From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: xen.git branch reorg / success with 2.6.30-rc3 pv_ops dom0 Date: Tue, 16 Jun 2009 12:31:20 -0700 Message-ID: <4A37F308.6090202@goop.org> References: <1244218353.27370.216.camel@zakaz.uk.xensource.com> <20090605181925.GC24960@edu.joroinen.fi> <1244475935.27370.309.camel@zakaz.uk.xensource.com> <1244476858.27370.325.camel@zakaz.uk.xensource.com> <4A2E9BC3.4060507@goop.org> <1244710938.27370.502.camel@zakaz.uk.xensource.com> <1244711914.27370.511.camel@zakaz.uk.xensource.com> <20090611182709.GV24960@edu.joroinen.fi> <20090611193437.GX24960@edu.joroinen.fi> <1245060197.27370.618.camel@zakaz.uk.xensource.com> <20090615102128.GB24960@edu.joroinen.fi> <1245148525.5862.27.camel@zakaz.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1245148525.5862.27.camel@zakaz.uk.xensource.com> List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Ian Campbell Cc: Xen-devel List-Id: xen-devel@lists.xenproject.org On 06/16/09 03:35, Ian Campbell wrote: > Interesting in the light of a comment from Ingo Molnar this morning on > LKML: > >> Plus this system is an old P4 HyperThreading dual-socket system: >> pretty much the only thing HyperThreading is good for on that box is >> finding SMP races: that CPU can (and will) yield between >> hyperthreads on arbitrary instruction boundaries - opening up races >> wide open. >> Yes, I was wondering if HT could be a factor here. My test server is HT, but I run it 64-bit... J