...@nongnu.org; k...@vger.kernel.org; linux-ker...@vger.kernel.org
Subject: [PATCH 2/2] vfio: hugepage support for vfio_iommu_type1
We currently send all mappings to the iommu in PAGE_SIZE chunks, which
prevents the iommu from enabling support for larger page sizes.
We still need to pin pages
+ * Turns out AMD IOMMU has a page table bug where it won't map large pages
+ * to a region that previously mapped smaller pages. This should be fixed
+ * soon, so this is just a temporary workaround to break mappings down into
+ * PAGE_SIZE. Better to map smaller pages than nothing.
+ */
We currently send all mappings to the iommu in PAGE_SIZE chunks,
which prevents the iommu from enabling support for larger page sizes.
We still need to pin pages, which means we step through them in
PAGE_SIZE chunks, but we can batch up contiguous physical memory
chunks to allow the iommu the
