From: Ingo Molnar <mingo@chiara.csoma.elte.hu>
To: Kanoj Sarcar <kanoj@google.engr.sgi.com>
Cc: Rik van Riel <riel@nl.linux.org>,
jgarzik@mandrakesoft.com, alan@lxorguk.ukuu.org.uk,
linux-kernel@vger.rutgers.edu, linux-mm@kvack.org
Subject: Re: Getting big areas of memory, in 2.3.x?
Date: Fri, 10 Dec 1999 00:21:18 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.10.9912100018160.11167-100000@chiara.csoma.elte.hu> (raw)
In-Reply-To: <199912092054.MAA57205@google.engr.sgi.com>
On Thu, 9 Dec 1999, Kanoj Sarcar wrote:
> Well, at least in 2.3, kernel data (and page caches) are below 1G,
> which means there's a lot of memory possible out there with
> references only from user memory. Shm page references are
> revokable too. [...]
we already kindof replace pages, see replace_with_highmem(). Reverse ptes
do help, but are not a necessity to get this. Neither reverse ptes, nor
any other method guarantees that a large amount of continuous RAM can be
allocated. Only boot-time allocation can be guaranteed.
-- mingo
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next prev parent reply other threads:[~1999-12-09 23:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-12-09 1:03 Jeff Garzik
1999-12-09 2:28 ` Alan Cox
1999-12-09 2:45 ` Jeff Garzik
1999-12-09 5:22 ` Oliver Xymoron
1999-12-09 12:25 ` Ingo Molnar
1999-12-09 20:24 ` Jeff Garzik
1999-12-09 20:31 ` Kanoj Sarcar
1999-12-09 20:39 ` Rik van Riel
1999-12-09 20:54 ` Kanoj Sarcar
1999-12-09 23:21 ` Ingo Molnar [this message]
1999-12-09 22:27 ` Kanoj Sarcar
1999-12-09 23:16 ` Ingo Molnar
1999-12-09 23:09 ` Benjamin C.R. LaHaise
1999-12-10 0:44 ` Ingo Molnar
1999-12-10 0:18 ` William J. Earl
1999-12-11 19:56 ` Stephen C. Tweedie
1999-12-10 12:21 ` Rik van Riel
1999-12-10 13:42 ` Ingo Molnar
1999-12-10 18:04 ` William J. Earl
1999-12-09 20:50 ` William J. Earl
1999-12-09 23:15 ` Ingo Molnar
1999-12-09 22:13 ` William J. Earl
1999-12-09 22:26 ` Alan Cox
1999-12-09 23:42 ` William J. Earl
1999-12-09 23:50 ` Alan Cox
1999-12-10 0:30 ` William J. Earl
1999-12-10 0:37 ` Alan Cox
1999-12-10 4:19 ` Oliver Xymoron
1999-12-10 10:14 ` Thomas Sailer
1999-12-09 23:24 ` Ingo Molnar
1999-12-09 22:33 ` Jeff Garzik
1999-12-09 23:32 ` Rogier Wolff
1999-12-09 23:44 ` JF Martinez
1999-12-10 0:52 ` Ingo Molnar
1999-12-09 23:46 ` Andi Kleen
1999-12-10 13:52 ` Stephen C. Tweedie
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