On Mon, 2015-03-02 at 15:42 +0000, Julien Grall wrote: > When SMMU doesn't support coherent table walk, Xen may need to clean > updated PT (see commit 4c5f4cb "xen/arm: p2m: Clean cache PT when the > IOMMU doesn't support coherent walk"). > > If one SMMU of the platform doesn't support coherent table walk, the > feature is disabled for the whole platform. This is because device is > assigned to a domain after the page table are populated. > > This could impact performance on domain which doesn't use device > passthrough. But, as the spec strongly recommends the support of this > feature for mainstream platform, I expect server will always have SMMUs > supporting coherent table walk. If not, we may need to enable this feature > per-domain. > > Signed-off-by: Julien Grall <julien.gr...@linaro.org>
Acked + applied,thanks. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
