From: "ron minnich" <rminnich@gmail.com>
To: "Fans of the OS Plan 9 from Bell Labs" <9fans@cse.psu.edu>
Subject: Re: [9fans] man is really slow on a terminal
Date: Wed, 16 Jan 2008 15:28:08 -0800 [thread overview]
Message-ID: <13426df10801161528j4f78ddbas890cbeb449ba9226@mail.gmail.com> (raw)
In-Reply-To: <e8af4fc09d08b3e0896b8ced84b8610c@quanstro.net>
On Jan 16, 2008 3:14 PM, erik quanstrom <quanstro@quanstro.net> wrote:
> is there a problem with the generality of this patch?
Note that the patch is saved, and I'm guessing there is a reason: it's
arguably gross to expose the MTRRs to the world. I was thinking about
this. It seems to me that MTRRs could really be managed in mmu.c (but
it's a headache). You would need to know when a device mapped physical
memory that it ought to be cached, and set the MTRRs up properly.
>
> it would also be nice if the kernel kept it's own copy
> of the frame buffer. nvidia^wmodern graphics cards are just not
> designed to be read from.
I know that is true on AGP, but had understood it to be less true on
PCIe. Is it really so bad on PCIe now?
thanks
ron
next prev parent reply other threads:[~2008-01-16 23:28 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-16 18:19 john
2008-01-16 18:52 ` ron minnich
2008-01-16 19:05 ` erik quanstrom
2008-01-16 23:08 ` ron minnich
2008-01-16 23:14 ` erik quanstrom
2008-01-16 23:28 ` ron minnich [this message]
2008-01-16 23:42 ` erik quanstrom
2008-01-17 0:30 ` ron minnich
2008-01-17 0:59 ` erik quanstrom
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=13426df10801161528j4f78ddbas890cbeb449ba9226@mail.gmail.com \
--to=rminnich@gmail.com \
--cc=9fans@cse.psu.edu \
/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;
as well as URLs for NNTP newsgroup(s).