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

[Lorenzo Pieralisi <lpieralisi@kernel.org>]

On Thu, Aug 27, 2026 at 02:06:49PM +0100, Daniel P. Berrangé wrote:
> 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 ?

This series depends on Michael's patchset [0] as Mathieu mentioned in
this cover letter (+ a fixlet that was added in the QEmu repo reported
in this cover letter too that Michael should hopefully squash in in
his series to make it work for CCA and possible other arches).

[1] contains all of the above.

[0] https://lore.kernel.org/kvm/20260528000416.8161-1-michael.roth@amd.com/
[1] https://gitlab.com/Linaro/cca-public/qemu/-/tree/upstream-v3

Thanks,
Lorenzo