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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 <David.Kaplan@amd.com>
[extracted from larger unlrelated patch, forward ported, tested,style cleanup]
Signed-off-by: Joel Schopp <joel.schopp@amd.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
hifive-unleashed-5.1
David Kaplan 2015-03-02 13:43:37 -06:00 committed by Marcelo Tosatti
parent 5cb56059c9
commit dab429a798
1 changed files with 7 additions and 1 deletions
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8
arch/x86/kvm/svm.c
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@ -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,