From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tim Deegan Subject: Re: bug, bad page free with hvm guest after commits about AMD IOMMU Date: Thu, 5 May 2011 17:42:55 +0100 Message-ID: <20110505164255.GD24068@whitby.uk.xensource.com> References: <20110505134022.GB24068@whitby.uk.xensource.com> <20110505144436.GC24068@whitby.uk.xensource.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Return-path: Content-Disposition: inline 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: Anthony Perard Cc: Wei Wang , Xen Devel List-Id: xen-devel@lists.xenproject.org At 16:31 +0100 on 05 May (1304613096), Anthony Perard wrote: > On Thu, 5 May 2011, Tim Deegan wrote: >=20 > > CC'ing John and George, who reported similar-sounding failures. > > > > At 14:56 +0100 on 05 May (1304607375), Anthony Perard wrote: > > > On Thu, May 5, 2011 at 14:40, Tim Deegan wr= ote: > > > > At 14:31 +0100 on 05 May (1304605909), Anthony PERARD wrote: > > > >> Hi, > > > >> > > > >> With the last xen-unstable, when I try to run a HVM guest, the v= gabios > > > >> did not display anything on the screen (it is only white), and X= en > > > >> print this: > > > > > > > > Interesting. =A0I get those messages but the BIOS continues OK so= I hadn't > > > > been in a hurry to investigate. =A0I'll take a look. > > > > > > Yes, the guest works fine after that, but on linux, there is no vga > > > console, but a X server work fine. > > > > I suspect it's the use of type 0 to mean RAM: it means that an entry = of > > all zeroes no longer gives type mmio so something's not going to qemu > > correctly. > > > > Does the attached patch fix it for you? I'm still seeing intermitten= t > > failures with it but they may be unrelated. >=20 > Yep, the patch fix this issue. Great, thanks for the triage and testing. I've applied it.=20 Tim. --=20 Tim Deegan Principal Software Engineer, Xen Platform Team Citrix Systems UK Ltd. (Company #02937203, SL9 0BG)