Re: [Qemu-devel] [PATCH] x86: Increase max vcpu number to 352

[Paolo Bonzini]

On 10/08/2017 12:08, Lan Tianyu wrote:
> Intel Xeon phi chip will support 352 logical threads. For HPC
> usage case, it will create a huge VM with vcpus number as same as host
> cpus. This patch is to increase max vcpu number to 352.

Even without Xeon Phi, a 24-core, 8-socket system (E7-8890 v4 for
example) will have 384 physical CPUs.  288 was the biggest we could test
at the time, but now that the 256 vCPU barrier has been broken I agree
with going straight to 512.

Paolo