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qemu-options.hx: Document the virtio-iommu-pci granule option

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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 granule option.

Signed-off-by: Eric Auger <eric.auger@redhat.com>

Message-Id: <20240307134445.92296-5-eric.auger@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
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Eric Auger 2024-03-07 14:43:05 +01:00 committed by Michael S. Tsirkin
parent 9dd5e808fc
commit 695012903f
1 changed files with 8 additions and 0 deletions
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8
qemu-options.hx
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@ -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`` (x86_64) and ``-machine virt`` (ARM).
It supports below options:
``granule=val`` (possible values are 4k, 8k, 16k, 64k and host; default: host)
This decides the default granule to be be exposed by the
virtio-iommu. If host, the granule matches the host page size.
ERST
DEF("name", HAS_ARG, QEMU_OPTION_name,