Subject: [PATCH RESEND v2 1/1] ARM Feroceon: fix kexec by setting outer_cache.inv_all

From: [email-masked] (Elijah Ragozin)
Date: Wed, 10 Apr 2013 21:42:12 +0300

On 10.04.2013 19:48, Jason Cooper wrote:
> On Mon, Apr 08, 2013 at 10:34:07PM +0300, Elijah Ragozin wrote:
>> On Feroceon the L2 cache becomes non-coherent with the CPU
>> when the L1 caches are disabled. Thus the L2 needs to be invalidated
>> after both L1 caches are disabled.
>>
>> On kexec before the starting the code for relocation the kernel,
>> the L1 caches are disabled in cpu_froc_fin (cpu_v7_proc_fin for Feroceon),
>> but after L2 cache is never invalidated, because inv_all is not set
>> in cache-feroceon-l2.c.
>> So kernel relocation and decompression may has (and usually has) errors.
>> Setting the function enables L2 invalidation and fixes the issue.
>>
>> Signed-off-by: Illia Ragozin <[email-masked]>
>> ---
>>   arch/arm/mm/cache-feroceon-l2.c | 1 +
>>   1 file changed, 1 insertion(+)
> fwiw,
>
> Acked-by: Jason Cooper <[email-masked]>
>
> Please put this in Russell King's patch tracker so he can pull it in.
>
> thx,
>
> Jason.
>

Jason,

thank you for reviewing and acking,
I just put the patch to the Russell King's patch tracker.

-- 
Best Regards,
Illia Ragozin.