hash-table creation...

[sumedh tirodkar]

Thanks a lot...paging mechanism working successfully...

Regards,
Sumedh

On Sun, Feb 8, 2009 at 2:47 AM, Benjamin Herrenschmidt
<benh at kernel.crashing.org> wrote:
> On Sat, 2009-02-07 at 11:43 +0530, sumedh tirodkar wrote:
>> Hello,
>>
>> I wanted algorithm for creating hash tables used in paging mechanism..
>> In the manual that i read i got algorithm to convert Effective Address
>> to Real Address using these hash tables that are created..but i could
>> not find how these hash tables are created in first place using the
>> Real addresses.
>> Is there any document available for the same?
>
> There's one MMU hash table. It's allocated & cleared by the kernel
> during early boot or by the hypervisor and pointed to by the SDR1
> register.
>
> It's populated by code in arch/powerpc/mm/hash_low_64.S or
> hash_low_32.S, typically as the result of a hash miss exception.
>
> Ben.
>
>