linux-kernel - Re: [PATCH, -v3] compiler/gcc4: Add quirk for 'asm goto' miscompilation bug

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Message-ID: <20131012170340.GA15988@gmail.com>
Date:	Sat, 12 Oct 2013 19:03:40 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	Fengguang Wu <fengguang.wu@...el.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Jakub Jelinek <jakub@...hat.com>,
	Richard Henderson <rth@...ddle.net>,
	Peter Zijlstra <peterz@...radead.org>,
	Oleg Nesterov <oleg@...hat.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH, -v3] compiler/gcc4: Add quirk for 'asm goto'
 miscompilation bug


* Fengguang Wu <fengguang.wu@...el.com> wrote:

> Ingo,
> 
> After adding more test runs to these kernels, we can see that the boot hangs
> happen both before/after patch. So the patch is fine. 
> 
> Tested-by: Fengguang Wu <fengguang.wu@...el.com>

Cool, thanks for all the testing - I'll send the fix to Linus.

> btw, the boot hangs all happen in one of the test boxes, which is 
> probably misconfigured or not reliable.

... or somehow has hardware layout/properties that triggers a particularly 
nasty kernel bug.

Thanks,

	Ingo
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