From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752005AbaB1Owu (ORCPT ); Fri, 28 Feb 2014 09:52:50 -0500 Received: from mx1.redhat.com ([209.132.183.28]:9220 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751586AbaB1Ows (ORCPT ); Fri, 28 Feb 2014 09:52:48 -0500 Date: Fri, 28 Feb 2014 11:52:34 -0300 From: Marcelo Tosatti To: Andrew Jones Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com Subject: Re: [PATCH 0/2 v2] x86: kvm: global clock updates Message-ID: <20140228145234.GA13771@amt.cnet> References: <1393588375-13664-1-git-send-email-drjones@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1393588375-13664-1-git-send-email-drjones@redhat.com> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Feb 28, 2014 at 12:52:53PM +0100, Andrew Jones wrote: > This patch series addresses two issues with global clock updates. > The first fixes a bug found on hosts that have a tsc marked as > unstable. As global clock updates get triggered on every vcpu load > in these cases, guests with a large number of vcpus have their > progress nearly halted. The fix for that bug should also go to > stable. The second patch in this series ensures that NTP corrections > on the host, as well as on guests with all vcpus pinned, will be > propagated periodically. That patch improves things, but doesn't > fix a bug, thus it can be merged at a later time than the first. > I've posted them together as a series, as the second one builds > on the first. > > Andrew Jones (2): > x86: kvm: rate-limit global clock updates > x86: kvm: introduce periodic global clock updates > > arch/x86/include/asm/kvm_host.h | 2 + > arch/x86/kvm/x86.c | 92 +++++++++++++++++++++++++++++++++++++++-- > 2 files changed, 90 insertions(+), 4 deletions(-) > > -- > 1.8.1.4 Looks good.