From: Ingo Molnar <mingo@kernel.org>
Date: Wed, 22 Apr 2015 14:40:56 +0000 (+0200)
Subject: x86/fpu: Add debug check to kernel_fpu_disable()
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~174^2~213
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3103ae3a6d3e66d51bb883bb17b55574e163b77d;p=pandora-kernel.git

x86/fpu: Add debug check to kernel_fpu_disable()

We are not supposed to call kernel_fpu_disable() if we have not
previously enabled it.

Also use kernel_fpu_disable()/enable() in the __kernel_fpu_begin/end()
primitives, instead of writing to in_kernel_fpu directly,
so that we get the debugging checks.

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>
---

Reading git-diff-tree failed