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ARM: 6465/1: Fix data abort accessing proc_info from __lookup_processor_type

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Commit 5085f3ff45 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>
This commit is contained in:
Tony Lindgren 2010-10-26 19:52:21 +01:00 committed by Russell King
parent d463f3633d
commit 88d927e948
1 changed files with 1 additions and 0 deletions
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1
arch/arm/kernel/vmlinux.lds.S
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@ -113,6 +113,7 @@ SECTIONS
*(.rodata.*)
*(.glue_7)
*(.glue_7t)
. = ALIGN(4);
*(.got) /* Global offset table */
ARM_CPU_KEEP(PROC_INFO)
}