[PATCH] make Linux bootable on ARM again
Russell King - ARM Linux
linux at arm.linux.org.uk
Fri Sep 25 16:34:17 EDT 2009
On Fri, Sep 25, 2009 at 04:28:02PM -0400, Nicolas Pitre wrote:
> Commit 200b812d00 "Clear the exclusive monitor when returning from an
> exception" broke the vast majority of ARM systems in the wild which are
> still pre ARMv6. The kernel is crashing on the first occurrence of an
> exception due to the removal of the actual return instruction for them.
> Let's add it back.
Catalin, can you please test your changes more thoroughly in future
please?
>
> Signed-off-by: Nicolas Pitre <nico at marvell.com>
> ---
>
> diff --git a/arch/arm/kernel/entry-header.S b/arch/arm/kernel/entry-header.S
> index e17e3c3..ac34c0d 100644
> --- a/arch/arm/kernel/entry-header.S
> +++ b/arch/arm/kernel/entry-header.S
> @@ -83,6 +83,8 @@
> ldr r0, [sp]
> strex r1, r2, [sp] @ clear the exclusive monitor
> ldmib sp, {r1 - pc}^ @ load r1 - pc, cpsr
> +#else
> + ldmia sp, {r0 - pc}^ @ load r0 - pc, cpsr
> #endif
> .endm
>
>
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