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qdev: Add a granule_mode property

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Introduce a new enum type property allowing to set an
IOMMU granule. Values are 4k, 8k, 16k, 64k and host.
This latter indicates the vIOMMU granule will match
the host page size.

A subsequent patch will add such a property to the
virtio-iommu device.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240227165730.14099-2-eric.auger@redhat.com>
This commit is contained in:
Eric Auger 2024-02-27 17:55:48 +01:00 • committed by Philippe Mathieu-Daudé
parent 0fad90955e
commit 965bc08310
3 changed files with 35 additions and 0 deletions
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18
qapi/virtio.json
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@ -957,3 +957,21 @@
{ 'struct': 'DummyVirtioForceArrays',
'data': { 'unused-iothread-vq-mapping': ['IOThreadVirtQueueMapping'] } }
##
# @GranuleMode:
#
# @4k: granule page size of 4KiB
#
# @8k: granule page size of 8KiB
#
# @16k: granule page size of 16KiB
#
# @64k: granule page size of 64KiB
#
# @host: granule matches the host page size
#
# Since: 9.0
##
{ 'enum': 'GranuleMode',
'data': [ '4k', '8k', '16k', '64k', 'host' ] }