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Update VMCS-GUEST.md

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_xeroxz 4 years ago
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VMCS-GUEST.md
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@ -67,12 +67,14 @@ This section specifies the checks on the fields for CS, SS, DS, ES, FS, GS, TR,
- SS. If the guest will not be virtual-8086 and the “unrestricted guest” VM-execution control is 0, the RPL - SS. If the guest will not be virtual-8086 and the “unrestricted guest” VM-execution control is 0, the RPL
(bits 1:0) must equal the RPL of the selector field for CS. (bits 1:0) must equal the RPL of the selector field for CS.
* Base-address fields. * Base-address fields.
- TR, FS, GS. The address must be canonical. - TR, FS, GS. The address must be canonical.
- CS. Bits 63:32 of the address must be zero. - CS. Bits 63:32 of the address must be zero.
- SS, DS, ES. If the register is usable, bits 63:32 of the address must be zero. - SS, DS, ES. If the register is usable, bits 63:32 of the address must be zero.
* Access-rights fields for CS, SS, DS, ES, FS, GS. * Access-rights fields for CS, SS, DS, ES, FS, GS.
- CS Bits 3:0 (Type): must be 9, 11, 13, or 15 (accessed code segment). - CS Bits 3:0 (Type): must be 9, 11, 13, or 15 (accessed code segment).

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