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).

"No space left on device" That means you are out of hard drive space. Free up some space or use another partition.

net/ipv4/syncookies.c:401:1: fatal error: closing dependency file net/ipv4/.syncookies.o.d: No space left on device } ^ compilation terminated. {standard input}: Assembler messages: {standard input}: Fatal error: can't write net/ipv4/.tmp_syncookies.o: No space left on device {standard input}: Fatal error: can't close net/ipv4/.tmp_syncookies.o: No space left on device scripts/Makefile.build:258: recipe for target 'net/ipv4/syncookies.o' failed make[2]: *** [net/ipv4/syncookies.o] Error 1 scripts/Makefile.build:403: recipe for target 'net/ipv4' failed make[1]: *** [net/ipv4] Error 2 Makefile:949: recipe for target 'net' failed make: *** [net] Error 2 Having further errors, I will just add your repo

If you don't want to compile this package yourself, I am providing the package on my repo [1]. [1] https://wiki.archlinux.org/index.php/Unofficial_user_repositories#markzz

Thanks, just needed to uncomment the auto key retrieval

https://wiki.archlinux.org/index.php/Makepkg#Signature_checking

I keep getting ==> Verifying source file signatures with gpg... linux-4.2.tar ... FAILED (unknown public key 79BE3E4300411886) patch-4.2.2 ... FAILED (unknown public key 38DBBDC86092693E) ==> ERROR: One or more PGP signatures could not be verified! ==> ERROR: Makepkg was unable to build linux-vfio. how should I fix it?

Really nice, Dan. Appreciate your effort in packaging that. Currently trying it out. :)

I just put together linux-vfio-lts which is currently just a copy of linux-vfio-4.1.6 with a different name: https://aur.archlinux.org/packages/linux-vfio-lts That will let you install both at once. I'm working on getting that upgraded to 4.1.9 soon, assuming it doesn't break anything for me. I have the hd 7850 for the host and an r9 280x for the vm and those both end up in the same iommu group without the acs patch. I'm pretty sure my 7850 isn't supposed to be supported by the amdgpu driver, so that shouldn't be the problem. Don't think the 280x is supported either.

My motherboard is an ASRock Z87 Extreme6. If I only attach a GTX 980 and a Renesas USB 3.0 card, I do not need to enable the ACS Override patch. But since I attach IBM M1015 card but for the host (not assigning the vfio-pci driver), I have to enable the ACS Override patch. If I recall correctly the IOMMU groups have the same grouping as it used to in 4.1.6. Last night I just downgraded back to 4.1.6 using your link, thanks! Is there any way in Arch AUR to install both version of the same kernel edition (linux-vfio-4.1.6 and linux-vfio-4.2.1) so I can just switch on GRUB menu? Does your HD Radeon issue is because of the new amdgpu driver on 4.2?

I am using OVFM also. My vm gets 6 cores and 8 GB memory, and I also require the acs override for my motherboard (asrock z77 extreme 6). Are you also using acs override? Maybe the patch isn't working properly anymore. But I also had other problems with this 4.2.1 kernel. I have a hd 7850 for my host gpu with a triple monitor setup. A big 1440p in the middle and two rotated 1080p on either side. As soon as I would log into gnome, the main 1440p screen would just shut off.