Constant FEATURE_FLAGS_D 

pub const FEATURE_FLAGS_D: CpuidValue<0x1, 0x0, EDX, FeatureFlagsD>;

Leaf/Function 0x1, EDX

[intel/vol2]: Table 3-11. More on Feature Information Returned in the EDX Register. [amd/vol3]: E.3.6 Function 7h—Structured Extended Feature Identifiers.