From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: akpm@linux-foundation.org, mpe@ellerman.id.au,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm: Make vm_get_page_prot arch specific.
Date: Mon, 8 Feb 2016 10:16:42 +0200 [thread overview]
Message-ID: <20160208081642.GC9075@node.shutemov.name> (raw)
In-Reply-To: <1454913660-27031-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
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@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
--
Kirill A. Shutemov
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WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: akpm@linux-foundation.org, mpe@ellerman.id.au,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] mm: Make vm_get_page_prot arch specific.
Date: Mon, 8 Feb 2016 10:16:42 +0200 [thread overview]
Message-ID: <20160208081642.GC9075@node.shutemov.name> (raw)
In-Reply-To: <1454913660-27031-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
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@linux.vnet.ibm.com>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
--
Kirill A. Shutemov
next prev parent reply other threads:[~2016-02-08 8:16 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-02-08 6:40 [PATCH 1/2] mm: Make vm_get_page_prot arch specific Aneesh Kumar K.V
2016-02-08 6:40 ` Aneesh Kumar K.V
2016-02-08 6:41 ` [PATCH 2/2] mm: Some arch may want to use HPAGE_PMD related values as variables Aneesh Kumar K.V
2016-02-08 6:41 ` Aneesh Kumar K.V
2016-02-08 8:43 ` Kirill A. Shutemov
2016-02-08 8:43 ` Kirill A. Shutemov
2016-02-08 8:16 ` Kirill A. Shutemov [this message]
2016-02-08 8:16 ` [PATCH 1/2] mm: Make vm_get_page_prot arch specific Kirill A. Shutemov
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