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VMWRITE

VMWRITE writes a value to a specified field of the current Virtual Machine Control Structure (VMCS).

The table below covers what the source and destinations can be.

DO NOT support LOCK

VMWRITE SHALL only be executed in VMX root operation. Execution in VMX non-root operation SHALL result in a general-protection exception (#GP).

To avoid invalid operation errors, the immediate operand MUST specify a valid field encoding as defined by the VMCS field encoding table. Attempting to write to a read-only field or an unsupported field SHALL result in a #GP. The value loaded into the source register MUST be compatible with the size and format of the target VMCS field; otherwise, the behavior may be undefined or result in a #GP.