From: Marek Szyprowski <m.szyprowski@samsung.com>
To: "'cp.zou'" <cpzou@ingenic.cn>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
"'Michal Nazarewicz'" <mina86@mina86.com>,
"'Kyungmin Park'" <kyungmin.park@samsung.com>,
"'Andrew Morton'" <akpm@linux-foundation.org>,
"'Mel Gorman'" <mel@csn.ul.ie>
Subject: RE: Contiguous Memory Allocator on HIGHMEM
Date: Tue, 07 Feb 2012 10:48:48 +0100 [thread overview]
Message-ID: <003601cce57d$b0df2af0$129d80d0$%szyprowski@samsung.com> (raw)
In-Reply-To: <4F30E97F.9000409@ingenic.cn>
Hello,
On Tuesday, February 07, 2012 10:06 AM cp.zou wrote:
> Hello everyone!
>
> I'm recently learning CMA, and I want to implement support for
> contiguous memory areas placed in HIGHMEM zone,do you have any suggestions?
CMA memory management core (migration and allocation of pages) should support
areas placed in HIGHMEM without any additional works. The main limitation is
in the DMA-mapping framework. Right now it makes certain assumptions about page
mappings to simplify allocation process. You need to add support for dynamic
mappings there.
Best regards
--
Marek Szyprowski
Samsung Poland R&D Center
prev parent reply other threads:[~2012-02-07 9:48 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-03 12:18 [PATCHv20 00/15] Contiguous Memory Allocator Marek Szyprowski
2012-02-03 12:18 ` [PATCH 01/15] mm: page_alloc: remove trailing whitespace Marek Szyprowski
2012-02-03 12:18 ` [PATCH 02/15] mm: compaction: introduce isolate_migratepages_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 03/15] mm: compaction: introduce map_pages() Marek Szyprowski
2012-02-03 13:30 ` Mel Gorman
2012-02-03 12:18 ` [PATCH 04/15] mm: compaction: introduce isolate_freepages_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 05/15] mm: compaction: export some of the functions Marek Szyprowski
2012-02-05 7:40 ` Hillf Danton
2012-02-05 14:34 ` Michal Nazarewicz
2012-02-06 12:46 ` Hillf Danton
2012-02-03 12:18 ` [PATCH 06/15] mm: page_alloc: introduce alloc_contig_range() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 07/15] mm: page_alloc: change fallbacks array handling Marek Szyprowski
2012-02-03 12:18 ` [PATCH 08/15] mm: mmzone: MIGRATE_CMA migration type added Marek Szyprowski
2012-02-03 13:53 ` Mel Gorman
2012-02-03 14:19 ` Hillf Danton
2012-02-03 15:50 ` Michal Nazarewicz
2012-02-04 9:09 ` Hillf Danton
2012-02-05 14:37 ` Michal Nazarewicz
2012-02-03 12:18 ` [PATCH 09/15] mm: page_isolation: MIGRATE_CMA isolation functions added Marek Szyprowski
2012-02-03 12:18 ` [PATCH 10/15] mm: extract reclaim code from __alloc_pages_direct_reclaim() Marek Szyprowski
2012-02-03 12:18 ` [PATCH 11/15] mm: trigger page reclaim in alloc_contig_range() to stabilize watermarks Marek Szyprowski
2012-02-03 14:04 ` Mel Gorman
2012-02-08 2:04 ` [Linaro-mm-sig] " sandeep patil
2012-02-08 9:21 ` Michal Nazarewicz
2012-02-08 19:26 ` sandeep patil
2012-02-08 15:14 ` Marek Szyprowski
2012-02-10 11:19 ` Mel Gorman
2012-02-10 15:36 ` Marek Szyprowski
2012-02-03 12:18 ` [PATCH 12/15] drivers: add Contiguous Memory Allocator Marek Szyprowski
2012-02-05 4:25 ` Hillf Danton
2012-02-05 14:33 ` Michal Nazarewicz
2012-02-06 12:51 ` Hillf Danton
2012-02-03 12:18 ` [PATCH 13/15] X86: integrate CMA with DMA-mapping subsystem Marek Szyprowski
2012-02-03 12:18 ` [PATCH 14/15] ARM: " Marek Szyprowski
2012-02-03 12:18 ` [PATCH 15/15] ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device Marek Szyprowski
2012-02-03 14:09 ` [PATCHv20 00/15] Contiguous Memory Allocator Mel Gorman
2012-02-07 9:06 ` Contiguous Memory Allocator on HIGHMEM cp.zou
2012-02-07 9:48 ` Marek Szyprowski [this message]
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