Re: [Xen-devel] xen EFI boot and vga-passthrough

[Kristian Hagsted Rasmussen <kristian@xxxxxxxxxx>]

> -----Original Message-----
> From: Ricardo Jesus [mailto:ricardo.meb.jesus@xxxxxxxxx]

> Update DQ77MK's BIOS. BIOS 00050 fixed a bug with UEFI and Linux.
I am convinced that for the DQ77kb, a bios for DQ77MK does not work, but the 
same bug has been fixed in the 0044 bios version for that board.

 
> The current BIOS release is 00053 and you can find the release notes at
> http://downloadmirror.intel.com/22094/eng/MK_0053_ReleaseNotes.pdf
> 
> On Mon, Nov 12, 2012 at 7:18 PM, Kristian Hagsted Rasmussen
> <kristian@xxxxxxxxxx> wrote:
> > Hi all
> >
> > I can't seem to find any information on vga-passthrough when booting
> through xen.efi, so I assume it should work. But I encounter a problem on a
> windows 7 HVM that boots fine when dom0 is booted through MBR but fails
> when dom0 is booted through UEFI.
> >
> > My system is:
> > DQ77KB motherboard with bios version 44 Core i7-3779T with VT-d Intel
> > HD graphics 4000
> >
> > In the qemu log it seem like xen cannot reach the vga-bios. Is this a known
> problem when booting through xen.efi or is it a bug?
> >
> > dm-command: hot insert pass-through pci dev
> > register_real_device: Assigning real physical device 00:02.0 ...
> > register_real_device: Disable MSI translation via per device option
> > register_real_device: Disable power management
> > pt_iomul_init: Error: pt_iomul_init can't open file
> > /dev/xen/pci_iomul: No such file or directory: 0x0:0x2.0x0
> > pt_register_regions: IO region registered (size=0x00400000
> > base_addr=0xf7000004)
> > pt_register_regions: IO region registered (size=0x10000000
> > base_addr=0xe000000c)
> > pt_register_regions: IO region registered (size=0x00000040
> > base_addr=0x0000f001)
> > setup_vga_pt: vga bios size (0x0) is invalid!
> > register_real_device: Setup VGA BIOS of passthroughed gfx failed!
> >
> > Log file is attached.
> >
> > Just compared a log file from efi boot to one from MBR boot and found this
> discrepancy between the two:
> > pt_register_regions: IO region registered (size=0x00400000
> base_addr=0xdfc00004) - MBR boot see last addr       0xdfc00004
> > pt_register_regions: IO region registered (size=0x00400000
> base_addr=0xf7000004) - EFI boot compare to MBR      0xf7000004
> >
> > Kind regards Kristian Hagsted Rasmussen
> >
> >
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxx
> > http://lists.xen.org/xen-devel
> >

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel