz dynamic : %d\n", c->cpu_mhz_dynamic);
seq_printf(m, "cpu MHz static : %d\n", c->cpu_mhz_static);
}
@@ -165,12 +190,13 @@ static void show_cpu_mhz(struct seq_file *m, unsigned long n)
static int show_cpuinfo(struct seq_file *m, void *v)
{
unsigned long n = (unsigned long) v - 1;
+ unsigned long first = cpumask_first(cpu_online_mask);
- if (!n)
+ if (n == first)
show_cpu_summary(m, v);
- if (!machine_has_cpu_mhz)
- return 0;
seq_printf(m, "\ncpu number : %ld\n", n);
+ show_cpu_topology(m, n);
+ show_cpu_ids(m, n);
show_cpu_mhz(m, n);
return 0;
}
@@ -179,6 +205,8 @@ static inline void *c_update(loff_t *pos)
{
if (*pos)
*pos = cpumask_next(*pos - 1, cpu_online_mask);
+ else
+ *pos = cpumask_first(cpu_online_mask);
return *pos < nr_cpu_ids ? (void *)*pos + 1 : NULL;
}
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 1423090a2259..36445dd40fdb 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -73,6 +73,7 @@
#include <asm/nospec-branch.h>
#include <asm/mem_detect.h>
#include <asm/uv.h>
+#include <asm/asm-offsets.h>
#include "entry.h"
/*
@@ -446,6 +447,8 @@ static void __init setup_lowcore_dat_off(void)
lc->spinlock_index = 0;
arch_spin_lock_setup(0);
lc->br_r1_trampoline = 0x07f1; /* br %r1 */
+ lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW);
+ lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW);
set_prefix((u32)(unsigned long) lc);
lowcore_ptr[0] = lc;
@@ -789,6 +792,7 @@ static void __init memblock_add_mem_detect_info(void)
memblock_physmem_add(start, end - start);
}
memblock_set_bottom_up(false);
+ memblock_set_node(0, ULONG_MAX, &memblock.memory, 0);
memblock_dump_all();
}
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c
index e6fca5498e1f..b295090e2ce6 100644
--- a/arch/s390/kernel/signal.c
+++ b/arch/s390/kernel/signal.c
@@ -487,7 +487,7 @@ void do_signal(struct pt_regs *regs)
regs->gprs[2] = -EINTR;
break;
}
- /* fallthrough */
+ fallthrough;
case -ERESTARTNOINTR:
regs->gprs[2] = regs->orig_gpr2;
regs->psw.addr =
@@ -514,7 +514,7 @@ void do_signal(struct pt_regs *regs)
case -ERESTART_RESTARTBLOCK:
/* Restart with sys_restart_syscall */
regs->int_code = __NR_restart_syscall;
- /* fallthrough */
+ fallthrough;
case -ERESTARTNOHAND:
case -ERESTARTSYS:
case -ERESTARTNOINTR:
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index a08bd2522dd9..7eaabbab2213 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -212,6 +212,8 @@ static int pcpu_alloc_lowcore(struct pcpu *pcpu, int cpu)
lc->spinlock_lockval = arch_spin_lockval(cpu);
lc->spinlock_index = 0;
lc->br_r1_trampoline = 0x07f1; /* br %r1 */
+ lc->return_lpswe = gen_lpswe(__LC_RETURN_PSW);
+ lc->return_mcck_lpswe = gen_lpswe(__LC_RETURN_MCCK_PSW);
if (nmi_alloc_per_cpu(lc))
goto out_async;
if (vdso_alloc_per_cpu(lc))
@@ -701,6 +703,11 @@ int smp_cpu_get_polarization(int cpu)
return pcpu_devices[cpu].polarization;
}
+int smp_cpu_get_cpu_address(int cpu)
+{
+ return pcpu_devices[cpu].address;
+}
+
static void __ref smp_get_core_info(struct sclp_core_info *info, int early)
{
static int use_sigp_detection;
@@ -851,12 +858,13 @@ static void smp_init_secondary(void)
init_cpu_timer();
vtime_init();
pfault_init();
- notify_cpu_starting(smp_processor_id());
+ notify_cpu_starting(cpu);
if (topology_cpu_dedicated(cpu))
set_cpu_flag(CIF_DEDICATED_CPU);
else
clear_cpu_flag(CIF_DEDICATED_CPU);
- set_cpu_online(smp_processor_id(), true);
+ set_cpu_online(cpu, true);
+ update_cpu_masks();
inc_irq_stat(CPU_RST);
local_irq_enable();
cpu_startup_entry(CPUHP_AP_ONLINE_IDLE);
@@ -928,6 +936,7 @@ int __cpu_disable(void)
/* Handle possible pending IPIs */
smp_handle_ext_call();
set_cpu_online(smp_processor_id(), false);
+ update_cpu_masks();
/* Disable pseudo page faults on this cpu. */
pfault_fini();
/* Disable interrupt sources via control register. */
diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c
deleted file mode 100644
index 75b7b307946e..000000000000
--- a/arch/s390/kernel/suspend.c
+++ /dev/null
@@ -1,240 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Suspend support specific for s390.
- *
- * Copyright IBM Corp. 2009
- *
- * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com>
- */
-
-#include <linux/pfn.h>
-#include <linux/suspend.h>
-#include <linux/mm.h>
-#include <linux/pci.h>
-#include <asm/ctl_reg.h>
-#include <asm/ipl.h>
-#include <asm/cio.h>
-#include <asm/sections.h>
-#include "entry.h"
-
-/*
- * The restore of the saved pages in an hibernation image will set
- * the change and referenced bits in the storage key for each page.
- * Overindication of the referenced bits after an hibernation cycle
- * does not cause any harm but the overindication of the change bits
- * would cause trouble.
- * Use the ARCH_SAVE_PAGE_KEYS hooks to save the storage key of each
- * page to the most significant byte of the associated page frame
- * number in the hibernation image.
- */
-
-/*
- * Key storage is allocated as a linked list of pages.
- * The size of the keys array is (PAGE_SIZE - sizeof(long))
- */
-struct page_key_data {
- struct page_key_data *next;
- unsigned char data[];
-};
-
-#define PAGE_KEY_DATA_SIZE (PAGE_SIZE - sizeof(struct page_key_data *))
-
-static struct page_key_data *page_key_data;
-static struct page_key_data *page_key_rp, *page_key_wp;
-static unsigned long page_key_rx, page_key_wx;
-unsigned long suspend_zero_pages;
-
-/*
- * For each page in the hibernation image one additional byte is
- * stored in the most significant byte of the page frame number.
- * On suspend no additional memory is required but on resume the
- * keys need to be memorized until the page data has been restored.
- * Only then can the storage keys be set to their old state.
- */
-unsigned long page_key_additional_pages(unsigned long pages)
-{
- return DIV_ROUND_UP(pages, PAGE_KEY_DATA_SIZE);
-}
-
-/*
- * Free page_key_data list of arrays.
- */
-void page_key_free(void)
-{
- struct page_key_data *pkd;
-
- while (page_key_data) {
- pkd = page_key_data;
- page_key_data = pkd->next;
- free_page((unsigned long) pkd);
- }
-}
-
-/*
- * Allocate page_key_data list of arrays with enough room to store
- * one byte for each page in the hibernation image.
- */
-int page_key_alloc(unsigned long pages)
-{
- struct page_key_data *pk;
- unsigned long size;
-
- size = DIV_ROUND_UP(pages, PAGE_KEY_DATA_SIZE);
- while (size--) {
- pk = (struct page_key_data *) get_zeroed_page(GFP_KERNEL);
- if (!pk) {
- page_key_free();
- return -ENOMEM;
- }
- pk->next = page_key_data;
- page_key_data = pk;
- }
- page_key_rp = page_key_wp = page_key_data;
- page_key_rx = page_key_wx = 0;
- return 0;
-}
-
-/*
- * Save the storage key into the upper 8 bits of the page frame number.
- */
-void page_key_read(unsigned long *pfn)
-{
- struct page *page;
- unsigned long addr;
- unsigned char key;
-
- page = pfn_to_page(*pfn);
- addr = (unsigned long) page_address(page);
- key = (unsigned char) page_get_storage_key(addr) & 0x7f;
- if (arch_test_page_nodat(page))
- key |= 0x80;
- *(unsigned char *) pfn = key;
-}
-
-/*
- * Extract the storage key from the upper 8 bits of the page frame number
- * and store it in the page_key_data list of arrays.
- */
-void page_key_memorize(unsigned long *pfn)
-{
- page_key_wp->data[page_key_wx] = *(unsigned char *) pfn;
- *(unsigned char *) pfn = 0;
- if (++page_key_wx < PAGE_KEY_DATA_SIZE)
- return;
- page_key_wp = page_key_wp->next;
- page_key_wx = 0;
-}
-
-/*
- * Get the next key from the page_key_data list of arrays and set the
- * storage key of the page referred by @address. If @address refers to
- * a "safe" page the swsusp_arch_resume code will transfer the storage
- * key from the buffer page to the original page.
- */
-void page_key_write(void *address)
-{
- struct page *page;
- unsigned char key;
-
- key = page_key_rp->data[page_key_rx];
- page_set_storage_key((unsigned long) address, key & 0x7f, 0);
- page = virt_to_page(address);
- if (key & 0x80)
- arch_set_page_nodat(page, 0);
- else
- arch_set_page_dat(page, 0);
- if (++page_key_rx >= PAGE_KEY_DATA_SIZE)
- return;
- page_key_rp = page_key_rp->next;
- page_key_rx = 0;
-}
-
-int pfn_is_nosave(unsigned long pfn)
-{
- unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin));
- unsigned long nosave_end_pfn = PFN_DOWN(__pa(&__nosave_end));
- unsigned long end_rodata_pfn = PFN_DOWN(__pa(__end_rodata)) - 1;
- unsigned long stext_pfn = PFN_DOWN(__pa(_stext));
-
- /* Always save lowcore pages (LC protection might be enabled). */
- if (pfn <= LC_PAGES)
- return 0;
- if (pfn >= nosave_begin_pfn && pfn < nosave_end_pfn)
- return 1;
- /* Skip memory holes and read-only pages (DCSS, ...). */
- if (pfn >= stext_pfn && pfn <= end_rodata_pfn)
- return 0;
- if (tprot(PFN_PHYS(pfn)))
- return 1;
- return 0;
-}
-
-/*
- * PM notifier callback for suspend
- */
-static int suspend_pm_cb(struct notifier_block *nb, unsigned long action,
- void *ptr)
-{
- switch (action) {
- case PM_SUSPEND_PREPARE:
- case PM_HIBERNATION_PREPARE:
- suspend_zero_pages = __get_free_pages(GFP_KERNEL, LC_ORDER);
- if (!suspend_zero_pages)
- return NOTIFY_BAD;
- break;
- case PM_POST_SUSPEND:
- case PM_POST_HIBERNATION:
- free_pages(suspend_zero_pages, LC_ORDER);
- break;
- default:
- return NOTIFY_DONE;
- }
- return NOTIFY_OK;
-}
-
-static int __init suspend_pm_init(void)
-{
- pm_notifier(suspend_pm_cb, 0);
- return 0;
-}
-arch_initcall(suspend_pm_init);
-
-void save_processor_state(void)
-{
- /* swsusp_arch_suspend() actually saves all cpu register contents.
- * Machine checks must be disabled since swsusp_arch_suspend() stores
- * register contents to their lowcore save areas. That's the same
- * place where register contents on machine checks would be saved.
- * To avoid register corruption disable machine checks.
- * We must also disable machine checks in the new psw mask for
- * program checks, since swsusp_arch_suspend() may generate program
- * checks. Disabling machine checks for all other new psw masks is
- * just paranoia.
- */
- local_mcck_disable();
- /* Disable lowcore protection */
- __ctl_clear_bit(0,28);
- S390_lowcore.external_new_psw.mask &= ~PSW_MASK_MCHECK;
- S390_lowcore.svc_new_psw.mask &= ~PSW_MASK_MCHECK;
- S390_lowcore.io_new_psw.mask &= ~PSW_MASK_MCHECK;
- S390_lowcore.program_new_psw.mask &= ~PSW_MASK_MCHECK;
-}
-
-void restore_processor_state(void)
-{
- S390_lowcore.external_new_psw.mask |= PSW_MASK_MCHECK;
- S390_lowcore.svc_new_psw.mask |= PSW_MASK_MCHECK;
- S390_lowcore.io_new_psw.mask |= PSW_MASK_MCHECK;
- S390_lowcore.program_new_psw.mask |= PSW_MASK_MCHECK;
- /* Enable lowcore protection */
- __ctl_set_bit(0,28);
- local_mcck_enable();
-}
-
-/* Called at the end of swsusp_arch_resume */
-void s390_early_resume(void)
-{
- lgr_info_log();
- channel_subsystem_reinit();
- zpci_rescan();
-}
diff --git a/arch/s390/kernel/swsusp.S b/arch/s390/kernel/swsusp.S
deleted file mode 100644
index a7baf0b5f818..000000000000
--- a/arch/s390/kernel/swsusp.S
+++ /dev/null
@@ -1,276 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * S390 64-bit swsusp implementation
- *
- * Copyright IBM Corp. 2009
- *
- * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com>
- * Michael Holzheu <holzheu@linux.vnet.ibm.com>
- */
-
-#include <linux/linkage.h>
-#include <asm/page.h>
-#include <asm/ptrace.h>
-#include <asm/thread_info.h>
-#include <asm/asm-offsets.h>
-#include <asm/nospec-insn.h>
-#include <asm/sigp.h>
-
-/*
- * Save register context in absolute 0 lowcore and call swsusp_save() to
- * create in-memory kernel image. The context is saved in the designated
- * "store status" memory locations (see POP).
- * We return from this function twice. The first time during the suspend to
- * disk process. The second time via the swsusp_arch_resume() function
- * (see below) in the resume process.
- * This function runs with disabled interrupts.
- */
- GEN_BR_THUNK %r14
-
- .section .text
-ENTRY(swsusp_arch_suspend)
- lg %r1,__LC_NODAT_STACK
- stmg %r6,%r15,__SF_GPRS(%r1)
- aghi %r1,-STACK_FRAME_OVERHEAD
- stg %r15,__SF_BACKCHAIN(%r1)
- lgr %r15,%r1
-
- /* Store FPU registers */
- brasl %r14,save_fpu_regs
-
- /* Deactivate DAT */
- stnsm __SF_EMPTY(%r15),0xfb
-
- /* Store prefix register on stack */
- stpx __SF_EMPTY(%r15)
-
- /* Save prefix register contents for lowcore copy */
- llgf %r10,__SF_EMPTY(%r15)
-
- /* Get pointer to save area */
- lghi %r1,0x1000
-
- /* Save CPU address */
- stap __LC_EXT_CPU_ADDR(%r0)
-
- /* Store registers */
- mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */
- stam %a0,%a15,0x340(%r1) /* store access registers */
- stctg %c0,%c15,0x380(%r1) /* store control registers */
- stmg %r0,%r15,0x280(%r1) /* store general registers */
-
- stpt 0x328(%r1) /* store timer */
- stck __SF_EMPTY(%r15) /* store clock */
- stckc 0x330(%r1) /* store clock comparator */
-
- /* Update cputime accounting before going to sleep */
- lg %r0,__LC_LAST_UPDATE_TIMER
- slg %r0,0x328(%r1)
- alg %r0,__LC_SYSTEM_TIMER
- stg %r0,__LC_SYSTEM_TIMER
- mvc __LC_LAST_UPDATE_TIMER(8),0x328(%r1)
- lg %r0,__LC_LAST_UPDATE_CLOCK
- slg %r0,__SF_EMPTY(%r15)
- alg %r0,__LC_STEAL_TIMER
- stg %r0,__LC_STEAL_TIMER
- mvc __LC_LAST_UPDATE_CLOCK(8),__SF_EMPTY(%r15)
-
- /* Activate DAT */
- stosm __SF_EMPTY(%r15),0x04
-
- /* Set prefix page to zero */
- xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15)
- spx __SF_EMPTY(%r15)
-
- /* Save absolute zero pages */
- larl %r2,suspend_zero_pages
- lg %r2,0(%r2)
- lghi %r4,0
- lghi %r3,2*PAGE_SIZE
- lghi %r5,2*PAGE_SIZE
-1: mvcle %r2,%r4,0
- jo 1b
-
- /* Copy lowcore to absolute zero lowcore */
- lghi %r2,0
- lgr %r4,%r10
- lghi %r3,2*PAGE_SIZE
- lghi %r5,2*PAGE_SIZE
-1: mvcle %r2,%r4,0
- jo 1b
-
- /* Save image */
- brasl %r14,swsusp_save
-
- /* Restore prefix register and return */
- lghi %r1,0x1000
- spx 0x318(%r1)
- lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
- lghi %r2,0
- BR_EX %r14
-ENDPROC(swsusp_arch_suspend)
-
-/*
- * Restore saved memory image to correct place and restore register context.
- * Then we return to the function that called swsusp_arch_suspend().
- * swsusp_arch_resume() runs with disabled interrupts.
- */
-ENTRY(swsusp_arch_resume)
- stmg %r6,%r15,__SF_GPRS(%r15)
- lgr %r1,%r15
- aghi %r15,-STACK_FRAME_OVERHEAD
- stg %r1,__SF_BACKCHAIN(%r15)
-
- /* Make all free pages stable */
- lghi %r2,1
- brasl %r14,arch_set_page_states
-
- /* Set prefix page to zero */
- xc __SF_EMPTY(4,%r15),__SF_EMPTY(%r15)
- spx __SF_EMPTY(%r15)
-
- /* Deactivate DAT */
- stnsm __SF_EMPTY(%r15),0xfb
-
- /* Restore saved image */
- larl %r1,restore_pblist
- lg %r1,0(%r1)
- ltgr %r1,%r1
- jz 2f
-0:
- lg %r2,8(%r1)
- lg %r4,0(%r1)
- iske %r0,%r4
- lghi %r3,PAGE_SIZE
- lghi %r5,PAGE_SIZE
-1:
- mvcle %r2,%r4,0
- jo 1b
- lg %r2,8(%r1)
- sske %r0,%r2
- lg %r1,16(%r1)
- ltgr %r1,%r1
- jnz 0b
-2:
- ptlb /* flush tlb */
-
- /* Reset System */
- larl %r1,.Lnew_pgm_check_psw
- epsw %r2,%r3
- stm %r2,%r3,0(%r1)
- mvc __LC_PGM_NEW_PSW(16,%r0),0(%r1)
- larl %r1,__swsusp_reset_dma
- lg %r1,0(%r1)
- BASR_EX %r14,%r1
- larl %r1,smp_cpu_mt_shift
- icm %r1,15,0(%r1)
- jz smt_done
- llgfr %r1,%r1
-smt_loop:
- sigp %r1,%r0,SIGP_SET_MULTI_THREADING
- brc 8,smt_done /* accepted */
- brc 2,smt_loop /* busy, try again */
-smt_done:
- larl %r1,.Lnew_pgm_check_psw
- lpswe 0(%r1)
-pgm_check_entry:
-
- /* Switch to original suspend CPU */
- larl %r1,.Lresume_cpu /* Resume CPU address: r2 */
- stap 0(%r1)
- llgh %r2,0(%r1)
- llgh %r1,__LC_EXT_CPU_ADDR(%r0) /* Suspend CPU address: r1 */
- cgr %r1,%r2
- je restore_registers /* r1 = r2 -> nothing to do */
- larl %r4,.Lrestart_suspend_psw /* Set new restart PSW */
- mvc __LC_RST_NEW_PSW(16,%r0),0(%r4)
-3:
- sigp %r9,%r1,SIGP_INITIAL_CPU_RESET /* sigp initial cpu reset */
- brc 8,4f /* accepted */
- brc 2,3b /* busy, try again */
-
- /* Suspend CPU not available -> panic */
- larl %r15,init_thread_union+THREAD_SIZE-STACK_FRAME_OVERHEAD
- larl %r2,.Lpanic_string
- brasl %r14,sclp_early_printk_force
- larl %r3,.Ldisabled_wait_31
- lpsw 0(%r3)
-4:
- /* Switch to suspend CPU */
- sigp %r9,%r1,SIGP_RESTART /* sigp restart to suspend CPU */
- brc 2,4b /* busy, try again */
-5:
- sigp %r9,%r2,SIGP_STOP /* sigp stop to current resume CPU */
- brc 2,5b /* busy, try again */
-6: j 6b
-
-restart_suspend:
- larl %r1,.Lresume_cpu
- llgh %r2,0(%r1)
-7:
- sigp %r9,%r2,SIGP_SENSE /* sigp sense, wait for resume CPU */
- brc 8,7b /* accepted, status 0, still running */
- brc 2,7b /* busy, try again */
- tmll %r9,0x40 /* Test if resume CPU is stopped */
- jz 7b
-
-restore_registers:
- /* Restore registers */
- lghi %r13,0x1000 /* %r1 = pointer to save area */
-
- /* Ignore time spent in suspended state. */
- llgf %r1,0x318(%r13)
- stck __LC_LAST_UPDATE_CLOCK(%r1)
- spt 0x328(%r13) /* reprogram timer */
- //sckc 0x330(%r13) /* set clock comparator */
-
- lctlg %c0,%c15,0x380(%r13) /* load control registers */
- lam %a0,%a15,0x340(%r13) /* load access registers */
-
- /* Load old stack */
- lg %r15,0x2f8(%r13)
-
- /* Save prefix register */
- mvc __SF_EMPTY(4,%r15),0x318(%r13)
-
- /* Restore absolute zero pages */
- lghi %r2,0
- larl %r4,suspend_zero_pages
- lg %r4,0(%r4)
- lghi %r3,2*PAGE_SIZE
- lghi %r5,2*PAGE_SIZE
-1: mvcle %r2,%r4,0
- jo 1b
-
- /* Restore prefix register */
- spx __SF_EMPTY(%r15)
-
- /* Activate DAT */
- stosm __SF_EMPTY(%r15),0x04
-
- /* Make all free pages unstable */
- lghi %r2,0
- brasl %r14,arch_set_page_states
-
- /* Call arch specific early resume code */
- brasl %r14,s390_early_resume
-
- /* Return 0 */
- lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15)
- lghi %r2,0
- BR_EX %r14
-ENDPROC(swsusp_arch_resume)
-
- .section .data..nosave,"aw",@progbits
- .align 8
-.Ldisabled_wait_31:
- .long 0x000a0000,0x00000000
-.Lpanic_string:
- .asciz "Resume not possible because suspend CPU is no longer available\n"
- .align 8
-.Lrestart_suspend_psw:
- .quad 0x0000000180000000,restart_suspend
-.Lnew_pgm_check_psw:
- .quad 0,pgm_check_entry
-.Lresume_cpu:
- .byte 0,0
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c
index 3627953007ed..5f70cefc13e4 100644
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@ -26,7 +26,6 @@
#include <linux/nodemask.h>
#include <linux/node.h>
#include <asm/sysinfo.h>
-#include <asm/numa.h>
#define PTF_HORIZONTAL (0UL)
#define PTF_VERTICAL (1UL)
@@ -63,8 +62,6 @@ static struct mask_info drawer_info;
struct cpu_topology_s390 cpu_topology[NR_CPUS];
EXPORT_SYMBOL_GPL(cpu_topology);
-cpumask_t cpus_with_topology;
-
static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
{
cpumask_t mask;
@@ -86,11 +83,12 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu)
cpumask_copy(&mask, cpu_present_mask);
break;
default:
- /* fallthrough */
+ fallthrough;
case TOPOLOGY_MODE_SINGLE:
cpumask_copy(&mask, cpumask_of(cpu));
break;
}
+ cpumask_and(&mask, &mask, cpu_online_mask);
return mask;
}
@@ -106,6 +104,7 @@ static cpumask_t cpu_thread_map(unsigned int cpu)
for (i = 0; i <= smp_cpu_mtid; i++)
if (cpu_present(cpu + i))
cpumask_set_cpu(cpu + i, &mask);
+ cpumask_and(&mask, &mask, cpu_online_mask);
return mask;
}
@@ -138,7 +137,6 @@ static void add_cpus_to_mask(struct topology_core *tl_core,
cpumask_set_cpu(lcpu + i, &drawer->mask);
cpumask_set_cpu(lcpu + i, &book->mask);
cpumask_set_cpu(lcpu + i, &socket->mask);
- cpumask_set_cpu(lcpu + i, &cpus_with_topology);
smp_cpu_set_polarization(lcpu + i, tl_core->pp);
}
}
@@ -245,10 +243,10 @@ int topology_set_cpu_management(int fc)
return rc;
}
-static void update_cpu_masks(void)
+void update_cpu_masks(void)
{
- struct cpu_topology_s390 *topo;
- int cpu, id;
+ struct cpu_topology_s390 *topo, *topo_package, *topo_sibling;
+ int cpu, sibling, pkg_first, smt_first, id;
for_each_possible_cpu(cpu) {
topo = &cpu_topology[cpu];
@@ -256,6 +254,7 @@ static void update_cpu_masks(void)
topo->core_mask = cpu_group_map(&socket_info, cpu);
topo->book_mask = cpu_group_map(&book_info, cpu);
topo->drawer_mask = cpu_group_map(&drawer_info, cpu);
+ topo->booted_cores = 0;
if (topology_mode != TOPOLOGY_MODE_HW) {
id = topology_mode == TOPOLOGY_MODE_PACKAGE ? 0 : cpu;
topo->thread_id = cpu;
@@ -263,11 +262,23 @@ static void update_cpu_masks(void)
topo->socket_id = id;
topo->book_id = id;
topo->drawer_id = id;
- if (cpu_present(cpu))
- cpumask_set_cpu(cpu, &cpus_with_topology);
}
}
- numa_update_cpu_topology();
+ for_each_online_cpu(cpu) {
+ topo = &cpu_topology[cpu];
+ pkg_first = cpumask_first(&topo->core_mask);
+ topo_package = &cpu_topology[pkg_first];
+ if (cpu == pkg_first) {
+ for_each_cpu(sibling, &topo->core_mask) {
+ topo_sibling = &cpu_topology[sibling];
+ smt_first = cpumask_first(&topo_sibling->thread_mask);
+ if (sibling == smt_first)
+ topo_package->booted_cores++;
+ }
+ } else {
+ topo->booted_cores = topo_package->booted_cores;
+ }
+ }
}
void store_topology(struct sysinfo_15_1_x *info)
@@ -289,7 +300,6 @@ static int __arch_update_cpu_topology(void)
int rc = 0;
mutex_lock(&smp_cpu_state_mutex);
- cpumask_clear(&cpus_with_topology);
if (MACHINE_HAS_TOPOLOGY) {
rc = 1;
store_topology(info);
diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c
index dc75588d7894..ff9cc4c3290e 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -271,7 +271,7 @@ void kernel_stack_overflow(struct pt_regs *regs)
}
NOKPROBE_SYMBOL(kernel_stack_overflow);
-static void test_monitor_call(void)
+static void __init test_monitor_call(void)
{
int val = 1;
diff --git a/arch/s390/kernel/vdso64/.gitignore b/arch/s390/kernel/vdso64/.gitignore
index 3fd18cf9fec2..4ec80685fecc 100644
--- a/arch/s390/kernel/vdso64/.gitignore
+++ b/arch/s390/kernel/vdso64/.gitignore
@@ -1 +1,2 @@
+# SPDX-License-Identifier: GPL-2.0-only
vdso64.lds
diff --git a/arch/s390/kvm/Kconfig b/arch/s390/kvm/Kconfig
index d3db3d7ed077..def3b60f1fe8 100644
--- a/arch/s390/kvm/Kconfig
+++ b/arch/s390/kvm/Kconfig
@@ -55,8 +55,4 @@ config KVM_S390_UCONTROL
If unsure, say N.
-# OK, it's a little counter-intuitive to do this, but it puts it neatly under
-# the virtualization menu.
-source "drivers/vhost/Kconfig"
-
endif # VIRTUALIZATION
diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 8191106bf7b9..bfb481134994 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -393,7 +393,7 @@ static unsigned long deliverable_irqs(struct kvm_vcpu *vcpu)
if (psw_mchk_disabled(vcpu))
active_mask &= ~IRQ_PEND_MCHK_MASK;
/* PV guest cpus can have a single interruption injected at a time. */
- if (kvm_s390_pv_cpu_is_protected(vcpu) &&
+ if (kvm_s390_pv_cpu_get_handle(vcpu) &&
vcpu->arch.sie_block->iictl != IICTL_CODE_NONE)
active_mask &= ~(IRQ_PEND_EXT_II_MASK |
IRQ_PEND_IO_MASK |
diff --git a/arch/s390/mm/cmm.c b/arch/s390/mm/cmm.c
index a51c892f14f3..ae989b740376 100644
--- a/arch/s390/mm/cmm.c
+++ b/arch/s390/mm/cmm.c
@@ -19,7 +19,6 @@
#include <linux/swap.h>
#include <linux/kthread.h>
#include <linux/oom.h>
-#include <linux/suspend.h>
#include <linux/uaccess.h>
#include <asm/pgalloc.h>
@@ -49,7 +48,6 @@ static volatile long cmm_pages_target;
static volatile long cmm_timed_pages_target;
static long cmm_timeout_pages;
static long cmm_timeout_seconds;
-static int cmm_suspended;
static struct cmm_page_array *cmm_page_list;
static struct cmm_page_array *cmm_timed_page_list;
@@ -151,9 +149,9 @@ static int cmm_thread(void *dummy)
while (1) {
rc = wait_event_interruptible(cmm_thread_wait,
- (!cmm_suspended && (cmm_pages != cmm_pages_target ||
- cmm_timed_pages != cmm_timed_pages_target)) ||
- kthread_should_stop());
+ cmm_pages != cmm_pages_target ||
+ cmm_timed_pages != cmm_timed_pages_target ||
+ kthread_should_stop());
if (kthread_should_stop() || rc == -ERESTARTSYS) {
cmm_pages_target = cmm_pages;
cmm_timed_pages_target = cmm_timed_pages;
@@ -390,38 +388,6 @@ static void cmm_smsg_target(const char *from, char *msg)
static struct ctl_table_header *cmm_sysctl_header;
-static int cmm_suspend(void)
-{
- cmm_suspended = 1;
- cmm_free_pages(cmm_pages, &cmm_pages, &cmm_page_list);
- cmm_free_pages(cmm_timed_pages, &cmm_timed_pages, &cmm_timed_page_list);
- return 0;
-}
-
-static int cmm_resume(void)
-{
- cmm_suspended = 0;
- cmm_kick_thread();
- return 0;
-}
-
-static int cmm_power_event(struct notifier_block *this,
- unsigned long event, void *ptr)
-{
- switch (event) {
- case PM_POST_HIBERNATION:
- return cmm_resume();
- case PM_HIBERNATION_PREPARE:
- return cmm_suspend();
- default:
- return NOTIFY_DONE;
- }
-}
-
-static struct notifier_block cmm_power_notifier = {
- .notifier_call = cmm_power_event,
-};
-
static int __init cmm_init(void)
{
int rc = -ENOMEM;
@@ -446,16 +412,11 @@ static int __init cmm_init(void)
rc = register_oom_notifier(&cmm_oom_nb);
if (rc < 0)
goto out_oom_notify;
- rc = register_pm_notifier(&cmm_power_notifier);
- if (rc)
- goto out_pm;
cmm_thread_ptr = kthread_run(cmm_thread, NULL, "cmmthread");
if (!IS_ERR(cmm_thread_ptr))
return 0;
rc = PTR_ERR(cmm_thread_ptr);
- unregister_pm_notifier(&cmm_power_notifier);
-out_pm:
unregister_oom_notifier(&cmm_oom_nb);
out_oom_notify:
#ifdef CONFIG_CMM_IUCV
@@ -475,7 +436,6 @@ static void __exit cmm_exit(void)
#ifdef CONFIG_CMM_IUCV
smsg_unregister_callback(SMSG_PREFIX, cmm_smsg_target);
#endif
- unregister_pm_notifier(&cmm_power_notifier);
unregister_oom_notifier(&cmm_oom_nb);
kthread_stop(cmm_thread_ptr);
del_timer_sync(&cmm_timer);
diff --git a/arch/s390/mm/fault.c b/arch/s390/mm/fault.c
index 09bf7f2121ac..dedc28be27ab 100644
--- a/arch/s390/mm/fault.c
+++ b/arch/s390/mm/fault.c
@@ -45,11 +45,11 @@
#define __SUBCODE_MASK 0x0600
#define __PF_RES_FIELD 0x8000000000000000ULL
-#define VM_FAULT_BADCONTEXT 0x010000
-#define VM_FAULT_BADMAP 0x020000
-#define VM_FAULT_BADACCESS 0x040000
-#define VM_FAULT_SIGNAL 0x080000
-#define VM_FAULT_PFAULT 0x100000
+#define VM_FAULT_BADCONTEXT ((__force vm_fault_t) 0x010000)
+#define VM_FAULT_BADMAP ((__force vm_fault_t) 0x020000)
+#define VM_FAULT_BADACCESS ((__force vm_fault_t) 0x040000)
+#define VM_FAULT_SIGNAL ((__force vm_fault_t) 0x080000)
+#define VM_FAULT_PFAULT ((__force vm_fault_t) 0x100000)
enum fault_type {
KERNEL_FAULT,
@@ -123,7 +123,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_REGION2:
table += (address & _REGION2_INDEX) >> _REGION2_SHIFT;
if (bad_address(table))
@@ -132,7 +132,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & _REGION_ENTRY_INVALID)
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_REGION3:
table += (address & _REGION3_INDEX) >> _REGION3_SHIFT;
if (bad_address(table))
@@ -141,7 +141,7 @@ static void dump_pagetable(unsigned long asce, unsigned long address)
if (*table & (_REGION_ENTRY_INVALID | _REGION3_ENTRY_LARGE))
goto out;
table = (unsigned long *)(*table & _REGION_ENTRY_ORIGIN);
- /* fallthrough */
+ fallthrough;
case _ASCE_TYPE_SEGMENT:
table += (address & _SEGMENT_INDEX) >> _SEGMENT_SHIFT;
if (bad_address(table))
@@ -328,7 +328,7 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
case VM_FAULT_BADACCESS:
if (access == VM_EXEC && signal_return(regs) == 0)
break;
- /* fallthrough */
+ fallthrough;
case VM_FAULT_BADMAP:
/* Bad memory access. Check if it is kernel or user space. */
if (user_mode(regs)) {
@@ -338,9 +338,8 @@ static noinline void do_fault_error(struct pt_regs *regs, int access,
do_sigsegv(regs, si_code);
break;
}
- /* fallthrough */
+ fallthrough;
case VM_FAULT_BADCONTEXT:
- /* fallthrough */
case VM_FAULT_PFAULT:
do_no_context(regs);
break;
@@ -581,7 +580,7 @@ void do_dat_exception(struct pt_regs *regs)
int access;
vm_fault_t fault;
- access = VM_READ | VM_EXEC | VM_WRITE;
+ access = VM_ACCESS_FLAGS;
fault = do_exception(regs, access);
if (unlikely(fault))
do_fault_error(regs, access, fault);
@@ -853,9 +852,7 @@ void do_secure_storage_access(struct pt_regs *regs)
BUG();
break;
case VDSO_FAULT:
- /* fallthrough */
case GMAP_FAULT:
- /* fallthrough */
default:
do_fault_error(regs, VM_READ | VM_WRITE, VM_FAULT_BADMAP);
WARN_ON_ONCE(1);
diff --git a/arch/s390/mm/hugetlbpage.c b/arch/s390/mm/hugetlbpage.c
index 5674710a4841..f01daddcbc5e 100644
--- a/arch/s390/mm/hugetlbpage.c
+++ b/arch/s390/mm/hugetlbpage.c
@@ -326,7 +326,6 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
struct hstate *h = hstate_file(file);
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
- int rc;
if (len & ~huge_page_mask(h))
return -EINVAL;
@@ -353,15 +352,9 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr,
else
addr = hugetlb_get_unmapped_area_topdown(file, addr, len,
pgoff, flags);
- if (addr & ~PAGE_MASK)
+ if (offset_in_page(addr))
return addr;
check_asce_limit:
- if (addr + len > current->mm->context.asce_limit &&
- addr + len <= TASK_SIZE) {
- rc = crst_table_upgrade(mm, addr + len);
- if (rc)
- return (unsigned long) rc;
- }
- return addr;
+ return check_asce_limit(mm, addr, len);
}
diff --git a/arch/s390/mm/init.c b/arch/s390/mm/init.c
index ac44bd76db4b..87b2d024e75a 100644
--- a/arch/s390/mm/init.c
+++ b/arch/s390/mm/init.c
@@ -268,20 +268,23 @@ device_initcall(s390_cma_mem_init);
#endif /* CONFIG_CMA */
int arch_add_memory(int nid, u64 start, u64 size,
- struct mhp_restrictions *restrictions)
+ struct mhp_params *params)
{
unsigned long start_pfn = PFN_DOWN(start);
unsigned long size_pages = PFN_DOWN(size);
int rc;
- if (WARN_ON_ONCE(restrictions->altmap))
+ if (WARN_ON_ONCE(params->altmap))
+ return -EINVAL;
+
+ if (WARN_ON_ONCE(params->pgprot.pgprot != PAGE_KERNEL.pgprot))
return -EINVAL;
rc = vmem_add_mapping(start, size);
if (rc)
return rc;
- rc = __add_pages(nid, start_pfn, size_pages, restrictions);
+ rc = __add_pages(nid, start_pfn, size_pages, params);
if (rc)
vmem_remove_mapping(start, size);
return rc;
diff --git a/arch/s390/mm/mmap.c b/arch/s390/mm/mmap.c
index cbc718ba6d78..1b78f630a9ca 100644
--- a/arch/s390/mm/mmap.c
+++ b/arch/s390/mm/mmap.c
@@ -72,14 +72,13 @@ static inline unsigned long mmap_base(unsigned long rnd,
return PAGE_ALIGN(STACK_TOP - gap - rnd);
}
-unsigned long
-arch_get_unmapped_area(struct file *filp, unsigned long addr,
- unsigned long len, unsigned long pgoff, unsigned long flags)
+unsigned long arch_get_unmapped_area(struct file *filp, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
{
struct mm_struct *mm = current->mm;
struct vm_area_struct *vma;
struct vm_unmapped_area_info info;
- int rc;
if (len > TASK_SIZE - mmap_min_addr)
return -ENOMEM;
@@ -105,30 +104,20 @@ arch_get_unmapped_area(struct file *filp, unsigned long addr,
info.align_mask = 0;
info.align_offset = pgoff << PAGE_SHIFT;
addr = vm_unmapped_area(&info);
- if (addr & ~PAGE_MASK)
+ if (offset_in_page(addr))
return addr;
check_asce_limit:
- if (addr + len > current->mm->context.asce_limit &&
- addr + len <= TASK_SIZE) {
- rc = crst_table_upgrade(mm, addr + len);
- if (rc)
- return (unsigned long) rc;
- }
-
- return addr;
+ return check_asce_limit(mm, addr, len);
}
-unsigned long
-arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
- const unsigned long len, const unsigned long pgoff,
- const unsigned long flags)
+unsigned long arch_get_unmapped_area_topdown(struct file *filp, unsigned long addr,
+ unsigned long len, unsigned long pgoff,
+ unsigned long flags)
{
struct vm_area_struct *vma;
struct mm_struct *mm = current->mm;
- unsigned long addr = addr0;
struct vm_unmapped_area_info info;
- int rc;
/* requested length too big for entire address space */
if (len > TASK_SIZE - mmap_min_addr)
@@ -163,25 +152,18 @@ arch_get_unmapped_area_topdown(struct file *filp, const unsigned long addr0,
* can happen with large stack limits and large mmap()
* allocations.
*/
- if (addr & ~PAGE_MASK) {
+ if (offset_in_page(addr)) {
VM_BUG_ON(addr != -ENOMEM);
info.flags = 0;
info.low_limit = TASK_UNMAPPED_BASE;
info.high_limit = TASK_SIZE;
addr = vm_unmapped_area(&info);
- if (addr & ~PAGE_MASK)
+ if (offset_in_page(addr))
return addr;
}
check_asce_limit:
- if (addr + len > current->mm->context.asce_limit &&
- addr + len <= TASK_SIZE) {
- rc = crst_table_upgrade(mm, addr + len);
- if (rc)
- return (unsigned long) rc;
- }
-
- return addr;
+ return check_asce_limit(mm, addr, len);
}
/*
diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index f8c6faab41f4..e22c06d5f206 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -367,20 +367,4 @@ void __kernel_map_pages(struct page *page, int numpages, int enable)
}
}
-#ifdef CONFIG_HIBERNATION
-bool kernel_page_present(struct page *page)
-{
- unsigned long addr;
- int cc;
-
- addr = page_to_phys(page);
- asm volatile(
- " lra %1,0(%1)\n"
- " ipm %0\n"
- " srl %0,28"
- : "=d" (cc), "+a" (addr) : : "cc");
- return cc == 0;
-}
-#endif /* CONFIG_HIBERNATION */
-
#endif /* CONFIG_DEBUG_PAGEALLOC */
diff --git a/arch/s390/mm/pgalloc.c b/arch/s390/mm/pgalloc.c
index 3dd253f81a77..498c98a312f4 100644
--- a/arch/s390/mm/pgalloc.c
+++ b/arch/s390/mm/pgalloc.c
@@ -77,67 +77,65 @@ static void __crst_table_upgrade(void *arg)
int crst_table_upgrade(struct mm_struct *mm, unsigned long end)
{
- unsigned long *table, *pgd;
- int rc, notify;
+ unsigned long *pgd = NULL, *p4d = NULL, *__pgd;
+ unsigned long asce_limit = mm->context.asce_limit;
/* upgrade should only happen from 3 to 4, 3 to 5, or 4 to 5 levels */
- VM_BUG_ON(mm->context.asce_limit < _REGION2_SIZE);
- rc = 0;
- notify = 0;
- while (mm->context.asce_limit < end) {
- table = crst_table_alloc(mm);
- if (!table) {
- rc = -ENOMEM;
- break;
- }
- spin_lock_bh(&mm->page_table_lock);
- pgd = (unsigned long *) mm->pgd;
- if (mm->context.asce_limit == _REGION2_SIZE) {
- crst_table_init(table, _REGION2_ENTRY_EMPTY);
- p4d_populate(mm, (p4d_t *) table, (pud_t *) pgd);
- mm->pgd = (pgd_t *) table;
- mm->context.asce_limit = _REGION1_SIZE;
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
- mm_inc_nr_puds(mm);
- } else {
- crst_table_init(table, _REGION1_ENTRY_EMPTY);
- pgd_populate(mm, (pgd_t *) table, (p4d_t *) pgd);
- mm->pgd = (pgd_t *) table;
- mm->context.asce_limit = -PAGE_SIZE;
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_REGION1;
- }
- notify = 1;
- spin_unlock_bh(&mm->page_table_lock);
- }
- if (notify)
- on_each_cpu(__crst_table_upgrade, mm, 0);
- return rc;
-}
+ VM_BUG_ON(asce_limit < _REGION2_SIZE);
-void crst_table_downgrade(struct mm_struct *mm)
-{
- pgd_t *pgd;
+ if (end <= asce_limit)
+ return 0;
- /* downgrade should only happen from 3 to 2 levels (compat only) */
- VM_BUG_ON(mm->context.asce_limit != _REGION2_SIZE);
+ if (asce_limit == _REGION2_SIZE) {
+ p4d = crst_table_alloc(mm);
+ if (unlikely(!p4d))
+ goto err_p4d;
+ crst_table_init(p4d, _REGION2_ENTRY_EMPTY);
+ }
+ if (end > _REGION1_SIZE) {
+ pgd = crst_table_alloc(mm);
+ if (unlikely(!pgd))
+ goto err_pgd;
+ crst_table_init(pgd, _REGION1_ENTRY_EMPTY);
+ }
- if (current->active_mm == mm) {
- clear_user_asce();
- __tlb_flush_mm(mm);
+ spin_lock_bh(&mm->page_table_lock);
+
+ /*
+ * This routine gets called with mmap_sem lock held and there is
+ * no reason to optimize for the case of otherwise. However, if
+ * that would ever change, the below check will let us know.
+ */
+ VM_BUG_ON(asce_limit != mm->context.asce_limit);
+
+ if (p4d) {
+ __pgd = (unsigned long *) mm->pgd;
+ p4d_populate(mm, (p4d_t *) p4d, (pud_t *) __pgd);
+ mm->pgd = (pgd_t *) p4d;
+ mm->context.asce_limit = _REGION1_SIZE;
+ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
+ _ASCE_USER_BITS | _ASCE_TYPE_REGION2;
+ mm_inc_nr_puds(mm);
+ }
+ if (pgd) {
+ __pgd = (unsigned long *) mm->pgd;
+ pgd_populate(mm, (pgd_t *) pgd, (p4d_t *) __pgd);
+ mm->pgd = (pgd_t *) pgd;
+ mm->context.asce_limit = TASK_SIZE_MAX;
+ mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
+ _ASCE_USER_BITS | _ASCE_TYPE_REGION1;
}
- pgd = mm->pgd;
- mm_dec_nr_pmds(mm);
- mm->pgd = (pgd_t *) (pgd_val(*pgd) & _REGION_ENTRY_ORIGIN);
- mm->context.asce_limit = _REGION3_SIZE;
- mm->context.asce = __pa(mm->pgd) | _ASCE_TABLE_LENGTH |
- _ASCE_USER_BITS | _ASCE_TYPE_SEGMENT;
- crst_table_free(mm, (unsigned long *) pgd);
+ spin_unlock_bh(&mm->page_table_lock);
- if (current->active_mm == mm)
- set_user_asce(mm);
+ on_each_cpu(__crst_table_upgrade, mm, 0);
+
+ return 0;
+
+err_pgd:
+ crst_table_free(mm, p4d);
+err_p4d:
+ return -ENOMEM;
}
static inline unsigned int atomic_xor_bits(atomic_t *v, unsigned int bits)
@@ -304,7 +302,7 @@ void __tlb_remove_table(void *_table)
mask >>= 24;
if (mask != 0)
break;
- /* fallthrough */
+ fallthrough;
case 3: /* 4K page table with pgstes */
if (mask & 3)
atomic_xor_bits(&page->_refcount, 3 << 24);
@@ -529,7 +527,7 @@ void base_asce_free(unsigned long asce)
base_region2_walk(table, 0, _REGION1_SIZE, 0);
break;
case _ASCE_TYPE_REGION1:
- base_region1_walk(table, 0, -_PAGE_SIZE, 0);
+ base_region1_walk(table, 0, TASK_SIZE_MAX, 0);
break;
}
base_crst_free(table);
diff --git a/arch/s390/mm/vmem.c b/arch/s390/mm/vmem.c
index b403fa14847d..f810930aff42 100644
--- a/arch/s390/mm/vmem.c
+++ b/arch/s390/mm/vmem.c
@@ -415,6 +415,10 @@ void __init vmem_map_init(void)
SET_MEMORY_RO | SET_MEMORY_X);
__set_memory(__stext_dma, (__etext_dma - __stext_dma) >> PAGE_SHIFT,
SET_MEMORY_RO | SET_MEMORY_X);
+
+ /* we need lowcore executable for our LPSWE instructions */
+ set_memory_x(0, 1);
+
pr_info("Write protected kernel read-only data: %luk\n",
(unsigned long)(__end_rodata - _stext) >> 10);
}
diff --git a/arch/s390/numa/Makefile b/arch/s390/numa/Makefile
index 66c2dff74895..c89d26f4f77d 100644
--- a/arch/s390/numa/Makefile
+++ b/arch/s390/numa/Makefile
@@ -1,4 +1,2 @@
# SPDX-License-Identifier: GPL-2.0
obj-y += numa.o
-obj-y += toptree.o
-obj-$(CONFIG_NUMA_EMU) += mode_emu.o
diff --git a/arch/s390/numa/mode_emu.c b/arch/s390/numa/mode_emu.c
deleted file mode 100644
index 72d742bb2d17..000000000000
--- a/arch/s390/numa/mode_emu.c
+++ /dev/null
@@ -1,577 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * NUMA support for s390
- *
- * NUMA emulation (aka fake NUMA) distributes the available memory to nodes
- * without using real topology information about the physical memory of the
- * machine.
- *
- * It distributes the available CPUs to nodes while respecting the original
- * machine topology information. This is done by trying to avoid to separate
- * CPUs which reside on the same book or even on the same MC.
- *
- * Because the current Linux scheduler code requires a stable cpu to node
- * mapping, cores are pinned to nodes when the first CPU thread is set online.
- *
- * Copyright IBM Corp. 2015
- */
-
-#define KMSG_COMPONENT "numa_emu"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
-#include <linux/kernel.h>
-#include <linux/cpumask.h>
-#include <linux/memblock.h>
-#include <linux/node.h>
-#include <linux/memory.h>
-#include <linux/slab.h>
-#include <asm/smp.h>
-#include <asm/topology.h>
-#include "numa_mode.h"
-#include "toptree.h"
-
-/* Distances between the different system components */
-#define DIST_EMPTY 0
-#define DIST_CORE 1
-#define DIST_MC 2
-#define DIST_BOOK 3
-#define DIST_DRAWER 4
-#define DIST_MAX 5
-
-/* Node distance reported to common code */
-#define EMU_NODE_DIST 10
-
-/* Node ID for free (not yet pinned) cores */
-#define NODE_ID_FREE -1
-
-/* Different levels of toptree */
-enum toptree_level {CORE, MC, BOOK, DRAWER, NODE, TOPOLOGY};
-
-/* The two toptree IDs */
-enum {TOPTREE_ID_PHYS, TOPTREE_ID_NUMA};
-
-/* Number of NUMA nodes */
-static int emu_nodes = 1;
-/* NUMA stripe size */
-static unsigned long emu_size;
-
-/*
- * Node to core pinning information updates are protected by
- * "sched_domains_mutex".
- */
-static struct {
- s32 to_node_id[CONFIG_NR_CPUS]; /* Pinned core to node mapping */
- int total; /* Total number of pinned cores */
- int per_node_target; /* Cores per node without extra cores */
- int per_node[MAX_NUMNODES]; /* Number of cores pinned to node */
-} *emu_cores;
-
-/*
- * Pin a core to a node
- */
-static void pin_core_to_node(int core_id, int node_id)
-{
- if (emu_cores->to_node_id[core_id] == NODE_ID_FREE) {
- emu_cores->per_node[node_id]++;
- emu_cores->to_node_id[core_id] = node_id;
- emu_cores->total++;
- } else {
- WARN_ON(emu_cores->to_node_id[core_id] != node_id);
- }
-}
-
-/*
- * Number of pinned cores of a node
- */
-static int cores_pinned(struct toptree *node)
-{
- return emu_cores->per_node[node->id];
-}
-
-/*
- * ID of the node where the core is pinned (or NODE_ID_FREE)
- */
-static int core_pinned_to_node_id(struct toptree *core)
-{
- return emu_cores->to_node_id[core->id];
-}
-
-/*
- * Number of cores in the tree that are not yet pinned
- */
-static int cores_free(struct toptree *tree)
-{
- struct toptree *core;
- int count = 0;
-
- toptree_for_each(core, tree, CORE) {
- if (core_pinned_to_node_id(core) == NODE_ID_FREE)
- count++;
- }
- return count;
-}
-
-/*
- * Return node of core
- */
-static struct toptree *core_node(struct toptree *core)
-{
- return core->parent->parent->parent->parent;
-}
-
-/*
- * Return drawer of core
- */
-static struct toptree *core_drawer(struct toptree *core)
-{
- return core->parent->parent->parent;
-}
-
-/*
- * Return book of core
- */
-static struct toptree *core_book(struct toptree *core)
-{
- return core->parent->parent;
-}
-
-/*
- * Return mc of core
- */
-static struct toptree *core_mc(struct toptree *core)
-{
- return core->parent;
-}
-
-/*
- * Distance between two cores
- */
-static int dist_core_to_core(struct toptree *core1, struct toptree *core2)
-{
- if (core_drawer(core1)->id != core_drawer(core2)->id)
- return DIST_DRAWER;
- if (core_book(core1)->id != core_book(core2)->id)
- return DIST_BOOK;
- if (core_mc(core1)->id != core_mc(core2)->id)
- return DIST_MC;
- /* Same core or sibling on same MC */
- return DIST_CORE;
-}
-
-/*
- * Distance of a node to a core
- */
-static int dist_node_to_core(struct toptree *node, struct toptree *core)
-{
- struct toptree *core_node;
- int dist_min = DIST_MAX;
-
- toptree_for_each(core_node, node, CORE)
- dist_min = min(dist_min, dist_core_to_core(core_node, core));
- return dist_min == DIST_MAX ? DIST_EMPTY : dist_min;
-}
-
-/*
- * Unify will delete empty nodes, therefore recreate nodes.
- */
-static void toptree_unify_tree(struct toptree *tree)
-{
- int nid;
-
- toptree_unify(tree);
- for (nid = 0; nid < emu_nodes; nid++)
- toptree_get_child(tree, nid);
-}
-
-/*
- * Find the best/nearest node for a given core and ensure that no node
- * gets more than "emu_cores->per_node_target + extra" cores.
- */
-static struct toptree *node_for_core(struct toptree *numa, struct toptree *core,
- int extra)
-{
- struct toptree *node, *node_best = NULL;
- int dist_cur, dist_best, cores_target;
-
- cores_target = emu_cores->per_node_target + extra;
- dist_best = DIST_MAX;
- node_best = NULL;
- toptree_for_each(node, numa, NODE) {
- /* Already pinned cores must use their nodes */
- if (core_pinned_to_node_id(core) == node->id) {
- node_best = node;
- break;
- }
- /* Skip nodes that already have enough cores */
- if (cores_pinned(node) >= cores_target)
- continue;
- dist_cur = dist_node_to_core(node, core);
- if (dist_cur < dist_best) {
- dist_best = dist_cur;
- node_best = node;
- }
- }
- return node_best;
-}
-
-/*
- * Find the best node for each core with respect to "extra" core count
- */
-static void toptree_to_numa_single(struct toptree *numa, struct toptree *phys,
- int extra)
-{
- struct toptree *node, *core, *tmp;
-
- toptree_for_each_safe(core, tmp, phys, CORE) {
- node = node_for_core(numa, core, extra);
- if (!node)
- return;
- toptree_move(core, node);
- pin_core_to_node(core->id, node->id);
- }
-}
-
-/*
- * Move structures of given level to specified NUMA node
- */
-static void move_level_to_numa_node(struct toptree *node, struct toptree *phys,
- enum toptree_level level, bool perfect)
-{
- int cores_free, cores_target = emu_cores->per_node_target;
- struct toptree *cur, *tmp;
-
- toptree_for_each_safe(cur, tmp, phys, level) {
- cores_free = cores_target - toptree_count(node, CORE);
- if (perfect) {
- if (cores_free == toptree_count(cur, CORE))
- toptree_move(cur, node);
- } else {
- if (cores_free >= toptree_count(cur, CORE))
- toptree_move(cur, node);
- }
- }
-}
-
-/*
- * Move structures of a given level to NUMA nodes. If "perfect" is specified
- * move only perfectly fitting structures. Otherwise move also smaller
- * than needed structures.
- */
-static void move_level_to_numa(struct toptree *numa, struct toptree *phys,
- enum toptree_level level, bool perfect)
-{
- struct toptree *node;
-
- toptree_for_each(node, numa, NODE)
- move_level_to_numa_node(node, phys, level, perfect);
-}
-
-/*
- * For the first run try to move the big structures
- */
-static void toptree_to_numa_first(struct toptree *numa, struct toptree *phys)
-{
- struct toptree *core;
-
- /* Always try to move perfectly fitting structures first */
- move_level_to_numa(numa, phys, DRAWER, true);
- move_level_to_numa(numa, phys, DRAWER, false);
- move_level_to_numa(numa, phys, BOOK, true);
- move_level_to_numa(numa, phys, BOOK, false);
- move_level_to_numa(numa, phys, MC, true);
- move_level_to_numa(numa, phys, MC, false);
- /* Now pin all the moved cores */
- toptree_for_each(core, numa, CORE)
- pin_core_to_node(core->id, core_node(core)->id);
-}
-
-/*
- * Allocate new topology and create required nodes
- */
-static struct toptree *toptree_new(int id, int nodes)
-{
- struct toptree *tree;
- int nid;
-
- tree = toptree_alloc(TOPOLOGY, id);
- if (!tree)
- goto fail;
- for (nid = 0; nid < nodes; nid++) {
- if (!toptree_get_child(tree, nid))
- goto fail;
- }
- return tree;
-fail:
- panic("NUMA emulation could not allocate topology");
-}
-
-/*
- * Allocate and initialize core to node mapping
- */
-static void __ref create_core_to_node_map(void)
-{
- int i;
-
- emu_cores = memblock_alloc(sizeof(*emu_cores), 8);
- if (!emu_cores)
- panic("%s: Failed to allocate %zu bytes align=0x%x\n",
- __func__, sizeof(*emu_cores), 8);
- for (i = 0; i < ARRAY_SIZE(emu_cores->to_node_id); i++)
- emu_cores->to_node_id[i] = NODE_ID_FREE;
-}
-
-/*
- * Move cores from physical topology into NUMA target topology
- * and try to keep as much of the physical topology as possible.
- */
-static struct toptree *toptree_to_numa(struct toptree *phys)
-{
- static int first = 1;
- struct toptree *numa;
- int cores_total;
-
- cores_total = emu_cores->total + cores_free(phys);
- emu_cores->per_node_target = cores_total / emu_nodes;
- numa = toptree_new(TOPTREE_ID_NUMA, emu_nodes);
- if (first) {
- toptree_to_numa_first(numa, phys);
- first = 0;
- }
- toptree_to_numa_single(numa, phys, 0);
- toptree_to_numa_single(numa, phys, 1);
- toptree_unify_tree(numa);
-
- WARN_ON(cpumask_weight(&phys->mask));
- return numa;
-}
-
-/*
- * Create a toptree out of the physical topology that we got from the hypervisor
- */
-static struct toptree *toptree_from_topology(void)
-{
- struct toptree *phys, *node, *drawer, *book, *mc, *core;
- struct cpu_topology_s390 *top;
- int cpu;
-
- phys = toptree_new(TOPTREE_ID_PHYS, 1);
-
- for_each_cpu(cpu, &cpus_with_topology) {
- top = &cpu_topology[cpu];
- node = toptree_get_child(phys, 0);
- drawer = toptree_get_child(node, top->drawer_id);
- book = toptree_get_child(drawer, top->book_id);
- mc = toptree_get_child(book, top->socket_id);
- core = toptree_get_child(mc, smp_get_base_cpu(cpu));
- if (!drawer || !book || !mc || !core)
- panic("NUMA emulation could not allocate memory");
- cpumask_set_cpu(cpu, &core->mask);
- toptree_update_mask(mc);
- }
- return phys;
-}
-
-/*
- * Add toptree core to topology and create correct CPU masks
- */
-static void topology_add_core(struct toptree *core)
-{
- struct cpu_topology_s390 *top;
- int cpu;
-
- for_each_cpu(cpu, &core->mask) {
- top = &cpu_topology[cpu];
- cpumask_copy(&top->thread_mask, &core->mask);
- cpumask_copy(&top->core_mask, &core_mc(core)->mask);
- cpumask_copy(&top->book_mask, &core_book(core)->mask);
- cpumask_copy(&top->drawer_mask, &core_drawer(core)->mask);
- cpumask_set_cpu(cpu, &node_to_cpumask_map[core_node(core)->id]);
- top->node_id = core_node(core)->id;
- }
-}
-
-/*
- * Apply toptree to topology and create CPU masks
- */
-static void toptree_to_topology(struct toptree *numa)
-{
- struct toptree *core;
- int i;
-
- /* Clear all node masks */
- for (i = 0; i < MAX_NUMNODES; i++)
- cpumask_clear(&node_to_cpumask_map[i]);
-
- /* Rebuild all masks */
- toptree_for_each(core, numa, CORE)
- topology_add_core(core);
-}
-
-/*
- * Show the node to core mapping
- */
-static void print_node_to_core_map(void)
-{
- int nid, cid;
-
- if (!numa_debug_enabled)
- return;
- printk(KERN_DEBUG "NUMA node to core mapping\n");
- for (nid = 0; nid < emu_nodes; nid++) {
- printk(KERN_DEBUG " node %3d: ", nid);
- for (cid = 0; cid < ARRAY_SIZE(emu_cores->to_node_id); cid++) {
- if (emu_cores->to_node_id[cid] == nid)
- printk(KERN_CONT "%d ", cid);
- }
- printk(KERN_CONT "\n");
- }
-}
-
-static void pin_all_possible_cpus(void)
-{
- int core_id, node_id, cpu;
- static int initialized;
-
- if (initialized)
- return;
- print_node_to_core_map();
- node_id = 0;
- for_each_possible_cpu(cpu) {
- core_id = smp_get_base_cpu(cpu);
- if (emu_cores->to_node_id[core_id] != NODE_ID_FREE)
- continue;
- pin_core_to_node(core_id, node_id);
- cpu_topology[cpu].node_id = node_id;
- node_id = (node_id + 1) % emu_nodes;
- }
- print_node_to_core_map();
- initialized = 1;
-}
-
-/*
- * Transfer physical topology into a NUMA topology and modify CPU masks
- * according to the NUMA topology.
- *
- * Must be called with "sched_domains_mutex" lock held.
- */
-static void emu_update_cpu_topology(void)
-{
- struct toptree *phys, *numa;
-
- if (emu_cores == NULL)
- create_core_to_node_map();
- phys = toptree_from_topology();
- numa = toptree_to_numa(phys);
- toptree_free(phys);
- toptree_to_topology(numa);
- toptree_free(numa);
- pin_all_possible_cpus();
-}
-
-/*
- * If emu_size is not set, use CONFIG_EMU_SIZE. Then round to minimum
- * alignment (needed for memory hotplug).
- */
-static unsigned long emu_setup_size_adjust(unsigned long size)
-{
- unsigned long size_new;
-
- size = size ? : CONFIG_EMU_SIZE;
- size_new = roundup(size, memory_block_size_bytes());
- if (size_new == size)
- return size;
- pr_warn("Increasing memory stripe size from %ld MB to %ld MB\n",
- size >> 20, size_new >> 20);
- return size_new;
-}
-
-/*
- * If we have not enough memory for the specified nodes, reduce the node count.
- */
-static int emu_setup_nodes_adjust(int nodes)
-{
- int nodes_max;
-
- nodes_max = memblock.memory.total_size / emu_size;
- nodes_max = max(nodes_max, 1);
- if (nodes_max >= nodes)
- return nodes;
- pr_warn("Not enough memory for %d nodes, reducing node count\n", nodes);
- return nodes_max;
-}
-
-/*
- * Early emu setup
- */
-static void emu_setup(void)
-{
- int nid;
-
- emu_size = emu_setup_size_adjust(emu_size);
- emu_nodes = emu_setup_nodes_adjust(emu_nodes);
- for (nid = 0; nid < emu_nodes; nid++)
- node_set(nid, node_possible_map);
- pr_info("Creating %d nodes with memory stripe size %ld MB\n",
- emu_nodes, emu_size >> 20);
-}
-
-/*
- * Return node id for given page number
- */
-static int emu_pfn_to_nid(unsigned long pfn)
-{
- return (pfn / (emu_size >> PAGE_SHIFT)) % emu_nodes;
-}
-
-/*
- * Return stripe size
- */
-static unsigned long emu_align(void)
-{
- return emu_size;
-}
-
-/*
- * Return distance between two nodes
- */
-static int emu_distance(int node1, int node2)
-{
- return (node1 != node2) * EMU_NODE_DIST;
-}
-
-/*
- * Define callbacks for generic s390 NUMA infrastructure
- */
-const struct numa_mode numa_mode_emu = {
- .name = "emu",
- .setup = emu_setup,
- .update_cpu_topology = emu_update_cpu_topology,
- .__pfn_to_nid = emu_pfn_to_nid,
- .align = emu_align,
- .distance = emu_distance,
-};
-
-/*
- * Kernel parameter: emu_nodes=<n>
- */
-static int __init early_parse_emu_nodes(char *p)
-{
- int count;
-
- if (!p || kstrtoint(p, 0, &count) != 0 || count <= 0)
- return 0;
- emu_nodes = min(count, MAX_NUMNODES);
- return 0;
-}
-early_param("emu_nodes", early_parse_emu_nodes);
-
-/*
- * Kernel parameter: emu_size=[<n>[k|M|G|T]]
- */
-static int __init early_parse_emu_size(char *p)
-{
- if (p)
- emu_size = memparse(p, NULL);
- return 0;
-}
-early_param("emu_size", early_parse_emu_size);
diff --git a/arch/s390/numa/numa.c b/arch/s390/numa/numa.c
index d2910fa834c8..51c5a9f6e525 100644
--- a/arch/s390/numa/numa.c
+++ b/arch/s390/numa/numa.c
@@ -7,165 +7,36 @@
* Copyright IBM Corp. 2015
*/
-#define KMSG_COMPONENT "numa"
-#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
-
#include <linux/kernel.h>
#include <linux/mmzone.h>
#include <linux/cpumask.h>
#include <linux/memblock.h>
-#include <linux/slab.h>
#include <linux/node.h>
-
#include <asm/numa.h>
-#include "numa_mode.h"
-pg_data_t *node_data[MAX_NUMNODES];
+struct pglist_data *node_data[MAX_NUMNODES];
EXPORT_SYMBOL(node_data);
-cpumask_t node_to_cpumask_map[MAX_NUMNODES];
-EXPORT_SYMBOL(node_to_cpumask_map);
-
-static void plain_setup(void)
-{
- node_set(0, node_possible_map);
-}
-
-const struct numa_mode numa_mode_plain = {
- .name = "plain",
- .setup = plain_setup,
-};
-
-static const struct numa_mode *mode = &numa_mode_plain;
-
-int numa_pfn_to_nid(unsigned long pfn)
-{
- return mode->__pfn_to_nid ? mode->__pfn_to_nid(pfn) : 0;
-}
-
-void numa_update_cpu_topology(void)
-{
- if (mode->update_cpu_topology)
- mode->update_cpu_topology();
-}
-
-int __node_distance(int a, int b)
-{
- return mode->distance ? mode->distance(a, b) : 0;
-}
-EXPORT_SYMBOL(__node_distance);
-
-int numa_debug_enabled;
-
-/*
- * numa_setup_memory() - Assign bootmem to nodes
- *
- * The memory is first added to memblock without any respect to nodes.
- * This is fixed before remaining memblock memory is handed over to the
- * buddy allocator.
- * An important side effect is that large bootmem allocations might easily
- * cross node boundaries, which can be needed for large allocations with
- * smaller memory stripes in each node (i.e. when using NUMA emulation).
- *
- * Memory defines nodes:
- * Therefore this routine also sets the nodes online with memory.
- */
-static void __init numa_setup_memory(void)
+void __init numa_setup(void)
{
- unsigned long cur_base, align, end_of_dram;
- int nid = 0;
-
- end_of_dram = memblock_end_of_DRAM();
- align = mode->align ? mode->align() : ULONG_MAX;
-
- /*
- * Step through all available memory and assign it to the nodes
- * indicated by the mode implementation.
- * All nodes which are seen here will be set online.
- */
- cur_base = 0;
- do {
- nid = numa_pfn_to_nid(PFN_DOWN(cur_base));
- node_set_online(nid);
- memblock_set_node(cur_base, align, &memblock.memory, nid);
- cur_base += align;
- } while (cur_base < end_of_dram);
+ int nid;
- /* Allocate and fill out node_data */
+ nodes_clear(node_possible_map);
+ node_set(0, node_possible_map);
+ node_set_online(0);
for (nid = 0; nid < MAX_NUMNODES; nid++) {
NODE_DATA(nid) = memblock_alloc(sizeof(pg_data_t), 8);
if (!NODE_DATA(nid))
panic("%s: Failed to allocate %zu bytes align=0x%x\n",
__func__, sizeof(pg_data_t), 8);
}
-
- for_each_online_node(nid) {
- unsigned long start_pfn, end_pfn;
- unsigned long t_start, t_end;
- int i;
-
- start_pfn = ULONG_MAX;
- end_pfn = 0;
- for_each_mem_pfn_range(i, nid, &t_start, &t_end, NULL) {
- if (t_start < start_pfn)
- start_pfn = t_start;
- if (t_end > end_pfn)
- end_pfn = t_end;
- }
- NODE_DATA(nid)->node_spanned_pages = end_pfn - start_pfn;
- NODE_DATA(nid)->node_id = nid;
- }
-}
-
-/*
- * numa_setup() - Earliest initialization
- *
- * Assign the mode and call the mode's setup routine.
- */
-void __init numa_setup(void)
-{
- pr_info("NUMA mode: %s\n", mode->name);
- nodes_clear(node_possible_map);
- /* Initially attach all possible CPUs to node 0. */
- cpumask_copy(&node_to_cpumask_map[0], cpu_possible_mask);
- if (mode->setup)
- mode->setup();
- numa_setup_memory();
- memblock_dump_all();
+ NODE_DATA(0)->node_spanned_pages = memblock_end_of_DRAM() >> PAGE_SHIFT;
+ NODE_DATA(0)->node_id = 0;
}
-/*
- * numa_init_late() - Initialization initcall
- *
- * Register NUMA nodes.
- */
static int __init numa_init_late(void)
{
- int nid;
-
- for_each_online_node(nid)
- register_one_node(nid);
+ register_one_node(0);
return 0;
}
arch_initcall(numa_init_late);
-
-static int __init parse_debug(char *parm)
-{
- numa_debug_enabled = 1;
- return 0;
-}
-early_param("numa_debug", parse_debug);
-
-static int __init parse_numa(char *parm)
-{
- if (!parm)
- return 1;
- if (strcmp(parm, numa_mode_plain.name) == 0)
- mode = &numa_mode_plain;
-#ifdef CONFIG_NUMA_EMU
- if (strcmp(parm, numa_mode_emu.name) == 0)
- mode = &numa_mode_emu;
-#endif
- return 0;
-}
-early_param("numa", parse_numa);
diff --git a/arch/s390/numa/numa_mode.h b/arch/s390/numa/numa_mode.h
deleted file mode 100644
index dfd3e2784081..000000000000
--- a/arch/s390/numa/numa_mode.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * NUMA support for s390
- *
- * Define declarations used for communication between NUMA mode
- * implementations and NUMA core functionality.
- *
- * Copyright IBM Corp. 2015
- */
-#ifndef __S390_NUMA_MODE_H
-#define __S390_NUMA_MODE_H
-
-struct numa_mode {
- char *name; /* Name of mode */
- void (*setup)(void); /* Initizalize mode */
- void (*update_cpu_topology)(void); /* Called by topology code */
- int (*__pfn_to_nid)(unsigned long pfn); /* PFN to node ID */
- unsigned long (*align)(void); /* Minimum node alignment */
- int (*distance)(int a, int b); /* Distance between two nodes */
-};
-
-extern const struct numa_mode numa_mode_plain;
-extern const struct numa_mode numa_mode_emu;
-
-#endif /* __S390_NUMA_MODE_H */
diff --git a/arch/s390/numa/toptree.c b/arch/s390/numa/toptree.c
deleted file mode 100644
index 71a608cd4f61..000000000000
--- a/arch/s390/numa/toptree.c
+++ /dev/null
@@ -1,351 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * NUMA support for s390
- *
- * A tree structure used for machine topology mangling
- *
- * Copyright IBM Corp. 2015
- */
-
-#include <linux/kernel.h>
-#include <linux/memblock.h>
-#include <linux/cpumask.h>
-#include <linux/list.h>
-#include <linux/list_sort.h>
-#include <linux/slab.h>
-#include <asm/numa.h>
-
-#include "toptree.h"
-
-/**
- * toptree_alloc - Allocate and initialize a new tree node.
- * @level: The node's vertical level; level 0 contains the leaves.
- * @id: ID number, explicitly not unique beyond scope of node's siblings
- *
- * Allocate a new tree node and initialize it.
- *
- * RETURNS:
- * Pointer to the new tree node or NULL on error
- */
-struct toptree __ref *toptree_alloc(int level, int id)
-{
- struct toptree *res;
-
- if (slab_is_available())
- res = kzalloc(sizeof(*res), GFP_KERNEL);
- else
- res = memblock_alloc(sizeof(*res), 8);
- if (!res)
- return res;
-
- INIT_LIST_HEAD(&res->children);
- INIT_LIST_HEAD(&res->sibling);
- cpumask_clear(&res->mask);
- res->level = level;
- res->id = id;
- return res;
-}
-
-/**
- * toptree_remove - Remove a tree node from a tree
- * @cand: Pointer to the node to remove
- *
- * The node is detached from its parent node. The parent node's
- * masks will be updated to reflect the loss of the child.
- */
-static void toptree_remove(struct toptree *cand)
-{
- struct toptree *oldparent;
-
- list_del_init(&cand->sibling);
- oldparent = cand->parent;
- cand->parent = NULL;
- toptree_update_mask(oldparent);
-}
-
-/**
- * toptree_free - discard a tree node
- * @cand: Pointer to the tree node to discard
- *
- * Checks if @cand is attached to a parent node. Detaches it
- * cleanly using toptree_remove. Possible children are freed
- * recursively. In the end @cand itself is freed.
- */
-void __ref toptree_free(struct toptree *cand)
-{
- struct toptree *child, *tmp;
-
- if (cand->parent)
- toptree_remove(cand);
- toptree_for_each_child_safe(child, tmp, cand)
- toptree_free(child);
- if (slab_is_available())
- kfree(cand);
- else
- memblock_free_early((unsigned long)cand, sizeof(*cand));
-}
-
-/**
- * toptree_update_mask - Update node bitmasks
- * @cand: Pointer to a tree node
- *
- * The node's cpumask will be updated by combining all children's
- * masks. Then toptree_update_mask is called recursively for the
- * parent if applicable.
- *
- * NOTE:
- * This must not be called on leaves. If called on a leaf, its
- * CPU mask is cleared and lost.
- */
-void toptree_update_mask(struct toptree *cand)
-{
- struct toptree *child;
-
- cpumask_clear(&cand->mask);
- list_for_each_entry(child, &cand->children, sibling)
- cpumask_or(&cand->mask, &cand->mask, &child->mask);
- if (cand->parent)
- toptree_update_mask(cand->parent);
-}
-
-/**
- * toptree_insert - Insert a tree node into tree
- * @cand: Pointer to the node to insert
- * @target: Pointer to the node to which @cand will added as a child
- *
- * Insert a tree node into a tree. Masks will be updated automatically.
- *
- * RETURNS:
- * 0 on success, -1 if NULL is passed as argument or the node levels
- * don't fit.
- */
-static int toptree_insert(struct toptree *cand, struct toptree *target)
-{
- if (!cand || !target)
- return -1;
- if (target->level != (cand->level + 1))
- return -1;
- list_add_tail(&cand->sibling, &target->children);
- cand->parent = target;
- toptree_update_mask(target);
- return 0;
-}
-
-/**
- * toptree_move_children - Move all child nodes of a node to a new place
- * @cand: Pointer to the node whose children are to be moved
- * @target: Pointer to the node to which @cand's children will be attached
- *
- * Take all child nodes of @cand and move them using toptree_move.
- */
-static void toptree_move_children(struct toptree *cand, struct toptree *target)
-{
- struct toptree *child, *tmp;
-
- toptree_for_each_child_safe(child, tmp, cand)
- toptree_move(child, target);
-}
-
-/**
- * toptree_unify - Merge children with same ID
- * @cand: Pointer to node whose direct children should be made unique
- *
- * When mangling the tree it is possible that a node has two or more children
- * which have the same ID. This routine merges these children into one and
- * moves all children of the merged nodes into the unified node.
- */
-void toptree_unify(struct toptree *cand)
-{
- struct toptree *child, *tmp, *cand_copy;
-
- /* Threads cannot be split, cores are not split */
- if (cand->level < 2)
- return;
-
- cand_copy = toptree_alloc(cand->level, 0);
- toptree_for_each_child_safe(child, tmp, cand) {
- struct toptree *tmpchild;
-
- if (!cpumask_empty(&child->mask)) {
- tmpchild = toptree_get_child(cand_copy, child->id);
- toptree_move_children(child, tmpchild);
- }
- toptree_free(child);
- }
- toptree_move_children(cand_copy, cand);
- toptree_free(cand_copy);
-
- toptree_for_each_child(child, cand)
- toptree_unify(child);
-}
-
-/**
- * toptree_move - Move a node to another context
- * @cand: Pointer to the node to move
- * @target: Pointer to the node where @cand should go
- *
- * In the easiest case @cand is exactly on the level below @target
- * and will be immediately moved to the target.
- *
- * If @target's level is not the direct parent level of @cand,
- * nodes for the missing levels are created and put between
- * @cand and @target. The "stacking" nodes' IDs are taken from
- * @cand's parents.
- *
- * After this it is likely to have redundant nodes in the tree
- * which are addressed by means of toptree_unify.
- */
-void toptree_move(struct toptree *cand, struct toptree *target)
-{
- struct toptree *stack_target, *real_insert_point, *ptr, *tmp;
-
- if (cand->level + 1 == target->level) {
- toptree_remove(cand);
- toptree_insert(cand, target);
- return;
- }
-
- real_insert_point = NULL;
- ptr = cand;
- stack_target = NULL;
-
- do {
- tmp = stack_target;
- stack_target = toptree_alloc(ptr->level + 1,
- ptr->parent->id);
- toptree_insert(tmp, stack_target);
- if (!real_insert_point)
- real_insert_point = stack_target;
- ptr = ptr->parent;
- } while (stack_target->level < (target->level - 1));
-
- toptree_remove(cand);
- toptree_insert(cand, real_insert_point);
- toptree_insert(stack_target, target);
-}
-
-/**
- * toptree_get_child - Access a tree node's child by its ID
- * @cand: Pointer to tree node whose child is to access
- * @id: The desired child's ID
- *
- * @cand's children are searched for a child with matching ID.
- * If no match can be found, a new child with the desired ID
- * is created and returned.
- */
-struct toptree *toptree_get_child(struct toptree *cand, int id)
-{
- struct toptree *child;
-
- toptree_for_each_child(child, cand)
- if (child->id == id)
- return child;
- child = toptree_alloc(cand->level-1, id);
- toptree_insert(child, cand);
- return child;
-}
-
-/**
- * toptree_first - Find the first descendant on specified level
- * @context: Pointer to tree node whose descendants are to be used
- * @level: The level of interest
- *
- * RETURNS:
- * @context's first descendant on the specified level, or NULL
- * if there is no matching descendant
- */
-struct toptree *toptree_first(struct toptree *context, int level)
-{
- struct toptree *child, *tmp;
-
- if (context->level == level)
- return context;
-
- if (!list_empty(&context->children)) {
- list_for_each_entry(child, &context->children, sibling) {
- tmp = toptree_first(child, level);
- if (tmp)
- return tmp;
- }
- }
- return NULL;
-}
-
-/**
- * toptree_next_sibling - Return next sibling
- * @cur: Pointer to a tree node
- *
- * RETURNS:
- * If @cur has a parent and is not the last in the parent's children list,
- * the next sibling is returned. Or NULL when there are no siblings left.
- */
-static struct toptree *toptree_next_sibling(struct toptree *cur)
-{
- if (cur->parent == NULL)
- return NULL;
-
- if (cur == list_last_entry(&cur->parent->children,
- struct toptree, sibling))
- return NULL;
- return (struct toptree *) list_next_entry(cur, sibling);
-}
-
-/**
- * toptree_next - Tree traversal function
- * @cur: Pointer to current element
- * @context: Pointer to the root node of the tree or subtree to
- * be traversed.
- * @level: The level of interest.
- *
- * RETURNS:
- * Pointer to the next node on level @level
- * or NULL when there is no next node.
- */
-struct toptree *toptree_next(struct toptree *cur, struct toptree *context,
- int level)
-{
- struct toptree *cur_context, *tmp;
-
- if (!cur)
- return NULL;
-
- if (context->level == level)
- return NULL;
-
- tmp = toptree_next_sibling(cur);
- if (tmp != NULL)
- return tmp;
-
- cur_context = cur;
- while (cur_context->level < context->level - 1) {
- /* Step up */
- cur_context = cur_context->parent;
- /* Step aside */
- tmp = toptree_next_sibling(cur_context);
- if (tmp != NULL) {
- /* Step down */
- tmp = toptree_first(tmp, level);
- if (tmp != NULL)
- return tmp;
- }
- }
- return NULL;
-}
-
-/**
- * toptree_count - Count descendants on specified level
- * @context: Pointer to node whose descendants are to be considered
- * @level: Only descendants on the specified level will be counted
- *
- * RETURNS:
- * Number of descendants on the specified level
- */
-int toptree_count(struct toptree *context, int level)
-{
- struct toptree *cur;
- int cnt = 0;
-
- toptree_for_each(cur, context, level)
- cnt++;
- return cnt;
-}
diff --git a/arch/s390/numa/toptree.h b/arch/s390/numa/toptree.h
deleted file mode 100644
index 5246371ec713..000000000000
--- a/arch/s390/numa/toptree.h
+++ /dev/null
@@ -1,61 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * NUMA support for s390
- *
- * A tree structure used for machine topology mangling
- *
- * Copyright IBM Corp. 2015
- */
-#ifndef S390_TOPTREE_H
-#define S390_TOPTREE_H
-
-#include <linux/cpumask.h>
-#include <linux/list.h>
-
-struct toptree {
- int level;
- int id;
- cpumask_t mask;
- struct toptree *parent;
- struct list_head sibling;
- struct list_head children;
-};
-
-struct toptree *toptree_alloc(int level, int id);
-void toptree_free(struct toptree *cand);
-void toptree_update_mask(struct toptree *cand);
-void toptree_unify(struct toptree *cand);
-struct toptree *toptree_get_child(struct toptree *cand, int id);
-void toptree_move(struct toptree *cand, struct toptree *target);
-int toptree_count(struct toptree *context, int level);
-
-struct toptree *toptree_first(struct toptree *context, int level);
-struct toptree *toptree_next(struct toptree *cur, struct toptree *context,
- int level);
-
-#define toptree_for_each_child(child, ptree) \
- list_for_each_entry(child, &ptree->children, sibling)
-
-#define toptree_for_each_child_safe(child, ptmp, ptree) \
- list_for_each_entry_safe(child, ptmp, &ptree->children, sibling)
-
-#define toptree_is_last(ptree) \
- ((ptree->parent == NULL) || \
- (ptree->parent->children.prev == &ptree->sibling))
-
-#define toptree_for_each(ptree, cont, ttype) \
- for (ptree = toptree_first(cont, ttype); \
- ptree != NULL; \
- ptree = toptree_next(ptree, cont, ttype))
-
-#define toptree_for_each_safe(ptree, tmp, cont, ttype) \
- for (ptree = toptree_first(cont, ttype), \
- tmp = toptree_next(ptree, cont, ttype); \
- ptree != NULL; \
- ptree = tmp, \
- tmp = toptree_next(ptree, cont, ttype))
-
-#define toptree_for_each_sibling(ptree, start) \
- toptree_for_each(ptree, start->parent, start->level)
-
-#endif /* S390_TOPTREE_H */
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index 60716d18ce5a..94ca121933de 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -40,8 +40,9 @@
static LIST_HEAD(zpci_list);
static DEFINE_SPINLOCK(zpci_list_lock);
-static DECLARE_BITMAP(zpci_domain, ZPCI_NR_DEVICES);
+static DECLARE_BITMAP(zpci_domain, ZPCI_DOMAIN_BITMAP_SIZE);
static DEFINE_SPINLOCK(zpci_domain_lock);
+static unsigned int zpci_num_domains_allocated;
#define ZPCI_IOMAP_ENTRIES \
min(((unsigned long) ZPCI_NR_DEVICES * PCI_STD_NUM_BARS / 2), \
@@ -607,57 +608,25 @@ void pcibios_disable_device(struct pci_dev *pdev)
zpci_debug_exit_device(zdev);
}
-#ifdef CONFIG_HIBERNATE_CALLBACKS
-static int zpci_restore(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct zpci_dev *zdev = to_zpci(pdev);
- int ret = 0;
-
- if (zdev->state != ZPCI_FN_STATE_ONLINE)
- goto out;
-
- ret = clp_enable_fh(zdev, ZPCI_NR_DMA_SPACES);
- if (ret)
- goto out;
-
- zpci_map_resources(pdev);
- zpci_register_ioat(zdev, 0, zdev->start_dma, zdev->end_dma,
- (u64) zdev->dma_table);
-
-out:
- return ret;
-}
-
-static int zpci_freeze(struct device *dev)
-{
- struct pci_dev *pdev = to_pci_dev(dev);
- struct zpci_dev *zdev = to_zpci(pdev);
-
- if (zdev->state != ZPCI_FN_STATE_ONLINE)
- return 0;
-
- zpci_unregister_ioat(zdev, 0);
- zpci_unmap_resources(pdev);
- return clp_disable_fh(zdev);
-}
-
-struct dev_pm_ops pcibios_pm_ops = {
- .thaw_noirq = zpci_restore,
- .freeze_noirq = zpci_freeze,
- .restore_noirq = zpci_restore,
- .poweroff_noirq = zpci_freeze,
-};
-#endif /* CONFIG_HIBERNATE_CALLBACKS */
-
static int zpci_alloc_domain(struct zpci_dev *zdev)
{
+ spin_lock(&zpci_domain_lock);
+ if (zpci_num_domains_allocated > (ZPCI_NR_DEVICES - 1)) {
+ spin_unlock(&zpci_domain_lock);
+ pr_err("Adding PCI function %08x failed because the configured limit of %d is reached\n",
+ zdev->fid, ZPCI_NR_DEVICES);
+ return -ENOSPC;
+ }
+
if (zpci_unique_uid) {
zdev->domain = (u16) zdev->uid;
- if (zdev->domain >= ZPCI_NR_DEVICES)
- return 0;
+ if (zdev->domain == 0) {
+ pr_warn("UID checking is active but no UID is set for PCI function %08x, so automatic domain allocation is used instead\n",
+ zdev->fid);
+ update_uid_checking(false);
+ goto auto_allocate;
+ }
- spin_lock(&zpci_domain_lock);
if (test_bit(zdev->domain, zpci_domain)) {
spin_unlock(&zpci_domain_lock);
pr_err("Adding PCI function %08x failed because domain %04x is already assigned\n",
@@ -665,30 +634,28 @@ static int zpci_alloc_domain(struct zpci_dev *zdev)
return -EEXIST;
}
set_bit(zdev->domain, zpci_domain);
+ zpci_num_domains_allocated++;
spin_unlock(&zpci_domain_lock);
return 0;
}
-
- spin_lock(&zpci_domain_lock);
+auto_allocate:
+ /*
+ * We can always auto allocate domains below ZPCI_NR_DEVICES.
+ * There is either a free domain or we have reached the maximum in
+ * which case we would have bailed earlier.
+ */
zdev->domain = find_first_zero_bit(zpci_domain, ZPCI_NR_DEVICES);
- if (zdev->domain == ZPCI_NR_DEVICES) {
- spin_unlock(&zpci_domain_lock);
- pr_err("Adding PCI function %08x failed because the configured limit of %d is reached\n",
- zdev->fid, ZPCI_NR_DEVICES);
- return -ENOSPC;
- }
set_bit(zdev->domain, zpci_domain);
+ zpci_num_domains_allocated++;
spin_unlock(&zpci_domain_lock);
return 0;
}
static void zpci_free_domain(struct zpci_dev *zdev)
{
- if (zdev->domain >= ZPCI_NR_DEVICES)
- return;
-
spin_lock(&zpci_domain_lock);
clear_bit(zdev->domain, zpci_domain);
+ zpci_num_domains_allocated--;
spin_unlock(&zpci_domain_lock);
}
diff --git a/arch/s390/pci/pci_clp.c b/arch/s390/pci/pci_clp.c
index 0d3d8f170ea4..ea794ae755ae 100644
--- a/arch/s390/pci/pci_clp.c
+++ b/arch/s390/pci/pci_clp.c
@@ -24,7 +24,7 @@
bool zpci_unique_uid;
-static void update_uid_checking(bool new)
+void update_uid_checking(bool new)
{
if (zpci_unique_uid != new)
zpci_dbg(1, "uid checking:%d\n", new);
diff --git a/arch/s390/purgatory/.gitignore b/arch/s390/purgatory/.gitignore
index c82157f46b18..97ca52779457 100644
--- a/arch/s390/purgatory/.gitignore
+++ b/arch/s390/purgatory/.gitignore
@@ -1,3 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
purgatory
purgatory.chk
purgatory.lds
diff --git a/arch/s390/tools/.gitignore b/arch/s390/tools/.gitignore
index 71bd6f8eebaf..ea62f37b79ef 100644
--- a/arch/s390/tools/.gitignore
+++ b/arch/s390/tools/.gitignore
@@ -1,2 +1,3 @@
+# SPDX-License-Identifier: GPL-2.0-only
gen_facilities
gen_opcode_table