Re: [PATCH 8/9] dspbridge: add map support for big buffers

From: FUJITA Tomonori
Date: Thu Aug 26 2010 - 02:55:31 EST


On Wed, 30 Jun 2010 19:20:59 -0500
Fernando Guzman Lugo <x0095840@xxxxxx> wrote:

> due to a restriction in scatter gather lists, it can
> not be created a list for a buffer bigger than 1MB.
> This patch is spliting big mappings into 1MB mappings.

I don't read the whole thread but the above description is incorrect.

Why can't you use scatter gather chaining? You can create a scatter
list for a buffer larger than 1MB.
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