From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mats Petersson Subject: Re: [PATCH] x86/time: fix scale_delta() inline assembly Date: Mon, 26 Nov 2012 16:59:43 +0000 Message-ID: <50B39FFF.6000209@citrix.com> References: <50B3978F02000078000AB3A3@nat28.tlf.novell.com> <9efb590f-8c59-496b-97ea-8c39d77c203a@default> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; Format="flowed" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On 26/11/12 16:51, Sylvain Munaut wrote: > I've just deployed this to a couple test servers that exhibited the problem. > > What I don't really understand is why are some HW affected and not others ? I have no idea why some machines are more affected than others, but I can clearly see what Jan is saying, and how it will cause "weird" things to happen - but only if you hit the case where the calls are made in the right pattern, which I think is a matter of "luck". It will probably also matter what version of gcc is used to compile the code - different compiler versions will use registers in different ways. -- Mats > > > Cheers, > > Sylvain > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xen.org > http://lists.xen.org/xen-devel > >