svn commit: r364340 - in head/sys/amd64: include vmm vmm/intel

Peter Grehan grehan at freebsd.org
Tue Aug 18 09:06:54 UTC 2020


On 8/18/20 6:48 PM, Konstantin Belousov wrote:
> On Tue, Aug 18, 2020 at 07:23:47AM +0000, Peter Grehan wrote:
>> +void
>> +vmx_msr_guest_exit_tsc_aux(struct vmx *vmx, int vcpuid)
>> +{
>> +	uint64_t guest_tsc_aux = vmx->guest_msrs[vcpuid][IDX_MSR_TSC_AUX];
>> +	uint32_t cpuid = PCPU_GET(cpuid);
>> +
>> +	if (vmx_have_msr_tsc_aux(vmx) && (guest_tsc_aux != cpuid))
> This is quite unobvious place to look at if host TSC_AUX is ever going
> to provide something different from cpuid.
> 
> Could you please add a comment at
> {i386/i386,

  No bhyve on i386.

> amd64/amd64}/initcpu.c::initializecpu() around TSC_AUX
> settings pointing out this code ?

  Sure, will do.

later,

Peter.


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