Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH 2/4] x86, CPU: Extend TLB size detection for AMD | Date | Fri, 3 Aug 2012 18:37:47 +0200 |
| |
From: Borislav Petkov <borislav.petkov@amd.com>
TLB characteristics on AMD are in the extended CPUID level, leafs 0x8000000{5,6} so we need to check those before doing the detection.
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com> --- arch/x86/kernel/cpu/common.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index d239977f361f..ebab0e77e691 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -940,7 +940,8 @@ void __init identify_boot_cpu(void) #else vgetcpu_set_mode(); #endif - if (boot_cpu_data.cpuid_level >= 2) + if (boot_cpu_data.cpuid_level >= 2 || + boot_cpu_data.extended_cpuid_level >= 0x80000006) cpu_detect_tlb(&boot_cpu_data); } -- 1.7.11.rc1
| |