Hello Stephane,
I believe this change is very important and would fix an issue I'm having
on some of my servers. However the Proxmox team seems to be particular
about how they accept patches (which I don't blame them for, it just is
what it is). The details are here:
https://pve.proxmox.com/wiki/De
about qemu version,
theses vms was started around 6 november, after an update of the qemu
package the 4 november.
looking at proxmox repo, I think it should be 5.1.0-4 or -5.
pve-qemu-kvm-dbg_5.1.0-4_amd64.deb 29-Oct-2020 17:28
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pve-qemu-kvm-dbg_5.1.0-5_amd64.deb