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| author | Kim Phillips <kim.phillips@amd.com> | 2023-01-10 16:46:37 -0600 |
|---|---|---|
| committer | Borislav Petkov (AMD) <bp@alien8.de> | 2023-01-25 12:33:06 +0100 |
| commit | 8415a74852d7c24795007ee9862d25feb519007c (patch) | |
| tree | 089cb958df335d0179604b6129795ed56c3dc494 /arch/x86/kernel | |
| parent | e12ad468c22065a2826b2fc4c11d2113a7975301 (diff) | |
| download | linux-8415a74852d7c24795007ee9862d25feb519007c.tar.gz linux-8415a74852d7c24795007ee9862d25feb519007c.tar.bz2 linux-8415a74852d7c24795007ee9862d25feb519007c.zip | |
x86/cpu, kvm: Add support for CPUID_80000021_EAX
Add support for CPUID leaf 80000021, EAX. The majority of the features will be
used in the kernel and thus a separate leaf is appropriate.
Include KVM's reverse_cpuid entry because features are used by VM guests, too.
[ bp: Massage commit message. ]
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20230124163319.2277355-2-kim.phillips@amd.com
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/cpu/common.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c index b7ac85a1e5df..e6f32347ac87 100644 --- a/arch/x86/kernel/cpu/common.c +++ b/arch/x86/kernel/cpu/common.c @@ -1093,6 +1093,9 @@ void get_cpu_cap(struct cpuinfo_x86 *c) if (c->extended_cpuid_level >= 0x8000001f) c->x86_capability[CPUID_8000_001F_EAX] = cpuid_eax(0x8000001f); + if (c->extended_cpuid_level >= 0x80000021) + c->x86_capability[CPUID_8000_0021_EAX] = cpuid_eax(0x80000021); + init_scattered_cpuid_features(c); init_speculation_control(c); |