From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: Dave Jones <davej@redhat.com>
Cc: gboyce <gboyce@badbelly.com>, linux-kernel@vger.kernel.org
Subject: Re: IDE + CPU Scaling problem on Via EPIA systems
Date: Sun, 04 Dec 2005 16:22:03 +0000 [thread overview]
Message-ID: <1133713324.3168.3.camel@localhost> (raw)
In-Reply-To: <20051128063212.GA18775@redhat.com>
On Llu, 2005-11-28 at 01:32 -0500, Dave Jones wrote:
> On some variants of the VIA C3, we need to quiesce all DMA operations
> before we do a speed transition. We currently don't do that.
> I do have a patch from someone which adds support in the longhaul
> driver to wait for IDE transactions to stop, but to do it cleanly,
> we really need some callbacks into the IDE layer.
I was under the impression you could turn the IO/MEM enable on the root
bridge off momentarily to get the needed DMA pause safely ? Or does it
abort rather than retry at that point ?
next prev parent reply other threads:[~2005-12-06 15:35 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-11-28 5:02 IDE + CPU Scaling problem on Via EPIA systems gboyce
2005-11-28 6:32 ` Dave Jones
2005-12-04 16:22 ` Alan Cox [this message]
2005-12-06 17:05 ` Dave Jones
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=1133713324.3168.3.camel@localhost \
--to=alan@lxorguk.ukuu.org.uk \
--cc=davej@redhat.com \
--cc=gboyce@badbelly.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 an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.