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KVM: nSVM: check for EFER.SVME=1 before entering guest
authorPaolo Bonzini <pbonzini@redhat.com>
Wed, 18 Mar 2020 12:41:32 +0000 (13:41 +0100)
committerPaolo Bonzini <pbonzini@redhat.com>
Wed, 18 Mar 2020 12:41:32 +0000 (13:41 +0100)
commit58bc7bc5dfb541fcea372a85cc265e8ab119bb0c
tree16eaaceba5ca4351c290e97af546fe5b29b4ae61tree | snapshot
parent8c712ca56430fb9953cff1b7a3841f6599b085a0commit | diff
KVM: nSVM: check for EFER.SVME=1 before entering guest

EFER is set for L2 using svm_set_efer, which hardcodes EFER_SVME to 1 and hides
an incorrect value for EFER.SVME in the L1 VMCB.  Perform the check manually
to detect invalid guest state.

Reported-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/svm.c diff | blob | history
Linux Kernel Source Tree.