From: William Lee Irwin III <wli@holomorphy.com>
To: Amir Hermelin <amir@montilio.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Creating a page struct for HIGHMEM pages
Date: Sun, 7 Dec 2003 09:59:15 -0800 [thread overview]
Message-ID: <20031207175915.GZ8039@holomorphy.com> (raw)
In-Reply-To: <00ac01c3bceb$757b30d0$1d01a8c0@CARTMAN>
On Sun, Dec 07, 2003 at 07:56:17PM +0200, Amir Hermelin wrote:
> I may be missing something a little more basic: I have a contiguous physical
> memory area (IO memory), and I want to manage it with struct pages. If I'm
> to write to the page I need to kmap it, therefore (as I understand it) I
> need to zero the ->virtual field. What I don't understand is how, given
> the struct page I've allocated and filled out, is the page correlated with
> the correct physical memory. Where do I put the information that struct
> page X points to physical address Y, so that when I kmap(X) I get a virtual
> address pointing to Y?
You probably want ioremap(), not kmap().
-- wli
next prev parent reply other threads:[~2003-12-07 17:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-12-07 16:02 Creating a page struct for HIGHMEM pages Amir Hermelin
2003-12-07 16:22 ` William Lee Irwin III
2003-12-07 17:56 ` Amir Hermelin
2003-12-07 17:59 ` William Lee Irwin III [this message]
2003-12-07 18:05 ` Amir Hermelin
2003-12-07 18:08 ` William Lee Irwin III
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