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    SubjectRe: [RFC PATCH v2 54/69] KVM: VMX: Define VMCS encodings for shared EPT pointer
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    On 03/07/21 00:05, isaku.yamahata@intel.com wrote:
    > From: Sean Christopherson <sean.j.christopherson@intel.com>
    >
    > Add the VMCS field encoding for the shared EPTP, which will be used by
    > TDX to have separate EPT walks for private GPAs (existing EPTP) versus
    > shared GPAs (new shared EPTP).
    >
    > Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
    > Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
    > ---
    > arch/x86/include/asm/vmx.h | 2 ++
    > 1 file changed, 2 insertions(+)
    >
    > diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h
    > index 132981276a2f..56b3d32941fd 100644
    > --- a/arch/x86/include/asm/vmx.h
    > +++ b/arch/x86/include/asm/vmx.h
    > @@ -235,6 +235,8 @@ enum vmcs_field {
    > ENCLS_EXITING_BITMAP_HIGH = 0x0000202F,
    > TSC_MULTIPLIER = 0x00002032,
    > TSC_MULTIPLIER_HIGH = 0x00002033,
    > + SHARED_EPT_POINTER = 0x0000203C,
    > + SHARED_EPT_POINTER_HIGH = 0x0000203D,
    > GUEST_PHYSICAL_ADDRESS = 0x00002400,
    > GUEST_PHYSICAL_ADDRESS_HIGH = 0x00002401,
    > VMCS_LINK_POINTER = 0x00002800,
    >

    Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>

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