From: Andrew Morton <akpm@linux-foundation.org>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: 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>,
Russell King <linux@arm.linux.org.uk>,
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: Tue, 21 Feb 2012 16:18:02 -0800 [thread overview]
Message-ID: <20120221161802.f6a28085.akpm@linux-foundation.org> (raw)
In-Reply-To: <1329507036-24362-15-git-send-email-m.szyprowski@samsung.com>
On Fri, 17 Feb 2012 20:30:34 +0100
Marek Szyprowski <m.szyprowski@samsung.com> wrote:
> This patch adds support for CMA to dma-mapping subsystem for x86
> architecture that uses common pci-dma/pci-nommu implementation. This
> allows to test CMA on KVM/QEMU and a lot of common x86 boxes.
>
> ...
>
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -31,6 +31,7 @@ config X86
> select ARCH_WANT_OPTIONAL_GPIOLIB
> select ARCH_WANT_FRAME_POINTERS
> select HAVE_DMA_ATTRS
> + select HAVE_DMA_CONTIGUOUS if !SWIOTLB
> select HAVE_KRETPROBES
> select HAVE_OPTPROBES
> select HAVE_FTRACE_MCOUNT_RECORD
I don't think it's compilable at all for x86_64, because that platform
selects SWIOTLB.
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.
The patchset collides pretty seriously with pending dma api changes and
pending arm changes in linux-next, so I didn't apply anything. This
will all need to be looked at, please.
I'll make do with reading the patches for now ;)
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next prev parent reply other threads:[~2012-02-22 0:18 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 [this message]
2012-02-22 9:09 ` Russell King - ARM Linux
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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