When reloading the guest VMSA for an SEV-SNP vCPU, KVM retrieves the PFN from guest_memfd. Drop the page reference immediately after retrieving the PFN instead of holding it across MMU lock acquisition in preparation for a follow-up patch to stop returning page pointers from guest_memfd PFN lookups. This is safe because the page's validity and presence are governed by KVM's MMU invalidation protocol rather than the page reference. No functional change intended. Reviewed-by: Michael Roth Signed-off-by: Ackerley Tng --- arch/x86/kvm/svm/sev.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index f9dce8acac8eb..f094b19226b92 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -4078,6 +4078,7 @@ static void __sev_snp_reload_vmsa(struct kvm_vcpu *vcpu, gpa_t gpa) */ if (kvm_gmem_get_pfn(vcpu->kvm, slot, gfn, &pfn, &page, NULL)) return; + kvm_release_page_clean(page); read_lock(&kvm->mmu_lock); /* @@ -4092,8 +4093,6 @@ static void __sev_snp_reload_vmsa(struct kvm_vcpu *vcpu, gpa_t gpa) else svm->vmcb->control.vmsa_pa = pfn_to_hpa(pfn); read_unlock(&kvm->mmu_lock); - - kvm_release_page_clean(page); } /* -- 2.55.0.887.g758fc8c411-goog