pub unsafe fn __get_cpuid_max(leaf: u32) -> (u32, u32)Available on x86-64 and (x86 or x86-64) only.
Expand description
Returns the highest-supported leaf (EAX) and sub-leaf (ECX) cpuid
values.
If cpuid is supported, and leaf is zero, then the first tuple argument
contains the highest leaf value that cpuid supports. For leafs
containing sub-leafs, the second tuple argument contains the
highest-supported sub-leaf value.
See also __cpuid and
__cpuid_count.