[pve-devel] [PATCH v4 qemu-server 1/1] cpuconfig: add new x86-64-vX models

[DERUMIER, Alexandre]

> 
> So again, sounds like the xsave feature is required for the osxsave
> feature to even make sense.
> 
The problem is that xsaves is not supported on all intel/amd cpu, 

older model don't seem to support xsaves too  (intel only since
sandybridge , amd since epyc v1)
https://github.com/qemu/qemu/blob/master/target/i386/cpu.c#L3050



but also newer model depending of firmware revision

"target/i386: EPYC-Rome model without XSAVES"
https://github.com/qemu/qemu/commit/fb00aa61267c8b9c57a2d1a1fa1e336d02e3bcd1