From: dave.martin@linaro.org (Dave Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 0/3] ARM: iwmmxt/pj4 fixes for v7/Thumb-2
Date: Wed, 7 Sep 2011 16:59:15 +0100 [thread overview]
Message-ID: <1315411158-17479-1-git-send-email-dave.martin@linaro.org> (raw)
The iwmmxt and pj4 support code contains some code which isn't
compatible with Thumb-2 and looks possibly inappropriate for v7.
There is also an issue with Makefile rules causing iwmmxt.S to be
built for the wrong architecture.
This series attempts to fix those issues. However, I'm not totally
happy with it -- if someone with relevant boards and/or experience
can test or comment, that would be appreciated.
In particular, the current makefile rules are still not really
right. To avoid excessive pain and disruption, simpler but
somewhat incorrect changes are made in the Makefile, and iwmmxt.S
is changed for Thumb-2 kernels only. This may be adequete, but I
don't kave the required knowledge to be sure.
If someone with some platform knowledge can comment on whether it
appears valid to replace the old instruction sequences with ISBs,
that would be appreciated too. In this series I'm currently making
assumptions based on the core architecture.
Dave Martin (3):
ARM: iwmmxt: Fix Makefile rules for building iwmmxt for Thumb-2
ARM: iwmmxt: Port problematic iwmmxt support code to v7/Thumb-2
ARM: pxa/pj4: Port problematic pj4 support code to v7/Thumb-2
arch/arm/kernel/Makefile | 7 +++++++
arch/arm/kernel/iwmmxt.S | 9 +++++++++
arch/arm/kernel/pj4-cp0.c | 4 ++++
3 files changed, 20 insertions(+), 0 deletions(-)
-- 1.7.4.1
next reply other threads:[~2011-09-07 15:59 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-07 15:59 Dave Martin [this message]
2011-09-07 15:59 ` [RFC PATCH 1/3] ARM: iwmmxt: Fix Makefile rules for building iwmmxt for Thumb-2 Dave Martin
2011-09-07 16:10 ` Eric Miao
2011-09-07 17:18 ` Nicolas Pitre
2011-09-07 20:32 ` Arnd Bergmann
2011-09-08 8:53 ` Dave Martin
2011-09-07 15:59 ` [RFC PATCH 2/3] ARM: iwmmxt: Port problematic iwmmxt support code to v7/Thumb-2 Dave Martin
2011-09-07 16:13 ` Eric Miao
2011-09-07 20:35 ` Arnd Bergmann
2011-09-08 8:58 ` Dave Martin
2011-09-08 9:01 ` Russell King - ARM Linux
2011-09-08 11:33 ` Dave Martin
2011-09-08 14:40 ` Arnd Bergmann
2011-09-07 15:59 ` [RFC PATCH 3/3] ARM: pxa/pj4: Port problematic pj4 " Dave Martin
2011-09-07 16:18 ` Eric Miao
2011-09-07 20:27 ` Arnd Bergmann
2011-09-08 8:58 ` Haojian Zhuang
2011-09-08 11:10 ` Sergei Shtylyov
2011-09-08 11:35 ` Dave Martin
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