github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-05-31 02:24:24 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

KVM: SVM: Simplify MSR interception logic for IA32_XSS MSR

Browse Source 
Use svm_set_intercept_for_msr() directly to configure IA32_XSS MSR
interception, ensuring consistency with other cases where MSRs are
intercepted depending on guest caps and CPUIDs.

No functional change intended.

Signed-off-by: Chao Gao <chao.gao@intel.com>
Reviewed-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Reviewed-by: Binbin Wu <binbin.wu@linux.intel.com>
Link: https://lore.kernel.org/r/20250612081947.94081-3-chao.gao@intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Chao Gao 2025-06-12 01:19:47 -07:00 committed by Sean Christopherson
parent 3f06b8927a
commit 05186d7a8e
1 changed files with 3 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
arch/x86/kvm/svm/sev.c
View File

@ -4410,11 +4410,9 @@ void sev_es_recalc_msr_intercepts(struct kvm_vcpu *vcpu)
* XSAVES being exposed to the guest so that KVM can at least honor
* guest CPUID for RDMSR and WRMSR.
*/
if (guest_cpu_cap_has(vcpu, X86_FEATURE_XSAVES) &&
guest_cpuid_has(vcpu, X86_FEATURE_XSAVES))
svm_disable_intercept_for_msr(vcpu, MSR_IA32_XSS, MSR_TYPE_RW);
else
svm_enable_intercept_for_msr(vcpu, MSR_IA32_XSS, MSR_TYPE_RW);
svm_set_intercept_for_msr(vcpu, MSR_IA32_XSS, MSR_TYPE_RW,
!guest_cpu_cap_has(vcpu, X86_FEATURE_XSAVES) ||
!guest_cpuid_has(vcpu, X86_FEATURE_XSAVES));
}
void sev_vcpu_after_set_cpuid(struct vcpu_svm *svm)