KVM: nSVM: Don't sync tlb_ctl back to vmcb12 on nested VM-Exit

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Don't sync the TLB control field from vmcb02 to vmcs12 on nested VM-Exit.
Per AMD's APM, the field is not modified by hardware:

  The VMRUN instruction reads, but does not change, the value of the
  TLB_CONTROL field

Signed-off-by: Maxim Levitsky <mlevitsk@redhat.com>
Tested-by: Santosh Shukla <Santosh.Shukla@amd.com>
Link: https://lore.kernel.org/r/20221129193717.513824-2-mlevitsk@redhat.com
[sean: massage changelog]
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Maxim Levitsky 2022-11-29 21:37:07 +02:00 • committed by Sean Christopherson

parent a31b531cd2

commit 8957cbcfed

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arch/x86/kvm/svm/nested.c

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