libvirt/cpu-phys-bits-passthrough2.err at cdc22d9a21e472a02dae8157e3cca5832f161feb - libvirt - Gitea

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Dario Faggioli 1c1a7cdd40 qemu: Add support for max physical address size

This patch maps /domain/cpu/maxphysaddr into -cpu parameters:

  - <maxphysaddr mode='passthrough'/> becomes host-phys-bits=on
  - <maxphysaddr mode='emualte' bits='42'/> becomes phys-bits=42

Passthrough mode can only be used if the chosen CPU model is
'host-passthrough'. Also validate that an explicitly specified
bits value does not exceed the physical address bits on the host.

The feature is available since QEMU 2.7.0.

Signed-off-by: Dario Faggioli <dfaggioli@suse.com>
Signed-off-by: Jim Fehlig <jfehlig@suse.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>

2022-08-04 09:04:16 +02:00

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unsupported configuration: CPU maximum physical address bits mode 'passthrough' can only be used with 'host-passthrough' CPUs