On Tue, 12 Jun 2018 11:49:22 -0300 Eduardo Habkost <ehabk...@redhat.com> wrote:
> On Tue, Jun 12, 2018 at 03:58:03PM +0200, Igor Mammedov wrote: > [...] > > > > > + if (xcc->host_cpuid_required && enable_cpu_pm) { > > > > > + host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx, > > > > > + &cpu->mwait.ecx, &cpu->mwait.edx); > > > > > + } [...] > > > > also max_x86_cpu_initfn() might be better place for filling it up. > > Why? I've missed 'enable_cpu_pm' which is probably a property, so yep it can't go into initfn. However if we not going to migrate this state or use outside of cpu_x86_cpuid(), I don't see why we should add it to X86CPU state and keep around. We can query it on demand from cpu_x86_cpuid() like we do for PMU leaf.