From: Arjan van de Ven <arjanv@redhat.com>
To: Karl Vogel <karl.vogel@seagha.com>
Cc: "'linux-kernel@vger.kernel.org'" <linux-kernel@vger.kernel.org>
Subject: Re: fast_copy_page sections?!
Date: 20 Jun 2003 11:10:01 +0200 [thread overview]
Message-ID: <1056100201.1721.3.camel@laptop.fenrus.com> (raw)
In-Reply-To: <6DED3619289CD311BCEB00508B8E1336011774BD@nt-server2.antwerp.seagha.com>
[-- Attachment #1: Type: text/plain, Size: 434 bytes --]
On Fri, 2003-06-20 at 10:38, Karl Vogel wrote:
> In arch/i386/lib/mmx.c there is a function fast_copy_page() using some
> crafty asm statements. However I don't quite understand the part with the
> fixup sections?!
basically, if your cpu doesn't do prefetch, it will fault. The section
stuff adds an exception handler for this fault that zeroes out the
prefetch code so that next time there no longer is a prefetch() there.
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2003-06-20 8:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-06-20 8:38 Karl Vogel
2003-06-20 9:10 ` Arjan van de Ven [this message]
2003-06-20 9:27 Karl Vogel
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=1056100201.1721.3.camel@laptop.fenrus.com \
--to=arjanv@redhat.com \
--cc=karl.vogel@seagha.com \
--cc=linux-kernel@vger.kernel.org \
/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
all inboxes | Powered by JetHome®