From: Andi Kleen <ak@suse.de>
To: discuss@x86-64.org
Cc: Christoph Lameter <clameter@engr.sgi.com>,
Bharata B Rao <bharata@in.ibm.com>,
Ray Bryant <raybry@mpdtxmail.amd.com>,
linux-kernel@vger.kernel.org
Subject: Re: [discuss] mmap, mbind and write to mmap'ed memory crashes 2.6.16-rc1[2] on 2 node X86_64
Date: Wed, 8 Feb 2006 17:27:31 +0100 [thread overview]
Message-ID: <200602081727.31850.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.62.0602080816560.2289@schroedinger.engr.sgi.com>
On Wednesday 08 February 2006 17:20, Christoph Lameter wrote:
> On Wed, 8 Feb 2006, Andi Kleen wrote:
>
> > > So a provisional solution would be to simply ignore empty zones in
> > > bind_zonelist?
> >
> > That would likely prevent the crash yes (Bharata can you test?)
> >
> > But of course it still has the problem of a lot of memory being unpolicied
> > on machines with >4GB if there's both DMA32 and NORMAL.
>
> The fix could result in a zonelist with no zones. So we can answer one
> question in __alloc_pages().
I don't think it can happen - at least one zone <= policy-zone has to
have memory otherwise the machine wouldn't work at all.
-Andi
next prev parent reply other threads:[~2006-02-08 16:28 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20060205163618.GB21972@in.ibm.com>
2006-02-05 17:03 ` [discuss] mmap, mbind and write to mmap'ed memory crashes 2.6.16-rc1[2] on 2 node X86_64 Andi Kleen
2006-02-06 16:11 ` Christoph Lameter
2006-02-06 18:12 ` Andi Kleen
2006-02-06 18:25 ` Christoph Lameter
2006-02-06 18:31 ` Andi Kleen
2006-02-06 18:45 ` Christoph Lameter
2006-02-06 18:55 ` Andi Kleen
2006-02-06 19:22 ` Christoph Lameter
2006-02-07 5:59 ` Bharata B Rao
2006-02-07 16:49 ` Christoph Lameter
2006-02-07 23:27 ` Ray Bryant
2006-02-07 23:36 ` Andi Kleen
2006-02-08 12:10 ` Bharata B Rao
2006-02-08 15:42 ` Christoph Lameter
2006-02-08 15:45 ` Andi Kleen
2006-02-08 15:59 ` Christoph Lameter
2006-02-08 16:06 ` Andi Kleen
2006-02-08 16:20 ` Christoph Lameter
2006-02-08 16:27 ` Andi Kleen [this message]
2006-02-08 16:51 ` Christoph Lameter
2006-02-09 4:39 ` Bharata B Rao
2006-02-09 9:58 ` Andi Kleen
2006-02-14 19:33 ` Christoph Lameter
2006-02-15 5:46 ` Bharata B Rao
2006-02-15 10:38 ` Bharata B Rao
2006-02-15 11:21 ` Andi Kleen
2006-02-15 18:14 ` Christoph Lameter
2006-02-16 5:18 ` Bharata B Rao
2006-02-15 18:10 ` Christoph Lameter
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