linux-kernel - [PATCH 0/2] jump label updates

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Date:	Wed, 27 Oct 2010 17:07:08 -0400
From:	Jason Baron <jbaron@...hat.com>
To:	rostedt@...dmis.org, mingo@...e.hu
Cc:	mathieu.desnoyers@...ymtl.ca, hpa@...or.com, tglx@...utronix.de,
	andi@...stfloor.org, roland@...hat.com, rth@...hat.com,
	masami.hiramatsu.pt@...achi.com, fweisbec@...il.com,
	avi@...hat.com, davem@...emloft.net, vgoyal@...hat.com,
	sam@...nborg.org, tony@...eyournoodle.com,
	ddaney@...iumnetworks.com, dsd@...top.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] jump label updates

Hi,

So we finally tracked down the jump label crashes and it turned out that there
was a a bug in the compiler in the implementation of 'asm goto'. As the fix has
not yet been committed yet to gcc, and I don't have a simple test case to
check if the bug has been fixed, we are going to disable jump labels pending
a better test to detect that gcc has been fixed.

The second patch fixes a hang on Geode LX, b/c the no-op probing was done too
early - before the exception tables had even been setup.

thanks,

-Jason

Jason Baron (2):
  move arch_init_ideal_nop5 later
  jump label: disable due to compiler bug

 arch/x86/include/asm/alternative.h |    1 -
 arch/x86/kernel/alternative.c      |  132 ++++++++++++++++++------------------
 arch/x86/kernel/setup.c            |    6 --
 include/linux/jump_label.h         |    9 +++
 4 files changed, 76 insertions(+), 72 deletions(-)

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