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Commit dab429a7 authored by David Kaplan's avatar David Kaplan Committed by Marcelo Tosatti
Browse files

kvm: svm: make wbinvd faster 



No need to re-decode WBINVD since we know what it is from the intercept.

Signed-off-by: default avatarDavid Kaplan <David.Kaplan@amd.com>
[extracted from larger unlrelated patch, forward ported, tested,style cleanup]
Signed-off-by: default avatarJoel Schopp <joel.schopp@amd.com>
Reviewed-by: default avatarRadim Krčmář <rkrcmar@redhat.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 5cb56059

arch/x86/kvm/svm.c

+7 −1
Original line number Diff line number Diff line
@@ -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,