[RFC PATCH v3 43/59] KVM: VMX: Define VMCS encodings for shared EPT pointer

isaku.yamahata
2021-11-25T00:23:07Z

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,
--
2.25.1