linux-kernel - Re: [PATCH 1/2] mm: Make vm_get_page

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Message-ID: <20160208081642.GC9075@node.shutemov.name>
Date:	Mon, 8 Feb 2016 10:16:42 +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, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] mm: Make vm_get_page_prot arch specific.

On Mon, Feb 08, 2016 at 12:10:59PM +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 to dynamically switch between different protection map. Hence
> override vm_get_page_prot instead of using arch_vm_get_page_prot. We
> also drop arch_vm_get_page_prot since only powerpc used it.
> 
> [1] http://ibm.biz/power-isa3 (Needs registration).
> 
> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@...ux.vnet.ibm.com>

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

-- 
 Kirill A. Shutemov