summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/traps.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/traps.c')
-rw-r--r--arch/x86/kernel/traps.c64
1 files changed, 9 insertions, 55 deletions
diff --git a/arch/x86/kernel/traps.c b/arch/x86/kernel/traps.c
index a9e7548e179..a1d288327ff 100644
--- a/arch/x86/kernel/traps.c
+++ b/arch/x86/kernel/traps.c
@@ -54,15 +54,14 @@
#include <asm/desc.h>
#include <asm/i387.h>
-#include <mach_traps.h>
+#include <asm/mach_traps.h>
#ifdef CONFIG_X86_64
#include <asm/pgalloc.h>
#include <asm/proto.h>
-#include <asm/pda.h>
#else
#include <asm/processor-flags.h>
-#include <asm/arch_hooks.h>
+#include <asm/setup.h>
#include <asm/traps.h>
#include "cpu/mcheck/mce.h"
@@ -119,47 +118,6 @@ die_if_kernel(const char *str, struct pt_regs *regs, long err)
if (!user_mode_vm(regs))
die(str, regs, err);
}
-
-/*
- * Perform the lazy TSS's I/O bitmap copy. If the TSS has an
- * invalid offset set (the LAZY one) and the faulting thread has
- * a valid I/O bitmap pointer, we copy the I/O bitmap in the TSS,
- * we set the offset field correctly and return 1.
- */
-static int lazy_iobitmap_copy(void)
-{
- struct thread_struct *thread;
- struct tss_struct *tss;
- int cpu;
-
- cpu = get_cpu();
- tss = &per_cpu(init_tss, cpu);
- thread = &current->thread;
-
- if (tss->x86_tss.io_bitmap_base == INVALID_IO_BITMAP_OFFSET_LAZY &&
- thread->io_bitmap_ptr) {
- memcpy(tss->io_bitmap, thread->io_bitmap_ptr,
- thread->io_bitmap_max);
- /*
- * If the previously set map was extending to higher ports
- * than the current one, pad extra space with 0xff (no access).
- */
- if (thread->io_bitmap_max < tss->io_bitmap_max) {
- memset((char *) tss->io_bitmap +
- thread->io_bitmap_max, 0xff,
- tss->io_bitmap_max - thread->io_bitmap_max);
- }
- tss->io_bitmap_max = thread->io_bitmap_max;
- tss->x86_tss.io_bitmap_base = IO_BITMAP_OFFSET;
- tss->io_bitmap_owner = thread;
- put_cpu();
-
- return 1;
- }
- put_cpu();
-
- return 0;
-}
#endif
static void __kprobes
@@ -310,11 +268,6 @@ do_general_protection(struct pt_regs *regs, long error_code)
conditional_sti(regs);
#ifdef CONFIG_X86_32
- if (lazy_iobitmap_copy()) {
- /* restart the faulting instruction */
- return;
- }
-
if (regs->flags & X86_VM_MASK)
goto gp_in_vm86;
#endif
@@ -914,19 +867,20 @@ void math_emulate(struct math_emu_info *info)
}
#endif /* CONFIG_MATH_EMULATION */
-dotraplinkage void __kprobes do_device_not_available(struct pt_regs regs)
+dotraplinkage void __kprobes
+do_device_not_available(struct pt_regs *regs, long error_code)
{
#ifdef CONFIG_X86_32
if (read_cr0() & X86_CR0_EM) {
struct math_emu_info info = { };
- conditional_sti(&regs);
+ conditional_sti(regs);
- info.regs = &regs;
+ info.regs = regs;
math_emulate(&info);
} else {
math_state_restore(); /* interrupts still off */
- conditional_sti(&regs);
+ conditional_sti(regs);
}
#else
math_state_restore();
@@ -942,7 +896,7 @@ dotraplinkage void do_iret_error(struct pt_regs *regs, long error_code)
info.si_signo = SIGILL;
info.si_errno = 0;
info.si_code = ILL_BADSTK;
- info.si_addr = 0;
+ info.si_addr = NULL;
if (notify_die(DIE_TRAP, "iret exception",
regs, error_code, 32, SIGILL) == NOTIFY_STOP)
return;
@@ -1026,6 +980,6 @@ void __init trap_init(void)
cpu_init();
#ifdef CONFIG_X86_32
- trap_init_hook();
+ x86_quirk_trap_init();
#endif
}