From: Andi Kleen <ak@suse.de>
To: Christoph Lameter <clameter@sgi.com>
Cc: linux-mm@kvack.org, haveblue@us.ibm.com
Subject: Re: One idea to free up page flags on NUMA
Date: Mon, 25 Sep 2006 05:04:58 +0200 [thread overview]
Message-ID: <200609250504.58427.ak@suse.de> (raw)
In-Reply-To: <Pine.LNX.4.64.0609241730470.19511@schroedinger.engr.sgi.com>
On Monday 25 September 2006 02:31, Christoph Lameter wrote:
> On Sun, 24 Sep 2006, Andi Kleen wrote:
>
> > > Hmmm... It only maps the kernel text segment?
> > Only lowmem (normally upto ~900MB)
> >
> > But virtual memory is very scarce so I don't know where a new map for mem_map
> > would come from. Ok you could try to move the physical location of mem_map to
> > somewhere not in lowmem I suppose.
>
> Right could be in highmem and thus would free up around 20 Megabytes of
> low memory.
But won't the vmemmap need more than the 20MB?
-Andi
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next prev parent reply other threads:[~2006-09-25 3:04 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-09-23 3:02 One idea to free up page flags on NUMA Christoph Lameter
2006-09-23 16:04 ` Andi Kleen
2006-09-23 16:39 ` Christoph Lameter
2006-09-23 18:43 ` Andi Kleen
2006-09-24 1:57 ` Christoph Lameter
2006-09-24 7:24 ` Andi Kleen
2006-09-25 0:31 ` Christoph Lameter
2006-09-25 3:04 ` Andi Kleen [this message]
2006-09-25 3:46 ` Christoph Lameter
2006-09-23 19:24 ` Dave Hansen
2006-09-24 1:56 ` Christoph Lameter
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