KVM: nVMX: add missing consistency checks for CR0 and CR4

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The effective values of the guest CR0 and CR4 registers may differ from
those included in the VMCS12.  In particular, disabling EPT forces
CR4.PAE=1 and disabling unrestricted guest mode forces CR0.PG=CR0.PE=1.

Therefore, checks on these bits cannot be delegated to the processor
and must be performed by KVM.

Reported-by: Reima ISHII <ishiir@g.ecc.u-tokyo.ac.jp>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Paolo Bonzini 2023-03-10 11:10:56 -05:00

parent bceeedb2f0

commit 112e66017b

1 changed files with 8 additions and 2 deletions

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arch/x86/kvm/vmx/nested.c

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