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authorEric Auger <eric.auger@redhat.com>2020-07-03 16:59:42 +0100
committerPeter Maydell <peter.maydell@linaro.org>2020-07-03 16:59:42 +0100
commit1733eebb9e75b77120b462814f8f9b03ae918a7a (patch)
tree50bf38a34874938c8841f9ecdd1b28bb139e21c2 /hw/arm/virt.c
parentf78069253ccf25c64e19e9889b98e499336f6c6e (diff)
downloadfocaccia-qemu-1733eebb9e75b77120b462814f8f9b03ae918a7a.tar.gz
focaccia-qemu-1733eebb9e75b77120b462814f8f9b03ae918a7a.zip
virtio-iommu: Implement RESV_MEM probe request
This patch implements the PROBE request. At the moment,
only THE RESV_MEM property is handled. The first goal is
to report iommu wide reserved regions such as the MSI regions
set by the machine code. On x86 this will be the IOAPIC MSI
region, [0xFEE00000 - 0xFEEFFFFF], on ARM this may be the ITS
doorbell.

In the future we may introduce per device reserved regions.
This will be useful when protecting host assigned devices
which may expose their own reserved regions

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-id: 20200629070404.10969-3-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/arm/virt.c')
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