diff options
| author | Borislav Petkov (AMD) | 2023-06-29 17:43:40 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2023-08-08 20:03:50 +0200 |
| commit | 98f62883e7519011bf63f85381d637f65d7f180e (patch) | |
| tree | 667f0981ccfcad10dac7d04775b5f553c4d1e12b /arch/x86/kvm | |
| parent | 9139f4b6dd4fe1003ba79ab317d1a9f48849b369 (diff) | |
x86/srso: Add SRSO_NO support
Upstream commit: 1b5277c0ea0b247393a9c426769fde18cff5e2f6
Add support for the CPUID flag which denotes that the CPU is not
affected by SRSO.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/cpuid.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 6047dbe04880..7b4224f5ee2d 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -736,6 +736,9 @@ void kvm_set_cpu_caps(void) F(PMM) | F(PMM_EN) ); + if (cpu_feature_enabled(X86_FEATURE_SRSO_NO)) + kvm_cpu_cap_set(X86_FEATURE_SRSO_NO); + /* * Hide RDTSCP and RDPID if either feature is reported as supported but * probing MSR_TSC_AUX failed. This is purely a sanity check and |