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| author | Sean Christopherson <sean.j.christopherson@intel.com> | 2021-02-03 19:34:08 +0800 |
|---|---|---|
| committer | Mike Rapoport <rppt@linux.ibm.com> | 2022-02-16 21:25:04 +0200 |
| commit | 6189c6f50e022a416cbd8620b5c17b0a88b6a0c7 (patch) | |
| tree | df2419eaf9916290dc3f8352c1a4332a8fa871e3 | |
| parent | 7e3b90071ba689b42060128ba7466e9cd1caf2b8 (diff) | |
| download | linux-6189c6f50e022a416cbd8620b5c17b0a88b6a0c7.tar.gz | |
KVM: x86: Report XSS as an MSR to be saved if there are supported features
Add MSR_IA32_XSS to the list of MSRs reported to userspace if
supported_xss is non-zero, i.e. KVM supports at least one XSS based
feature.
Co-developed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Yang Weijiang <weijiang.yang@intel.com>
Message-Id: <20210203113421.5759-2-weijiang.yang@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7131d735b1ef3..badee8dee7f82 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1390,6 +1390,7 @@ static const u32 msrs_to_save_all[] = { MSR_F15H_PERF_CTR0, MSR_F15H_PERF_CTR1, MSR_F15H_PERF_CTR2, MSR_F15H_PERF_CTR3, MSR_F15H_PERF_CTR4, MSR_F15H_PERF_CTR5, MSR_IA32_XFD, MSR_IA32_XFD_ERR, + MSR_IA32_XSS, }; static u32 msrs_to_save[ARRAY_SIZE(msrs_to_save_all)]; @@ -6583,6 +6584,8 @@ static void kvm_init_msr_list(void) case MSR_IA32_XFD: case MSR_IA32_XFD_ERR: if (!kvm_cpu_cap_has(X86_FEATURE_XFD)) + case MSR_IA32_XSS: + if (!supported_xss) continue; break; default: |