linux-kernel - Re: [RFC 2.6.19 1/1] fbdev,mm: hecuba/E-Ink fbdev driver v2

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Message-ID: <cda58cb80612220157q5433c346pccd06b8b7cbaadba@mail.gmail.com>
Date:	Fri, 22 Dec 2006 10:57:31 +0100
From:	"Franck Bui-Huu" <vagabon.xyz@...il.com>
To:	"Jaya Kumar" <jayakumar.lkml@...il.com>
Cc:	linux-fbdev-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [RFC 2.6.19 1/1] fbdev,mm: hecuba/E-Ink fbdev driver v2

On 12/20/06, Franck Bui-Huu <vagabon.xyz@...il.com> wrote:

>     - when mmaping your frame buffer , be sure that the virtual
>       address returned by mmap() to the application shares the
>       same cache lines than the ones the kernel
>       is using.

Well thinking more about it, this wouldn't work for all cache types.
For example, if your cache is not a direct maped one, this workaround
won't work. So this is definitely not a portable solution.

-- 
               Franck
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