From: Andi Kleen <andi@firstfloor.org>
To: Peter P Waskiewicz Jr <peter.p.waskiewicz.jr@intel.com>
Cc: tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com,
x86@kernel.org, linux-kernel@vger.kernel.org,
andi@firstfloor.org, netdev@vger.kernel.org
Subject: Re: [PATCH] [arch-x86] Allow SRAT integrity check to be skipped
Date: Wed, 1 Sep 2010 23:33:37 +0200 [thread overview]
Message-ID: <20100901213337.GA8844@basil.fritz.box> (raw)
In-Reply-To: <20100901213318.19353.54619.stgit@localhost.localdomain>
On Wed, Sep 01, 2010 at 02:33:18PM -0700, Peter P Waskiewicz Jr wrote:
> On certain BIOSes, SRAT enumeration isn't exported correctly.
> This leads to NUMA node enumeration failure, and causes the kernel
> to fall back onto a single node treated as flat memory. This
> can happen on large, multi-socket systems (4 or more sockets), and
> becomes problematic for performance.
>
> This patch adds a boot parameter to allow a kernel to be booted
> with the option to skip the SRAT check. There are BIOSes in
> production that have these failures, so this will allow people
> in the field to work around these BIOS issues.
Looks good.
Reviewed-by: Andi Kleen <ak@linux.intel.com>
-Andi
next prev parent reply other threads:[~2010-09-01 21:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-01 21:33 [PATCH] [arch-x86] Allow SRAT integrity check to be skipped Peter P Waskiewicz Jr
2010-09-01 21:33 ` Andi Kleen [this message]
2010-09-01 22:04 ` rdunlap
2010-09-01 22:11 ` Peter P Waskiewicz Jr
2010-09-08 19:09 ` H. Peter Anvin
2010-09-03 10:04 ` Andi Kleen
2010-09-02 6:57 ` Ingo Molnar
2010-09-02 10:03 ` Andi Kleen
2010-09-03 6:39 ` Ingo Molnar
2010-09-07 19:38 ` Peter P Waskiewicz Jr
2010-09-07 19:56 ` Ingo Molnar
2010-09-07 20:03 ` H. Peter Anvin
2010-09-07 20:16 ` Peter P Waskiewicz Jr
2010-09-07 20:48 ` H. Peter Anvin
2010-09-08 6:55 ` Andi Kleen
2010-09-08 18:03 ` H. Peter Anvin
2010-09-08 18:51 ` Peter P Waskiewicz Jr
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