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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-media@vger.kernel.org, linux-mm@kvack.org,
	linaro-mm-sig@lists.linaro.org,
	Michal Nazarewicz <mina86@mina86.com>,
	Kyungmin Park <kyungmin.park@samsung.com>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
	Daniel Walker <dwalker@codeaurora.org>,
	Mel Gorman <mel@csn.ul.ie>, Arnd Bergmann <arnd@arndb.de>,
	Jesse Barker <jesse.barker@linaro.org>,
	Jonathan Corbet <corbet@lwn.net>,
	Shariq Hasnain <shariq.hasnain@linaro.org>,
	Chunsang Jeong <chunsang.jeong@linaro.org>,
	Dave Hansen <dave@linux.vnet.ibm.com>,
	Benjamin Gaignard <benjamin.gaignard@linaro.org>,
	Rob Clark <rob.clark@linaro.org>,
	Ohad Ben-Cohen <ohad@wizery.com>
Subject: Re: [PATCHv22 14/16] X86: integrate CMA with DMA-mapping subsystem
Date: Wed, 22 Feb 2012 09:09:30 +0000	[thread overview]
Message-ID: <20120222090930.GS22562@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20120221161802.f6a28085.akpm@linux-foundation.org>

On Tue, Feb 21, 2012 at 04:18:02PM -0800, Andrew Morton wrote:
> After a while I got it to compile for i386.  arm didn't go so well,
> partly because arm allmodconfig is presently horked (something to do
> with Kconfig not setting PHYS_OFFSET) and partly because arm defconfig
> doesn't permit CMA to be set.  Got bored, gave up.

That's not going to get fixed, unfortunately.  It requires us to find
some way to force various options to certain states on all*config
builds, because not surprisingly a value of 'y', 'm' or 'n' doesn't
work for integer or hex config options.

So the only way all*config can be used on ARM is with a seed config file
to force various options to particular states to ensure that we end up
with a sane configuration that avoids crap like that.

Alternatively, we need a way to tell kconfig that various options are to
be set in certain ways in the Kconfig files for all*config to avoid it
wanting values for hex or int options.

--
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  reply	other threads:[~2012-02-22  9:10 UTC|newest]

Thread overview: 24+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-02-17 19:30 [PATCHv22 00/16] Contiguous Memory Allocator Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 01/16] mm: page_alloc: remove trailing whitespace Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 02/16] mm: compaction: introduce isolate_migratepages_range() Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 03/16] mm: compaction: introduce map_pages() Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 04/16] mm: compaction: introduce isolate_freepages_range() Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 05/16] mm: compaction: export some of the functions Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 06/16] mm: page_alloc: introduce alloc_contig_range() Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 07/16] mm: page_alloc: change fallbacks array handling Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 08/16] mm: mmzone: MIGRATE_CMA migration type added Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 09/16] mm: page_isolation: MIGRATE_CMA isolation functions added Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 10/16] mm: Serialize access to min_free_kbytes Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 11/16] mm: extract reclaim code from __alloc_pages_direct_reclaim() Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 12/16] mm: trigger page reclaim in alloc_contig_range() to stabilise watermarks Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 13/16] drivers: add Contiguous Memory Allocator Marek Szyprowski
2012-02-21 21:30   ` Aaro Koskinen
2012-02-22 16:26     ` Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 14/16] X86: integrate CMA with DMA-mapping subsystem Marek Szyprowski
2012-02-22  0:18   ` Andrew Morton
2012-02-22  9:09     ` Russell King - ARM Linux [this message]
2012-02-22 13:36       ` Arnd Bergmann
2012-02-22 16:36     ` Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 15/16] ARM: " Marek Szyprowski
2012-02-17 19:30 ` [PATCHv22 16/16] ARM: Samsung: use CMA for 2 memory banks for s5p-mfc device Marek Szyprowski
2012-02-18  0:23 ` [PATCHv22 00/16] Contiguous Memory Allocator Anca Emanuel

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