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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 17:42:03 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-10-26 17:42:03 +0200 |
| commit | 7b86572a7a920e3181b041b8d1a01582e4610b66 (patch) | |
| tree | d0c76905c962ebf1a36c58b70cd24dbb6ba51d3d /arch/x86/mm | |
| parent | 0791e98dd1cd1833547f814188b25b6c8c711ad5 (diff) | |
| parent | eab9e6137f237681a04649e786cc4d942bedd6d1 (diff) | |
| download | linux-7b86572a7a920e3181b041b8d1a01582e4610b66.tar.bz2 | |
Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
* 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86-64: Fix CFI data for interrupt frames
x86-64: Don't apply destructive erratum workaround on unaffected CPUs
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/fault.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/mm/fault.c b/arch/x86/mm/fault.c index 0d17c8c50acd..9c7378df740a 100644 --- a/arch/x86/mm/fault.c +++ b/arch/x86/mm/fault.c @@ -420,12 +420,14 @@ static noinline __kprobes int vmalloc_fault(unsigned long address) return 0; } +#ifdef CONFIG_CPU_SUP_AMD static const char errata93_warning[] = KERN_ERR "******* Your BIOS seems to not contain a fix for K8 errata #93\n" "******* Working around it, but it may cause SEGVs or burn power.\n" "******* Please consider a BIOS update.\n" "******* Disabling USB legacy in the BIOS may also help.\n"; +#endif /* * No vm86 mode in 64-bit mode: @@ -505,7 +507,11 @@ bad: */ static int is_errata93(struct pt_regs *regs, unsigned long address) { -#ifdef CONFIG_X86_64 +#if defined(CONFIG_X86_64) && defined(CONFIG_CPU_SUP_AMD) + if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD + || boot_cpu_data.x86 != 0xf) + return 0; + if (address != regs->ip) return 0; |