KVM: x86: Use KVM-governed feature framework to track "LAM enabled"

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Use the governed feature framework to track if Linear Address Masking (LAM)
is "enabled", i.e. if LAM can be used by the guest.

Using the framework to avoid the relative expensive call guest_cpuid_has()
during cr3 and vmexit handling paths for LAM.

No functional change intended.

Signed-off-by: Binbin Wu <binbin.wu@linux.intel.com>
Tested-by: Xuelian Guo <xuelian.guo@intel.com>
Link: https://lore.kernel.org/r/20230913124227.12574-14-binbin.wu@linux.intel.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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This commit is contained in:

Binbin Wu 2023-09-13 20:42:24 +08:00 • committed by Sean Christopherson

parent 703d794cb8

commit 183bdd161c

4 changed files with 4 additions and 4 deletions

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3

arch/x86/kvm/cpuid.h

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1

arch/x86/kvm/governed_features.h

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3

arch/x86/kvm/mmu.h

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1

arch/x86/kvm/vmx/vmx.c

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