Messages in this thread | | | Date | Thu, 22 Jul 2010 09:33:40 -0700 | From | Zach Pfeffer <> | Subject | Re: [RFC 3/3] mm: iommu: The Virtual Contiguous Memory Manager |
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On Thu, Jul 22, 2010 at 01:47:36PM +0900, FUJITA Tomonori wrote: > On Wed, 21 Jul 2010 20:50:26 -0700 > Zach Pfeffer <zpfeffer@codeaurora.org> wrote: > > > On Wed, Jul 14, 2010 at 10:59:43AM +0900, FUJITA Tomonori wrote: > > > On Tue, 13 Jul 2010 10:02:23 +0100 > > > > > > Zach Pfeffer said this new VCM infrastructure can be useful for > > > video4linux. However, I don't think we need 3,000-lines another > > > abstraction layer to solve video4linux's issue nicely. > > > > Its only 3000 lines because I haven't converted the code to use > > function pointers. > > The main point is adding a new abstraction that don't provide the huge > benefit.
I disagree. In its current form the API may not be appropriate for inclusion into the kernel, but it provides a common framework for handling a class of problems that have been solved many times in the kernel: large buffer management, IOMMU interoperation and fine grained mapping control.
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