From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: optimize memset_io()/memcpy_fromio()/memcpy_toio()
Date: Thu, 13 Jun 2013 14:47:35 +0200 [thread overview]
Message-ID: <2184363.o70cB30E6f@wuerfel> (raw)
In-Reply-To: <20130613110501.GZ18614@n2100.arm.linux.org.uk>
On Thursday 13 June 2013 12:05:02 Russell King - ARM Linux wrote:
> Yes, unfortunately it should be selectable by platform, though it needs
> to be done carefully. Some ARM platforms can't cope with full 32-bit
> accesses to MMIO.
>
> I don't think any of those intersect with the single zImage project, so
> those should be fine to have it always enabled - it's only the older
> platforms that might have issues.
Are those all StrongARM and XScale based platforms? If so, I definitely
don't expect them to go multiplatform.
Can we combine this with the existing CONFIG_NEED_MACH_IO_H?
Arnd
next prev parent reply other threads:[~2013-06-13 12:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-27 22:02 [PATCH] ARM: optimize memset_io()/memcpy_fromio()/memcpy_toio() Russell King
2012-09-28 4:17 ` Nicolas Pitre
2012-09-28 9:58 ` Will Deacon
2012-09-28 10:31 ` Russell King - ARM Linux
2012-09-28 10:42 ` Will Deacon
2012-09-28 10:44 ` Russell King - ARM Linux
2012-09-28 13:36 ` Arnd Bergmann
2012-09-28 14:13 ` Catalin Marinas
2012-09-28 14:29 ` Russell King - ARM Linux
2013-06-05 6:02 ` Dirk Behme
2013-06-11 18:16 ` Dirk Behme
2013-06-13 11:05 ` Russell King - ARM Linux
2013-06-13 12:47 ` Arnd Bergmann [this message]
2013-06-13 17:13 ` Russell King - ARM Linux
2013-06-23 6:46 ` Dirk Behme
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=2184363.o70cB30E6f@wuerfel \
--to=arnd@arndb.de \
--cc=linux-arm-kernel@lists.infradead.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