[PATCH -V7 01/10] powerpc/THP: Double the PMD table size for THP

David Gibson dwg at au1.ibm.com
Fri May 3 13:21:36 EST 2013


On Mon, Apr 29, 2013 at 01:21:42AM +0530, Aneesh Kumar K.V wrote:
> From: "Aneesh Kumar K.V" <aneesh.kumar at linux.vnet.ibm.com>
> 
> THP code does PTE page allocation along with large page request and deposit them
> for later use. This is to ensure that we won't have any failures when we split
> hugepages to regular pages.
> 
> On powerpc we want to use the deposited PTE page for storing hash pte slot and
> secondary bit information for the HPTEs. We use the second half
> of the pmd table to save the deposted PTE page.
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar at linux.vnet.ibm.com>

So far so good.

Reviewed-by: David Gibson <david at gibson.dropbear.id.au>

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson
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