Arch Linux User Repository

• Leaving eclairvoyant's comment pinned because it contains some useful information.
• Patch policy is different, but similar.
  • Primary purpose of this package are the ACS override and i915 VGA arbiter patches.
  • Upstream Arch patches will be applied to maintain parity with the standard kernel.
  • No other patches will be added.
• Package does have options that can be changed, like building with clang or disabling Arch patches.
  • Defaults will match Arch packages, except when incompatible with this package's primary patches.
  • Options are subject to change. Read PKGBUILD for details.
• Avoid commenting and flagging at the same time for the same issue.
  • Flag for common issues with standard solutions, like new releases, key changes, etc.
  • Comment for issues requiring explanation or debugging.
    • Use a pastebin for blocks of text more than a few lines.

This package exists for the specific purpose of adding ported patches based on those originally created by Alex Williamson for:

• Bypassing the default IOMMU grouping by overriding PCIe ACS support, and

• Enabling VGA arbitration support on Intel iGPUs.

Arbitrary patches will not be added.

Refer to the wiki on PCI passthrough and this blog post on IOMMU groups for risks/caveats before using this package.

Regular AUR etiquette applies as well (knowledge of makepkg and searching the wiki/Arch forums is expected, and AUR helpers or Arch-based distros that are not Arch Linux are unsupported).

I do know for a fact that this package builds. If you cannot build this (it may be because you're using something like yaourt and you have not enough ram), you can use my repository and install it from there. A direct link to the information for the repository [1] (so you can add to your pacman.conf if you wish) and a direct link to the package [2] and its signature (key ID 3CADDFDD) below [3] (for x86_64 only). [1] https://wiki.archlinux.org/index.php/Unofficial_user_repositories#markzz [2] http://repo.markzz.com/arch/markzz/x86_64/linux-vfio-4.2.5-1-x86_64.pkg.tar.xz [3] http://repo.markzz.com/arch/markzz/x86_64/linux-vfio-4.2.5-1-x86_64.pkg.tar.xz.sig

Thats odd, installing from your repo worked fine, but I get ' A failure occurred in prepare()' when building it manually.

It builds fine for me.

Needs maintenance, 'Failed to prepare()'.

Working perfectly Thanks zman0900

Thanks for the info. I actually signed up to that mailing list a month or so ago and immediately forgot about it. Guess it's time for some reading.

It was mentioned on the vfio-users mailing list [1] that 4.3 and a fix in OVMF may solve some issue. If I were you, I would start seriously looking for a solution when kernel 4.3 is released. As for now, I will look for a solution in my spare time. [1] https://www.redhat.com/archives/vfio-users/2015-October/msg00145.html

Looks like my issue with screen shutting off when I log into gnome is related to one of the patches on this kernel. I have realized that the same version (4.2.3) of the main arch kernel allows all my screens to turn on. Considering gpu pass through is also broken for me with 4.2+ of this kernel, I'm assuming all the problems are caused by the ACS patch. I think I'll try to figure out the issue this weekend, but I'm a Java programmer so it probably won't go well. If anyone has any advice on where to start or already knows the problem, please let me know.

It could also be that you are using something like yaourt and you do not have enough RAM to compile it fully in /tmp. See the wiki [1] for details. [1] https://wiki.archlinux.org/index.php/Yaourt#Build_directory