[PATCH] ARM: map_init_section flushes incorrect pmd

[Po-Yu Chuang]

On Wed, May 29, 2013 at 5:34 PM, Po-Yu Chuang <ratbert.chuang at gmail.com> wrote:
> Hi Will,
>
> On Wed, May 29, 2013 at 4:54 PM, Will Deacon <will.deacon at arm.com> wrote:
>> On Wed, May 29, 2013 at 03:14:58AM +0100, Po-Yu Chuang wrote:
>>> Will,
>>> I guess nobody noticed this because the MMU of later v7 processors
>>> fetches page table
>>> from D-cache. It even doesn't need to clean pmd to PoU.
>>
>> It does if it's UP. The walker is only guaranteed to read from L1 if you
>> have the multiprocessing extensions.
>
> Ya, I see.
>>
>> As for this function, looks like it's ok because it has precisely one
>> caller, so it might be worth prefixing it with some underscores to make it
>> clear that nobody else should be calling it!
>
> I am fine with that.
> Should I create a new patch?

Hi,

Does anyone have more comment about this?

Regards,
Po-Yu