Update the documentation to match current QEMU. Remove the mention of pre-2.7 machine models as those aren't provided anymore.
Signed-off-by: Mohamed Mediouni <[email protected]> Reviewed-by: Peter Maydell <[email protected]> --- docs/system/arm/virt.rst | 24 +++++++++++++++++++----- 1 file changed, 19 insertions(+), 5 deletions(-) diff --git a/docs/system/arm/virt.rst b/docs/system/arm/virt.rst index e5570773ba..f8148b5dcf 100644 --- a/docs/system/arm/virt.rst +++ b/docs/system/arm/virt.rst @@ -41,9 +41,10 @@ The virt board supports: - User-creatable SMMUv3 devices (see below for example) - hotpluggable DIMMs - hotpluggable NVDIMMs -- An MSI controller (GICv2M or ITS). GICv2M is selected by default along - with GICv2. ITS is selected by default with GICv3 (>= virt-2.7). Note - that ITS is not modeled in TCG mode. +- An MSI controller (GICv2m or ITS). + - When using GICv3, ITS is selected by default when available on the platform. + - If using GICv2, a GICv2m is provided by default instead. + - When ITS is not available on a GICv3 platform, a GICv2m is provided by default. - 32 virtio-mmio transport devices - running guests using the KVM accelerator on aarch64 hardware - large amounts of RAM (at least 255GB, and more if using highmem) @@ -167,9 +168,22 @@ gic-version with TCG this is currently ``3`` if ``virtualization`` is ``off`` and ``4`` if ``virtualization`` is ``on``, but this may change in future) +msi + Specify the MSI and MSI-X controller (GIC) to provide. + Valid values are: + + ``auto`` + Use the best available MSI-X controller option. ITS when supported, GICv2m otherwise. + ``gicv2m`` + GICv2m. Typically used with a GICv2. Also available with a newer GIC. + ``its`` + GICv3 ITS. This is the default option when using a GICv3 or GICv4 with a supported + accelerator. + ``off`` + Disable support for MSI/MSI-X interrupts. + its - Set ``on``/``off`` to enable/disable ITS instantiation. The default is ``on`` - for machine types later than ``virt-2.7``. + Set ``on``/``off`` to control ITS instantiation. This is a deprecated option, use ``msi`` instead. iommu Set the IOMMU type to create for the guest. Valid values are: -- 2.50.1 (Apple Git-155)
