From: Scott Wood <scottwood@freescale.com>
To: suresh suresh <sureshtang@gmail.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: Kmalloc returns which address
Date: Mon, 16 Jul 2007 10:46:36 -0500 [thread overview]
Message-ID: <469B92DC.50609@freescale.com> (raw)
In-Reply-To: <e5eb93010707160659m6a7d0b02p623542739d28ab29@mail.gmail.com>
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
next prev parent reply other threads:[~2007-07-16 15:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-16 13:59 Kmalloc returns which address suresh suresh
2007-07-16 15:46 ` Scott Wood [this message]
2007-07-23 3:47 ` Misbah khan
2007-07-23 18:35 ` Scott Wood
2007-07-24 7:03 ` Misbah khan
2007-07-20 10:52 ` Misbah khan
2007-07-20 12:13 ` Alessandro Rubini
2007-07-20 16:58 ` Scott Wood
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