linux-kernel - RE: Contiguous Memory Allocator on HIGHMEM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-id: <003601cce57d$b0df2af0$129d80d0$%szyprowski@samsung.com>
Date:	Tue, 07 Feb 2012 10:48:48 +0100
From:	Marek Szyprowski <m.szyprowski@...sung.com>
To:	"'cp.zou'" <cpzou@...enic.cn>
Cc:	linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	'Michal Nazarewicz' <mina86@...a86.com>,
	'Kyungmin Park' <kyungmin.park@...sung.com>,
	'Andrew Morton' <akpm@...ux-foundation.org>,
	'Mel Gorman' <mel@....ul.ie>
Subject: RE: Contiguous Memory Allocator on HIGHMEM

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


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/