From: David Kaplan Date: Mon, 2 Mar 2015 19:43:37 +0000 (-0600) Subject: kvm: svm: make wbinvd faster X-Git-Tag: v4.9.8~4520^2~44 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=dab429a798a8ab3377136e09dda55ea75a41648d;p=platform%2Fkernel%2Flinux-rpi3.git kvm: svm: make wbinvd faster No need to re-decode WBINVD since we know what it is from the intercept. Signed-off-by: David Kaplan [extracted from larger unlrelated patch, forward ported, tested,style cleanup] Signed-off-by: Joel Schopp Reviewed-by: Radim Krčmář Signed-off-by: Marcelo Tosatti --- diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c index 16d6e5c..8f66585 100644 --- a/arch/x86/kvm/svm.c +++ b/arch/x86/kvm/svm.c @@ -2774,6 +2774,12 @@ static int skinit_interception(struct vcpu_svm *svm) return 1; } +static int wbinvd_interception(struct vcpu_svm *svm) +{ + kvm_emulate_wbinvd(&svm->vcpu); + return 1; +} + static int xsetbv_interception(struct vcpu_svm *svm) { u64 new_bv = kvm_read_edx_eax(&svm->vcpu); @@ -3373,7 +3379,7 @@ static int (*const svm_exit_handlers[])(struct vcpu_svm *svm) = { [SVM_EXIT_STGI] = stgi_interception, [SVM_EXIT_CLGI] = clgi_interception, [SVM_EXIT_SKINIT] = skinit_interception, - [SVM_EXIT_WBINVD] = emulate_on_interception, + [SVM_EXIT_WBINVD] = wbinvd_interception, [SVM_EXIT_MONITOR] = monitor_interception, [SVM_EXIT_MWAIT] = mwait_interception, [SVM_EXIT_XSETBV] = xsetbv_interception,