From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: David Woodhouse <dwmw2@infradead.org>
Cc: riel@conectiva.com.br, linux-mm@kvack.org,
linux-arm-kernel@lists.arm.linux.org.uk
Subject: Re: rmap for ARMV.
Date: Tue, 19 Feb 2002 16:14:12 +0000 [thread overview]
Message-ID: <20020219161412.B16613@flint.arm.linux.org.uk> (raw)
In-Reply-To: <22292.1014134494@redhat.com>; from dwmw2@infradead.org on Tue, Feb 19, 2002 at 04:01:34PM +0000
On Tue, Feb 19, 2002 at 04:01:34PM +0000, David Woodhouse wrote:
> ARM was fun because it has a slab cache with 2KiB objects for page tables,
> rather than allocating them a page at a time - so we couldn't just use
> page->{mapping,index} for each page as we do on other architectures.
When rmap gets merged into the 2.5 kernel series, I'll look at what
can be done to sort out the pte situation - we could re-jig the page
tables so a 'pgd' is 8 bytes per entry (made up of two hardware PTE
pointers), the second level page tables end up being 2K hardware + 2K
for Linux, which nicely maps to a page per PTE as viewed by Linux.
This should simplify this patch, as well as getting rid of the pte
slab.
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/
next prev parent reply other threads:[~2002-02-19 16:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-02-19 16:01 David Woodhouse
2002-02-19 16:14 ` Russell King - ARM Linux [this message]
2002-02-19 16:42 ` David Woodhouse
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20020219161412.B16613@flint.arm.linux.org.uk \
--to=linux@arm.linux.org.uk \
--cc=dwmw2@infradead.org \
--cc=linux-arm-kernel@lists.arm.linux.org.uk \
--cc=linux-mm@kvack.org \
--cc=riel@conectiva.com.br \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox