From: Andi Kleen <ak@suse.de>
To: Yasunori Goto <y-goto@jp.fujitsu.com>
Cc: Christoph Lameter <clameter@engr.sgi.com>,
torvalds@osdl.org, akpm@osdl.org, linux-mm@kvack.org
Subject: Re: [PATCH for 2.6.16] Handle holes in node mask in node fallback list initialization
Date: Fri, 17 Feb 2006 10:58:32 +0100 [thread overview]
Message-ID: <200602171058.33078.ak@suse.de> (raw)
In-Reply-To: <20060217145409.4064.Y-GOTO@jp.fujitsu.com>
On Friday 17 February 2006 07:10, Yasunori Goto wrote:
> > > Empty nodes are not initialization, but the node number is still
> > > allocated. And then it would early except or even triple fault here
> > > because it would try to set up a fallback list for a NULL pgdat. Oops.
> >
> > Isnt this an issue with the arch code? Simply do not allocate an empty
> > node. Is the mapping from linux Node id -> Hardware node id fixed on
> > x86_64? ia64 has a lookup table.
>
> Do you mention about pxm_to_nid_map[]?
I think he refers to cpu_to_node[]
> Ia64 added the feature of memory less node long time ago.
x86-64 too, but it just bitrotted and that is what I was trying to fix.
I did some tests with a simulator in a few combinations of memory less
CPUs and with the two patches they all boot so far. But will test it out more.
-Andi
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next prev parent reply other threads:[~2006-02-17 9:58 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-17 1:23 Andi Kleen
2006-02-17 1:40 ` Christoph Lameter
2006-02-17 1:46 ` Andi Kleen
2006-02-17 2:12 ` KAMEZAWA Hiroyuki
2006-02-17 1:51 ` Christoph Lameter
2006-02-17 2:10 ` Andi Kleen
2006-02-17 2:46 ` Christoph Lameter
2006-02-17 6:10 ` Yasunori Goto
2006-02-17 9:58 ` Andi Kleen [this message]
2006-02-17 11:23 ` Bob Picco
2006-02-17 12:15 ` Andi Kleen
2006-02-17 14:34 ` Lee Schermerhorn
2006-02-17 16:05 ` Christoph Lameter
2006-02-17 3:33 ` Yasunori Goto
2006-02-17 16:52 ` Linus Torvalds
2006-02-17 18:07 ` Andi Kleen
2006-02-17 18:38 ` Linus Torvalds
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