KVM: nVMX: Verify VMCS shadowing VMCS link pointer

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Intel SDM considers these checks to be part of
"Checks on Guest Non-Register State".

Note that it is legal for vmcs->vmcs_link_pointer to be -1ull
when VMCS shadowing is enabled. In this case, any VMREAD/VMWRITE to
shadowed-field sets the ALU flags for VMfailInvalid (i.e. CF=1).

Signed-off-by: Liran Alon <liran.alon@oracle.com>
Signed-off-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Liran Alon 2018-06-23 02:35:07 +03:00 • committed by Paolo Bonzini

parent a8a7c02bf7

commit f145d90d97

1 changed files with 28 additions and 2 deletions

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arch/x86/kvm/vmx.c

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