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
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