[pve-devel] [PATCH 0/7] Add basics for custom CPU models
Stefan Reiter
s.reiter at proxmox.com
Mon Sep 2 16:27:52 CEST 2019
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
More information about the pve-devel
mailing list