From: Roland Dreier <roland@topspin.com>
To: Timothy Miller <miller@techsource.com>
Cc: "Randy.Dunlap" <rddunlap@osdl.org>,
jmerkey@comcast.net, alan@lxorguk.ukuu.org.uk,
wli@holomorphy.com, linux-kernel@vger.kernel.org,
jmerkey@drdos.com
Subject: Re: 1GB/2GB/3GB User Space Splitting Patch 2.6.8.1 (PSEUDO SPAM)
Date: Mon, 27 Sep 2004 07:55:26 -0700 [thread overview]
Message-ID: <528yaviwwx.fsf@topspin.com> (raw)
In-Reply-To: 4151DF1F.2050202@techsource.com
Timothy> Ok, I understand now. I think. With 0xc0000000, you
Timothy> have 128M of highmem, right? Why do you add 256M to the
Timothy> kernel address space? Is there a further advantage to that?
No real reason, just laziness. It's easier to change "0xc" to "0xb"
and not think rather than figuring out if 0xb8000000 will let me use
every last byte of RAM. (I'm not sure if I end up with exactly 128 MB
of highmem, or perhaps a shade more) For userspace, there's no
practical difference between having 2.75 GB of address space and 2.875
GB given that I have only 1 GB of real RAM.
- Roland
next prev parent reply other threads:[~2004-09-27 14:55 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-30 5:56 1GB/2GB/3GB User Space Splitting Patch 2.6.8.1 (PSEUDO SPAM) jmerkey
2004-08-30 18:10 ` Randy.Dunlap
2004-08-30 18:28 ` Roland Dreier
2004-09-22 18:52 ` Timothy Miller
2004-09-22 18:51 ` Roland Dreier
2004-09-22 20:22 ` Timothy Miller
2004-09-27 14:55 ` Roland Dreier [this message]
-- strict thread matches above, loose matches on Subject: below --
2004-08-31 22:50 jmerkey
2004-08-30 4:01 jmerkey
2004-08-30 4:35 ` Randy.Dunlap
2004-08-26 23:47 linux
2004-08-26 21:08 jmerkey
2004-08-26 21:43 ` William Lee Irwin III
2004-08-26 20:24 jmerkey
2004-08-26 20:38 ` William Lee Irwin III
2004-08-26 21:41 ` Dave Jones
2004-08-26 4:21 jmerkey
2004-08-26 4:33 ` William Lee Irwin III
2004-08-26 4:46 ` Roland Dreier
2004-08-26 4:49 ` William Lee Irwin III
2004-08-26 8:40 ` Ryan Cumming
2004-08-29 12:48 ` Alan Cox
2004-08-29 16:42 ` William Lee Irwin III
2004-08-29 15:45 ` Alan Cox
2004-08-29 17:00 ` William Lee Irwin III
2004-08-26 4:38 ` Martin J. Bligh
2004-08-26 4:42 ` Roland Dreier
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