From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anish Patel Subject: Re: [PATCH] Check AMD SYSCFG DramModEn bit for MTRR configuration Date: Wed, 02 Mar 2011 10:20:15 -0500 Message-ID: <4D6E602F.6010309@gmail.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Keir Fraser Cc: Wei Huang , "'xen-devel@lists.xensource.com'" List-Id: xen-devel@lists.xenproject.org Buggy BIOSes are more common than you think. especially from small shops, and some times they don't tend to release BIOS updates for their platforms. On 03/02/11 02:01, Keir Fraser wrote: > On 01/03/2011 21:11, "Wei Huang" wrote: > >> This patch checks whether SYSCFG DramModEn bit is clear by BIOS. Some >> buggy BIOS might set this bit to 1, which causes unexpected behavior on >> AMD platforms. This patch also increase family check for AMD CPUs when >> setting fixed MTRR ranges. > How common are these buggy BIOSes? Can't we just get users to update their > BIOS? > > -- Keir > >> Signed-off-by: Wei Huang >> >> >> PS: If OK, please apply it to both xen-4.1 and xen-4.0 trees. >> >> _______________________________________________ >> Xen-devel mailing list >> Xen-devel@lists.xensource.com >> http://lists.xensource.com/xen-devel > > > _______________________________________________ > Xen-devel mailing list > Xen-devel@lists.xensource.com > http://lists.xensource.com/xen-devel >