On Fri, Feb 08, 2008 at 01:37:11PM +0200, Pekka Enberg wrote:
quoted text
> Hi Andi,
> 
> On Feb 8, 2008 1:55 PM, Andi Kleen <andi@firstfloor.org> wrote:
> > Also i'm not sure how you handle initializedness of DMAed data
> > (like network buffers). Wouldn't you need hooks into pci_dma_*
> > for this?
> 
> If the DMA'd memory is allocated from the page allocator, we don't

RX Network packets are usually allocated with kmalloc

Undoubtedly there are others too, e.g. USB comes to mind.

quoted text
> need to worry about it just yet. In case it's from kmalloc() you can
> pass __GFP_NOTRACK to annotate those call sites where the memory is

Ok you should add that then to skbuff.c. 

-Andi
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