Re: [PATCH V2] mm: Some arch may want to use HPAGE_PMD related values as variables

From: Kirill A. Shutemov
Date: Tue Feb 09 2016 - 14:42:14 EST


On Tue, Feb 09, 2016 at 09:41:44PM +0530, Aneesh Kumar K.V wrote:
> With next generation power processor, we are having a new mmu model
> [1] that require us to maintain a different linux page table format.
>
> Inorder to support both current and future ppc64 systems with a single
> kernel we need to make sure kernel can select between different page
> table format at runtime. With the new MMU (radix MMU) added, we will
> have two different pmd hugepage size 16MB for hash model and 2MB for
> Radix model. Hence make HPAGE_PMD related values as a variable.
>
> [1] http://ibm.biz/power-isa3 (Needs registration).
>
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@xxxxxxxxxxxxxxxxxx>

I guess it should have my signed-off-by ;)

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>

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Kirill A. Shutemov