From: Max Filippov <jcmvbkbc@gmail.com>
To: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <peterz@infradead.org>,
Chris Zankel <chris@zankel.net>,
Christoph Lameter <cl@linux-foundation.org>,
Pekka Enberg <penberg@kernel.org>, Matt Mackall <mpm@selenic.com>,
LKML <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Linux-Arch <linux-arch@vger.kernel.org>,
"linux-xtensa@linux-xtensa.org" <linux-xtensa@linux-xtensa.org>
Subject: Re: [PATCHv2 2/2] xtensa: use buddy allocator for PTE table
Date: Wed, 16 Oct 2013 00:44:03 +0400 [thread overview]
Message-ID: <CAMo8Bf+vAe3q+jJ6qv_ZqGZO=-3h40AHhZ==AbKfYV76wbn79Q@mail.gmail.com> (raw)
In-Reply-To: <20131014154403.562B2E0090@blue.fi.intel.com>
On Mon, Oct 14, 2013 at 7:44 PM, Kirill A. Shutemov
<kirill.shutemov@linux.intel.com> wrote:
> Corrected patch below.
>
> From 0ba2ac687321f5ad7bac5f5c141da5b65b957fdc Mon Sep 17 00:00:00 2001
> From: "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>
> Date: Mon, 14 Oct 2013 13:38:21 +0300
> Subject: [PATCHv3] xtensa: use buddy allocator for PTE table
>
> At the moment xtensa uses slab allocator for PTE table. It doesn't work
> with enabled split page table lock: slab uses page->slab_cache and
> page->first_page for its pages. These fields share stroage with
> page->ptl.
>
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
> Cc: Chris Zankel <chris@zankel.net>
> Cc: Max Filippov <jcmvbkbc@gmail.com>
> ---
> v3:
> - return correct value from pte_alloc_one_kernel();
> v2:
> - add missed return in pte_alloc_one_kernel();
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
--
Thanks.
-- Max
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prev parent reply other threads:[~2013-10-15 20:44 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-14 14:32 [PATCHv2 1/2] mm: try to detect that page->ptl is in use Kirill A. Shutemov
2013-10-14 14:32 ` [PATCHv2 2/2] xtensa: use buddy allocator for PTE table Kirill A. Shutemov
2013-10-14 15:19 ` Max Filippov
2013-10-14 15:44 ` Kirill A. Shutemov
2013-10-15 20:44 ` Max Filippov [this message]
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