From mboxrd@z Thu Jan 1 00:00:00 1970 From: Keir Fraser Subject: Re: c/s 19576 vs. AMD systems Date: Wed, 29 Apr 2009 11:49:54 +0100 Message-ID: References: <49F847A2.76EA.0078.0@novell.com> Mime-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <49F847A2.76EA.0078.0@novell.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: Jan Beulich Cc: "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org On 29/04/2009 11:27, "Jan Beulich" wrote: >> What do you suggest? Make the clip Intel-specific? We've only seen problems >> with (a very few) Intel boxes, so handling AMD at all may be quite >> unnecessary. > > No - if BIOSes are broken, they can as well be an AMD systems. I'd rather > take TOM2 and the mentioned SYS_CFG bit into account in that code (not > the least because modern Linux also does so in its MTRR handling code). I will consider fixes for theoretical BIOS problems in 3.5. I'm only putting the test at all in 3.3/3.4 because we have actually seen problems on Intel systems, and I will restrict the test to that scope. -- Keir