Struct XsaveProfile 

pub struct XsaveProfile {
    pub xcr0_mask: u64,
    pub area_size: usize,
    pub align: usize,
}

Cached extended-state save profile, frozen once at init().

Precomputed so context-switch / task-creation code never walks CPUID leaf 0x0D sub-leaves at runtime (see xsave_size_for_xcr0, which is correct but too slow for hot paths).

Fields

xcr0_mask: u64

XCR0 mask the kernel programs (x87|SSE|AVX|AVX-512 as available).

area_size: usize

Save-area size in bytes for that mask, rounded UP to a 64-byte multiple so allocators can over-allocate safely.

align: usize

Alignment required by the save instruction: XSAVE/XRSTOR fault (#GP) on non-64-byte operands; FXSAVE/FXRSTOR only require 16 bytes, but we standardize on 64 everywhere (over-alignment is harmless).

Trait Implementations

impl Clone for XsaveProfile

fn clone(&self) -> XsaveProfile

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for XsaveProfile

impl Debug for XsaveProfile

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.