KVM: x86: Add & use kvm_vcpu_is_legal_cr3() to check CR3's legality

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Add and use kvm_vcpu_is_legal_cr3() to check CR3's legality to provide
a clear distinction between CR3 and GPA checks.  This will allow exempting
bits from kvm_vcpu_is_legal_cr3() without affecting general GPA checks,
e.g. for upcoming features that will use high bits in CR3 for feature
enabling.

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/20230913124227.12574-7-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 20:42:17 +08:00 • committed by Sean Christopherson

parent a130066f74

commit 2c49db455e

4 changed files with 11 additions and 6 deletions

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5

arch/x86/kvm/cpuid.h

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arch/x86/kvm/svm/nested.c

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arch/x86/kvm/vmx/nested.c

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arch/x86/kvm/x86.c

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