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Date: Mon, 16 Jul 2007 10:46:36 -0500
From: Scott Wood <scottwood@freescale.com>
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To: suresh suresh <sureshtang@gmail.com>
Subject: Re: Kmalloc returns which address
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suresh suresh wrote:
> I want know the address return by kmalloc function? is it physical address
> or kernel virtual address.

Kernel virtual.

> For Tx and Rx, hardware uses buffers, so I have to allocate buffers and 
> pass
> the pointer to hardware. Can I pass the pointer returned kmalloc?  or  I
> should convert it into physical address?

You need to convert it; read Documentation/DMA-mapping.txt.

-Scott