From: Borislav Petkov <borislav.pet...@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.pet...@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
--
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