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| author | Sean Christopherson <seanjc@google.com> | 2025-08-06 12:56:47 -0700 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-09-18 12:57:19 -0700 |
| commit | 5a1a726e68ff256f564cf51ad21a96bceb4dd954 (patch) | |
| tree | b704729a2afcb5cb60870cd54abcbff200fdf537 /arch/x86/kvm/svm | |
| parent | KVM: x86: Rework KVM_REQ_MSR_FILTER_CHANGED into a generic RECALC_INTERCEPTS (diff) | |
| download | linux-5a1a726e68ff256f564cf51ad21a96bceb4dd954.tar.gz linux-5a1a726e68ff256f564cf51ad21a96bceb4dd954.zip | |
KVM: x86: Use KVM_REQ_RECALC_INTERCEPTS to react to CPUID updates
Defer recalculating MSR and instruction intercepts after a CPUID update
via RECALC_INTERCEPTS to converge on RECALC_INTERCEPTS as the "official"
mechanism for triggering recalcs. As a bonus, because KVM does a "recalc"
during vCPU creation, and every functional VMM sets CPUID at least once,
for all intents and purposes this saves at least one recalc.
Tested-by: Xudong Hao <xudong.hao@intel.com>
Link: https://lore.kernel.org/r/20250806195706.1650976-26-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/kvm/svm')
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 711f160113d1..22c5e4ffa132 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -1225,7 +1225,7 @@ static void init_vmcb(struct kvm_vcpu *vcpu) svm_hv_init_vmcb(vmcb); - svm_recalc_intercepts(vcpu); + kvm_make_request(KVM_REQ_RECALC_INTERCEPTS, vcpu); vmcb_mark_all_dirty(vmcb); @@ -4478,8 +4478,6 @@ static void svm_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu) if (sev_guest(vcpu->kvm)) sev_vcpu_after_set_cpuid(svm); - - svm_recalc_intercepts(vcpu); } static bool svm_has_wbinvd_exit(void) |