From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gleb Natapov Subject: Re: [PATCH 2/3] Add HYPER-V apic access MSRs. Date: Wed, 13 Jan 2010 16:30:07 +0200 Message-ID: <20100113143007.GA7549@redhat.com> References: <1263391197-9883-1-git-send-email-gleb@redhat.com> <1263391197-9883-3-git-send-email-gleb@redhat.com> <4B4DD837.6070102@codemonkey.ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: avi@redhat.com, kvm@vger.kernel.org To: Anthony Liguori Return-path: Received: from mx1.redhat.com ([209.132.183.28]:52332 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755317Ab0AMOaK (ORCPT ); Wed, 13 Jan 2010 09:30:10 -0500 Content-Disposition: inline In-Reply-To: <4B4DD837.6070102@codemonkey.ws> Sender: kvm-owner@vger.kernel.org List-ID: On Wed, Jan 13, 2010 at 08:27:03AM -0600, Anthony Liguori wrote: > On 01/13/2010 07:59 AM, Gleb Natapov wrote: > >Signed-off-by: Gleb Natapov > >Signed-off-by: Vadim Rozenfeld > > And perf results from this? Even just a rough idea of how helpful this is? > For those changes specifically no, but we already know that x2apic is very beneficial from performance POV and what HYPER-V defines here is exactly what makes x2apic improve performance. -- Gleb.