Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-24 Thread Bob Dawes
I agree with AW's general assessment that you need to decide if it's worth your time and risk to hardware in $'s before undertaking any sort of bios mod but if your just using the bios in qemu it should be relatively safe and potentially incredibly easy. The radeon UEFI GOP itself is generic

Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-23 Thread Alex Williamson
I don't know anything about wayland. Part of the problem with PCI addresses is that they can change, device IDs cannot. Depending on how the BIOS enumerates devices, adding or removing a card may change the device address. Kernel options like pci=assign-busses can also change the address of a de

Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-23 Thread Zir Blazer
Great answers, as expected. Some smaller miniquestions/comments followups >> 1) The host using UEFI or legacy BIOS and VGA support is irrelevant. In an >> ideal world, maybe this wouldn't be the case, but Xorg wants exclusive >> access to VGA even though it probably

Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-22 Thread Alex Williamson
On Tue, Mar 22, 2016 at 1:43 AM, Zir Blazer wrote: > > I expect to get AW to reply this time, heh. Seriously, I can't make wall > of texts smaller than this since i always try to explain context and my > thoughs. > Not into the whole brevity thing huh? I found this one challenging to get throug

Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-22 Thread Zir Blazer
> I think I was in a similar situation before. I am using Haswell CPU > with its integrated graphics for host OS booted on UEFI board. I have > VGA arbitration disabled in the kernel. I am using a Radeon 7870 to > passthrough to the guest, and this card did not have UEFI firmware > available. I obt

Re: [vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-22 Thread Muted Bytes
On Mon, Mar 21, 2016 at 9:43 PM, Zir Blazer wrote: > I'm sure I asked this before and was expecting AW tehnical response, but > instead he said "TL;DR" since it was in a ridiculous long mail with a > multitude of other questions. But now I need a response since I plan to do > this next week, so

[vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-22 Thread Zir Blazer
Switched from plain text to enriched text format. I ALWAYS forget when mailing here that the archive does not automatically warp lines if using plain text. I'm sure I asked this before and was expecting AW tehnical response, but instead he said "TL;DR" since

[vfio-users] Some questions regarding VGA Arbitration, BIOS and UEFI Boot

2016-03-22 Thread Zir Blazer
I'm sure I asked this before and was expecting AW tehnical response, but instead he said "TL;DR" since it was in a ridiculous long mail with a multitude of other questions. But now I need a response since I plan to do this next week, so I have to try again. I have readed this numerous times an