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authorLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 13:49:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-04-15 13:49:27 -0700
commite44740c1a94b5d39b093045920f543a7bc135584 (patch)
tree3dc097e078653cc520476ac997e1765b90703a56 /arch
parentd613896926be608796bb80454256a07b55fe0e87 (diff)
parentfe205bdd1321f95f8f3c35d243ea7cb22af8fbe1 (diff)
downloadlinux-e44740c1a94b5d39b093045920f543a7bc135584.tar.bz2
Merge tag 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml
Pull UML updates from Richard Weinberger: - hostfs saw a face lifting - old/broken stuff was removed (SMP, HIGHMEM, SKAS3/4) - random cleanups and bug fixes * tag 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml: (26 commits) um: Print minimum physical memory requirement um: Move uml_postsetup in the init_thread stack um: add a kmsg_dumper x86, UML: fix integer overflow in ELF_ET_DYN_BASE um: hostfs: Reduce number of syscalls in readdir um: Remove broken highmem support um: Remove broken SMP support um: Remove SKAS3/4 support um: Remove ppc cruft um: Remove ia64 cruft um: Remove dead code from stacktrace hostfs: No need to box and later unbox the file mode hostfs: Use page_offset() hostfs: Set page flags in hostfs_readpage() correctly hostfs: Remove superfluous initializations in hostfs_open() hostfs: hostfs_open: Reset open flags upon each retry hostfs: Remove superfluous test in hostfs_open() hostfs: Report append flag in ->show_options() hostfs: Use __getname() in follow_link hostfs: Remove open coded strcpy() ...
Diffstat (limited to 'arch')
-rw-r--r--arch/um/Kconfig.um42
-rw-r--r--arch/um/Makefile-ia641
-rw-r--r--arch/um/Makefile-ppc9
-rw-r--r--arch/um/include/asm/fixmap.h4
-rw-r--r--arch/um/include/asm/pgtable.h6
-rw-r--r--arch/um/include/asm/processor-generic.h8
-rw-r--r--arch/um/include/asm/smp.h26
-rw-r--r--arch/um/include/shared/as-layout.h1
-rw-r--r--arch/um/include/shared/os.h2
-rw-r--r--arch/um/include/shared/skas/proc_mm.h44
-rw-r--r--arch/um/include/shared/skas/skas.h3
-rw-r--r--arch/um/include/shared/skas_ptrace.h14
-rw-r--r--arch/um/kernel/Makefile4
-rw-r--r--arch/um/kernel/irq.c3
-rw-r--r--arch/um/kernel/kmsg_dump.c43
-rw-r--r--arch/um/kernel/mem.c66
-rw-r--r--arch/um/kernel/physmem.c41
-rw-r--r--arch/um/kernel/process.c11
-rw-r--r--arch/um/kernel/ptrace.c32
-rw-r--r--arch/um/kernel/reboot.c35
-rw-r--r--arch/um/kernel/skas/mmu.c68
-rw-r--r--arch/um/kernel/skas/process.c31
-rw-r--r--arch/um/kernel/smp.c238
-rw-r--r--arch/um/kernel/sysrq.c6
-rw-r--r--arch/um/kernel/trap.c2
-rw-r--r--arch/um/kernel/um_arch.c67
-rw-r--r--arch/um/os-Linux/process.c16
-rw-r--r--arch/um/os-Linux/skas/mem.c100
-rw-r--r--arch/um/os-Linux/skas/process.c202
-rw-r--r--arch/um/os-Linux/start_up.c154
-rw-r--r--arch/um/sys-ia64/Makefile11
-rw-r--r--arch/um/sys-ia64/sysdep/ptrace.h16
-rw-r--r--arch/um/sys-ia64/sysdep/sigcontext.h10
-rw-r--r--arch/um/sys-ia64/sysdep/skas_ptrace.h22
-rw-r--r--arch/um/sys-ia64/sysdep/syscalls.h10
-rw-r--r--arch/um/sys-ppc/Makefile65
-rw-r--r--arch/um/sys-ppc/asm/archparam.h8
-rw-r--r--arch/um/sys-ppc/asm/elf.h51
-rw-r--r--arch/um/sys-ppc/asm/processor.h15
-rw-r--r--arch/um/sys-ppc/misc.S111
-rw-r--r--arch/um/sys-ppc/miscthings.c42
-rw-r--r--arch/um/sys-ppc/ptrace.c58
-rw-r--r--arch/um/sys-ppc/ptrace_user.c29
-rw-r--r--arch/um/sys-ppc/shared/sysdep/ptrace.h93
-rw-r--r--arch/um/sys-ppc/shared/sysdep/sigcontext.h52
-rw-r--r--arch/um/sys-ppc/shared/sysdep/skas_ptrace.h22
-rw-r--r--arch/um/sys-ppc/shared/sysdep/syscalls.h43
-rw-r--r--arch/um/sys-ppc/sigcontext.c4
-rw-r--r--arch/um/sys-ppc/sysrq.c33
-rw-r--r--arch/x86/um/Makefile1
-rw-r--r--arch/x86/um/asm/barrier.h11
-rw-r--r--arch/x86/um/asm/elf.h2
-rw-r--r--arch/x86/um/ldt.c227
-rw-r--r--arch/x86/um/shared/sysdep/faultinfo_32.h3
-rw-r--r--arch/x86/um/shared/sysdep/faultinfo_64.h3
-rw-r--r--arch/x86/um/shared/sysdep/skas_ptrace.h22
56 files changed, 246 insertions, 1997 deletions
diff --git a/arch/um/Kconfig.um b/arch/um/Kconfig.um
index 5dbfe3d9107c..6e67847f5272 100644
--- a/arch/um/Kconfig.um
+++ b/arch/um/Kconfig.um
@@ -95,48 +95,6 @@ config MAGIC_SYSRQ
The keys are documented in <file:Documentation/sysrq.txt>. Don't say Y
unless you really know what this hack does.
-config SMP
- bool "Symmetric multi-processing support"
- default n
- depends on BROKEN
- help
- This option enables UML SMP support.
- It is NOT related to having a real SMP box. Not directly, at least.
-
- UML implements virtual SMP by allowing as many processes to run
- simultaneously on the host as there are virtual processors configured.
-
- Obviously, if the host is a uniprocessor, those processes will
- timeshare, but, inside UML, will appear to be running simultaneously.
- If the host is a multiprocessor, then UML processes may run
- simultaneously, depending on the host scheduler.
-
- This, however, is supported only in TT mode. So, if you use the SKAS
- patch on your host, switching to TT mode and enabling SMP usually
- gives you worse performances.
- Also, since the support for SMP has been under-developed, there could
- be some bugs being exposed by enabling SMP.
-
- If you don't know what to do, say N.
-
-config NR_CPUS
- int "Maximum number of CPUs (2-32)"
- range 2 32
- depends on SMP
- default "32"
-
-config HIGHMEM
- bool "Highmem support"
- depends on !64BIT && BROKEN
- default n
- help
- This was used to allow UML to run with big amounts of memory.
- Currently it is unstable, so if unsure say N.
-
- To use big amounts of memory, it is recommended enable static
- linking (i.e. CONFIG_STATIC_LINK) - this should allow the
- guest to use up to 2.75G of memory.
-
config KERNEL_STACK_ORDER
int "Kernel stack size order"
default 1 if 64BIT
diff --git a/arch/um/Makefile-ia64 b/arch/um/Makefile-ia64
deleted file mode 100644
index f84dc23b0f6e..000000000000
--- a/arch/um/Makefile-ia64
+++ /dev/null
@@ -1 +0,0 @@
-START_ADDR = 0x1000000000000000
diff --git a/arch/um/Makefile-ppc b/arch/um/Makefile-ppc
deleted file mode 100644
index 66fd2003e165..000000000000
--- a/arch/um/Makefile-ppc
+++ /dev/null
@@ -1,9 +0,0 @@
-ifeq ($(CONFIG_HOST_2G_2G), y)
-START_ADDR = 0x80000000
-else
-START_ADDR = 0xc0000000
-endif
-ARCH_CFLAGS = -U__powerpc__ -D__UM_PPC__
-
-# The arch is ppc, but the elf32 name is powerpc
-ELF_SUBARCH = powerpc
diff --git a/arch/um/include/asm/fixmap.h b/arch/um/include/asm/fixmap.h
index 3094ea3c73b0..1761fd75bf13 100644
--- a/arch/um/include/asm/fixmap.h
+++ b/arch/um/include/asm/fixmap.h
@@ -33,10 +33,6 @@
* fix-mapped?
*/
enum fixed_addresses {
-#ifdef CONFIG_HIGHMEM
- FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
- FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
-#endif
__end_of_fixed_addresses
};
diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h
index 2324b624f195..18eb9924dda3 100644
--- a/arch/um/include/asm/pgtable.h
+++ b/arch/um/include/asm/pgtable.h
@@ -47,11 +47,7 @@ extern unsigned long end_iomem;
#define VMALLOC_OFFSET (__va_space)
#define VMALLOC_START ((end_iomem + VMALLOC_OFFSET) & ~(VMALLOC_OFFSET-1))
#define PKMAP_BASE ((FIXADDR_START - LAST_PKMAP * PAGE_SIZE) & PMD_MASK)
-#ifdef CONFIG_HIGHMEM
-# define VMALLOC_END (PKMAP_BASE-2*PAGE_SIZE)
-#else
-# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
-#endif
+#define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
#define MODULES_VADDR VMALLOC_START
#define MODULES_END VMALLOC_END
#define MODULES_LEN (MODULES_VADDR - MODULES_END)
diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h
index cbc5edd5a901..2d1e0dd5bb0b 100644
--- a/arch/um/include/asm/processor-generic.h
+++ b/arch/um/include/asm/processor-generic.h
@@ -98,16 +98,8 @@ struct cpuinfo_um {
extern struct cpuinfo_um boot_cpu_data;
-#define my_cpu_data cpu_data[smp_processor_id()]
-
-#ifdef CONFIG_SMP
-extern struct cpuinfo_um cpu_data[];
-#define current_cpu_data cpu_data[smp_processor_id()]
-#else
#define cpu_data (&boot_cpu_data)
#define current_cpu_data boot_cpu_data
-#endif
-
#define KSTK_REG(tsk, reg) get_thread_reg(reg, &tsk->thread.switch_buf)
extern unsigned long get_wchan(struct task_struct *p);
diff --git a/arch/um/include/asm/smp.h b/arch/um/include/asm/smp.h
index e4507938d8cf..9c3be355ed01 100644
--- a/arch/um/include/asm/smp.h
+++ b/arch/um/include/asm/smp.h
@@ -1,32 +1,6 @@
#ifndef __UM_SMP_H
#define __UM_SMP_H
-#ifdef CONFIG_SMP
-
-#include <linux/bitops.h>
-#include <asm/current.h>
-#include <linux/cpumask.h>
-
-#define raw_smp_processor_id() (current_thread->cpu)
-
-#define cpu_logical_map(n) (n)
-#define cpu_number_map(n) (n)
-extern int hard_smp_processor_id(void);
-#define NO_PROC_ID -1
-
-extern int ncpus;
-
-
-static inline void smp_cpus_done(unsigned int maxcpus)
-{
-}
-
-extern struct task_struct *idle_threads[NR_CPUS];
-
-#else
-
#define hard_smp_processor_id() 0
#endif
-
-#endif
diff --git a/arch/um/include/shared/as-layout.h b/arch/um/include/shared/as-layout.h
index 41c8c774ec10..ca1843e1df15 100644
--- a/arch/um/include/shared/as-layout.h
+++ b/arch/um/include/shared/as-layout.h
@@ -56,6 +56,7 @@ extern unsigned long brk_start;
extern unsigned long host_task_size;
extern int linux_main(int argc, char **argv);
+extern void uml_finishsetup(void);
struct siginfo;
extern void (*sig_info[])(int, struct siginfo *si, struct uml_pt_regs *);
diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h
index 08eec0b691b0..d824528f6f62 100644
--- a/arch/um/include/shared/os.h
+++ b/arch/um/include/shared/os.h
@@ -174,7 +174,6 @@ extern unsigned long long os_makedev(unsigned major, unsigned minor);
/* start_up.c */
extern void os_early_checks(void);
-extern void can_do_skas(void);
extern void os_check_bugs(void);
extern void check_host_supports_tls(int *supports_tls, int *tls_min);
@@ -187,7 +186,6 @@ extern int os_process_parent(int pid);
extern void os_stop_process(int pid);
extern void os_kill_process(int pid, int reap_child);
extern void os_kill_ptraced_process(int pid, int reap_child);
-extern long os_ptrace_ldt(long pid, long addr, long data);
extern int os_getpid(void);
extern int os_getpgrp(void);
diff --git a/arch/um/include/shared/skas/proc_mm.h b/arch/um/include/shared/skas/proc_mm.h
deleted file mode 100644
index 902809209603..000000000000
--- a/arch/um/include/shared/skas/proc_mm.h
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SKAS_PROC_MM_H
-#define __SKAS_PROC_MM_H
-
-#define MM_MMAP 54
-#define MM_MUNMAP 55
-#define MM_MPROTECT 56
-#define MM_COPY_SEGMENTS 57
-
-struct mm_mmap {
- unsigned long addr;
- unsigned long len;
- unsigned long prot;
- unsigned long flags;
- unsigned long fd;
- unsigned long offset;
-};
-
-struct mm_munmap {
- unsigned long addr;
- unsigned long len;
-};
-
-struct mm_mprotect {
- unsigned long addr;
- unsigned long len;
- unsigned int prot;
-};
-
-struct proc_mm_op {
- int op;
- union {
- struct mm_mmap mmap;
- struct mm_munmap munmap;
- struct mm_mprotect mprotect;
- int copy_segments;
- } u;
-};
-
-#endif
diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h
index c45df961c874..911f3c45ad1f 100644
--- a/arch/um/include/shared/skas/skas.h
+++ b/arch/um/include/shared/skas/skas.h
@@ -9,13 +9,10 @@
#include <sysdep/ptrace.h>
extern int userspace_pid[];
-extern int proc_mm, ptrace_faultinfo, ptrace_ldt;
-extern int skas_needs_stub;
extern int user_thread(unsigned long stack, int flags);
extern void new_thread_handler(void);
extern void handle_syscall(struct uml_pt_regs *regs);
-extern int new_mm(unsigned long stack);
extern long execute_syscall_skas(void *r);
extern unsigned long current_stub_stack(void);
diff --git a/arch/um/include/shared/skas_ptrace.h b/arch/um/include/shared/skas_ptrace.h
deleted file mode 100644
index 630a9c92b93c..000000000000
--- a/arch/um/include/shared/skas_ptrace.h
+++ /dev/null
@@ -1,14 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-
-#ifndef __SKAS_PTRACE_H
-#define __SKAS_PTRACE_H
-
-#define PTRACE_FAULTINFO 52
-#define PTRACE_SWITCH_MM 55
-
-#include <sysdep/skas_ptrace.h>
-
-#endif
diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile
index 2d840a070c8b..a6a5e42caaef 100644
--- a/arch/um/kernel/Makefile
+++ b/arch/um/kernel/Makefile
@@ -12,8 +12,8 @@ clean-files :=
obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \
physmem.o process.o ptrace.o reboot.o sigio.o \
- signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \
- um_arch.o umid.o maccess.o skas/
+ signal.o syscall.o sysrq.o time.o tlb.o trap.o \
+ um_arch.o umid.o maccess.o kmsg_dump.o skas/
obj-$(CONFIG_BLK_DEV_INITRD) += initrd.o
obj-$(CONFIG_GPROF) += gprof_syms.o
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 1d8505b1e290..23cb9350d47e 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -35,9 +35,6 @@ void sigio_handler(int sig, struct siginfo *unused_si, struct uml_pt_regs *regs)
struct irq_fd *irq_fd;
int n;
- if (smp_sigio_handler())
- return;
-
while (1) {
n = os_waiting_for_events(active_fds);
if (n <= 0) {
diff --git a/arch/um/kernel/kmsg_dump.c b/arch/um/kernel/kmsg_dump.c
new file mode 100644
index 000000000000..407d49251d6f
--- /dev/null
+++ b/arch/um/kernel/kmsg_dump.c
@@ -0,0 +1,43 @@
+#include <linux/kmsg_dump.h>
+#include <linux/console.h>
+#include <shared/init.h>
+#include <shared/kern.h>
+#include <os.h>
+
+static void kmsg_dumper_stdout(struct kmsg_dumper *dumper,
+ enum kmsg_dump_reason reason)
+{
+ static char line[1024];
+
+ size_t len = 0;
+ bool con_available = false;
+
+ /* only dump kmsg when no console is available */
+ if (!console_trylock())
+ return;
+
+ if (console_drivers != NULL)
+ con_available = true;
+
+ console_unlock();
+
+ if (con_available == true)
+ return;
+
+ printf("kmsg_dump:\n");
+ while (kmsg_dump_get_line(dumper, true, line, sizeof(line), &len)) {
+ line[len] = '\0';
+ printf("%s", line);
+ }
+}
+
+static struct kmsg_dumper kmsg_dumper = {
+ .dump = kmsg_dumper_stdout
+};
+
+int __init kmsg_dumper_stdout_init(void)
+{
+ return kmsg_dump_register(&kmsg_dumper);
+}
+
+__uml_postsetup(kmsg_dumper_stdout_init);
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index 8636e905426f..b2a2dff50b4e 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -38,19 +38,6 @@ int kmalloc_ok = 0;
/* Used during early boot */
static unsigned long brk_end;
-#ifdef CONFIG_HIGHMEM
-static void setup_highmem(unsigned long highmem_start,
- unsigned long highmem_len)
-{
- unsigned long highmem_pfn;
- int i;
-
- highmem_pfn = __pa(highmem_start) >> PAGE_SHIFT;
- for (i = 0; i < highmem_len >> PAGE_SHIFT; i++)
- free_highmem_page(&mem_map[highmem_pfn + i]);
-}
-#endif
-
void __init mem_init(void)
{
/* clear the zero-page */
@@ -67,9 +54,6 @@ void __init mem_init(void)
/* this will put all low memory onto the freelists */
free_all_bootmem();
max_low_pfn = totalram_pages;
-#ifdef CONFIG_HIGHMEM
- setup_highmem(end_iomem, highmem);
-#endif
max_pfn = totalram_pages;
mem_init_print_info(NULL);
kmalloc_ok = 1;
@@ -127,49 +111,6 @@ static void __init fixrange_init(unsigned long start, unsigned long end,
}
}
-#ifdef CONFIG_HIGHMEM
-pte_t *kmap_pte;
-pgprot_t kmap_prot;
-
-#define kmap_get_fixmap_pte(vaddr) \
- pte_offset_kernel(pmd_offset(pud_offset(pgd_offset_k(vaddr), (vaddr)),\
- (vaddr)), (vaddr))
-
-static void __init kmap_init(void)
-{
- unsigned long kmap_vstart;
-
- /* cache the first kmap pte */
- kmap_vstart = __fix_to_virt(FIX_KMAP_BEGIN);
- kmap_pte = kmap_get_fixmap_pte(kmap_vstart);
-
- kmap_prot = PAGE_KERNEL;
-}
-
-static void __init init_highmem(void)
-{
- pgd_t *pgd;
- pud_t *pud;
- pmd_t *pmd;
- pte_t *pte;
- unsigned long vaddr;
-
- /*
- * Permanent kmaps:
- */
- vaddr = PKMAP_BASE;
- fixrange_init(vaddr, vaddr + PAGE_SIZE*LAST_PKMAP, swapper_pg_dir);
-
- pgd = swapper_pg_dir + pgd_index(vaddr);
- pud = pud_offset(pgd, vaddr);
- pmd = pmd_offset(pud, vaddr);
- pte = pte_offset_kernel(pmd, vaddr);
- pkmap_page_table = pte;
-
- kmap_init();
-}
-#endif /* CONFIG_HIGHMEM */
-
static void __init fixaddr_user_init( void)
{
#ifdef CONFIG_ARCH_REUSE_HOST_VSYSCALL_AREA
@@ -211,9 +152,6 @@ void __init paging_init(void)
zones_size[ZONE_NORMAL] = (end_iomem >> PAGE_SHIFT) -
(uml_physmem >> PAGE_SHIFT);
-#ifdef CONFIG_HIGHMEM
- zones_size[ZONE_HIGHMEM] = highmem >> PAGE_SHIFT;
-#endif
free_area_init(zones_size);
/*
@@ -224,10 +162,6 @@ void __init paging_init(void)
fixrange_init(vaddr, FIXADDR_TOP, swapper_pg_dir);
fixaddr_user_init();
-
-#ifdef CONFIG_HIGHMEM
- init_highmem();
-#endif
}
/*
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 549ecf3f5857..9034fc8056b4 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -57,22 +57,51 @@ void map_memory(unsigned long virt, unsigned long phys, unsigned long len,
extern int __syscall_stub_start;
+/**
+ * setup_physmem() - Setup physical memory for UML
+ * @start: Start address of the physical kernel memory,
+ * i.e start address of the executable image.
+ * @reserve_end: end address of the physical kernel memory.
+ * @len: Length of total physical memory that should be mapped/made
+ * available, in bytes.
+ * @highmem: Number of highmem bytes that should be mapped/made available.
+ *
+ * Creates an unlinked temporary file of size (len + highmem) and memory maps
+ * it on the last executable image address (uml_reserved).
+ *
+ * The offset is needed as the length of the total physical memory
+ * (len + highmem) includes the size of the memory used be the executable image,
+ * but the mapped-to address is the last address of the executable image
+ * (uml_reserved == end address of executable image).
+ *
+ * The memory mapped memory of the temporary file is used as backing memory
+ * of all user space processes/kernel tasks.
+ */
void __init setup_physmem(unsigned long start, unsigned long reserve_end,
unsigned long len, unsigned long long highmem)
{
unsigned long reserve = reserve_end - start;
- int pfn = PFN_UP(__pa(reserve_end));
- int delta = (len - reserve) >> PAGE_SHIFT;
- int err, offset, bootmap_size;
+ unsigned long pfn = PFN_UP(__pa(reserve_end));
+ unsigned long delta = (len - reserve) >> PAGE_SHIFT;
+ unsigned long offset, bootmap_size;
+ long map_size;
+ int err;
+
+ offset = uml_reserved - uml_physmem;
+ map_size = len - offset;
+ if(map_size <= 0) {
+ printf("Too few physical memory! Needed=%d, given=%d\n",
+ offset, len);
+ exit(1);
+ }
physmem_fd = create_mem_file(len + highmem);
- offset = uml_reserved - uml_physmem;
err = os_map_memory((void *) uml_reserved, physmem_fd, offset,
- len - offset, 1, 1, 1);
+ map_size, 1, 1, 1);
if (err < 0) {
printf("setup_physmem - mapping %ld bytes of memory at 0x%p "
- "failed - errno = %d\n", len - offset,
+ "failed - errno = %d\n", map_size,
(void *) uml_reserved, err);
exit(1);
}
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index f17bca8ed2ce..68b9119841cd 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -259,17 +259,6 @@ int strlen_user_proc(char __user *str)
return strlen_user(str);
}
-int smp_sigio_handler(void)
-{
-#ifdef CONFIG_SMP
- int cpu = current_thread_info()->cpu;
- IPI_handler(cpu);
- if (cpu != 0)
- return 1;
-#endif
- return 0;
-}
-
int cpu(void)
{
return current_thread_info()->cpu;
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 62435ef003d9..174ee5017264 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -8,9 +8,6 @@
#include <linux/sched.h>
#include <linux/tracehook.h>
#include <asm/uaccess.h>
-#include <skas_ptrace.h>
-
-
void user_enable_single_step(struct task_struct *child)
{
@@ -104,35 +101,6 @@ long arch_ptrace(struct task_struct *child, long request,
ret = ptrace_set_thread_area(child, addr, vp);
break;
- case PTRACE_FAULTINFO: {
- /*
- * Take the info from thread->arch->faultinfo,
- * but transfer max. sizeof(struct ptrace_faultinfo).
- * On i386, ptrace_faultinfo is smaller!
- */
- ret = copy_to_user(p, &child->thread.arch.faultinfo,
- sizeof(struct ptrace_faultinfo)) ?
- -EIO : 0;
- break;
- }
-
-#ifdef PTRACE_LDT
- case PTRACE_LDT: {
- struct ptrace_ldt ldt;
-
- if (copy_from_user(&ldt, p, sizeof(ldt))) {
- ret = -EIO;
- break;
- }
-
- /*
- * This one is confusing, so just punt and return -EIO for
- * now
- */
- ret = -EIO;
- break;
- }
-#endif
default:
ret = ptrace_request(child, request, addr, data);
if (ret == -EIO)
diff --git a/arch/um/kernel/reboot.c b/arch/um/kernel/reboot.c
index ced8903921ae..9bdf67a092a5 100644
--- a/arch/um/kernel/reboot.c
+++ b/arch/um/kernel/reboot.c
@@ -15,28 +15,21 @@ void (*pm_power_off)(void);
static void kill_off_processes(void)
{
- if (proc_mm)
- /*
- * FIXME: need to loop over userspace_pids
- */
- os_kill_ptraced_process(userspace_pid[0], 1);
- else {
- struct task_struct *p;
- int pid;
-
- read_lock(&tasklist_lock);
- for_each_process(p) {
- struct task_struct *t;
-
- t = find_lock_task_mm(p);
- if (!t)
- continue;
- pid = t->mm->context.id.u.pid;
- task_unlock(t);
- os_kill_ptraced_process(pid, 1);
- }
- read_unlock(&tasklist_lock);
+ struct task_struct *p;
+ int pid;
+
+ read_lock(&tasklist_lock);
+ for_each_process(p) {
+ struct task_struct *t;
+
+ t = find_lock_task_mm(p);
+ if (!t)
+ continue;
+ pid = t->mm->context.id.u.pid;
+ task_unlock(t);
+ os_kill_ptraced_process(pid, 1);
}
+ read_unlock(&tasklist_lock);
}
void uml_cleanup(void)
diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c
index 007d5503f49b..94abdcc1d6ad 100644
--- a/arch/um/kernel/skas/mmu.c
+++ b/arch/um/kernel/skas/mmu.c
@@ -54,35 +54,22 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm)
unsigned long stack = 0;
int ret = -ENOMEM;
- if (skas_needs_stub) {
- stack = get_zeroed_page(GFP_KERNEL);
- if (stack == 0)
- goto out;
- }
+ stack = get_zeroed_page(GFP_KERNEL);
+ if (stack == 0)
+ goto out;
to_mm->id.stack = stack;
if (current->mm != NULL && current->mm != &init_mm)
from_mm = &current->mm->context;
- if (proc_mm) {
- ret = new_mm(stack);
- if (ret < 0) {
- printk(KERN_ERR "init_new_context_skas - "
- "new_mm failed, errno = %d\n", ret);
- goto out_free;
- }
- to_mm->id.u.mm_fd = ret;
- }
- else {
- if (from_mm)
- to_mm->id.u.pid = copy_context_skas0(stack,
- from_mm->id.u.pid);
- else to_mm->id.u.pid = start_userspace(stack);
-
- if (to_mm->id.u.pid < 0) {
- ret = to_mm->id.u.pid;
- goto out_free;
- }
+ if (from_mm)
+ to_mm->id.u.pid = copy_context_skas0(stack,
+ from_mm->id.u.pid);
+ else to_mm->id.u.pid = start_userspace(stack);
+
+ if (to_mm->id.u.pid < 0) {
+ ret = to_mm->id.u.pid;
+ goto out_free;
}
ret = init_new_ldt(to_mm, from_mm);
@@ -105,9 +92,6 @@ void uml_setup_stubs(struct mm_struct *mm)
{
int err, ret;
- if (!skas_needs_stub)
- return;
-
ret = init_stub_pte(mm, STUB_CODE,
(unsigned long) &__syscall_stub_start);
if (ret)
@@ -154,25 +138,19 @@ void destroy_context(struct mm_struct *mm)
{
struct mm_context *mmu = &mm->context;
- if (proc_mm)
- os_close_file(mmu->id.u.mm_fd);
- else {
- /*
- * If init_new_context wasn't called, this will be
- * zero, resulting in a kill(0), which will result in the
- * whole UML suddenly dying. Also, cover negative and
- * 1 cases, since they shouldn't happen either.
- */
- if (mmu->id.u.pid < 2) {
- printk(KERN_ERR "corrupt mm_context - pid = %d\n",
- mmu->id.u.pid);
- return;
- }
- os_kill_ptraced_process(mmu->id.u.pid, 1);
+ /*
+ * If init_new_context wasn't called, this will be
+ * zero, resulting in a kill(0), which will result in the
+ * whole UML suddenly dying. Also, cover negative and
+ * 1 cases, since they shouldn't happen either.
+ */
+ if (mmu->id.u.pid < 2) {
+ printk(KERN_ERR "corrupt mm_context - pid = %d\n",
+ mmu->id.u.pid);
+ return;
}
+ os_kill_ptraced_process(mmu->id.u.pid, 1);
- if (skas_needs_stub)
- free_page(mmu->id.stack);
-
+ free_page(mmu->id.stack);
free_ldt(mmu);
}
diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c
index 4da11b3c8ddb..527fa5881915 100644
--- a/arch/um/kernel/skas/process.c
+++ b/arch/um/kernel/skas/process.c
@@ -10,25 +10,6 @@
#include <os.h>
#include <skas.h>
-int new_mm(unsigned long stack)
-{
- int fd, err;
-
- fd = os_open_file("/proc/mm", of_cloexec(of_write(OPENFLAGS())), 0);
- if (fd < 0)
- return fd;
-
- if (skas_needs_stub) {
- err = map_stub_pages(fd, STUB_CODE, STUB_DATA, stack);
- if (err) {
- os_close_file(fd);
- return err;
- }
- }
-
- return fd;
-}
-
extern void start_kernel(void);
static int __init start_kernel_proc(void *unused)
@@ -40,9 +21,7 @@ static int __init start_kernel_proc(void *unused)
cpu_tasks[0].pid = pid;
cpu_tasks[0].task = current;
-#ifdef CONFIG_SMP
- init_cpu_online(get_cpu_mask(0));
-#endif
+
start_kernel();
return 0;
}
@@ -55,14 +34,6 @@ int __init start_uml(void)
{
stack_protections((unsigned long) &cpu0_irqstack);
set_sigstack(cpu0_irqstack, THREAD_SIZE);
- if (proc_mm) {
- userspace_pid[0] = start_userspace(0);
- if (userspace_pid[0] < 0) {
- printf("start_uml - start_userspace returned %d\n",
- userspace_pid[0]);
- exit(1);
- }
- }
init_new_thread_signals();
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
deleted file mode 100644
index 5c8c3ea7db7b..000000000000
--- a/arch/um/kernel/smp.c
+++ /dev/null
@@ -1,238 +0,0 @@
-/*
- * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,linux.intel}.com)
- * Licensed under the GPL
- */
-
-#include <linux/percpu.h>
-#include <asm/pgalloc.h>
-#include <asm/tlb.h>
-
-#ifdef CONFIG_SMP
-
-#include <linux/sched.h>
-#include <linux/module.h>
-#include <linux/threads.h>
-#include <linux/interrupt.h>
-#include <linux/err.h>
-#include <linux/hardirq.h>
-#include <asm/smp.h>
-#include <asm/processor.h>
-#include <asm/spinlock.h>
-#include <kern.h>
-#include <irq_user.h>
-#include <os.h>
-
-/* Per CPU bogomips and other parameters
- * The only piece used here is the ipi pipe, which is set before SMP is
- * started and never changed.
- */
-struct cpuinfo_um cpu_data[NR_CPUS];
-
-/* A statistic, can be a little off */
-int num_reschedules_sent = 0;
-
-/* Not changed after boot */
-struct task_struct *idle_threads[NR_CPUS];
-
-void smp_send_reschedule(int cpu)
-{
- os_write_file(cpu_data[cpu].ipi_pipe[1], "R", 1);
- num_reschedules_sent++;
-}
-
-void smp_send_stop(void)
-{
- int i;
-
- printk(KERN_INFO "Stopping all CPUs...");
- for (i = 0; i < num_online_cpus(); i++) {
- if (i == current_thread->cpu)
- continue;
- os_write_file(cpu_data[i].ipi_pipe[1], "S", 1);
- }
- printk(KERN_CONT "done\n");
-}
-
-static cpumask_t smp_commenced_mask = CPU_MASK_NONE;
-static cpumask_t cpu_callin_map = CPU_MASK_NONE;
-
-static int idle_proc(void *cpup)
-{
- int cpu = (int) cpup, err;
-
- err = os_pipe(cpu_data[cpu].ipi_pipe, 1, 1);
- if (err < 0)
- panic("CPU#%d failed to create IPI pipe, err = %d", cpu, -err);
-
- os_set_fd_async(cpu_data[cpu].ipi_pipe[0]);
-
- wmb();
- if (cpu_test_and_set(cpu, cpu_callin_map)) {
- printk(KERN_ERR "huh, CPU#%d already present??\n", cpu);
- BUG();
- }
-
- while (!cpu_isset(cpu, smp_commenced_mask))
- cpu_relax();
-
- notify_cpu_starting(cpu);
- set_cpu_online(cpu, true);
- default_idle();
- return 0;
-}
-
-static struct task_struct *idle_thread(int cpu)
-{
- struct task_struct *new_task;
-
- current->thread.request.u.thread.proc = idle_proc;
- current->thread.request.u.thread.arg = (void *) cpu;
- new_task = fork_idle(cpu);
- if (IS_ERR(new_task))
- panic("copy_process failed in idle_thread, error = %ld",
- PTR_ERR(new_task));
-
- cpu_tasks[cpu] = ((struct cpu_task)
- { .pid = new_task->thread.mode.tt.extern_pid,
- .task = new_task } );
- idle_threads[cpu] = new_task;
- panic("skas mode doesn't support SMP");
- return new_task;
-}
-
-void smp_prepare_cpus(unsigned int maxcpus)
-{
- struct task_struct *idle;
- unsigned long waittime;
- int err, cpu, me = smp_processor_id();
- int i;
-
- for (i = 0; i < ncpus; ++i)
- set_cpu_possible(i, true);
-
- set_cpu_online(me, true);
- cpu_set(me, cpu_callin_map);
-
- err = os_pipe(cpu_data[me].ipi_pipe, 1, 1);
- if (err < 0)
- panic("CPU#0 failed to create IPI pipe, errno = %d", -err);
-
- os_set_fd_async(cpu_data[me].ipi_pipe[0]);
-
- for (cpu = 1; cpu < ncpus; cpu++) {
- printk(KERN_INFO "Booting processor %d...\n", cpu);
-
- idle = idle_thread(cpu);
-
- init_idle(idle, cpu);
-
- waittime = 200000000;
- while (waittime-- && !cpu_isset(cpu, cpu_callin_map))
- cpu_relax();
-
- printk(KERN_INFO "%s\n",
- cpu_isset(cpu, cpu_calling_map) ? "done" : "failed");
- }
-}
-
-void smp_prepare_boot_cpu(void)
-{
- set_cpu_online(smp_processor_id(), true);
-}
-
-int __cpu_up(unsigned int cpu, struct task_struct *tidle)
-{
- cpu_set(cpu, smp_commenced_mask);
- while (!cpu_online(cpu))
- mb();
- return 0;
-}
-
-int setup_profiling_timer(unsigned int multiplier)
-{
- printk(KERN_INFO "setup_profiling_timer\n");
- return 0;
-}
-
-void smp_call_function_slave(int cpu);
-
-void IPI_handler(int cpu)
-{
- unsigned char c;
- int fd;
-
- fd = cpu_data[cpu].ipi_pipe[0];
- while (os_read_file(fd, &c, 1) == 1) {
- switch (c) {
- case 'C':
- smp_call_function_slave(cpu);
- break;
-
- case 'R':
- scheduler_ipi();
- break;
-
- case 'S':
- printk(KERN_INFO "CPU#%d stopping\n", cpu);
- while (1)
- pause();
- break;
-
- default:
- printk(KERN_ERR "CPU#%d received unknown IPI [%c]!\n",
- cpu, c);
- break;
- }
- }
-}
-
-int hard_smp_processor_id(void)
-{
- return pid_to_processor_id(os_getpid());
-}
-
-static DEFINE_SPINLOCK(call_lock);
-static atomic_t scf_started;
-static atomic_t scf_finished;
-static void (*func)(void *info);
-static void *info;
-
-void smp_call_function_slave(int cpu)
-{
- atomic_inc(&scf_started);
- (*func)(info);
- atomic_inc(&scf_finished);
-}
-
-int smp_call_function(void (*_func)(void *info), void *_info, int wait)
-{
- int cpus = num_online_cpus() - 1;
- int i;
-
- if (!cpus)
- return 0;
-
- /* Can deadlock when called with interrupts disabled */
- WARN_ON(irqs_disabled());
-
- spin_lock_bh(&call_lock);
- atomic_set(&scf_started, 0);
- atomic_set(&scf_finished, 0);
- func = _func;
- info = _info;
-
- for_each_online_cpu(i)
- os_write_file(cpu_data[i].ipi_pipe[1], "C", 1);
-
- while (atomic_read(&scf_started) != cpus)
- barrier();
-
- if (wait)
- while (atomic_read(&scf_finished) != cpus)
- barrier();
-
- spin_unlock_bh(&call_lock);
- return 0;
-}
-
-#endif
diff --git a/arch/um/kernel/sysrq.c b/arch/um/kernel/sysrq.c
index 894c8d303cda..aa1b56f5ac68 100644
--- a/arch/um/kernel/sysrq.c
+++ b/arch/um/kernel/sysrq.c
@@ -29,7 +29,7 @@ static const struct stacktrace_ops stackops = {
void show_stack(struct task_struct *task, unsigned long *stack)
{
- unsigned long *sp = stack, bp = 0;
+ unsigned long *sp = stack;
struct pt_regs *segv_regs = current->thread.segv_regs;
int i;
@@ -39,10 +39,6 @@ void show_stack(struct task_struct *task, unsigned long *stack)
return;
}
-#ifdef CONFIG_FRAME_POINTER
- bp = get_frame_pointer(task, segv_regs);
-#endif
-
if (!stack)
sp = get_stack_pointer(task, segv_regs);
diff --git a/arch/um/kernel/trap.c b/arch/um/kernel/trap.c
index 209617302df8..8e4daf44e980 100644
--- a/arch/um/kernel/trap.c
+++ b/arch/um/kernel/trap.c
@@ -220,7 +220,7 @@ unsigned long segv(struct faultinfo fi, unsigned long ip, int is_user,
panic("Segfault with no mm");
}
- if (SEGV_IS_FIXABLE(&fi) || SEGV_MAYBE_FIXABLE(&fi))
+ if (SEGV_IS_FIXABLE(&fi))
err = handle_page_fault(address, ip, is_write, is_user,
&si.si_code);
else {
diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c
index 9274eae6ae7b..07f798f4bcee 100644
--- a/arch/um/kernel/um_arch.c
+++ b/arch/um/kernel/um_arch.c
@@ -11,6 +11,7 @@
#include <linux/string.h>
#include <linux/utsname.h>
#include <linux/sched.h>
+#include <linux/kmsg_dump.h>
#include <asm/pgtable.h>
#include <asm/processor.h>
#include <asm/sections.h>
@@ -66,12 +67,6 @@ static int show_cpuinfo(struct seq_file *m, void *v)
{
int index = 0;
-#ifdef CONFIG_SMP
- index = (struct cpuinfo_um *) v - cpu_data;
- if (!cpu_online(index))
- return 0;
-#endif
-
seq_printf(m, "processor\t: %d\n", index);
seq_printf(m, "vendor_id\t: User Mode Linux\n");
seq_printf(m, "model name\t: UML\n");
@@ -168,23 +163,6 @@ __uml_setup("debug", no_skas_debug_setup,
" this flag is not needed to run gdb on UML in skas mode\n\n"
);
-#ifdef CONFIG_SMP
-static int __init uml_ncpus_setup(char *line, int *add)
-{
- if (!sscanf(line, "%d", &ncpus)) {
- printf("Couldn't parse [%s]\n", line);
- return -1;
- }
-
- return 0;
-}
-
-__uml_setup("ncpus=", uml_ncpus_setup,
-"ncpus=<# of desired CPUs>\n"
-" This tells an SMP kernel how many virtual processors to start.\n\n"
-);
-#endif
-
static int __init Usage(char *line, int *add)
{
const char **p;
@@ -234,6 +212,7 @@ static void __init uml_postsetup(void)
static int panic_exit(struct notifier_block *self, unsigned long unused1,
void *unused2)
{
+ kmsg_dump(KMSG_DUMP_PANIC);
bust_spinlocks(1);
bust_spinlocks(0);
uml_exitcode = 1;
@@ -247,6 +226,16 @@ static struct notifier_block panic_exit_notifier = {
.priority = 0
};
+void uml_finishsetup(void)
+{
+ atomic_notifier_chain_register(&panic_notifier_list,
+ &panic_exit_notifier);
+
+ uml_postsetup();
+
+ new_thread_handler();
+}
+
/* Set during early boot */
unsigned long task_size;
EXPORT_SYMBOL(task_size);
@@ -268,7 +257,6 @@ int __init linux_main(int argc, char **argv)
unsigned long stack;
unsigned int i;
int add;
- char * mode;
for (i = 1; i < argc; i++) {
if ((i == 1) && (argv[i][0] == ' '))
@@ -291,15 +279,6 @@ int __init linux_main(int argc, char **argv)
/* OS sanity checks that need to happen before the kernel runs */
os_early_checks();
- can_do_skas();
-
- if (proc_mm && ptrace_faultinfo)
- mode = "SKAS3";
- else
- mode = "SKAS0";
-
- printf("UML running in %s mode\n", mode);
-
brk_start = (unsigned long) sbrk(0);
/*
@@ -334,11 +313,6 @@ int __init linux_main(int argc, char **argv)
if (physmem_size + iomem_size > max_physmem) {
highmem = physmem_size + iomem_size - max_physmem;
physmem_size -= highmem;
-#ifndef CONFIG_HIGHMEM
- highmem = 0;
- printf("CONFIG_HIGHMEM not enabled - physical memory shrunk "
- "to %Lu bytes\n", physmem_size);
-#endif
}
high_physmem = uml_physmem + physmem_size;
@@ -362,11 +336,6 @@ int __init linux_main(int argc, char **argv)
printf("Kernel virtual memory size shrunk to %lu bytes\n",
virtmem_size);
- atomic_notifier_chain_register(&panic_notifier_list,
- &panic_exit_notifier);
-
- uml_postsetup();
-
stack_protections((unsigned long) &init_thread_info);
os_flush_stdout();
@@ -390,15 +359,3 @@ void __init check_bugs(void)
void apply_alternatives(struct alt_instr *start, struct alt_instr *end)
{
}
-
-#ifdef CONFIG_SMP
-void alternatives_smp_module_add(struct module *mod, char *name,
- void *locks, void *locks_end,
- void *text, void *text_end)
-{
-}
-
-void alternatives_smp_module_del(struct module *mod)
-{
-}
-#endif
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 33496fe2bb52..8408aba915b2 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -16,7 +16,6 @@
#include <init.h>
#include <longjmp.h>
#include <os.h>
-#include <skas_ptrace.h>
#define ARBITRARY_ADDR -1
#define FAILURE_PID -1
@@ -102,21 +101,6 @@ void os_kill_process(int pid, int reap_child)
CATCH_EINTR(waitpid(pid, NULL, __WALL));
}
-/* This is here uniquely to have access to the userspace errno, i.e. the one
- * used by ptrace in case of error.
- */
-
-long os_ptrace_ldt(long pid, long addr, long data)
-{
- int ret;
-
- ret = ptrace(PTRACE_LDT, pid, addr, data);
-
- if (ret < 0)
- return -errno;
- return ret;
-}
-
/* Kill off a ptraced child by all means available. kill it normally first,
* then PTRACE_KILL it, then PTRACE_CONT it in case it's in a run state from
* which it can't exit directly.
diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c
index 689b18db798f..e7f8c945a573 100644
--- a/arch/um/os-Linux/skas/mem.c
+++ b/arch/um/os-Linux/skas/mem.c
@@ -12,7 +12,6 @@
#include <as-layout.h>
#include <mm_id.h>
#include <os.h>
-#include <proc_mm.h>
#include <ptrace_user.h>
#include <registers.h>
#include <skas.h>
@@ -46,8 +45,6 @@ static int __init init_syscall_regs(void)
__initcall(init_syscall_regs);
-extern int proc_mm;
-
static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
{
int n, i;
@@ -56,10 +53,6 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr)
unsigned long * syscall;
int err, pid = mm_idp->u.pid;
- if (proc_mm)
- /* FIXME: Need to look up userspace_pid by cpu */
- pid = userspace_pid[0];
-
n = ptrace_setregs(pid, syscall_regs);
if (n < 0) {
printk(UM_KERN_ERR "Registers - \n");
@@ -178,38 +171,12 @@ int map(struct mm_id * mm_idp, unsigned long virt, unsigned long len, int prot,
int phys_fd, unsigned long long offset, int done, void **data)
{
int ret;
+ unsigned long args[] = { virt, len, prot,
+ MAP_SHARED | MAP_FIXED, phys_fd,
+ MMAP_OFFSET(offset) };
- if (proc_mm) {
- struct proc_mm_op map;
- int fd = mm_idp->u.mm_fd;
-
- map = ((struct proc_mm_op) { .op = MM_MMAP,
- .u =
- { .mmap =
- { .addr = virt,
- .len = len,
- .prot = prot,
- .flags = MAP_SHARED |
- MAP_FIXED,
- .fd = phys_fd,
- .offset= offset
- } } } );
- CATCH_EINTR(ret = write(fd, &map, sizeof(map)));
- if (ret != sizeof(map)) {
- ret = -errno;
- printk(UM_KERN_ERR "map : /proc/mm map failed, "
- "err = %d\n", -ret);
- }
- else ret = 0;
- }
- else {
- unsigned long args[] = { virt, len, prot,
- MAP_SHARED | MAP_FIXED, phys_fd,
- MMAP_OFFSET(offset) };
-
- ret = run_syscall_stub(mm_idp, STUB_MMAP_NR, args, virt,
- data, done);
- }
+ ret = run_syscall_stub(mm_idp, STUB_MMAP_NR, args, virt,
+ data, done);
return ret;
}
@@ -218,32 +185,11 @@ int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
int done, void **data)
{
int ret;
+ unsigned long args[] = { (unsigned long) addr, len, 0, 0, 0,
+ 0 };
- if (proc_mm) {
- struct proc_mm_op unmap;
- int fd = mm_idp->u.mm_fd;
-
- unmap = ((struct proc_mm_op) { .op = MM_MUNMAP,
- .u =
- { .munmap =
- { .addr =
- (unsigned long) addr,
- .len = len } } } );
- CATCH_EINTR(ret = write(fd, &unmap, sizeof(unmap)));
- if (ret != sizeof(unmap)) {
- ret = -errno;
- printk(UM_KERN_ERR "unmap - proc_mm write returned "
- "%d\n", ret);
- }
- else ret = 0;
- }
- else {
- unsigned long args[] = { (unsigned long) addr, len, 0, 0, 0,
- 0 };
-
- ret = run_syscall_stub(mm_idp, __NR_munmap, args, 0,
- data, done);
- }
+ ret = run_syscall_stub(mm_idp, __NR_munmap, args, 0,
+ data, done);
return ret;
}
@@ -251,33 +197,11 @@ int unmap(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
int protect(struct mm_id * mm_idp, unsigned long addr, unsigned long len,
unsigned int prot, int done, void **data)
{
- struct proc_mm_op protect;
int ret;
+ unsigned long args[] = { addr, len, prot, 0, 0, 0 };
- if (proc_mm) {
- int fd = mm_idp->u.mm_fd;
-
- protect = ((struct proc_mm_op) { .op = MM_MPROTECT,
- .u =
- { .mprotect =
- { .addr =
- (unsigned long) addr,
- .len = len,
- .prot = prot } } } );
-
- CATCH_EINTR(ret = write(fd, &protect, sizeof(protect)));
- if (ret != sizeof(protect)) {
- ret = -errno;
- printk(UM_KERN_ERR "protect failed, err = %d", -ret);
- }
- else ret = 0;
- }
- else {
- unsigned long args[] = { addr, len, prot, 0, 0, 0 };
-
- ret = run_syscall_stub(mm_idp, __NR_mprotect, args, 0,
- data, done);
- }
+ ret = run_syscall_stub(mm_idp, __NR_mprotect, args, 0,
+ data, done);
return ret;
}
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 908579f2b0ab..7a9777570a62 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -16,11 +16,9 @@
#include <kern_util.h>
#include <mem.h>
#include <os.h>
-#include <proc_mm.h>
#include <ptrace_user.h>
#include <registers.h>
#include <skas.h>
-#include <skas_ptrace.h>
#include <sysdep/stub.h>
int is_skas_winch(int pid, int fd, void *data)
@@ -91,50 +89,33 @@ extern unsigned long current_stub_stack(void);
static void get_skas_faultinfo(int pid, struct faultinfo *fi)
{
int err;
+ unsigned long fpregs[FP_SIZE];
- if (ptrace_faultinfo) {
- err = ptrace(PTRACE_FAULTINFO, pid, 0, fi);
- if (err) {
- printk(UM_KERN_ERR "get_skas_faultinfo - "
- "PTRACE_FAULTINFO failed, errno = %d\n", errno);
- fatal_sigsegv();
- }
-
- /* Special handling for i386, which has different structs */
- if (sizeof(struct ptrace_faultinfo) < sizeof(struct faultinfo))
- memset((char *)fi + sizeof(struct ptrace_faultinfo), 0,
- sizeof(struct faultinfo) -
- sizeof(struct ptrace_faultinfo));
+ err = get_fp_registers(pid, fpregs);
+ if (err < 0) {
+ printk(UM_KERN_ERR "save_fp_registers returned %d\n",
+ err);
+ fatal_sigsegv();
}
- else {
- unsigned long fpregs[FP_SIZE];
-
- err = get_fp_registers(pid, fpregs);
- if (err < 0) {
- printk(UM_KERN_ERR "save_fp_registers returned %d\n",
- err);
- fatal_sigsegv();
- }
- err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);
- if (err) {
- printk(UM_KERN_ERR "Failed to continue stub, pid = %d, "
- "errno = %d\n", pid, errno);
- fatal_sigsegv();
- }
- wait_stub_done(pid);
+ err = ptrace(PTRACE_CONT, pid, 0, SIGSEGV);
+ if (err) {
+ printk(UM_KERN_ERR "Failed to continue stub, pid = %d, "
+ "errno = %d\n", pid, errno);
+ fatal_sigsegv();
+ }
+ wait_stub_done(pid);
- /*
- * faultinfo is prepared by the stub-segv-handler at start of
- * the stub stack page. We just have to copy it.
- */
- memcpy(fi, (void *)current_stub_stack(), sizeof(*fi));
+ /*
+ * faultinfo is prepared by the stub-segv-handler at start of
+ * the stub stack page. We just have to copy it.
+ */
+ memcpy(fi, (void *)current_stub_stack(), sizeof(*fi));
- err = put_fp_registers(pid, fpregs);
- if (err < 0) {
- printk(UM_KERN_ERR "put_fp_registers returned %d\n",
- err);
- fatal_sigsegv();
- }
+ err = put_fp_registers(pid, fpregs);
+ if (err < 0) {
+ printk(UM_KERN_ERR "put_fp_registers returned %d\n",
+ err);
+ fatal_sigsegv();
}
}
@@ -198,7 +179,8 @@ extern int __syscall_stub_start;
static int userspace_tramp(void *stack)
{
void *addr;
- int err;
+ int err, fd;
+ unsigned long long offset;
ptrace(PTRACE_TRACEME, 0, 0, 0);
@@ -211,36 +193,32 @@ static int userspace_tramp(void *stack)
exit(1);
}
- if (!proc_mm) {
- /*
- * This has a pte, but it can't be mapped in with the usual
- * tlb_flush mechanism because this is part of that mechanism
- */
- int fd;
- unsigned long long offset;
- fd = phys_mapping(to_phys(&__syscall_stub_start), &offset);
- addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
- PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
+ /*
+ * This has a pte, but it can't be mapped in with the usual
+ * tlb_flush mechanism because this is part of that mechanism
+ */
+ fd = phys_mapping(to_phys(&__syscall_stub_start), &offset);
+ addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE,
+ PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset);
+ if (addr == MAP_FAILED) {
+ printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, "
+ "errno = %d\n", STUB_CODE, errno);
+ exit(1);
+ }
+
+ if (stack != NULL) {
+ fd = phys_mapping(to_phys(stack), &offset);
+ addr = mmap((void *) STUB_DATA,
+ UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
+ MAP_FIXED | MAP_SHARED, fd, offset);
if (addr == MAP_FAILED) {
- printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, "
- "errno = %d\n", STUB_CODE, errno);
+ printk(UM_KERN_ERR "mapping segfault stack "
+ "at 0x%lx failed, errno = %d\n",
+ STUB_DATA, errno);
exit(1);
}
-
- if (stack != NULL) {
- fd = phys_mapping(to_phys(stack), &offset);
- addr = mmap((void *) STUB_DATA,
- UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
- MAP_FIXED | MAP_SHARED, fd, offset);
- if (addr == MAP_FAILED) {
- printk(UM_KERN_ERR "mapping segfault stack "
- "at 0x%lx failed, errno = %d\n",
- STUB_DATA, errno);
- exit(1);
- }
- }
}
- if (!ptrace_faultinfo && (stack != NULL)) {
+ if (stack != NULL) {
struct sigaction sa;
unsigned long v = STUB_CODE +
@@ -286,11 +264,7 @@ int start_userspace(unsigned long stub_stack)
sp = (unsigned long) stack + UM_KERN_PAGE_SIZE - sizeof(void *);
- flags = CLONE_FILES;
- if (proc_mm)
- flags |= CLONE_VM;
- else
- flags |= SIGCHLD;
+ flags = CLONE_FILES | SIGCHLD;
pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack);
if (pid < 0) {
@@ -413,8 +387,7 @@ void userspace(struct uml_pt_regs *regs)
switch (sig) {
case SIGSEGV:
- if (PTRACE_FULL_FAULTINFO ||
- !ptrace_faultinfo) {
+ if (PTRACE_FULL_FAULTINFO) {
get_skas_faultinfo(pid,
&regs->faultinfo);
(*sig_info[SIGSEGV])(SIGSEGV, (struct siginfo *)&si,
@@ -571,67 +544,6 @@ int copy_context_skas0(unsigned long new_stack, int pid)
return err;
}
-/*
- * This is used only, if stub pages are needed, while proc_mm is
- * available. Opening /proc/mm creates a new mm_context, which lacks
- * the stub-pages. Thus, we map them using /proc/mm-fd
- */
-int map_stub_pages(int fd, unsigned long code, unsigned long data,
- unsigned long stack)
-{
- struct proc_mm_op mmop;
- int n;
- unsigned long long code_offset;
- int code_fd = phys_mapping(to_phys((void *) &__syscall_stub_start),
- &code_offset);
-
- mmop = ((struct proc_mm_op) { .op = MM_MMAP,
- .u =
- { .mmap =
- { .addr = code,
- .len = UM_KERN_PAGE_SIZE,
- .prot = PROT_EXEC,
- .flags = MAP_FIXED | MAP_PRIVATE,
- .fd = code_fd,
- .offset = code_offset
- } } });
- CATCH_EINTR(n = write(fd, &mmop, sizeof(mmop)));
- if (n != sizeof(mmop)) {
- n = errno;
- printk(UM_KERN_ERR "mmap args - addr = 0x%lx, fd = %d, "
- "offset = %llx\n", code, code_fd,
- (unsigned long long) code_offset);
- printk(UM_KERN_ERR "map_stub_pages : /proc/mm map for code "
- "failed, err = %d\n", n);
- return -n;
- }
-
- if (stack) {
- unsigned long long map_offset;
- int map_fd = phys_mapping(to_phys((void *)stack), &map_offset);
- mmop = ((struct proc_mm_op)
- { .op = MM_MMAP,
- .u =
- { .mmap =
- { .addr = data,
- .len = UM_KERN_PAGE_SIZE,
- .prot = PROT_READ | PROT_WRITE,
- .flags = MAP_FIXED | MAP_SHARED,
- .fd = map_fd,
- .offset = map_offset
- } } });
- CATCH_EINTR(n = write(fd, &mmop, sizeof(mmop)));
- if (n != sizeof(mmop)) {
- n = errno;
- printk(UM_KERN_ERR "map_stub_pages : /proc/mm map for "
- "data failed, err = %d\n", n);
- return -n;
- }
- }
-
- return 0;
-}
-
void new_thread(void *stack, jmp_buf *buf, void (*handler)(void))
{
(*buf)[0].JB_IP = (unsigned long) handler;
@@ -674,7 +586,7 @@ int start_idle_thread(void *stack, jmp_buf *switch_buf)
n = setjmp(initial_jmpbuf);
switch (n) {
case INIT_JMP_NEW_THREAD:
- (*switch_buf)[0].JB_IP = (unsigned long) new_thread_handler;
+ (*switch_buf)[0].JB_IP = (unsigned long) uml_finishsetup;
(*switch_buf)[0].JB_SP = (unsigned long) stack +
UM_THREAD_SIZE - sizeof(void *);
break;
@@ -728,17 +640,5 @@ void reboot_skas(void)
void __switch_mm(struct mm_id *mm_idp)
{
- int err;
-
- /* FIXME: need cpu pid in __switch_mm */
- if (proc_mm) {
- err = ptrace(PTRACE_SWITCH_MM, userspace_pid[0], 0,
- mm_idp->u.mm_fd);
- if (err) {
- printk(UM_KERN_ERR "__switch_mm - PTRACE_SWITCH_MM "
- "failed, errno = %d\n", errno);
- fatal_sigsegv();
- }
- }
- else userspace_pid[0] = mm_idp->u.pid;
+ userspace_pid[0] = mm_idp->u.pid;
}
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c
index 337518c5042a..47f1ff056a54 100644
--- a/arch/um/os-Linux/start_up.c
+++ b/arch/um/os-Linux/start_up.c
@@ -24,7 +24,6 @@
#include <ptrace_user.h>
#include <registers.h>
#include <skas.h>
-#include <skas_ptrace.h>
static void ptrace_child(void)
{
@@ -143,44 +142,6 @@ static int stop_ptraced_child(int pid, int exitcode, int mustexit)
}
/* Changed only during early boot */
-int ptrace_faultinfo;
-static int disable_ptrace_faultinfo;
-
-int ptrace_ldt;
-static int disable_ptrace_ldt;
-
-int proc_mm;
-static int disable_proc_mm;
-
-int have_switch_mm;
-static int disable_switch_mm;
-
-int skas_needs_stub;
-
-static int __init skas0_cmd_param(char *str, int* add)
-{
- disable_ptrace_faultinfo = 1;
- disable_ptrace_ldt = 1;
- disable_proc_mm = 1;
- disable_switch_mm = 1;
-
- return 0;
-}
-
-/* The two __uml_setup would conflict, without this stupid alias. */
-
-static int __init mode_skas0_cmd_param(char *str, int* add)
- __attribute__((alias("skas0_cmd_param")));
-
-__uml_setup("skas0", skas0_cmd_param,
-"skas0\n"
-" Disables SKAS3 and SKAS4 usage, so that SKAS0 is used\n\n");
-
-__uml_setup("mode=skas0", mode_skas0_cmd_param,
-"mode=skas0\n"
-" Disables SKAS3 and SKAS4 usage, so that SKAS0 is used.\n\n");
-
-/* Changed only during early boot */
static int force_sysemu_disabled = 0;
static int __init nosysemu_cmd_param(char *str, int* add)
@@ -376,121 +337,6 @@ void __init os_early_checks(void)
stop_ptraced_child(pid, 1, 1);
}
-static int __init noprocmm_cmd_param(char *str, int* add)
-{
- disable_proc_mm = 1;
- return 0;
-}
-
-__uml_setup("noprocmm", noprocmm_cmd_param,
-"noprocmm\n"
-" Turns off usage of /proc/mm, even if host supports it.\n"
-" To support /proc/mm, the host needs to be patched using\n"
-" the current skas3 patch.\n\n");
-
-static int __init noptracefaultinfo_cmd_param(char *str, int* add)
-{
- disable_ptrace_faultinfo = 1;
- return 0;
-}
-
-__uml_setup("noptracefaultinfo", noptracefaultinfo_cmd_param,
-"noptracefaultinfo\n"
-" Turns off usage of PTRACE_FAULTINFO, even if host supports\n"
-" it. To support PTRACE_FAULTINFO, the host needs to be patched\n"
-" using the current skas3 patch.\n\n");
-
-static int __init noptraceldt_cmd_param(char *str, int* add)
-{
- disable_ptrace_ldt = 1;
- return 0;
-}
-
-__uml_setup("noptraceldt", noptraceldt_cmd_param,
-"noptraceldt\n"
-" Turns off usage of PTRACE_LDT, even if host supports it.\n"
-" To support PTRACE_LDT, the host needs to be patched using\n"
-" the current skas3 patch.\n\n");
-
-static inline void check_skas3_ptrace_faultinfo(void)
-{
- struct ptrace_faultinfo fi;
- int pid, n;
-
- non_fatal(" - PTRACE_FAULTINFO...");
- pid = start_ptraced_child();
-
- n = ptrace(PTRACE_FAULTINFO, pid, 0, &fi);
- if (n < 0) {
- if (errno == EIO)
- non_fatal("not found\n");
- else
- perror("not found");
- } else if (disable_ptrace_faultinfo)
- non_fatal("found but disabled on command line\n");
- else {
- ptrace_faultinfo = 1;
- non_fatal("found\n");
- }
-
- stop_ptraced_child(pid, 1, 1);
-}
-
-static inline void check_skas3_ptrace_ldt(void)
-{
-#ifdef PTRACE_LDT
- int pid, n;
- unsigned char ldtbuf[40];
- struct ptrace_ldt ldt_op = (struct ptrace_ldt) {
- .func = 2, /* read default ldt */
- .ptr = ldtbuf,
- .bytecount = sizeof(ldtbuf)};
-
- non_fatal(" - PTRACE_LDT...");
- pid = start_ptraced_child();
-
- n = ptrace(PTRACE_LDT, pid, 0, (unsigned long) &ldt_op);
- if (n < 0) {
- if (errno == EIO)
- non_fatal("not found\n");
- else
- perror("not found");
- } else if (disable_ptrace_ldt)
- non_fatal("found, but use is disabled\n");
- else {
- ptrace_ldt = 1;
- non_fatal("found\n");
- }
-
- stop_ptraced_child(pid, 1, 1);
-#endif
-}
-
-static inline void check_skas3_proc_mm(void)
-{
- non_fatal(" - /proc/mm...");
- if (access("/proc/mm", W_OK) < 0)
- perror("not found");
- else if (disable_proc_mm)
- non_fatal("found but disabled on command line\n");
- else {
- proc_mm = 1;
- non_fatal("found\n");
- }
-}
-
-void can_do_skas(void)
-{
- non_fatal("Checking for the skas3 patch in the host:\n");
-
- check_skas3_proc_mm();
- check_skas3_ptrace_faultinfo();
- check_skas3_ptrace_ldt();
-
- if (!proc_mm || !ptrace_faultinfo || !ptrace_ldt)
- skas_needs_stub = 1;
-}
-
int __init parse_iomem(char *str, int *add)
{
struct iomem_region *new;
diff --git a/arch/um/sys-ia64/Makefile b/arch/um/sys-ia64/Makefile
deleted file mode 100644
index d02f4c265232..000000000000
--- a/arch/um/sys-ia64/Makefile
+++ /dev/null
@@ -1,11 +0,0 @@
-OBJ = built-in.o
-
-OBJS =
-
-all: $(OBJ)
-
-$(OBJ): $(OBJS)
- rm -f $@
- $(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@
-
-clean-files := $(OBJS) link.ld
diff --git a/arch/um/sys-ia64/sysdep/ptrace.h b/arch/um/sys-ia64/sysdep/ptrace.h
deleted file mode 100644
index 0f0f4e6fd334..000000000000
--- a/arch/um/sys-ia64/sysdep/ptrace.h
+++ /dev/null
@@ -1,16 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_IA64_PTRACE_H
-#define __SYSDEP_IA64_PTRACE_H
-
-struct sys_pt_regs {
- int foo;
-};
-
-#define EMPTY_REGS { 0 }
-
-#endif
-
diff --git a/arch/um/sys-ia64/sysdep/sigcontext.h b/arch/um/sys-ia64/sysdep/sigcontext.h
deleted file mode 100644
index 76b43161e779..000000000000
--- a/arch/um/sys-ia64/sysdep/sigcontext.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_IA64_SIGCONTEXT_H
-#define __SYSDEP_IA64_SIGCONTEXT_H
-
-#endif
-
diff --git a/arch/um/sys-ia64/sysdep/skas_ptrace.h b/arch/um/sys-ia64/sysdep/skas_ptrace.h
deleted file mode 100644
index 25a38e715702..000000000000
--- a/arch/um/sys-ia64/sysdep/skas_ptrace.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_IA64_SKAS_PTRACE_H
-#define __SYSDEP_IA64_SKAS_PTRACE_H
-
-struct ptrace_faultinfo {
- int is_write;
- unsigned long addr;
-};
-
-struct ptrace_ldt {
- int func;
- void *ptr;
- unsigned long bytecount;
-};
-
-#define PTRACE_LDT 54
-
-#endif
diff --git a/arch/um/sys-ia64/sysdep/syscalls.h b/arch/um/sys-ia64/sysdep/syscalls.h
deleted file mode 100644
index 5f6700c41558..000000000000
--- a/arch/um/sys-ia64/sysdep/syscalls.h
+++ /dev/null
@@ -1,10 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_IA64_SYSCALLS_H
-#define __SYSDEP_IA64_SYSCALLS_H
-
-#endif
-
diff --git a/arch/um/sys-ppc/Makefile b/arch/um/sys-ppc/Makefile
deleted file mode 100644
index 20d363bd7004..000000000000
--- a/arch/um/sys-ppc/Makefile
+++ /dev/null
@@ -1,65 +0,0 @@
-OBJ = built-in.o
-
-.S.o:
- $(CC) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
-
-OBJS = ptrace.o sigcontext.o checksum.o miscthings.o misc.o \
- ptrace_user.o sysrq.o
-
-asflags-y := -DCONFIG_PPC32 -I. -I$(srctree)/arch/ppc/kernel
-
-all: $(OBJ)
-
-$(OBJ): $(OBJS)
- rm -f $@
- $(LD) $(LINKFLAGS) --start-group $^ --end-group -o $@
-
-ptrace_user.o: ptrace_user.c
- $(CC) -D__KERNEL__ $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
-
-sigcontext.o: sigcontext.c
- $(CC) $(USER_CFLAGS) $(ccflags-y) -c -o $@ $<
-
-checksum.S:
- rm -f $@
- ln -s $(srctree)/arch/ppc/lib/$@ $@
-
-mk_defs.c:
- rm -f $@
- ln -s $(srctree)/arch/ppc/kernel/$@ $@
-
-ppc_defs.head:
- rm -f $@
- ln -s $(srctree)/arch/ppc/kernel/$@ $@
-
-ppc_defs.h: mk_defs.c ppc_defs.head \
- $(srctree)/include/asm-ppc/mmu.h \
- $(srctree)/include/asm-ppc/processor.h \
- $(srctree)/include/asm-ppc/pgtable.h \
- $(srctree)/include/asm-ppc/ptrace.h
-# $(CC) $(CFLAGS) -S mk_defs.c
- cp ppc_defs.head ppc_defs.h
-# for bk, this way we can write to the file even if it's not checked out
- echo '#define THREAD 608' >> ppc_defs.h
- echo '#define PT_REGS 8' >> ppc_defs.h
- echo '#define CLONE_VM 256' >> ppc_defs.h
-# chmod u+w ppc_defs.h
-# grep '^#define' mk_defs.s >> ppc_defs.h
-# rm mk_defs.s
-
-# the asm link is horrible, and breaks the other targets. This is also
-# not going to work with parallel makes.
-
-checksum.o: checksum.S
- rm -f asm
- ln -s $(srctree)/include/asm-ppc asm
- $(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
- rm -f asm
-
-misc.o: misc.S ppc_defs.h
- rm -f asm
- ln -s $(srctree)/include/asm-ppc asm
- $(CC) $(asflags-y) $(KBUILD_AFLAGS) -D__ASSEMBLY__ -D__UM_PPC__ -c $< -o $*.o
- rm -f asm
-
-clean-files := $(OBJS) ppc_defs.h checksum.S mk_defs.c
diff --git a/arch/um/sys-ppc/asm/archparam.h b/arch/um/sys-ppc/asm/archparam.h
deleted file mode 100644
index 4269d8a37b4f..000000000000
--- a/arch/um/sys-ppc/asm/archparam.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#ifndef __UM_ARCHPARAM_PPC_H
-#define __UM_ARCHPARAM_PPC_H
-
-/********* Bits for asm-um/string.h **********/
-
-#define __HAVE_ARCH_STRRCHR
-
-#endif
diff --git a/arch/um/sys-ppc/asm/elf.h b/arch/um/sys-ppc/asm/elf.h
deleted file mode 100644
index 8aacaf56508d..000000000000
--- a/arch/um/sys-ppc/asm/elf.h
+++ /dev/null
@@ -1,51 +0,0 @@
-#ifndef __UM_ELF_PPC_H
-#define __UM_ELF_PPC_H
-
-
-extern long elf_aux_hwcap;
-#define ELF_HWCAP (elf_aux_hwcap)
-
-#define SET_PERSONALITY(ex) do ; while(0)
-
-#define ELF_EXEC_PAGESIZE 4096
-
-#define elf_check_arch(x) (1)
-
-#ifdef CONFIG_64BIT
-#define ELF_CLASS ELFCLASS64
-#else
-#define ELF_CLASS ELFCLASS32
-#endif
-
-#define R_386_NONE 0
-#define R_386_32 1
-#define R_386_PC32 2
-#define R_386_GOT32 3
-#define R_386_PLT32 4
-#define R_386_COPY 5
-#define R_386_GLOB_DAT 6
-#define R_386_JMP_SLOT 7
-#define R_386_RELATIVE 8
-#define R_386_GOTOFF 9
-#define R_386_GOTPC 10
-#define R_386_NUM 11
-
-#define ELF_PLATFORM (0)
-
-#define ELF_ET_DYN_BASE (0x08000000)
-
-/* the following stolen from asm-ppc/elf.h */
-#define ELF_NGREG 48 /* includes nip, msr, lr, etc. */
-#define ELF_NFPREG 33 /* includes fpscr */
-/* General registers */
-typedef unsigned long elf_greg_t;
-typedef elf_greg_t elf_gregset_t[ELF_NGREG];
-
-/* Floating point registers */
-typedef double elf_fpreg_t;
-typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
-
-#define ELF_DATA ELFDATA2MSB
-#define ELF_ARCH EM_PPC
-
-#endif
diff --git a/arch/um/sys-ppc/asm/processor.h b/arch/um/sys-ppc/asm/processor.h
deleted file mode 100644
index 959323151229..000000000000
--- a/arch/um/sys-ppc/asm/processor.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#ifndef __UM_PROCESSOR_PPC_H
-#define __UM_PROCESSOR_PPC_H
-
-#if defined(__ASSEMBLY__)
-
-#define CONFIG_PPC_MULTIPLATFORM
-#include "arch/processor.h"
-
-#else
-
-#include "asm/processor-generic.h"
-
-#endif
-
-#endif
diff --git a/arch/um/sys-ppc/misc.S b/arch/um/sys-ppc/misc.S
deleted file mode 100644
index 1364b7da578c..000000000000
--- a/arch/um/sys-ppc/misc.S
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * This file contains miscellaneous low-level functions.
- * Copyright (C) 1995-1996 Gary Thomas (gdt@linuxppc.org)
- *
- * Largely rewritten by Cort Dougan (cort@cs.nmt.edu)
- * and Paul Mackerras.
- *
- * A couple of functions stolen from arch/ppc/kernel/misc.S for UML
- * by Chris Emerson.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
- *
- */
-
-#include <asm/processor.h>
-#include "ppc_asm.h"
-
-#if defined(CONFIG_4xx) || defined(CONFIG_8xx)
-#define CACHE_LINE_SIZE 16
-#define LG_CACHE_LINE_SIZE 4
-#define MAX_COPY_PREFETCH 1
-#else
-#define CACHE_LINE_SIZE 32
-#define LG_CACHE_LINE_SIZE 5
-#define MAX_COPY_PREFETCH 4
-#endif /* CONFIG_4xx || CONFIG_8xx */
-
- .text
-
-/*
- * Clear a page using the dcbz instruction, which doesn't cause any
- * memory traffic (except to write out any cache lines which get
- * displaced). This only works on cacheable memory.
- */
-_GLOBAL(clear_page)
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-#ifdef CONFIG_8xx
- li r4, 0
-1: stw r4, 0(r3)
- stw r4, 4(r3)
- stw r4, 8(r3)
- stw r4, 12(r3)
-#else
-1: dcbz 0,r3
-#endif
- addi r3,r3,CACHE_LINE_SIZE
- bdnz 1b
- blr
-
-/*
- * Copy a whole page. We use the dcbz instruction on the destination
- * to reduce memory traffic (it eliminates the unnecessary reads of
- * the destination into cache). This requires that the destination
- * is cacheable.
- */
-#define COPY_16_BYTES \
- lwz r6,4(r4); \
- lwz r7,8(r4); \
- lwz r8,12(r4); \
- lwzu r9,16(r4); \
- stw r6,4(r3); \
- stw r7,8(r3); \
- stw r8,12(r3); \
- stwu r9,16(r3)
-
-_GLOBAL(copy_page)
- addi r3,r3,-4
- addi r4,r4,-4
- li r5,4
-
-#ifndef CONFIG_8xx
-#if MAX_COPY_PREFETCH > 1
- li r0,MAX_COPY_PREFETCH
- li r11,4
- mtctr r0
-11: dcbt r11,r4
- addi r11,r11,CACHE_LINE_SIZE
- bdnz 11b
-#else /* MAX_COPY_PREFETCH == 1 */
- dcbt r5,r4
- li r11,CACHE_LINE_SIZE+4
-#endif /* MAX_COPY_PREFETCH */
-#endif /* CONFIG_8xx */
-
- li r0,4096/CACHE_LINE_SIZE
- mtctr r0
-1:
-#ifndef CONFIG_8xx
- dcbt r11,r4
- dcbz r5,r3
-#endif
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 32
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 64
- COPY_16_BYTES
- COPY_16_BYTES
-#if CACHE_LINE_SIZE >= 128
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
- COPY_16_BYTES
-#endif
-#endif
-#endif
- bdnz 1b
- blr
diff --git a/arch/um/sys-ppc/miscthings.c b/arch/um/sys-ppc/miscthings.c
deleted file mode 100644
index 25908d26ce07..000000000000
--- a/arch/um/sys-ppc/miscthings.c
+++ /dev/null
@@ -1,42 +0,0 @@
-#include <linux/threads.h>
-#include <linux/stddef.h> // for NULL
-#include <linux/elf.h> // for AT_NULL
-
-/* The following function nicked from arch/ppc/kernel/process.c and
- * adapted slightly */
-/*
- * XXX ld.so expects the auxiliary table to start on
- * a 16-byte boundary, so we have to find it and
- * move it up. :-(
- */
-void shove_aux_table(unsigned long sp)
-{
- int argc;
- char *p;
- unsigned long e;
- unsigned long aux_start, offset;
-
- argc = *(int *)sp;
- sp += sizeof(int) + (argc + 1) * sizeof(char *);
- /* skip over the environment pointers */
- do {
- p = *(char **)sp;
- sp += sizeof(char *);
- } while (p != NULL);
- aux_start = sp;
- /* skip to the end of the auxiliary table */
- do {
- e = *(unsigned long *)sp;
- sp += 2 * sizeof(unsigned long);
- } while (e != AT_NULL);
- offset = ((aux_start + 15) & ~15) - aux_start;
- if (offset != 0) {
- do {
- sp -= sizeof(unsigned long);
- e = *(unsigned long *)sp;
- *(unsigned long *)(sp + offset) = e;
- } while (sp > aux_start);
- }
-}
-/* END stuff taken from arch/ppc/kernel/process.c */
-
diff --git a/arch/um/sys-ppc/ptrace.c b/arch/um/sys-ppc/ptrace.c
deleted file mode 100644
index 8245df41b201..000000000000
--- a/arch/um/sys-ppc/ptrace.c
+++ /dev/null
@@ -1,58 +0,0 @@
-#include <linux/sched.h>
-#include "asm/ptrace.h"
-
-int putreg(struct task_struct *child, unsigned long regno,
- unsigned long value)
-{
- child->thread.process_regs.regs[regno >> 2] = value;
- return 0;
-}
-
-int poke_user(struct task_struct *child, long addr, long data)
-{
- if ((addr & 3) || addr < 0)
- return -EIO;
-
- if (addr < MAX_REG_OFFSET)
- return putreg(child, addr, data);
-
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- if((addr == 4) || (addr == 5)) return -EIO;
- child->thread.arch.debugregs[addr] = data;
- return 0;
- }
- return -EIO;
-}
-
-unsigned long getreg(struct task_struct *child, unsigned long regno)
-{
- unsigned long retval = ~0UL;
-
- retval &= child->thread.process_regs.regs[regno >> 2];
- return retval;
-}
-
-int peek_user(struct task_struct *child, long addr, long data)
-{
- /* read the word at location addr in the USER area. */
- unsigned long tmp;
-
- if ((addr & 3) || addr < 0)
- return -EIO;
-
- tmp = 0; /* Default return condition */
- if(addr < MAX_REG_OFFSET){
- tmp = getreg(child, addr);
- }
- else if((addr >= offsetof(struct user, u_debugreg[0])) &&
- (addr <= offsetof(struct user, u_debugreg[7]))){
- addr -= offsetof(struct user, u_debugreg[0]);
- addr = addr >> 2;
- tmp = child->thread.arch.debugregs[addr];
- }
- return put_user(tmp, (unsigned long *) data);
-}
-
diff --git a/arch/um/sys-ppc/ptrace_user.c b/arch/um/sys-ppc/ptrace_user.c
deleted file mode 100644
index 4601b9296aa7..000000000000
--- a/arch/um/sys-ppc/ptrace_user.c
+++ /dev/null
@@ -1,29 +0,0 @@
-#include <errno.h>
-#include <asm/ptrace.h>
-#include <sysdep/ptrace.h>
-
-int ptrace_getregs(long pid, unsigned long *regs_out)
-{
- int i;
- for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
- errno = 0;
- regs_out->regs[i] = ptrace(PTRACE_PEEKUSR, pid, i*4, 0);
- if (errno) {
- return -errno;
- }
- }
- return 0;
-}
-
-int ptrace_setregs(long pid, unsigned long *regs_in)
-{
- int i;
- for (i=0; i < sizeof(struct sys_pt_regs)/sizeof(PPC_REG); ++i) {
- if (i != 34 /* FIXME: PT_ORIG_R3 */ && i <= PT_MQ) {
- if (ptrace(PTRACE_POKEUSR, pid, i*4, regs_in->regs[i]) < 0) {
- return -errno;
- }
- }
- }
- return 0;
-}
diff --git a/arch/um/sys-ppc/shared/sysdep/ptrace.h b/arch/um/sys-ppc/shared/sysdep/ptrace.h
deleted file mode 100644
index efe0c1a3ea9c..000000000000
--- a/arch/um/sys-ppc/shared/sysdep/ptrace.h
+++ /dev/null
@@ -1,93 +0,0 @@
-/*
- * Licensed under the GPL
- */
-
-#ifndef __SYS_PTRACE_PPC_H
-#define __SYS_PTRACE_PPC_H
-
-#include <linux/types.h>
-
-/* the following taken from <asm-ppc/ptrace.h> */
-
-#ifdef CONFIG_PPC64
-#define PPC_REG unsigned long /*long*/
-#else
-#define PPC_REG unsigned long
-#endif
-struct sys_pt_regs_s {
- PPC_REG gpr[32];
- PPC_REG nip;
- PPC_REG msr;
- PPC_REG orig_gpr3; /* Used for restarting system calls */
- PPC_REG ctr;
- PPC_REG link;
- PPC_REG xer;
- PPC_REG ccr;
- PPC_REG mq; /* 601 only (not used at present) */
- /* Used on APUS to hold IPL value. */
- PPC_REG trap; /* Reason for being here */
- PPC_REG dar; /* Fault registers */
- PPC_REG dsisr;
- PPC_REG result; /* Result of a system call */
-};
-
-#define NUM_REGS (sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG))
-
-struct sys_pt_regs {
- PPC_REG regs[sizeof(struct sys_pt_regs_s) / sizeof(PPC_REG)];
-};
-
-#define UM_MAX_REG (PT_FPR0)
-#define UM_MAX_REG_OFFSET (UM_MAX_REG * sizeof(PPC_REG))
-
-#define EMPTY_REGS { { [ 0 ... NUM_REGS - 1] = 0 } }
-
-#define UM_REG(r, n) ((r)->regs[n])
-
-#define UM_SYSCALL_RET(r) UM_REG(r, PT_R3)
-#define UM_SP(r) UM_REG(r, PT_R1)
-#define UM_IP(r) UM_REG(r, PT_NIP)
-#define UM_ELF_ZERO(r) UM_REG(r, PT_FPSCR)
-#define UM_SYSCALL_NR(r) UM_REG(r, PT_R0)
-#define UM_SYSCALL_ARG1(r) UM_REG(r, PT_ORIG_R3)
-#define UM_SYSCALL_ARG2(r) UM_REG(r, PT_R4)
-#define UM_SYSCALL_ARG3(r) UM_REG(r, PT_R5)
-#define UM_SYSCALL_ARG4(r) UM_REG(r, PT_R6)
-#define UM_SYSCALL_ARG5(r) UM_REG(r, PT_R7)
-#define UM_SYSCALL_ARG6(r) UM_REG(r, PT_R8)
-
-#define UM_SYSCALL_NR_OFFSET (PT_R0 * sizeof(PPC_REG))
-#define UM_SYSCALL_RET_OFFSET (PT_R3 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG1_OFFSET (PT_R3 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG2_OFFSET (PT_R4 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG3_OFFSET (PT_R5 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG4_OFFSET (PT_R6 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG5_OFFSET (PT_R7 * sizeof(PPC_REG))
-#define UM_SYSCALL_ARG6_OFFSET (PT_R8 * sizeof(PPC_REG))
-#define UM_SP_OFFSET (PT_R1 * sizeof(PPC_REG))
-#define UM_IP_OFFSET (PT_NIP * sizeof(PPC_REG))
-#define UM_ELF_ZERO_OFFSET (PT_R3 * sizeof(PPC_REG))
-
-#define UM_SET_SYSCALL_RETURN(_regs, result) \
-do { \
- if (result < 0) { \
- (_regs)->regs[PT_CCR] |= 0x10000000; \
- UM_SYSCALL_RET((_regs)) = -result; \
- } else { \
- UM_SYSCALL_RET((_regs)) = result; \
- } \
-} while(0)
-
-extern void shove_aux_table(unsigned long sp);
-#define UM_FIX_EXEC_STACK(sp) shove_aux_table(sp);
-
-/* These aren't actually defined. The undefs are just to make sure
- * everyone's clear on the concept.
- */
-#undef UML_HAVE_GETREGS
-#undef UML_HAVE_GETFPREGS
-#undef UML_HAVE_SETREGS
-#undef UML_HAVE_SETFPREGS
-
-#endif
-
diff --git a/arch/um/sys-ppc/shared/sysdep/sigcontext.h b/arch/um/sys-ppc/shared/sysdep/sigcontext.h
deleted file mode 100644
index b7286f0a1e00..000000000000
--- a/arch/um/sys-ppc/shared/sysdep/sigcontext.h
+++ /dev/null
@@ -1,52 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYS_SIGCONTEXT_PPC_H
-#define __SYS_SIGCONTEXT_PPC_H
-
-#define DSISR_WRITE 0x02000000
-
-#define SC_FAULT_ADDR(sc) ({ \
- struct sigcontext *_sc = (sc); \
- long retval = -1; \
- switch (_sc->regs->trap) { \
- case 0x300: \
- /* data exception */ \
- retval = _sc->regs->dar; \
- break; \
- case 0x400: \
- /* instruction exception */ \
- retval = _sc->regs->nip; \
- break; \
- default: \
- panic("SC_FAULT_ADDR: unhandled trap type\n"); \
- } \
- retval; \
- })
-
-#define SC_FAULT_WRITE(sc) ({ \
- struct sigcontext *_sc = (sc); \
- long retval = -1; \
- switch (_sc->regs->trap) { \
- case 0x300: \
- /* data exception */ \
- retval = !!(_sc->regs->dsisr & DSISR_WRITE); \
- break; \
- case 0x400: \
- /* instruction exception: not a write */ \
- retval = 0; \
- break; \
- default: \
- panic("SC_FAULT_ADDR: unhandled trap type\n"); \
- } \
- retval; \
- })
-
-#define SC_IP(sc) ((sc)->regs->nip)
-#define SC_SP(sc) ((sc)->regs->gpr[1])
-#define SEGV_IS_FIXABLE(sc) (1)
-
-#endif
-
diff --git a/arch/um/sys-ppc/shared/sysdep/skas_ptrace.h b/arch/um/sys-ppc/shared/sysdep/skas_ptrace.h
deleted file mode 100644
index d9fbbac10de0..000000000000
--- a/arch/um/sys-ppc/shared/sysdep/skas_ptrace.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_PPC_SKAS_PTRACE_H
-#define __SYSDEP_PPC_SKAS_PTRACE_H
-
-struct ptrace_faultinfo {
- int is_write;
- unsigned long addr;
-};
-
-struct ptrace_ldt {
- int func;
- void *ptr;
- unsigned long bytecount;
-};
-
-#define PTRACE_LDT 54
-
-#endif
diff --git a/arch/um/sys-ppc/shared/sysdep/syscalls.h b/arch/um/sys-ppc/shared/sysdep/syscalls.h
deleted file mode 100644
index 1ff81552251c..000000000000
--- a/arch/um/sys-ppc/shared/sysdep/syscalls.h
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-typedef long syscall_handler_t(unsigned long arg1, unsigned long arg2,
- unsigned long arg3, unsigned long arg4,
- unsigned long arg5, unsigned long arg6);
-
-#define EXECUTE_SYSCALL(syscall, regs) \
- (*sys_call_table[syscall])(UM_SYSCALL_ARG1(&regs), \
- UM_SYSCALL_ARG2(&regs), \
- UM_SYSCALL_ARG3(&regs), \
- UM_SYSCALL_ARG4(&regs), \
- UM_SYSCALL_ARG5(&regs), \
- UM_SYSCALL_ARG6(&regs))
-
-extern syscall_handler_t sys_mincore;
-extern syscall_handler_t sys_madvise;
-
-/* old_mmap needs the correct prototype since syscall_kern.c includes
- * this file.
- */
-int old_mmap(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long offset);
-
-#define ARCH_SYSCALLS \
- [ __NR_modify_ldt ] = sys_ni_syscall, \
- [ __NR_pciconfig_read ] = sys_ni_syscall, \
- [ __NR_pciconfig_write ] = sys_ni_syscall, \
- [ __NR_pciconfig_iobase ] = sys_ni_syscall, \
- [ __NR_pivot_root ] = sys_ni_syscall, \
- [ __NR_multiplexer ] = sys_ni_syscall, \
- [ __NR_mmap ] = old_mmap, \
- [ __NR_madvise ] = sys_madvise, \
- [ __NR_mincore ] = sys_mincore, \
- [ __NR_iopl ] = (syscall_handler_t *) sys_ni_syscall, \
- [ __NR_utimes ] = (syscall_handler_t *) sys_utimes, \
- [ __NR_fadvise64 ] = (syscall_handler_t *) sys_fadvise64,
-
-#define LAST_ARCH_SYSCALL __NR_fadvise64
-
diff --git a/arch/um/sys-ppc/sigcontext.c b/arch/um/sys-ppc/sigcontext.c
deleted file mode 100644
index aac6c83fe44e..000000000000
--- a/arch/um/sys-ppc/sigcontext.c
+++ /dev/null
@@ -1,4 +0,0 @@
-#include "asm/ptrace.h"
-#include "asm/sigcontext.h"
-#include <sysdep/ptrace.h>
-
diff --git a/arch/um/sys-ppc/sysrq.c b/arch/um/sys-ppc/sysrq.c
deleted file mode 100644
index 1ff1ad7f27da..000000000000
--- a/arch/um/sys-ppc/sysrq.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2001 Chris Emerson (cemerson@chiark.greenend.org.uk)
- * Licensed under the GPL
- */
-
-#include <linux/kernel.h>
-#include <linux/smp.h>
-#include "asm/ptrace.h"
-#include "sysrq.h"
-
-void show_regs(struct pt_regs_subarch *regs)
-{
- printk("\n");
- show_regs_print_info(KERN_DEFAULT);
-
- printk("show_regs(): insert regs here.\n");
-#if 0
- printk("\n");
- printk("EIP: %04x:[<%08lx>] CPU: %d",0xffff & regs->xcs, regs->eip,
- smp_processor_id());
- if (regs->xcs & 3)
- printk(" ESP: %04x:%08lx",0xffff & regs->xss, regs->esp);
- printk(" EFLAGS: %08lx\n", regs->eflags);
- printk("EAX: %08lx EBX: %08lx ECX: %08lx EDX: %08lx\n",
- regs->eax, regs->ebx, regs->ecx, regs->edx);
- printk("ESI: %08lx EDI: %08lx EBP: %08lx",
- regs->esi, regs->edi, regs->ebp);
- printk(" DS: %04x ES: %04x\n",
- 0xffff & regs->xds, 0xffff & regs->xes);
-#endif
-
- show_trace(current, &regs->gpr[1]);
-}
diff --git a/arch/x86/um/Makefile b/arch/x86/um/Makefile
index eafa324eb7a5..acb384d24669 100644
--- a/arch/x86/um/Makefile
+++ b/arch/x86/um/Makefile
@@ -21,7 +21,6 @@ obj-$(CONFIG_BINFMT_ELF) += elfcore.o
subarch-y = ../lib/string_32.o ../lib/atomic64_32.o ../lib/atomic64_cx8_32.o
subarch-$(CONFIG_RWSEM_XCHGADD_ALGORITHM) += ../lib/rwsem.o
-subarch-$(CONFIG_HIGHMEM) += ../mm/highmem_32.o
else
diff --git a/arch/x86/um/asm/barrier.h b/arch/x86/um/asm/barrier.h
index 8ffd2146fa6a..7e8a1a650435 100644
--- a/arch/x86/um/asm/barrier.h
+++ b/arch/x86/um/asm/barrier.h
@@ -36,22 +36,11 @@
#endif /* CONFIG_X86_PPRO_FENCE */
#define dma_wmb() barrier()
-#ifdef CONFIG_SMP
-
-#define smp_mb() mb()
-#define smp_rmb() dma_rmb()
-#define smp_wmb() barrier()
-#define set_mb(var, value) do { (void)xchg(&var, value); } while (0)
-
-#else /* CONFIG_SMP */
-
#define smp_mb() barrier()
#define smp_rmb() barrier()
#define smp_wmb() barrier()
#define set_mb(var, value) do { var = value; barrier(); } while (0)
-#endif /* CONFIG_SMP */
-
#define read_barrier_depends() do { } while (0)
#define smp_read_barrier_depends() do { } while (0)
diff --git a/arch/x86/um/asm/elf.h b/arch/x86/um/asm/elf.h
index 25a1022dd793..0a656b727b1a 100644
--- a/arch/x86/um/asm/elf.h
+++ b/arch/x86/um/asm/elf.h
@@ -210,7 +210,7 @@ extern int elf_core_copy_fpregs(struct task_struct *t, elf_fpregset_t *fpu);
#define ELF_EXEC_PAGESIZE 4096
-#define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
+#define ELF_ET_DYN_BASE (TASK_SIZE / 3 * 2)
extern long elf_aux_hwcap;
#define ELF_HWCAP (elf_aux_hwcap)
diff --git a/arch/x86/um/ldt.c b/arch/x86/um/ldt.c
index 8e08176f0bcb..5c0b711d2433 100644
--- a/arch/x86/um/ldt.c
+++ b/arch/x86/um/ldt.c
@@ -8,9 +8,7 @@
#include <linux/slab.h>
#include <asm/unistd.h>
#include <os.h>
-#include <proc_mm.h>
#include <skas.h>
-#include <skas_ptrace.h>
#include <sysdep/tls.h>
extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
@@ -19,105 +17,20 @@ static long write_ldt_entry(struct mm_id *mm_idp, int func,
struct user_desc *desc, void **addr, int done)
{
long res;
-
- if (proc_mm) {
- /*
- * This is a special handling for the case, that the mm to
- * modify isn't current->active_mm.
- * If this is called directly by modify_ldt,
- * (current->active_mm->context.skas.u == mm_idp)
- * will be true. So no call to __switch_mm(mm_idp) is done.
- * If this is called in case of init_new_ldt or PTRACE_LDT,
- * mm_idp won't belong to current->active_mm, but child->mm.
- * So we need to switch child's mm into our userspace, then
- * later switch back.
- *
- * Note: I'm unsure: should interrupts be disabled here?
- */
- if (!current->active_mm || current->active_mm == &init_mm ||
- mm_idp != &current->active_mm->context.id)
- __switch_mm(mm_idp);
- }
-
- if (ptrace_ldt) {
- struct ptrace_ldt ldt_op = (struct ptrace_ldt) {
- .func = func,
- .ptr = desc,
- .bytecount = sizeof(*desc)};
- u32 cpu;
- int pid;
-
- if (!proc_mm)
- pid = mm_idp->u.pid;
- else {
- cpu = get_cpu();
- pid = userspace_pid[cpu];
- }
-
- res = os_ptrace_ldt(pid, 0, (unsigned long) &ldt_op);
-
- if (proc_mm)
- put_cpu();
- }
- else {
- void *stub_addr;
- res = syscall_stub_data(mm_idp, (unsigned long *)desc,
- (sizeof(*desc) + sizeof(long) - 1) &
- ~(sizeof(long) - 1),
- addr, &stub_addr);
- if (!res) {
- unsigned long args[] = { func,
- (unsigned long)stub_addr,
- sizeof(*desc),
- 0, 0, 0 };
- res = run_syscall_stub(mm_idp, __NR_modify_ldt, args,
- 0, addr, done);
- }
+ void *stub_addr;
+ res = syscall_stub_data(mm_idp, (unsigned long *)desc,
+ (sizeof(*desc) + sizeof(long) - 1) &
+ ~(sizeof(long) - 1),
+ addr, &stub_addr);
+ if (!res) {
+ unsigned long args[] = { func,
+ (unsigned long)stub_addr,
+ sizeof(*desc),
+ 0, 0, 0 };
+ res = run_syscall_stub(mm_idp, __NR_modify_ldt, args,
+ 0, addr, done);
}
- if (proc_mm) {
- /*
- * This is the second part of special handling, that makes
- * PTRACE_LDT possible to implement.
- */
- if (current->active_mm && current->active_mm != &init_mm &&
- mm_idp != &current->active_mm->context.id)
- __switch_mm(&current->active_mm->context.id);
- }
-
- return res;
-}
-
-static long read_ldt_from_host(void __user * ptr, unsigned long bytecount)
-{
- int res, n;
- struct ptrace_ldt ptrace_ldt = (struct ptrace_ldt) {
- .func = 0,
- .bytecount = bytecount,
- .ptr = kmalloc(bytecount, GFP_KERNEL)};
- u32 cpu;
-
- if (ptrace_ldt.ptr == NULL)
- return -ENOMEM;
-
- /*
- * This is called from sys_modify_ldt only, so userspace_pid gives
- * us the right number
- */
-
- cpu = get_cpu();
- res = os_ptrace_ldt(userspace_pid[cpu], 0, (unsigned long) &ptrace_ldt);
- put_cpu();
- if (res < 0)
- goto out;
-
- n = copy_to_user(ptr, ptrace_ldt.ptr, res);
- if (n != 0)
- res = -EFAULT;
-
- out:
- kfree(ptrace_ldt.ptr);
-
return res;
}
@@ -145,9 +58,6 @@ static int read_ldt(void __user * ptr, unsigned long bytecount)
bytecount = LDT_ENTRY_SIZE*LDT_ENTRIES;
err = bytecount;
- if (ptrace_ldt)
- return read_ldt_from_host(ptr, bytecount);
-
mutex_lock(&ldt->lock);
if (ldt->entry_count <= LDT_DIRECT_ENTRIES) {
size = LDT_ENTRY_SIZE*LDT_DIRECT_ENTRIES;
@@ -229,17 +139,11 @@ static int write_ldt(void __user * ptr, unsigned long bytecount, int func)
goto out;
}
- if (!ptrace_ldt)
- mutex_lock(&ldt->lock);
+ mutex_lock(&ldt->lock);
err = write_ldt_entry(mm_idp, func, &ldt_info, &addr, 1);
if (err)
goto out_unlock;
- else if (ptrace_ldt) {
- /* With PTRACE_LDT available, this is used as a flag only */
- ldt->entry_count = 1;
- goto out;
- }
if (ldt_info.entry_number >= ldt->entry_count &&
ldt_info.entry_number >= LDT_DIRECT_ENTRIES) {
@@ -393,91 +297,56 @@ long init_new_ldt(struct mm_context *new_mm, struct mm_context *from_mm)
int i;
long page, err=0;
void *addr = NULL;
- struct proc_mm_op copy;
- if (!ptrace_ldt)
- mutex_init(&new_mm->arch.ldt.lock);
+ mutex_init(&new_mm->arch.ldt.lock);
if (!from_mm) {
memset(&desc, 0, sizeof(desc));
/*
- * We have to initialize a clean ldt.
+ * Now we try to retrieve info about the ldt, we
+ * inherited from the host. All ldt-entries found
+ * will be reset in the following loop
*/
- if (proc_mm) {
- /*
- * If the new mm was created using proc_mm, host's
- * default-ldt currently is assigned, which normally
- * contains the call-gates for lcall7 and lcall27.
- * To remove these gates, we simply write an empty
- * entry as number 0 to the host.
- */
- err = write_ldt_entry(&new_mm->id, 1, &desc, &addr, 1);
- }
- else{
- /*
- * Now we try to retrieve info about the ldt, we
- * inherited from the host. All ldt-entries found
- * will be reset in the following loop
- */
- ldt_get_host_info();
- for (num_p=host_ldt_entries; *num_p != -1; num_p++) {
- desc.entry_number = *num_p;
- err = write_ldt_entry(&new_mm->id, 1, &desc,
- &addr, *(num_p + 1) == -1);
- if (err)
- break;
- }
+ ldt_get_host_info();
+ for (num_p=host_ldt_entries; *num_p != -1; num_p++) {
+ desc.entry_number = *num_p;
+ err = write_ldt_entry(&new_mm->id, 1, &desc,
+ &addr, *(num_p + 1) == -1);
+ if (err)
+ break;
}
new_mm->arch.ldt.entry_count = 0;
goto out;
}
- if (proc_mm) {
- /*
- * We have a valid from_mm, so we now have to copy the LDT of
- * from_mm to new_mm, because using proc_mm an new mm with
- * an empty/default LDT was created in new_mm()
- */
- copy = ((struct proc_mm_op) { .op = MM_COPY_SEGMENTS,
- .u =
- { .copy_segments =
- from_mm->id.u.mm_fd } } );
- i = os_write_file(new_mm->id.u.mm_fd, &copy, sizeof(copy));
- if (i != sizeof(copy))
- printk(KERN_ERR "new_mm : /proc/mm copy_segments "
- "failed, err = %d\n", -i);
- }
-
- if (!ptrace_ldt) {
- /*
- * Our local LDT is used to supply the data for
- * modify_ldt(READLDT), if PTRACE_LDT isn't available,
- * i.e., we have to use the stub for modify_ldt, which
- * can't handle the big read buffer of up to 64kB.
- */
- mutex_lock(&from_mm->arch.ldt.lock);
- if (from_mm->arch.ldt.entry_count <= LDT_DIRECT_ENTRIES)
- memcpy(new_mm->arch.ldt.u.entries, from_mm->arch.ldt.u.entries,
- sizeof(new_mm->arch.ldt.u.entries));
- else {
- i = from_mm->arch.ldt.entry_count / LDT_ENTRIES_PER_PAGE;
- while (i-->0) {
- page = __get_free_page(GFP_KERNEL|__GFP_ZERO);
- if (!page) {
- err = -ENOMEM;
- break;
- }
- new_mm->arch.ldt.u.pages[i] =
- (struct ldt_entry *) page;
- memcpy(new_mm->arch.ldt.u.pages[i],
- from_mm->arch.ldt.u.pages[i], PAGE_SIZE);
+ /*
+ * Our local LDT is used to supply the data for
+ * modify_ldt(READLDT), if PTRACE_LDT isn't available,
+ * i.e., we have to use the stub for modify_ldt, which
+ * can't handle the big read buffer of up to 64kB.
+ */
+ mutex_lock(&from_mm->arch.ldt.lock);
+ if (from_mm->arch.ldt.entry_count <= LDT_DIRECT_ENTRIES)
+ memcpy(new_mm->arch.ldt.u.entries, from_mm->arch.ldt.u.entries,
+ sizeof(new_mm->arch.ldt.u.entries));
+ else {
+ i = from_mm->arch.ldt.entry_count / LDT_ENTRIES_PER_PAGE;
+ while (i-->0) {
+ page = __get_free_page(GFP_KERNEL|__GFP_ZERO);
+ if (!page) {
+ err = -ENOMEM;
+ break;
}
+ new_mm->arch.ldt.u.pages[i] =
+ (struct ldt_entry *) page;
+ memcpy(new_mm->arch.ldt.u.pages[i],
+ from_mm->arch.ldt.u.pages[i], PAGE_SIZE);
}
- new_mm->arch.ldt.entry_count = from_mm->arch.ldt.entry_count;
- mutex_unlock(&from_mm->arch.ldt.lock);
}
+ new_mm->arch.ldt.entry_count = from_mm->arch.ldt.entry_count;
+ mutex_unlock(&from_mm->arch.ldt.lock);
out:
return err;
@@ -488,7 +357,7 @@ void free_ldt(struct mm_context *mm)
{
int i;
- if (!ptrace_ldt && mm->arch.ldt.entry_count > LDT_DIRECT_ENTRIES) {
+ if (mm->arch.ldt.entry_count > LDT_DIRECT_ENTRIES) {
i = mm->arch.ldt.entry_count / LDT_ENTRIES_PER_PAGE;
while (i-- > 0)
free_page((long) mm->arch.ldt.u.pages[i]);
diff --git a/arch/x86/um/shared/sysdep/faultinfo_32.h b/arch/x86/um/shared/sysdep/faultinfo_32.h
index a26086b8a800..b6f2437ec29c 100644
--- a/arch/x86/um/shared/sysdep/faultinfo_32.h
+++ b/arch/x86/um/shared/sysdep/faultinfo_32.h
@@ -27,9 +27,6 @@ struct faultinfo {
/* This is Page Fault */
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
-/* SKAS3 has no trap_no on i386, but get_skas_faultinfo() sets it to 0. */
-#define SEGV_MAYBE_FIXABLE(fi) ((fi)->trap_no == 0 && ptrace_faultinfo)
-
#define PTRACE_FULL_FAULTINFO 0
#endif
diff --git a/arch/x86/um/shared/sysdep/faultinfo_64.h b/arch/x86/um/shared/sysdep/faultinfo_64.h
index f811cbe15d62..ee88f88974ea 100644
--- a/arch/x86/um/shared/sysdep/faultinfo_64.h
+++ b/arch/x86/um/shared/sysdep/faultinfo_64.h
@@ -27,9 +27,6 @@ struct faultinfo {
/* This is Page Fault */
#define SEGV_IS_FIXABLE(fi) ((fi)->trap_no == 14)
-/* No broken SKAS API, which doesn't pass trap_no, here. */
-#define SEGV_MAYBE_FIXABLE(fi) 0
-
#define PTRACE_FULL_FAULTINFO 1
#endif
diff --git a/arch/x86/um/shared/sysdep/skas_ptrace.h b/arch/x86/um/shared/sysdep/skas_ptrace.h
deleted file mode 100644
index 453febe98993..000000000000
--- a/arch/x86/um/shared/sysdep/skas_ptrace.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2000, 2001, 2002 Jeff Dike (jdike@karaya.com)
- * Licensed under the GPL
- */
-
-#ifndef __SYSDEP_X86_SKAS_PTRACE_H
-#define __SYSDEP_X86_SKAS_PTRACE_H
-
-struct ptrace_faultinfo {
- int is_write;
- unsigned long addr;
-};
-
-struct ptrace_ldt {
- int func;
- void *ptr;
- unsigned long bytecount;
-};
-
-#define PTRACE_LDT 54
-
-#endif