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Re: [BUG?] cavium cn56xx and dma_map_single warning

To: David Daney <>
Subject: Re: [BUG?] cavium cn56xx and dma_map_single warning
From: Zhuang Yuyao <>
Date: Tue, 23 Mar 2010 09:30:53 +0800
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Thanks for your reply. Will this issue be solved soon? Is it a
hardware issue or a software one? Can I make the 4G-256M memory
reserved so that kernel will not try to allocate memory in this area?

can not use more than 4G ram is bothersome since the memory is so cheap now. :-)

Thanks very much.

On Tue, Mar 23, 2010 at 12:44 AM, David Daney <> wrote:
> This is a known issue.
> passing mem==3072M will restrict kernel memory usage thus avoiding the
> issue.
> David Daney

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