Am 23.09.26 um 23:44 schrieb Matthew Rosato:
On 9/23/26 4:33 AM, Janosch Frank wrote:
People doing VM management requested a way to query if a VM is in PV
or not. This of course does never replace attestation, it's merely
QEMU's view of the situation.
Signed-off-by: Janosch Frank <[email protected]>
CC: Hendrik Brueckner <[email protected]>
I wondered for a bit about migration, but seeing as it's fenced for pv I
think the only weird scenario would be migrating to an older QEMU using
a pre-11.2 machine type and go from being able to see the attribute read
'false' to no longer being able to see the attribute with the same qemu
command line.
Do you think that would matter for tooling e.g. do we need tie the
visibility of the property to 11.2+ machine?
I dont think so
- Whether the property exists depends on the QEMU binary, not the machine type.
Tools find it with qom-list.
- The command line can't change, because the property can't be set.
- Other read-only properties aren't tied to machine versions either, e.g. spapr
vfio-no-msix-emulation
