linux-kernel - Re: [PATCH V2] mm: Some arch may want to use HPAGE

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Message-ID: <20160209194206.GA22327@node.shutemov.name>
Date:	Tue, 9 Feb 2016 21:42:06 +0200
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	"Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>
Cc:	akpm@...ux-foundation.org, mpe@...erman.id.au,
	"Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V2] mm: Some arch may want to use HPAGE_PMD related
 values as variables

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@...ux.vnet.ibm.com>

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

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

-- 
 Kirill A. Shutemov