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vm-virtio: Allow 2MiB mappings

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In order to speed up the boot time and reduce the amount of mappings,
this patch exposes the virtio-iommu device as supporting both 2M and 4k
page sizes.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2019-10-17 12:55:23 -07:00 committed by Samuel Ortiz
parent 2b60452195
commit efbafdf9ed
1 changed files with 2 additions and 2 deletions
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4
vm-virtio/src/iommu.rs
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@ -53,9 +53,9 @@ const VIRTIO_IOMMU_F_BYPASS: u32 = 3;
#[allow(unused)]
const VIRTIO_IOMMU_F_PROBE: u32 = 4;
// Default to 4KiB page size.
// Support 2MiB and 4KiB page sizes.
#[allow(unused)]
const VIRTIO_IOMMU_PAGE_SIZE_MASK: u64 = 4 << 10;
const VIRTIO_IOMMU_PAGE_SIZE_MASK: u64 = (2 << 20) | (4 << 10);
#[allow(unused)]
#[derive(Copy, Clone, Debug, Default)]