ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type
authorTony Lindgren <tony@atomide.com>
Tue, 26 Oct 2010 18:52:21 +0000 (19:52 +0100)
committerRussell King <rmk+kernel@arm.linux.org.uk>
Wed, 27 Oct 2010 20:40:29 +0000 (21:40 +0100)
commit88d927e94805ebeec11ec7687df7789b954e334e
tree972ffd458c87a0f30b05d0648a33e24920fdb63e
parentd463f3633da7307c4162c4b45e0a94bb7fab44d3
ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type

Commit 5085f3ff458521045f7e43da62b8c30ea7df2e82 added better support for
CONFIG_HOTPLUG_CPU by keeping proc_info around. However, depending on
the Kconfig options selected, this can make the booting fail mysteriously
early on.

Turns out a data abort can happen in __lookup_processor in ldmia r5 {r3, r4}.
When it happens the address loaded to r5 is not aligned. Fix the problem by
aligning proc_info.

Reported-by: Anand Gadiyar <gadiyar@ti.com>
Tested-by: Anand Gadiyar <gadiyar@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
arch/arm/kernel/vmlinux.lds.S