Colin Percival 9af32ef564 vtblk: Bypass iommu on powerpc ... Virtio operates with physical addresses, while busdma is designed to map these to produce bus addresses. On most supported platforms, these two are interchangeable; on powerpc platforms, they are not. When on powerpc, set an IOMMU of NULL, which causes the powerpc busdma code to bypass the iommu mapping; this leaves us with the physical buffer addresses which the virtio host expects to see. Tested by: alfredo Fixes: 782105f7c8 ("vtblk: Use busdma") Sponsored by: https://www.patreon.com/cperciva Differential Revision: https://reviews.freebsd.org/D37891		2023-01-10 19:42:04 -08:00
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virtio_blk.c	vtblk: Bypass iommu on powerpc	2023-01-10 19:42:04 -08:00
virtio_blk.h	virtio_blk: Add modern (V1) support	2021-01-19 04:55:24 +00:00