Re: [PATCH] x86: svm: make wbinvd faster

From: Radim KrÄmÃÅ
Date: Mon Mar 02 2015 - 09:10:18 EST


2015-02-27 18:19-0600, Joel Schopp:
> From: David Kaplan <David.Kaplan@xxxxxxx>
> No need to re-decode WBINVD since we know what it is from the intercept.
>
> Signed-off-by: David Kaplan <David.Kaplan@xxxxxxx>
> [extracted from larger unlrelated patch, forward ported, tested]
> Signed-off-by: Joel Schopp <joel.schopp@xxxxxxx>
> ---

Reviewed-by: Radim KrÄmÃÅ <rkrcmar@xxxxxxxxxx>

> diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
> +static int wbinvd_interception(struct vcpu_svm *svm)
> +{
> + kvm_emulate_wbinvd(&svm->vcpu);
> + skip_emulated_instruction(&svm->vcpu);
> + return 1;
> +}
> +
> +

(One line is optimal.)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/