[libvirt] [PATCH 4/4] virt-host-validate: check for intel_iommu=on cmdline flag

Daniel P. Berrange berrange at redhat.com
Mon Oct 12 09:44:47 UTC 2015

On Thu, Oct 08, 2015 at 03:09:02PM -0400, Laine Stump wrote:
> On 10/07/2015 12:50 PM, Daniel P. Berrange wrote:
> >This looks for existance of /sys/firmware/acpi/tables/DMAR
> >as a reasonable hint that the BIOS support an Intel IOMMU.
> >
> >This file is only present if enabled in the BIOS, so the
> >check only does something if the BIOS is enabled but the
> >kernel has it disabled.
> >
> >TBD figure out a check for AMD too, which doesn't involve
> >grepping dmesg which might have already been purged.
> I have a couple AMD machines, if you want anything tested.

I'll knock something up for AMD per Alex's recommendation and
then post another patch for that.

> ACK with what's here though.

|: http://berrange.com      -o-    http://www.flickr.com/photos/dberrange/ :|
|: http://libvirt.org              -o-             http://virt-manager.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: http://entangle-photo.org       -o-       http://live.gnome.org/gtk-vnc :|

More information about the libvir-list mailing list