| commit | 8646d9c773d88c3f9a20919a96afa35e6230c1ee | |
| author | David Woodhouse <dwmw@amazon.co.uk> | |
| Mon, 14 Mar 2022 14:25:42 +0000 (14 14:25 +0000) | ||
| committer | Michael S. Tsirkin <mst@redhat.com> | |
| Mon, 16 May 2022 08:38:39 +0000 (16 04:38 -0400) | ||
| tree | 7e9883f6dc99ebfe2cccd9cde44778dd16954c65 | treesnapshot (tar.gz zip) |
| parent | dc89f32d92bba795b0665f075b78d8881cf67ab3 | commitdiff |
intel_iommu: Support IR-only mode without DMA translation
By setting none of the SAGAW bits we can indicate to a guest that DMA
translation isn't supported. Tested by booting Windows 10, as well as
Linux guests with the fix at https://git.kernel.org/torvalds/c/c40aaaac10
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220314142544.150555-2-dwmw2@infradead.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
By setting none of the SAGAW bits we can indicate to a guest that DMA
translation isn't supported. Tested by booting Windows 10, as well as
Linux guests with the fix at https://git.kernel.org/torvalds/c/c40aaaac10
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Peter Xu <peterx@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20220314142544.150555-2-dwmw2@infradead.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
| hw/i386/intel_iommu.c | diffblobblamehistory | |
| include/hw/i386/intel_iommu.h | diffblobblamehistory |