From: Andrew Morton <akpm@linux-foundation.org>
To: Marek Szyprowski <m.szyprowski@samsung.com>
Cc: linux-arm-kernel@lists.infradead.org, linux-mm@kvack.org,
linaro-mm-sig@lists.linaro.org,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Michal Nazarewicz <mina86@mina86.com>,
Joonsoo Kim <iamjoonsoo.kim@lge.com>
Subject: Re: [PATCH 0/2] ARM: Remove lowmem limit for default CMA region
Date: Tue, 26 Aug 2014 16:10:00 -0700 [thread overview]
Message-ID: <20140826161000.c760fadf0d7223372524d2ce@linux-foundation.org> (raw)
In-Reply-To: <1408610714-16204-1-git-send-email-m.szyprowski@samsung.com>
On Thu, 21 Aug 2014 10:45:12 +0200 Marek Szyprowski <m.szyprowski@samsung.com> wrote:
> Russell King recently noticed that limiting default CMA region only to
> low memory on ARM architecture causes serious memory management issues
> with machines having a lot of memory (which is mainly available as high
> memory). More information can be found the following thread:
> http://thread.gmane.org/gmane.linux.ports.arm.kernel/348441/
>
> Those two patches removes this limit letting kernel to put default CMA
> region into high memory when this is possible (there is enough high
> memory available and architecture specific DMA limit fits).
>
> This should solve strange OOM issues on systems with lots of RAM
> (i.e. >1GiB) and large (>256M) CMA area.
What do we think is the priority on these fixes? 3.17 or 3.18?
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prev parent reply other threads:[~2014-08-26 23:10 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-08-21 8:45 Marek Szyprowski
2014-08-21 8:45 ` [PATCH 1/2] mm: cma: adjust address limit to avoid hitting low/high memory boundary Marek Szyprowski
2014-08-24 13:34 ` Michal Nazarewicz
2014-08-21 8:45 ` [PATCH 2/2] ARM: mm: don't limit default CMA region only to low memory Marek Szyprowski
2014-08-21 9:26 ` Daniel Drake
2014-08-24 13:34 ` Michal Nazarewicz
2014-08-25 1:26 ` [PATCH 0/2] ARM: Remove lowmem limit for default CMA region Minchan Kim
2014-08-25 8:00 ` Marek Szyprowski
2014-08-25 8:18 ` Minchan Kim
2014-08-25 8:33 ` Marek Szyprowski
2014-08-26 2:43 ` Minchan Kim
2014-08-26 12:34 ` Marek Szyprowski
2014-08-27 0:36 ` Minchan Kim
2014-08-27 1:42 ` Joonsoo Kim
2014-08-27 2:57 ` Minchan Kim
2014-08-26 23:10 ` Andrew Morton [this message]
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