From: Christoph Hellwig <hch@lst.de>
To: Nicolas DET <nd@bplan-gmbh.de>
Cc: akpm@osdl.org, linuxppc-dev@ozlabs.org,
Sven Luther <sl@bplan-gmbh.de>, Kumar Gala <galak@freescale.com>
Subject: Re: Marvell MV6436xx ethernet driver patch
Date: Tue, 30 Aug 2005 21:09:39 +0200 [thread overview]
Message-ID: <20050830190939.GA17133@lst.de> (raw)
In-Reply-To: <20050830181119.E3A491C000B2@mwinf1203.wanadoo.fr>
On Tue, Aug 30, 2005 at 08:07:33PM +0100, Nicolas DET wrote:
> By the way, I noticed that page_address() sometimes returns NULL when using
> highmem (with a lot of mem).
You can only use page_address() on kernel-mapped memory. For
non-GFP_KERNEL allocation you need to use kmap/kmap_atomic to map it
into kernel-virtual memory space.
next prev parent reply other threads:[~2005-08-30 19:09 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-30 19:07 Marvell MV6436xx ethernet driver patch Nicolas DET
2005-08-30 19:09 ` Christoph Hellwig [this message]
2005-08-31 0:59 ` Andrew Morton
2005-09-13 10:35 ` Nicolas DET
2005-09-13 10:35 ` Christoph Hellwig
2005-09-13 20:01 ` Dale Farnsworth
[not found] <20050830181958.D856F1C0008A@mwinf0706.wanadoo.fr>
2005-08-30 23:32 ` Dale Farnsworth
2005-08-31 6:55 ` Nicolas DET
2005-08-31 9:47 ` Sven Luther
2005-08-31 16:04 ` Mark A. Greer
2005-08-31 16:17 ` Mark A. Greer
2005-08-31 16:33 ` Sven Luther
2005-08-31 17:07 ` Mark A. Greer
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