[v8] VIRTIO-IOMMU: Introduce aw-bits and granule options

[PATCH v8 4/9] qemu-options.hx: Document the virtio-iommu-pci granule option

Eric Auger posted 9 patches 1 year, 11 months ago

Diff against v6 v7
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Maintainers: Peter Maydell <peter.maydell@linaro.org>, Eduardo Habkost <eduardo@habkost.net>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, "Philippe Mathieu-Daudé" <philmd@linaro.org>, Yanan Wang <wangyanan55@huawei.com>, Paolo Bonzini <pbonzini@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, "Michael S. Tsirkin" <mst@redhat.com>, Eric Auger <eric.auger@redhat.com>, Eric Blake <eblake@redhat.com>, Markus Armbruster <armbru@redhat.com>, Thomas Huth <thuth@redhat.com>, Laurent Vivier <lvivier@redhat.com>

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[PATCH v8 4/9] qemu-options.hx: Document the virtio-iommu-pci granule option

Posted by Eric Auger 1 year, 11 months ago

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>

---

v7 -> v8
- precise x86_64 and ARM
---
 qemu-options.hx | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/qemu-options.hx b/qemu-options.hx
index 9a47385c15..379792a215 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,
-- 
2.41.0

Re: [PATCH v8 4/9] qemu-options.hx: Document the virtio-iommu-pci granule option

Posted by Philippe Mathieu-Daudé 1 year, 11 months ago

On 7/3/24 14:43, 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 granule option.
> 
> Signed-off-by: Eric Auger <eric.auger@redhat.com>
> 
> ---
> 
> v7 -> v8
> - precise x86_64 and ARM
> ---
>   qemu-options.hx | 8 ++++++++
>   1 file changed, 8 insertions(+)

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>