From: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
To: David Rientjes <rientjes@google.com>
Cc: kosaki.motohiro@jp.fujitsu.com,
Linus Torvalds <torvalds@linux-foundation.org>,
Ingo Molnar <mingo@elte.hu>,
Andreas Herrmann <herrmann.der.user@googlemail.com>,
linux-kernel@vger.kernel.org, Tejun Heo <tj@kernel.org>,
x86@kernel.org
Subject: Re: [patch 1/2] x86, numa: Revert "Fix fakenuma boot failure"
Date: Thu, 21 Apr 2011 14:45:43 +0900 (JST) [thread overview]
Message-ID: <20110421144621.7338.A69D9226@jp.fujitsu.com> (raw)
In-Reply-To: <alpine.DEB.2.00.1104201918110.12634@chino.kir.corp.google.com>
> 7d6b46707f24 (x86, NUMA: Fix fakenuma boot failure) could cause physical
> NUMA topologies to move sibling cpus to a single node when in reality
> they are in separate domains. This may result in some nodes being
> completely void of cpus, which doesn't accurately represent the correct
> topology.
>
> This commit was intended as a fix for NUMA emulation, but should not
> cause a regression for real NUMA machines as a side effect.
>
> Reported-by: Andreas Herrmann <herrmann.der.user@googlemail.com>
> Signed-off-by: David Rientjes <rientjes@google.com>
Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
next prev parent reply other threads:[~2011-04-21 5:45 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-19 4:57 Linux 2.6.39-rc4 Linus Torvalds
2011-04-19 20:04 ` [PATCH] uml: fix hppfs build Randy Dunlap
2011-04-19 20:09 ` Richard Weinberger
2011-04-20 15:39 ` Linux 2.6.39-rc4 (regression: NUMA on multi-node CPUs broken) Andreas Herrmann
2011-04-21 0:45 ` David Rientjes
2011-04-21 2:04 ` KOSAKI Motohiro
2011-04-21 2:17 ` David Rientjes
2011-04-21 5:45 ` KOSAKI Motohiro
2011-04-21 2:19 ` [patch 1/2] x86, numa: Revert "Fix fakenuma boot failure" David Rientjes
2011-04-21 2:19 ` [patch 2/2] x86, numa: Fix cpu nodemasks for NUMA emulation and CONFIG_DEBUG_PER_CPU_MAPS David Rientjes
2011-04-21 5:45 ` KOSAKI Motohiro
2011-04-21 19:43 ` David Rientjes
2011-04-21 12:10 ` [tip:x86/urgent] " tip-bot for David Rientjes
2011-04-21 5:45 ` KOSAKI Motohiro [this message]
2011-04-21 12:09 ` [tip:x86/urgent] Revert "x86, NUMA: Fix fakenuma boot failure" tip-bot for David Rientjes
2011-04-21 19:45 ` Linux 2.6.39-rc4 (regression: NUMA on multi-node CPUs broken) David Rientjes
2011-04-21 2:04 ` KOSAKI Motohiro
2011-04-21 6:04 ` Andreas Herrmann
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