Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755366AbZLODg3 (ORCPT ); Mon, 14 Dec 2009 22:36:29 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750950AbZLODg2 (ORCPT ); Mon, 14 Dec 2009 22:36:28 -0500 Received: from mx1.redhat.com ([209.132.183.28]:2505 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1749667AbZLODg1 (ORCPT ); Mon, 14 Dec 2009 22:36:27 -0500 Message-ID: <4B2704B2.10709@redhat.com> Date: Mon, 14 Dec 2009 17:38:26 -1000 From: Zachary Amsden User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.4pre) Gecko/20090922 Fedora/3.0-3.9.b4.fc12 Thunderbird/3.0b4 MIME-Version: 1.0 To: Joerg Roedel CC: Avi Kivity , Marcelo Tosatti , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] KVM: SVM: Adjust tsc_offset only if tsc_unstable References: <1260789740-14847-1-git-send-email-joerg.roedel@amd.com> In-Reply-To: <1260789740-14847-1-git-send-email-joerg.roedel@amd.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 743 Lines: 21 On 12/14/2009 01:22 AM, Joerg Roedel wrote: > The tsc_offset adjustment in svm_vcpu_load is executed > unconditionally even if Linux considers the host tsc as > stable. This causes a Linux guest detecting an unstable tsc > in any case. > This patch removes the tsc_offset adjustment if the host tsc > is stable. The guest will now get the benefit of a stable > tsc too. > > Hi Joerg, I have a much more comprehensive series of patches to address this issue, please take a look. Thanks, Zach -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/