From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Zach Pfeffer <zpfeffer@codeaurora.org>
Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>,
ebiederm@xmission.com, linux-arch@vger.kernel.org,
dwalker@codeaurora.org, mel@csn.ul.ie,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, andi@firstfloor.org,
linux-omap@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: Re: [RFC 1/3 v3] mm: iommu: An API to unify IOMMU, CPU and device memory management
Date: Thu, 22 Jul 2010 08:39:17 +0100 [thread overview]
Message-ID: <20100722073917.GC6802@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <20100722043034.GC22559@codeaurora.org>
On Wed, Jul 21, 2010 at 09:30:34PM -0700, Zach Pfeffer wrote:
> This goes to the nub of the issue. We need a lot of 1 MB physically
> contiguous chunks. The system is going to fragment and we'll never get
> our 12 1 MB chunks that we'll need, since the DMA API allocator uses
> the system pool it will never succeed.
By the "DMA API allocator" I assume you mean the coherent DMA interface,
The DMA coherent API and DMA streaming APIs are two separate sub-interfaces
of the DMA API and are not dependent on each other.
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next prev parent reply other threads:[~2010-07-22 7:40 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-03 5:38 [RFC 1/3 v3] mm: iommu: An API to unify IOMMU, CPU and device memory management Zach Pfeffer
2010-07-03 19:06 ` Eric W. Biederman
2010-07-07 22:44 ` Zach Pfeffer
2010-07-07 23:07 ` Russell King - ARM Linux
2010-07-08 23:59 ` Zach Pfeffer
2010-07-12 1:25 ` FUJITA Tomonori
2010-07-13 5:57 ` Zach Pfeffer
2010-07-13 6:03 ` FUJITA Tomonori
2010-07-13 12:14 ` Zach Pfeffer
2010-07-14 1:59 ` FUJITA Tomonori
2010-07-14 20:11 ` Zach Pfeffer
2010-07-14 22:05 ` Russell King - ARM Linux
2010-07-15 1:29 ` Zach Pfeffer
2010-07-15 1:47 ` Eric W. Biederman
2010-07-15 5:40 ` Zach Pfeffer
2010-07-15 5:35 ` Zach Pfeffer
2010-07-15 8:55 ` Russell King - ARM Linux
2010-07-16 0:48 ` Tim HRM
2010-07-16 7:58 ` Russell King - ARM Linux
2010-07-17 0:01 ` Larry Bassel
2010-07-19 9:21 ` Tim HRM
2010-07-21 0:44 ` Zach Pfeffer
2010-07-21 1:44 ` Timothy Meade
2010-07-22 4:06 ` Zach Pfeffer
2010-07-19 17:55 ` Michael Bohan
2010-07-19 18:40 ` Russell King - ARM Linux
2010-07-20 22:02 ` stepanm
2010-07-20 22:29 ` Russell King - ARM Linux
2010-07-21 5:49 ` Shilimkar, Santosh
2010-07-21 7:28 ` Russell King - ARM Linux
2010-07-21 7:45 ` Shilimkar, Santosh
2010-07-21 18:04 ` stepanm
2010-07-20 20:45 ` Zach Pfeffer
2010-07-20 20:54 ` Russell King - ARM Linux
2010-07-20 21:56 ` Zach Pfeffer
2010-07-19 6:52 ` Zach Pfeffer
2010-07-19 7:44 ` Eric W. Biederman
2010-07-22 4:25 ` Zach Pfeffer
2010-07-22 7:34 ` Russell King - ARM Linux
2010-07-22 16:25 ` Zach Pfeffer
2010-07-14 23:07 ` FUJITA Tomonori
2010-07-15 1:41 ` Zach Pfeffer
2010-07-19 8:22 ` Russell King - ARM Linux
2010-07-20 10:09 ` FUJITA Tomonori
2010-07-20 22:20 ` Zach Pfeffer
2010-07-21 1:44 ` FUJITA Tomonori
2010-07-22 4:30 ` Zach Pfeffer
2010-07-22 4:43 ` FUJITA Tomonori
2010-07-22 16:44 ` Zach Pfeffer
2010-07-22 7:39 ` Russell King - ARM Linux [this message]
2010-07-22 16:28 ` Zach Pfeffer
-- strict thread matches above, loose matches on Subject: below --
2010-07-06 15:42 Zach Pfeffer
2010-07-21 5:18 stepanm
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