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| author | Jim Mattson <jmattson@google.com> | 2018-09-24 11:05:43 -0700 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2018-11-27 12:53:45 +0100 |
| commit | 88656040b0c0c09202fbcb461a8c33d2ec1c0c19 (patch) | |
| tree | 3cbdd01563c49cd361344fa52050c073de5551bf /arch/x86/include/asm/vmx.h | |
| parent | 09f70c3b70e7d9e209a820b54dda42502fa40711 (diff) | |
| download | linux-0-day-88656040b0c0c09202fbcb461a8c33d2ec1c0c19.tar.gz linux-0-day-88656040b0c0c09202fbcb461a8c33d2ec1c0c19.tar.xz | |
KVM: nVMX: Unrestricted guest mode requires EPT
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>
Diffstat (limited to 'arch/x86/include/asm/vmx.h')
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index ade0f153947db..898c443eeed10 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -78,6 +78,7 @@ #define SECONDARY_EXEC_RDSEED_EXITING 0x00010000 #define SECONDARY_EXEC_ENABLE_PML 0x00020000 #define SECONDARY_EXEC_XSAVES 0x00100000 +#define SECONDARY_EXEC_MODE_BASED_EPT_EXEC 0x00400000 #define SECONDARY_EXEC_TSC_SCALING 0x02000000 #define PIN_BASED_EXT_INTR_MASK 0x00000001 |