Based on the RFC and following on- and off-list discussion about custom CPU models [0].
In essence, this revised patch allows a user to specify custom CPU models in /etc/pve/cpu-models.conf (section-config style [1]), where VMs using that CPU model inherit details from the definition. This removes any fragile "auto-magical" CPU flag detection, while still giving the user a way to create VMs with the best possible subset of CPU features maintaining live-migration compatibility. Includes the infrastructure for broadcasting supported CPU flags for each cluster-node via the key-value store - this is not necessary for the custom-cpu feature in particular, but I think could prove useful for implementing the GUI part (e.g. show the user which flags are supported on which nodes). I intentionally wanted to send this series before starting any GUI or new API work, to get some feedback if this approach works better than the cluster-cpu one. [0]: https://pve.proxmox.com/pipermail/pve-devel/2019-July/038268.html [1]: e.g.: cpu-model: custom-cpu-name host-phys-bits 1 flags +aes;+avx;+avx2 basemodel kvm64 qemu: Stefan Reiter (1): Trigger pve-api-updates on update debian/triggers | 1 + 1 file changed, 1 insertion(+) create mode 100644 debian/triggers manager: Stefan Reiter (1): Broadcast supported CPU flags PVE/Service/pvestatd.pm | 28 ++++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) qemu-server: Stefan Reiter (5): Add QEMU CPU flag querying helpers Add CustomCPUConfig for storing/parsing custom CPU models Support custom CPU types in get_cpu_options Handle CPU flags defined in custom CPU type Allow custom CPU types in API PVE/QemuServer.pm | 173 +++++++++++++++++++++++++++++- PVE/QemuServer/CustomCPUConfig.pm | 129 ++++++++++++++++++++++ PVE/QemuServer/Makefile | 1 + 3 files changed, 299 insertions(+), 4 deletions(-) create mode 100644 PVE/QemuServer/CustomCPUConfig.pm -- 2.20.1 _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com https://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel
