FYI, a fix is still on the way and hopefully land soonish: https://lists.proxmox.com/pipermail/pve-devel/2024-July/064420.html
My original patch was rejected, because it would hurt performance too much and doing it properly without that performance penalty required upstreaming a new feature in QEMU, which took a while, and landed in QEMU 8.2: https://gitlab.com/qemu-project/qemu/-/commit/2d400d15a02dca3b7b90761b2f0bb2322e99e11a
The patch on the pve-devel list is then for making use of the feature in Proxmox VE's qemu-server management code.
