Re: [PATCH 2.6.19-rc1 update4] drivers: add LCD support

From: Franck Bui-Huu
Date: Tue Oct 31 2006 - 03:47:41 EST


Miguel Ojeda wrote:
> Again: Please read LDD3. It explains it well. Read all the "Remapping
> RAM" chapter and you will understand what I've done, or just try to
> remap RAM yourself with remap_pfn_range.

Well, I'm trying to get an explanation here and here is what I get
from you:

MO > LDD3 states it must work like this. (Note: it doesn't explain
why though)
FBH > Weird I read the implementation of remap_pfn_range() and it
doesn't seem to have such restriction, I'm wondering how
things work...
MO > Again it's stated in LDD3, read again.

Do you really think you explain anything with such replies ?

Fortunately, Hugh Dickins gives a hint and it appears that the
restriction doesn't hold anymore.

> (I really tried it using
> different ways and I couldn't map it with remap_pfn_range, it returns
> you a place full with zeros, as LDD3 states).

I'm really wondering how did you test the thing... ;)

bye
Franck
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