Re: [RFC v3 00/24] Add Realm support to QEMU-VMM

["Daniel P. Berrangé" <berrange@redhat.com>]

On Tue, Aug 25, 2026 at 04:00:37PM -0600, Mathieu Poirier wrote:
> This patchset provides minimal functionality to start a Realm VM
> from an Arm RME capable host using the following command line:
> 
> qemu-system-aarch64 \
>  -M confidential-guest-support=rme0,memory-backend=ram0 \
>  -object rme-guest,id=rme0,convert-in-place=on \
>  -object memory-backend-guest-memfd,id=ram0,size=1G,share=on \
>  -cpu host -M virt -enable-kvm -M gic-version=3,its=on -nodefaults ..

This example mentions 'convert-in-place=on', but I don't see that property
implemented in this series. Is the example a mistake or is this from a
further follow-on series yet to come ?


Also as a more general conceptual question, in there going to be any
equiv to SNP's  "hostdata" or TDX's  "mr-config-id", that will let the
guest owner pass in some bytes of data that get included in the
measurement ?  Trustee has mention of "CCA_REALM_PERSONALIZATION_VALUE"
for Arm.  Would that become a property of 'rme-guest' in future work ?


With regards,
Daniel

[1] https://github.com/confidential-containers/trustee/blob/main/kbs/docs/initdata.md
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