lkml.org 
[lkml]   [2015]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH v2 2/2] x86: svm: make wbinvd faster
2015-03-02 12:04-0600, Joel Schopp:
> From: David Kaplan <David.Kaplan@amd.com>
> 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]
> Signed-off-by: Joel Schopp <joel.schopp@amd.com>
> ---

Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>

> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> @@ -2774,6 +2774,13 @@ 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;
> +}
> +
> +

(Squashing these lines would have been a nice improvement.)

> static int xsetbv_interception(struct vcpu_svm *svm)
> {
> u64 new_bv = kvm_read_edx_eax(&svm->vcpu);


\
 
 \ /
  Last update: 2015-03-02 20:21    [W:0.204 / U:0.556 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site