Messages in this thread | | | Date | Mon, 27 Jun 2022 15:19:15 +0000 | From | Sean Christopherson <> | Subject | Re: [PATCH v4] KVM: x86/xen: Update Xen CPUID Leaf 4 (tsc info) sub-leaves, if present |
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On Wed, Jun 22, 2022, Paul Durrant wrote: > The scaling information in subleaf 1 should match the values set by KVM in > the 'vcpu_info' sub-structure 'time_info' (a.k.a. pvclock_vcpu_time_info) > which is shared with the guest, but is not directly available to the VMM. > The offset values are not set since a TSC offset is already applied. > The TSC frequency should also be set in sub-leaf 2. > > Cache pointers to the sub-leaves when CPUID is updated by the VMM and > populate the relevant information prior to entering the guest.
All of my comments about the code still apply.
https://lore.kernel.org/all/YrMqtHzNSean+qkh@google.com
> Signed-off-by: Paul Durrant <pdurrant@amazon.com> > --- > Cc: David Woodhouse <dwmw2@infradead.org>
Cc: can go in the changelog, it's helpful info to carry with the commit as it documents who was made aware of the patch, e.g. show who may have had a cance to object/review.
> > v2: > - Make sure sub-leaf pointers are NULLed if the time leaf is removed > > v3: > - Add leaf limit check in kvm_xen_set_cpuid() > > v4: > - Update commit comment
Please start with the most recent verison and work backardwards, that way reviewers can quickly see the delta for _this_ version. I.e.
v4:
v3:
v2:
v1:
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