Skip site navigation (1)Skip section navigation (2)
Date:      Sun, 12 Jul 1998 16:08:14 +0100 (BST)
From:      Doug Rabson <dfr@nlsystems.com>
To:        David Greenman <dg@root.com>
Cc:        Stefan Eggers <seggers@semyam.dinoco.de>, freebsd-hackers@FreeBSD.ORG
Subject:   Re: Page size flexibility in FreeBSD VM? 
Message-ID:  <Pine.BSF.3.95q.980712160622.342E-100000@herring.nlsystems.com>
In-Reply-To: <199807121336.GAA07869@implode.root.com>

next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, 12 Jul 1998, David Greenman wrote:

> >While reading the VM source I was wondering about how flexible it
> >shall be with regard to the page sizes used.  Is the goal just to
> >support 4k pages and if that works it is good enough or shall it be
> >more flexible if one wishes to use smaller or larger pages?
> >
> >The actual mapping in pmap.c of course has to cope with hardware
> >restrictions.  My questions is just concerned with the machine
> >independent part.
> 
>    The goal is to be flexible enough to support our supported hardware
> platforms. Right now, that would be Intel x86 (4K) and Alpha (8K) in the
> future.

To add to that, I only found one minor bug in the machine-independant
parts of the kernel that was caused by the different page size of the
alpha platform.  I would not expect to see any problems with page sizes
other than 4k/8k, within reason.

--
Doug Rabson				Mail:  dfr@nlsystems.com
Nonlinear Systems Ltd.			Phone: +44 181 951 1891
					Fax:   +44 181 381 1039


To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message



Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.3.95q.980712160622.342E-100000>