Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-10-15 Thread globalgorrilla
Hi Alex, The first time QEMU is run the display attached via DP comes out of standby and then goes into power saving. This is used to capture the SeaBIOS debug outputs: No 00:02.0 (boots to grub from CD-ROM ISO): https://pastebin.com/y0xtURW5 With 00:02.0 (hangs):

Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-07-27 Thread Alex Williamson
On Wed, 27 Jul 2016 18:42:29 -0700 globalgorri...@fastmail.fm wrote: > On Wed, Jul 27, 2016, at 06:04 PM, Alex Williamson wrote: > > > Hmm, the kernel not exposing the VGA regions is really the only way we > > can fail here and the only two ways that the kernel won't expose VGA, > > given that en

Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-07-27 Thread globalgorrilla
On Wed, Jul 27, 2016, at 06:04 PM, Alex Williamson wrote: > Hmm, the kernel not exposing the VGA regions is really the only way we > can fail here and the only two ways that the kernel won't expose VGA, > given that enabled in the config, is if the device isn't VGA (which we > can see by your clas

Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-07-27 Thread Alex Williamson
On Wed, 27 Jul 2016 17:30:37 -0700 globalgorri...@fastmail.fm wrote: > > > qemu.log: > > > qemu-system-x86_64: -device > > > vfio-pci,host=00:02.0,id=hostdev0,bus=pci.0,addr=0x2: IGD device > > > :00:02.0 failed to enable VGA access, legacy mode disabled > > > > Is you kernel built with CONF

Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-07-27 Thread globalgorrilla
First, thank you for your blog posts and your work on vfio and in this area. On Wed, Jul 27, 2016, at 05:20 PM, Alex Williamson wrote: > On Wed, 27 Jul 2016 17:01:21 -0700 > globalgorri...@fastmail.fm wrote: > > > Hello, > > > > Do you reckon this is what some bugzilla's find to be a motherboa

Re: [vfio-users] BIOS memory mapping or chipset issue with MMIO prevents IGD pass-through in legacy mode?

2016-07-27 Thread Alex Williamson
On Wed, 27 Jul 2016 17:01:21 -0700 globalgorri...@fastmail.fm wrote: > Hello, > > Do you reckon this is what some bugzilla's find to be a motherboard > memory mapping issue or a chipset issue? > > Any ideas on working around it besides opting the IGD out of MMIO? > > Doing that prevents it fr