Re: iommu_iova leak [inside 3w-9xxx]

[Chris Boot]

On 17/09/2011 20:22, adam radford wrote:
> On Sat, Sep 17, 2011 at 7:29 AM, Chris Boot<bootc@xxxxxxxxx>  wrote:
> > On 17 Sep 2011, at 12:57, Chris Boot wrote:
> > > On 17 Sep 2011, at 11:45, Woodhouse, David wrote:
> > > > I suppose it's vaguely possible that we're leaking them in such a way
> > > > that they remain on the rbtree, perhaps if the deferred unmap is never
> > > > actually happening... but I think it's a whole lot more likely that the
> > > > PCI driver is just never bothering to unmap the pages it maps.
> If you think 3w-9xxx is not unmapping pages it maps, please re-run with
> CONFIG_PCI_DMA_DEBUG=y

I can't find a CONFIG_PCI_DMA_DEBUG to enable in 3.1-rc6. Did you mean 
CONFIG_DMA_API_DEBUG?

And as David Woodhouse mentions, the 3ware card houses my root 
filesystem - is there a way I can debug without unloading the module? If 
not I guess I can try to work around it but it would be difficult.

Cheers,
Chris

--
Chris Boot
bootc@xxxxxxxxx
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