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[PULL,59/68] qemu-options.hx: Document the virtio-iommu-pci granule option

Message ID 695012903f99d42c03a5bc87fe24f591b6bf7153.1710282274.git.mst@redhat.com
State New
Headers show
Series [PULL,01/68] vdpa: add back vhost_vdpa_net_first_nc_vdpa | expand

Commit Message

Michael S. Tsirkin March 12, 2024, 10:28 p.m. UTC 
From: Eric Auger <eric.auger@redhat.com>

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>
---
 qemu-options.hx | 8 ++++++++
 1 file changed, 8 insertions(+)
diff mbox series

Patch

diff --git a/qemu-options.hx b/qemu-options.hx
index 937fd7ed84..c6f3d2e76d 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`` (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,