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-rw-r--r--arch/x86/mm/fault.c8
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)
420 return 0; 420 return 0;
421} 421}
422 422
423#ifdef CONFIG_CPU_SUP_AMD
423static const char errata93_warning[] = 424static const char errata93_warning[] =
424KERN_ERR 425KERN_ERR
425"******* Your BIOS seems to not contain a fix for K8 errata #93\n" 426"******* Your BIOS seems to not contain a fix for K8 errata #93\n"
426"******* Working around it, but it may cause SEGVs or burn power.\n" 427"******* Working around it, but it may cause SEGVs or burn power.\n"
427"******* Please consider a BIOS update.\n" 428"******* Please consider a BIOS update.\n"
428"******* Disabling USB legacy in the BIOS may also help.\n"; 429"******* Disabling USB legacy in the BIOS may also help.\n";
430#endif
429 431
430/* 432/*
431 * No vm86 mode in 64-bit mode: 433 * No vm86 mode in 64-bit mode:
@@ -505,7 +507,11 @@ bad:
505 */ 507 */
506static int is_errata93(struct pt_regs *regs, unsigned long address) 508static int is_errata93(struct pt_regs *regs, unsigned long address)
507{ 509{
508#ifdef CONFIG_X86_64 510#if defined(CONFIG_X86_64) && defined(CONFIG_CPU_SUP_AMD)
511 if (boot_cpu_data.x86_vendor != X86_VENDOR_AMD
512 || boot_cpu_data.x86 != 0xf)
513 return 0;
514
509 if (address != regs->ip) 515 if (address != regs->ip)
510 return 0; 516 return 0;
511 517