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This destroys exisiting RMPOPT optimizations in the regions where pages are converted. Conversely, guest pages are converted back to shared during SNP guest termination and their region may become eligible for RMPOPT optimization. To take advantage of this, perform RMPOPT after guest termination. Do it after a delay so that a single RMPOPT pass can be done if multiple guests terminate in a short period of time. Acked-by: Dave Hansen Reviewed-by: Ackerley Tng Signed-off-by: Ashish Kalra --- arch/x86/kvm/svm/sev.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index e107f368ed2d..29af6f6e603c 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -3005,6 +3005,8 @@ void sev_vm_destroy(struct kvm *kvm) */ if (snp_decommission_context(kvm)) return; + + snp_rmpopt_all_physmem(); } else { sev_unbind_asid(kvm, sev->handle); } -- 2.43.0