From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/3] ARM: iwmmxt: Fix Makefile rules for building iwmmxt for Thumb-2
Date: Thu, 8 Sep 2011 18:45:32 +0200 [thread overview]
Message-ID: <201109081845.33117.arnd@arndb.de> (raw)
In-Reply-To: <1315497854-13311-2-git-send-email-dave.martin@linaro.org>
On Thursday 08 September 2011, Dave Martin wrote:
> Because gcc/gas have no sane way to turn on individual CPU
> extensions from the command-line, iwmmxt.S was previously built
> with -mcpu=iwmmxt. Unfortunately, this also downgrades the CPU to
> v5, with the result that this file fails to build for a Thumb-2
> kernel.
>
> New versions of the tools support -march=<base arch>+iwmmxt, and it
> seems reasonable to require up-to-date tools when building in
> Thumb-2. So, this patch uses -march=armv7-a+iwmmxt for
> CONFIG_THUMB2_KERNEL=y.
>
> Signed-off-by: Dave Martin <dave.martin@linaro.org>
Ok. More complex than I would have liked, but this definitely does
the right thing in every case, as far as I can tell.
Acked-by: Arnd Bergmann <arnd@arndb.de>
next prev parent reply other threads:[~2011-09-08 16:45 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-08 16:04 [PATCH v2 0/3] ARM: iwmmxt/pj4 fixes for v7/Thumb-2 Dave Martin
2011-09-08 16:04 ` [PATCH v2 1/3] ARM: iwmmxt: Fix Makefile rules for building iwmmxt for Thumb-2 Dave Martin
2011-09-08 16:45 ` Arnd Bergmann [this message]
2011-09-08 17:14 ` Dave Martin
2011-09-08 17:09 ` Nicolas Pitre
2011-09-08 16:04 ` [PATCH v2 2/3] ARM: iwmmxt: Port problematic iwmmxt support code to v7/Thumb-2 Dave Martin
2011-09-08 16:45 ` Arnd Bergmann
2011-09-08 17:03 ` Eric Miao
2011-09-08 17:13 ` Jon Medhurst (Tixy)
2011-09-08 17:15 ` Eric Miao
2011-09-08 17:33 ` Nicolas Pitre
2011-09-08 17:20 ` Dave Martin
2011-09-08 17:32 ` Nicolas Pitre
2011-09-08 18:49 ` Eric Miao
2011-09-08 19:30 ` Nicolas Pitre
2011-09-09 9:55 ` Jon Medhurst (Tixy)
2011-09-09 13:21 ` Nicolas Pitre
2011-09-09 14:05 ` Jon Medhurst (Tixy)
2011-09-09 16:41 ` Dave Martin
2011-09-09 17:51 ` Nicolas Pitre
2011-09-12 14:37 ` Dave Martin
2011-09-12 14:43 ` Russell King - ARM Linux
2011-09-12 14:55 ` Nicolas Pitre
2011-09-12 16:22 ` Dave Martin
2011-09-08 16:04 ` [PATCH v2 3/3] ARM: pxa/pj4: Port problematic pj4 " Dave Martin
2011-09-08 16:44 ` Arnd Bergmann
2011-09-08 17:06 ` Eric Miao
2011-09-08 17:23 ` Dave Martin
2011-09-08 17:06 ` Nicolas Pitre
2011-09-08 17:06 ` Eric Miao
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