On 2/13/24 19:28, Eric Auger wrote:
We are missing an entry for the virtio-iommu-pci device. Add the
information on which machine it is currently supported and document
the new aw-bits option.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
---
qemu-options.hx | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/qemu-options.hx b/qemu-options.hx
index 8547254dbf..6a8c970640 100644
--- a/qemu-options.hx
+++ b/qemu-options.hx
@@ -1172,6 +1172,14 @@ 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-pci[,option=...]``
+ This is only supported by ``-machine q35`` and ``-machine virt``.
+ It supports below options:
+
+ ``aw-bits=val`` (val between 32 and 64, default depends on machine)
+ This decides the address width of IOVA address space. With
+ q35 it defaults to 39 bits. On arm virt it defaults to 48 bits.
Minor improvement :
"It defaults to 39 bits on q35 machines and 48 bits on ARM virt machines."
Anyhow,
Reviewed-by: Cédric Le Goater <c...@redhat.com>
Thanks,
C.
