From: Jamie Lokier <lk@tantalophile.demon.co.uk>
To: James Simmons <jsimmons@linux-fbdev.org>
Cc: Pavel Machek <pavel@suse.cz>, Russell King <rmk@arm.linux.org.uk>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux Fbdev development list
<linux-fbdev-devel@lists.sourceforge.net>
Subject: Re: fbcon slowness [was NTP on 2.4.2?]
Date: Sat, 31 Mar 2001 02:39:52 +0200 [thread overview]
Message-ID: <20010331023952.C6784@pcep-jamie.cern.ch> (raw)
In-Reply-To: <Pine.LNX.4.31.0103281948200.1748-100000@linux.local>
In-Reply-To: <Pine.LNX.4.31.0103281948200.1748-100000@linux.local>; from jsimmons@linux-fbdev.org on Wed, Mar 28, 2001 at 07:54:25PM -0800
James Simmons wrote:
> Ug!!! This is getting bad. Give me some time. I plan on releasing a new
> vesafb using MMX to help speed up the drawing routines. It will help alot
> with the latency issues. I also know using ARM assembly we can greatly
> reduce the latency issues.
There is another issue with vesafb. It tries to use an MTRR, but this
fails for the 2.5MB region that is video RAM because 2.5MB is not a
power of two.
The console driver does not actually use 2.5MB. Does it make sense to
use an MTRR for the smaller power-of-two region?
-- Jamie
next prev parent reply other threads:[~2001-03-31 0:41 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-03-29 3:54 James Simmons
2001-03-31 0:37 ` Jamie Lokier
2001-03-31 0:53 ` Pavel Machek
2001-03-31 1:13 ` Jamie Lokier
2001-03-31 0:39 ` Jamie Lokier [this message]
2001-03-31 0:52 ` Pavel Machek
2001-03-31 3:49 James Simmons
2001-03-31 3:57 James Simmons
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