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qemu: capablities: detect presence of acpi-root-pci-hotplug for i440fx machines

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The following change in qemu added support for a global boolean flag specific
to i440fx machines that would turn off or on acpi based hotplug for pci root
bus:

3d7e78aa7777f ("Introduce a new flag for i440fx to disable PCI hotplug on the root bus")

The option is passed as "-global PIIX4_PM.acpi-root-pci-hotplug=on" etc in qemu
commandline. It is enabled by default. This patch adds the corresponding qemu
capabilities in libvirt as QEMU_CAPS_PIIX_ACPI_ROOT_PCI_HOTPLUG.

Please note that the test specific qemu capabilities .replies files has already
been updated as a part of regular refreshing them when a new qemu version is
released. Hence, no updates to those files are required.

Signed-off-by: Ani Sinha <ani@anisinha.ca>
Reviewed-by: Laine Stump <laine@redhat.com>
This commit is contained in:
Ani Sinha
2021-10-01 14:59:45 +05:30
committed by Laine Stump
parent 4ad3c95f4b
commit fdec09b00a
5 changed files with 6 additions and 0 deletions
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1
tests/qemucapabilitiesdata/caps_6.1.0.x86_64.xml
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@@ -242,6 +242,7 @@
<flag name='virtio-blk.queue-size'/>
<flag name='virtio-mem-pci'/>
<flag name='memory-backend-file.reserve'/>
<flag name='piix4-acpi-root-hotplug-en'/>
<version>6001000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>43100243</microcodeVersion>