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authorLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 19:56:02 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-11-14 19:56:02 -0800
commit4060994c3e337b40e0f6fa8ce2cc178e021baf3d (patch)
tree980297c1747ca89354bc879cc5d17903eacb19e2 /arch/x86_64/mm/fault.c
parent0174f72f848dfe7dc7488799776303c81b181b16 (diff)
parentd3ee871e63d0a0c70413dc0aa5534b8d6cd6ec37 (diff)
Merge x86-64 update from Andi
Diffstat (limited to 'arch/x86_64/mm/fault.c')
-rw-r--r--arch/x86_64/mm/fault.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index b75b872ec15..3a63707a698 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -308,18 +308,6 @@ asmlinkage void __kprobes do_page_fault(struct pt_regs *regs,
unsigned long flags;
siginfo_t info;
-#ifdef CONFIG_CHECKING
- {
- unsigned long gs;
- struct x8664_pda *pda = cpu_pda + stack_smp_processor_id();
- rdmsrl(MSR_GS_BASE, gs);
- if (gs != (unsigned long)pda) {
- wrmsrl(MSR_GS_BASE, pda);
- printk("page_fault: wrong gs %lx expected %p\n", gs, pda);
- }
- }
-#endif
-
/* get the address */
__asm__("movq %%cr2,%0":"=r" (address));
if (notify_die(DIE_PAGE_FAULT, "page fault", regs, error_code, 14,
@@ -571,3 +559,10 @@ do_sigbus:
force_sig_info(SIGBUS, &info, tsk);
return;
}
+
+static int __init enable_pagefaulttrace(char *str)
+{
+ page_fault_trace = 1;
+ return 0;
+}
+__setup("pagefaulttrace", enable_pagefaulttrace);