Your message dated Thu, 12 Feb 2015 17:23:02 +0000
with message-id <1423761782.23608.2.ca...@decadent.org.uk>
and subject line Re: Bug#750959: linux-image-3.15-rc8-amd64: Add support for
VGA VFIO (CONFIG_VFIO_PCI_VGA)
has caused the Debian Bug report #750959,
regarding linux-image-3.15-rc8-amd64: Add support for VGA VFIO
(CONFIG_VFIO_PCI_VGA)
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
(NB: If you are a system administrator and have no idea what this
message is talking about, this may indicate a serious mail system
misconfiguration somewhere. Please contact ow...@bugs.debian.org
immediately.)
--
750959: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=750959
Debian Bug Tracking System
Contact ow...@bugs.debian.org with problems
--- Begin Message ---
Source: linux-image-3.15-rc8-amd64
Severity: wishlist
Dear Maintainer,
In the past few years with the increased availability of IOMMU/Vt-d supporting
hardware, there has been an increase in the popularity of experimenting with
VGA passtrough to virtual machines via IOMMU. Currently the most bleeding edge
way of doing this is with the combination of kvm, qemu and vfio. However,
most graphics cards don't play nice with just the plain vfio and need special
considerations that need to be enabled in the kernel.
I propose that we enable these special features called "CONFIG_VFIO_PCI_VGA"
in the kernel so that people can more easily experiment with these new cool
features. I asked the leading developer of VFIO VGA support (Alex Williamson)
if he could think of any reason why not to enable this feature by default, and
he could not think of any. The option should simply add the capability to use
the x-vga feature in Qemu.
Here some basic information about VFIO:
https://www.kernel.org/doc/Documentation/vfio.txt
Interesting presentations about VGA Passtroughs with VFIO:
http://www.linux-kvm.org/wiki/images/b/b4/2012-forum-VFIO.pdf
http://www.linux-kvm.org/wiki/images/e/ed/Kvm-forum-2013-VFIO-VGA.pdf
There is also quite a bit of "mainstream" interest about this stuff:
https://bbs.archlinux.org/viewtopic.php?id=162768
Thank you.
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Kernel: Linux 3.15.0-rc7 (SMP w/8 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
--- End Message ---
--- Begin Message ---
Version: 3.16-1~exp1
On Thu, 2015-02-12 at 16:00 +0200, fld wrote:
> The requested feature is now present in the latest Debian SID kernel
> (3.16.7-ckt4-3):
>
> % grep "VFIO" /boot/config-3.16.0-4-amd64
> CONFIG_VFIO_IOMMU_TYPE1=m
> CONFIG_VFIO=m
> CONFIG_VFIO_PCI=m
> CONFIG_VFIO_PCI_VGA=y
> CONFIG_KVM_VFIO=y
>
> This bug report can thus be closed.
Thanks for pointing this out.
Ben.
--
Ben Hutchings
When in doubt, use brute force. - Ken Thompson
signature.asc
Description: This is a digitally signed message part
--- End Message ---
