KVM: nVMX: Unrestricted guest mode requires EPT

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As specified in Intel's SDM, do not allow the L1 hypervisor to launch
an L2 guest with the VM-execution controls for "unrestricted guest" or
"mode-based execute control for EPT" set and the VM-execution control
for "enable EPT" clear.

Note that the VM-execution control for "mode-based execute control for
EPT" is not yet virtualized by kvm.

Reported-by: Andrew Thornton <andrewth@google.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Wanpeng Li <wanpengli@tencent.com>
Reviewed-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

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Jim Mattson 2018-09-24 11:05:43 -07:00 • committed by Paolo Bonzini

parent 09f70c3b70

commit 88656040b0

2 changed files with 25 additions and 0 deletions

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1

arch/x86/include/asm/vmx.h

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24

arch/x86/kvm/vmx.c

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