From: Christoph Hellwig <hch@infradead.org>
To: Andrea Arcangeli <andrea@suse.de>
Cc: Christoph Hellwig <hch@suse.de>,
"Martin J. Bligh" <Martin.Bligh@us.ibm.com>,
Hugh Dickins <hugh@veritas.com>,
Rik van Riel <riel@conectiva.com.br>,
Dave McCracken <dmccr@us.ibm.com>,
linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: Creating a per-task kernel space for kmap, user pagetables, et al
Date: Wed, 20 Mar 2002 21:46:07 +0000 [thread overview]
Message-ID: <20020320214607.A6363@infradead.org> (raw)
In-Reply-To: <127930000.1016651345@flay> <20020320212341.M4268@dualathlon.random> <20020320203520.A2003@infradead.org> <20020320223425.P4268@dualathlon.random>
On Wed, Mar 20, 2002 at 10:34:25PM +0100, Andrea Arcangeli wrote:
> > The problem is not the 4GB ZONE_NORMAL but the ~1GB KVA space.
>
> Then you misunderstood what's the zone-normal, the zone normal is 800M
> in size not 4GB.
No, it was braino when writing.
> The 1GB of KVA is what constraint the size of the zone
> normal to 800M. We're talking about the same thing, just looking at it
> from different point of views.
Okay agreed now after the 'reminder'.
> > UnixWare/OpenUnix had huge problems getting all kernel structs for managing
> > 16GB virtual into that - on the other hand their struct page is more
> > then twice as big as ours..
>
> We do pretty well with pte-highmem, there is some other bit that will be
> better to optimize, but nothing major.
One major area to optimize are the kernel stacks I think.
next prev parent reply other threads:[~2002-03-20 21:51 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-03-20 19:09 Creating a per-task kernel space for kmap, user pagetables, et al Martin J. Bligh
2002-03-20 19:36 ` Rik van Riel
2002-03-20 20:26 ` Andrea Arcangeli
2002-03-20 19:45 ` Christoph Hellwig
2002-03-20 23:39 ` Alan Cox
2002-03-21 4:21 ` Itai Nahshon
2002-03-21 13:34 ` Alan Cox
2002-03-21 14:34 ` Martin J. Bligh
2002-03-21 15:38 ` Itai Nahshon
2002-03-20 19:56 ` Hugh Dickins
2002-03-20 20:23 ` Andrea Arcangeli
2002-03-20 20:35 ` Christoph Hellwig
2002-03-20 21:17 ` Hugh Dickins
2002-03-20 21:38 ` Andrea Arcangeli
2002-03-20 21:34 ` Andrea Arcangeli
2002-03-20 21:46 ` Christoph Hellwig [this message]
2002-03-20 22:00 ` Andrea Arcangeli
2002-03-21 19:54 ` Greg KH
2002-03-21 23:29 ` Andrea Arcangeli
2002-03-21 23:49 ` William Lee Irwin III
2002-03-22 1:20 ` Andrea Arcangeli
2002-03-20 22:10 ` Martin J. Bligh
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