From mboxrd@z Thu Jan 1 00:00:00 1970 From: listmail Subject: Re: vt-d p7p55d evo Date: Sun, 04 Apr 2010 02:14:50 -0400 Message-ID: <4BB82E5A.4030400@triad.rr.com> References: <4BB6B79D.3070305@triad.rr.com> 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: Mark Hurenkamp Cc: xen-devel@lists.xensource.com List-Id: xen-devel@lists.xenproject.org Mark Hurenkamp wrote: > Hi, > > >> I'm not a subscriber to xen-devel yet, but did see your post about >> the evo and iommu not working. Within the last week I have >> installed a xen 4.0rc8 and xen/stable clone kernel 2.6.32.10 and boot >> ok with iommu=1 and have also successfully passed through a tv tuner >> card tonight which modules did load for. I did have one weird quirk >> though. I haven't tested the card in the domu yet. Anyway if you >> want to discuss this further then reply back. > > Are you sure you are using VT-d here (are you using hvm loader)? I'd > be very interested to know what Bios version you are using, what your > 'xm dmesg' and 'xm info' output is (after boot), and the xen > configuration file for your VM. > Cause although my system can boot fine with enabled iommu now, it is > simply switched off by xen at boottime... Did you do something special > to force it to on? Do you have any patches installed? > Btw, passthrough of a tuner device to a pvm domU is not a problem > here, but that does not require VT-d (nor VT-x). > Did you manage to passthrough a device to Windows? > My ultimate goal is to passthrough a (secondary) usb card, and a > (secondary) graphics card, to a Windows hvm. > > > Mark. > I'm still pretty new to Xen so it could very well be that I've misunderstood the requirements for certain capabilities. I thought one of the wiki's had stated that to pass through to an hvm guest you have to have VT-d though. Is there something specific that I which can indicate its status after boot? bios: 1207 cpu: i7 860 grub2: http://pastebin.ca/1856369 xm dmesg: http://pastebin.ca/1856370 xm info: http://pastebin.ca/1856372 hvm cfg: http://pastebin.ca/1856376 I think I compiled the linux kernel at xen/stable git commit 221c4dbf86 given the timestamp in xm info (all done same time frame)