From: Andi Kleen <andi@firstfloor.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: castet.matthieu@free.fr, Lin Ming <ming.m.lin@intel.com>,
Siarhei Liakh <sliakh.lkml@gmail.com>,
Xuxian Jiang <jiang@cs.ncsu.edu>, Ingo Molnar <mingo@elte.hu>,
Arjan van de Ven <arjan@infradead.org>,
Andi Kleen <andi@firstfloor.org>,
lkml <linux-kernel@vger.kernel.org>, tglx <tglx@linutronix.de>
Subject: Re: -tip tree resume fail, bisect to 5bd5a45(x86: Add NX protection for kernel data)
Date: Mon, 22 Nov 2010 17:42:47 +0100 [thread overview]
Message-ID: <20101122164247.GC21836@basil.fritz.box> (raw)
In-Reply-To: <1290443758.2072.318.camel@laptop>
> That seems to be a S3 specific code path, that won't fix anything.
> Simply do:
>
> echo 0 > /sys/devices/system/cpu/cpu1/online;
> echo 1 > /sys/devices/system/cpu/cpu1/online;
>
> and your machine will explode..
The SMP startup trampoline is copied I believe
and only executed in real mode without page tables.
So it's perhaps not the trampoline, but the early startup
code that ends up being broken.
-Andi
--
ak@linux.intel.com -- Speaking for myself only.
next prev parent reply other threads:[~2010-11-22 16:42 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-22 7:23 -tip tree resume fail, bisect to 5bd5a45(x86: Add NX protection for kernel data) Lin Ming
2010-11-22 8:07 ` Ingo Molnar
2010-11-22 9:20 ` Andi Kleen
2010-11-22 10:29 ` castet.matthieu
2010-11-22 10:47 ` Andi Kleen
2010-11-22 13:03 ` Peter Zijlstra
2010-11-22 16:29 ` castet.matthieu
2010-11-22 16:35 ` Peter Zijlstra
2010-11-22 16:42 ` Andi Kleen [this message]
2010-11-23 22:55 ` mat
2010-11-26 17:31 ` mat
2010-11-26 23:39 ` Lin Ming
2010-11-30 5:00 ` Lin Ming
2010-11-30 11:27 ` Peter Zijlstra
2010-12-01 0:15 ` Lin Ming
2011-01-23 19:06 ` matthieu castet
2011-01-24 22:22 ` matthieu castet
2011-01-25 12:36 ` Lin Ming
2011-03-09 23:16 ` matthieu castet
2011-03-10 2:39 ` Lin Ming
2010-12-24 17:26 ` matthieu castet
2010-12-27 2:10 ` Lin Ming
2011-01-05 18:58 ` matthieu castet
2010-11-22 13:42 ` [tip:x86/security] x86: Resume trampoline must be executable tip-bot for Lin Ming
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