5f8d930f7baaf19b827043c6f9bf62db3 parent 3fe0344faf7fdcb158bd5c1a9aec960a8d70c8e8 author Jeremy Fitzhardinge 1240558859 -0700 committer Jeremy Fitzhardinge 1245270085 -0700 x86: split out core __math_state_restore Split the core fpu state restoration out into __math_state_restore, which assumes that cr0.TS is clear and that the fpu context has been initialized. This will be used during context switch. There are two reasons this is desireable: - There's a small clarification. When __switch_to() calls math_state_restore, it relies on the fact that tsk_used_math() returns true, and so will never do a blocking init_fpu(). __math_state_restore() does not have (or need) that logic, so the question never arises. - It allows the clts() to be moved earler in __switch_to() so it can be performed while cpu context updates are batched (will be done in a later patch). [ Impact: refactor code to make reuse cleaner; no functional change ] Signed-off-by: Jeremy Fitzhardinge Cc: Alok Kataria Cc: Rusty Russell ǚE"x