diff options
| author | Peng Hao <flyingpeng@tencent.com> | 2025-03-06 15:54:25 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2025-04-25 16:19:56 -0700 |
| commit | bb5081f4abf2d91ae3ed22d7d1157c91d23db5ed (patch) | |
| tree | 67ba6508514c334531c067ffaf286c6b2fdb69e0 | |
| parent | b6bc164f41dbee11a4f2913f8fda22066689aa95 (diff) | |
KVM: SVM: avoid frequency indirect calls
When retpoline is enabled, indirect function calls introduce additional
performance overhead. Avoid frequent indirect calls to VMGEXIT when SEV
is enabled.
Signed-off-by: Peng Hao <flyingpeng@tencent.com>
Link: https://lore.kernel.org/r/20250306075425.66693-1-flyingpeng@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | arch/x86/kvm/svm/svm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c index 6de35274d278..dca87d9e5850 100644 --- a/arch/x86/kvm/svm/svm.c +++ b/arch/x86/kvm/svm/svm.c @@ -3626,6 +3626,10 @@ int svm_invoke_exit_handler(struct kvm_vcpu *vcpu, u64 exit_code) return kvm_emulate_halt(vcpu); else if (exit_code == SVM_EXIT_NPF) return npf_interception(vcpu); +#ifdef CONFIG_KVM_AMD_SEV + else if (exit_code == SVM_EXIT_VMGEXIT) + return sev_handle_vmgexit(vcpu); +#endif #endif return svm_exit_handlers[exit_code](vcpu); } |