hal_x86_64::cpu::intrinsics

Function ltr

Source 
pub unsafe fn ltr(sel: Selector)
Expand description

Perform one x86 ltr (Load Task Register) instruction.

ltr loads a task state segment (TSS) selector into the current task register.

§Safety

  • Intrinsics are inherently unsafe — this is just a less ugly way of writing inline assembly.
  • The provided segment selector must select a task state segment in the GDT.
  • The pointed TSS must not be deallocated or overwritten while it is active.

Prefer the higher-level task::StateSegment::load_tss API when possible.