x86/fpu: Simplify __save_fpu()
__save_fpu() has this pattern: if (unlikely(system_state == SYSTEM_BOOTING)) xsave_state_booting(&fpu->state.xsave); else xsave_state(&fpu->state.xsave); ... but it does not actually get called during system bootup. So remove the complication and always call xsave_state(). To make sure this assumption is correct, add a WARN_ONCE() debug check to xsave_state(). Reviewed-by:Borislav Petkov <bp@alien8.de> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Dave Hansen <dave.hansen@linux.intel.com> Cc: Fenghua Yu <fenghua.yu@intel.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Ingo Molnar <mingo@kernel.org>
parent
32b49b3c
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