From: Alex Williamson <alex.williamson@redhat.com>
Date: Wed, 26 Feb 2014 18:38:40 +0000 (-0700)
Subject: kvm/vfio: Support for DMA coherent IOMMUs
X-Git-Tag: v3.15-rc1~107^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d830d47c7a756da6f0b55fa25d51eec0739eb02;p=pandora-kernel.git

kvm/vfio: Support for DMA coherent IOMMUs

VFIO now has support for using the IOMMU_CACHE flag and a mechanism
for an external user to test the current operating mode of the IOMMU.
Add support for this to the kvm-vfio pseudo device so that we only
register noncoherent DMA when necessary.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Cc: Gleb Natapov <gleb@kernel.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
---

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