Document the virtio-iommu device for qemu-system-x86_64. In particular note the lack of interrupt remapping, which may be an important limitation on x86.
Suggested-by: Eric Auger <[email protected]> Signed-off-by: Jean-Philippe Brucker <[email protected]> --- qemu-options.hx | 3 +++ 1 file changed, 3 insertions(+) diff --git a/qemu-options.hx b/qemu-options.hx index 83aa59a920..9a1906a748 100644 --- a/qemu-options.hx +++ b/qemu-options.hx @@ -976,6 +976,9 @@ SRST Please also refer to the wiki page for general scenarios of VT-d emulation in QEMU: https://wiki.qemu.org/Features/VT-d. +``-device virtio-iommu`` + Enable a paravirtual IOMMU, that manages DMA isolation and remapping + for all PCI devices, but does not support interrupt remapping. ERST DEF("name", HAS_ARG, QEMU_OPTION_name, -- 2.33.0
