From: Matt Porter <mporter@kernel.crashing.org>
To: Dan Malek <dan@embeddededge.com>
Cc: Eugene Surovegin <ebs@ebshome.net>,
John Whitney <johnw@sands-edge.com>,
linuxppc-dev@lists.linuxppc.org
Subject: Re: Proposed changes to io.h
Date: Wed, 31 Mar 2004 10:30:21 -0700 [thread overview]
Message-ID: <20040331103021.C17284@home.com> (raw)
In-Reply-To: <406AF8B3.6010002@embeddededge.com>; from dan@embeddededge.com on Wed, Mar 31, 2004 at 11:58:27AM -0500
On Wed, Mar 31, 2004 at 11:58:27AM -0500, Dan Malek wrote:
>
> Eugene Surovegin wrote:
>
> > I wonder will it work on 4xx CPUs which don't have floating point unit?
>
> It won't work on anything, will it? Floating point isn't enabled for
> the kernel, unless I missed that update.
It will. The proposed changes turn on FP, save the scratch FP reg
context, and the restore everything (all under lock). Like was
mentioned, it's ugly but works. I know a few people doing this
(usually in custom MTD 64-bit access functions).
-Matt
** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2004-03-31 17:30 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-03-31 15:44 Proposed changes to io.h John Whitney
2004-03-31 16:44 ` Eugene Surovegin
2004-03-31 16:58 ` Dan Malek
2004-03-31 17:30 ` Matt Porter [this message]
2004-03-31 17:32 ` John Whitney
2004-03-31 17:40 ` Dan Malek
2004-03-31 17:03 ` Matt Porter
2004-03-31 19:57 ` John Whitney
2004-03-31 22:07 ` Matt Porter
2004-03-31 22:25 ` John Whitney
2004-03-31 22:52 ` Dan Malek
2004-04-01 5:30 ` Kumar Gala
2004-03-31 17:01 ` Matt Porter
2004-03-31 17:29 ` Dan Malek
2004-03-31 18:18 ` Christoph Hellwig
2004-03-31 18:40 ` John Whitney
2004-03-31 18:43 ` Christoph Hellwig
2004-03-31 18:50 ` John Whitney
2004-03-31 21:09 ` John Whitney
2004-03-31 21:49 ` Dan Malek
2004-03-31 21:52 ` Eugene Surovegin
2004-03-31 22:07 ` John Whitney
2004-04-01 2:52 ` Benjamin Herrenschmidt
[not found] ` <209F76E4-838B-11D8-9FF0-000A95A07384@sands-edge.com>
[not found] ` <1080790433.1433.59.camel@gaston>
[not found] ` <43B0E668-84BC-11D8-9FF0-000A95A07384@sands-edge.com>
2004-04-03 3:04 ` Benjamin Herrenschmidt
2004-04-03 3:40 ` John Whitney
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=20040331103021.C17284@home.com \
--to=mporter@kernel.crashing.org \
--cc=dan@embeddededge.com \
--cc=ebs@ebshome.net \
--cc=johnw@sands-edge.com \
--cc=linuxppc-dev@lists.linuxppc.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;
as well as URLs for NNTP newsgroup(s).