From mboxrd@z Thu Jan 1 00:00:00 1970 From: plagnioj@jcrosoft.com (Jean-Christophe PLAGNIOL-VILLARD) Date: Fri, 4 May 2012 17:39:17 +0200 Subject: [RFC] Remove support for ARMv3 ARM610 and ARM710 CPUs In-Reply-To: <20120504095645.GD26481@n2100.arm.linux.org.uk> References: <20120504095645.GD26481@n2100.arm.linux.org.uk> Message-ID: <20120504153917.GF7788@game.jcrosoft.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 10:56 Fri 04 May , Russell King - ARM Linux wrote: > This patch removes support for ARMv3 CPUs, which haven't worked properly > for quite some time (see the FIXME comment in arch/arm/mm/fault.c). The > only V3 parts left is the cache model for ARMv3, which is needed for some > odd reason by ARM740T CPUs, and being able to build with -march=armv3, > which is required for the RiscPC platform due to its bus structure. > > What this patch shows is how well abstracted the ARMv3 support is. > Apart from removing the multi-support selection conditionals in the > glue-*.h and similar files, and the ARM710 hack in entry-common.S, > ARMv3 support does not affect any other core code files. That flies > directly in the face of people who whinge and moan about ARMv3 support > being painful in the kernel; if it's soo well abstracted then it isn't > being a problem. > > So, after this commit, the only ARMv3 specific code left is > arch/arm/mm/cache-v3.S and its selection in asm/glue-cache.h. > > Irrespective of the whingers, I think this is something we should do, > because it has been broken at runtime for quite some time and no one > has shown any interest in it. > > Signed-off-by: Russell King as will my oldest boards have a ARMv4 Acked-by: Jean-Christophe PLAGNIOL-VILLARD Best Regards, J.