Hi Alex, Alex Williamson <alex.williamson@xxxxxxxxxx> wrote: > On Sun, 2013-05-19 at 23:26 +0400, Maik Broemme wrote: > > Hi Knut, > > > > Knut Omang <knuto@xxxxxxxxxx> wrote: > > > > > > On Mon, 2013-05-13 at 16:23 -0600, Alex Williamson wrote: > > > > On Mon, 2013-05-13 at 22:55 +0200, Knut Omang wrote: > > > > > Hi all, > > > > > > > > > > Perfect timing from my perspective, thanks Alex! > > > > > > > > > > I spent the better part of the weekend testing your branches on a new system > > > > > I just put together for this purpose, results below.. > > > > > > > > > > On Fri, 2013-05-03 at 16:56 -0600, Alex Williamson wrote: > > > > > ... > > > > > > git://github.com/awilliam/linux-vfio.git vfio-vga-reset > > > > > > git://github.com/awilliam/qemu-vfio.git vfio-vga-reset > > > > > > > > > > System setup: > > > > > > > > > > - Fedora 18 on > > > > > - Gigabyte Z77X-UD5H motherboard > > > > > - Intel Core i7 3770 (Ivy bridge w/integrated graphics) > > > > > - 2 discrete graphics cards: > > > > > > > > > > lspci | egrep 'VGA|Audio' > > > > > 00:02.0 VGA compatible controller: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller (rev 09) > > > > > 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) > > > > > 01:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Caicos [Radeon HD 6450] > > > > > 01:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Caicos HDMI Audio [Radeon HD 6400 Series] > > > > > 02:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cape Verde PRO [Radeon HD 7700 Series] > > > > > 02:00.1 Audio device: Advanced Micro Devices [AMD] nee ATI Cape Verde/Pitcairn HDMI Audio [Radeon HD 7700/7800 Series] > > > > > > > > > > Short summary: > > > > > > > > > > - Once I got past a few time consuming obstacles explained below > > > > > - the graphics part of the graphics/hdmi audio passthrough seems to work perfect > > > > > on both discrete graphics cards > > > > > (though so far only one at at time and with some minor issues, see below) > > > > > - no success with the hdmi audio yet (ideas for further investigation appreciated!) > > > > > > > > I've had hdmi audio working with an HD7850, but only in Windows (7) and > > > > it was using legacy interrupts for some reason instead of MSI. I wonder > > > > if Liux guests might work with snd_hda_intel.enable_msi=0. I'm not sure > > > > what's wrong with MSI, but it seems to be new with the PCI bus reset > > > > support. > > > > > > In my first tries, Windows were just using a generic > > > VGA driver, which still seems to work perfect with reboots and everything > > > and in full screen resolution (1920x1200). > > > However after installing the Catalyst AMD driver stack, upon boot > > > Windows 7 now consequently get a BSOD from the graphics driver > > > with the message: > > > > > > "Attempt to reset the display driver and recover from timeout failed" > > > - a picture of the BSOD screen attached. > > > > > > I attach the corresponding vfio log where I added some timing code to > > > make it easier to see when the BSOD happens (with 2 seconds of silence > > > in the log before the VM reboots, I believe this is at 09:28:32-34 in > > > the log. > > > > > > Similar behaviour both just after reboot/power cycle of the host and > > > subsequent VM boot attempts. > > > > > > This is still with the HD7700 as passed through device, but after a > > > motherboard firmware upgrade (to F14) which did not seem to affect the > > > observed behaviour on Windows prior to Catalyst install or with Linux > > > guest, neither did it fix the bug in selecting primary devices as I > > > was hoping for. > > > > > > Let me know if you have ideas for further debugging this, > > > > > > > I had a similar problem a couple of days ago and posted it in this list. > > I got similar BSOD and tested already the following configurations: > > > > 1) machine: q35 / kvm: yes / vga: none / x-vga: on = qemu freeze > > 2) machine: q35 / kvm: no / vga: none / x-vga: on = qemu freeze > > (with errors below) > > 3) machine: q35 / kvm: yes / vga: none / x-vga: off = qemu runs with > > 100% CPU due to no VGA init (no picture) > > 4) machine: q35 / kvm: yes / vga: cirrus / x-vga: off = qemu runs with > > BOSD on loading atikmpag.sys > > 5) machine: pc / kvm: yes / vga: cirrus / x-vga: off = qemu runs fine > > > > However I've re-run the BSOD case already with the following branches > > from Alex: > > > > git://github.com/awilliam/linux-vfio.git vfio-vga-reset > > git://github.com/awilliam/qemu-vfio.git vfio-vga-reset > > > > Also with latest seabios and it worked so far. No more BSOD and reboot > > of VM was also possible without suspend / resume the host between. > > Good to hear. It looks like you have the same motherboard as my AMD > test system. An HD7850 in that system runs quite reliably with the > branches above although I do occasionally get VGA palette corruption. > Good to know. I'm using a Radeon HD7870 which works fine now. I have the same VGA palette corruption occasionally but only until Catalyst driver is loaded. So it happens sometimes during VGA init if Windows 7 boot logo is shown with very strange colors and went away if Catalyst driver is loaded. > Are you still require -vga cirrus or do the -vga none, x-vga=on cases > work now too? Thanks, > No longer required, -vga none with x-vga=on work on your branches fine now. Not sure if there was something more changed because with original Fedora 3.9.2 kernel it still doesn't work. > Alex > --Maik -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
