From: ebiederm@xmission.com (Eric W. Biederman)
To: swsnyder@home.com
Cc: Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: MTRR/DRM questions
Date: 17 Aug 2001 12:44:21 -0600 [thread overview]
Message-ID: <m1wv42o7ay.fsf@frodo.biederman.org> (raw)
In-Reply-To: <01081712301804.01709@mercury.snydernet.lan>
In-Reply-To: <01081712301804.01709@mercury.snydernet.lan>
Steve Snyder <swsnyder@home.com> writes:
> Hello.
>
> 1. Is there any benefit to enabling MTRR support for systems (RedHat v7.1 /
> kernel v2.4.9) that will never run a graphical user interface? Usually I
> read of MTRR-related matters in the context of GUI acceleration. Would my
> text-only system benefit from MTRR support?
Having the kernel know how to manipulate MTRR's is useful for things
like high performance I/O cards. Video is just one. However you definentily
need MTRR's setting it is o.k. to do write back caching on your memory.
> 2. The kernel doc says the DRM support is avalable for the Intel 440LX
> chipset, but no mention is made of the 440EX. Given that the 440EX is
> kinda-sorta similar to the 440LX, can I assume that the EX chipset is also
> supported?
I haven't looked. The fact that they are close probably means it is simple
to convert the code if the code doesn't support your chip.
Eric
prev parent reply other threads:[~2001-08-17 18:51 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-08-17 17:30 MTRR/DRM questions Steve Snyder
2001-08-17 18:44 ` Eric W. Biederman [this message]
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