KVM: nSVM: Use the "outer" helper for writing multiplier to MSR_AMD64_TSC_RATIO

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When emulating nested SVM transitions, use the outer helper for writing
the TSC multiplier for L2.  Using the inner helper only for one-off cases,
i.e. for paths where KVM is NOT emulating or modifying vCPU state, will
allow for multiple cleanups:

 - Explicitly disabling preemption only in the outer helper
 - Getting the multiplier from the vCPU field in the outer helper
 - Skipping the WRMSR in the outer helper if guest state isn't loaded

Opportunistically delete an extra newline.

No functional change intended.

Link: https://lore.kernel.org/r/20230729011608.1065019-4-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Sean Christopherson 2023-07-28 18:15:50 -07:00

parent 0c94e24684

commit c0dc39bd2c

3 changed files with 5 additions and 6 deletions

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4

arch/x86/kvm/svm/nested.c

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arch/x86/kvm/svm/svm.c

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arch/x86/kvm/svm/svm.h

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