From: Ingo Molnar <mingo@kernel.org>
Date: Mon, 25 May 2015 08:59:31 +0000 (+0200)
Subject: x86/fpu: Add debugging checks to all copy_kernel_to_*() functions
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~203^2~25
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=43b287b3f4d8665cd5a4909132259b663cc1c0e3;p=pandora-kernel.git

x86/fpu: Add debugging checks to all copy_kernel_to_*() functions

Copying from in-kernel FPU context buffers to FPU registers are
never supposed to fault.

Add debugging checks to copy_kernel_to_fxregs() and copy_kernel_to_fregs()
to double check this assumption.

Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Bobby Powers <bobbypowers@gmail.com>
Cc: Borislav Petkov <bp@alien8.de>
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: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---

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