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hw/i386/pc_piix: Make PIIX4 south bridge usable in PC machine

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QEMU's PIIX3 implementation actually models the real PIIX4, but with different
PCI IDs. Usually, guests deal just fine with it. Still, in order to provide a
more consistent illusion to guests, allow QEMU's PIIX4 implementation to be used
in the PC machine.

Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Message-Id: <20231007123843.127151-30-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Bernhard Beschow 2023-10-07 14:38:37 +02:00 • committed by Michael S. Tsirkin
parent 12cecd4550
commit aa0c9aec57
4 changed files with 71 additions and 1 deletions
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8
docs/system/target-i386-desc.rst.inc
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@ -71,3 +71,11 @@ machine property, i.e.
|qemu_system_x86| some.img \
-audiodev <backend>,id=<name> \
-machine pcspk-audiodev=<name>
Machine-specific options
~~~~~~~~~~~~~~~~~~~~~~~~
It supports the following machine-specific options:
- ``x-south-bridge=PIIX3|piix4-isa`` (Experimental option to select a particular
south bridge. Default: ``PIIX3``)