From: Ingo Molnar <mingo@kernel.org>
Date: Mon, 27 Apr 2015 07:23:43 +0000 (+0200)
Subject: x86/fpu: Simplify __save_fpu()
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~203^2~109
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=72ee6f87adcb7b7bdb71cc81c22858811ee1a069;p=pandora-kernel.git

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>
---

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