From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeremy Fitzhardinge Subject: Re: Re: ATI radeon fails with "iommu=soft swiotlb=force" (seen on RV730/RV740 and RS780/RS800) Date: Fri, 02 Oct 2009 10:18:05 -0700 Message-ID: <4AC635CD.5010409@goop.org> References: <919997.14771.qm@web56105.mail.re3.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <919997.14771.qm@web56105.mail.re3.yahoo.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: Boris Derzhavets Cc: dri-devel@lists.sourceforge.net, xen-devel@lists.xensource.com, JBeulich@novell.com, Konrad Rzeszutek Wilk List-Id: xen-devel@lists.xenproject.org On 10/01/09 23:58, Boris Derzhavets wrote: > Dmesg report attached:- > > [ 18.088588] mtrr: type mismatch for d0000000,10000000 old: > write-back new: write-combining > [ 18.088653] mtrr: type mismatch for d0000000,10000000 old: > write-back new: write-combining > [ 18.338143] mtrr: type mismatch for d0000000,10000000 old: > write-back new: write-combining > [ 18.338214] mtrr: type mismatch for d0000000,10000000 old: > write-back new: write-combining > [ 18.338270] mtrr: type mismatch for d0000000,10000000 old: > write-back new: write-combining > [ 18.378688] ------------[ cut here ]------------ > [ 18.378696] kernel BUG at mm/slab.c:521! > OK, I have a fix for this. I'll commit it shortly. J