Re: [PATCH v6 24/51] x86/kvm: Get CPU base frequency from CPUID when it's available

David Woodhouse <[email protected]>
Newsgroups gmane.linux.kernel.virtualization,gmane.comp.emulators.kvm.devel,gmane.linux.kernel,gmane.comp.emulators.xen.devel
Message-ID <[email protected]>
On Thu, 2026-08-06 at 16:35 -0700, Sean Christopherson wrote:
> If CPUID.0x16 is present and valid, use the CPU frequency provided by
> CPUID instead of assuming that the virtual CPU runs at the same
> frequency as TSC and/or kvmclock.  Back before constant TSCs were a
> thing, treating the TSC and CPU frequencies as one and the same was
> somewhat reasonable, but now it's nonsensical, especially if the
> hypervisor explicitly enumerates the CPU frequency.
>
> Signed-off-by: Sean Christopherson <[email protected]>

I still don't think I care about Sashiko's complaint.

Reviewed-by: David Woodhouse <[email protected]>
smime.p7s (application/pkcs7-signature, 6 KB) - not displayed
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.