Hi Joerg,
On Tue, Feb 18, 2014 at 05:50:27PM +0000, Joerg Roedel wrote:
> On Mon, Feb 10, 2014 at 06:32:32PM +0000, Will Deacon wrote:
> > - Andreas Herrmann took the driver for a run with a real SATA
> > controller, which caused the new mutex-based locking to explode
> > since we require mappings in atomic context
>
> I just did quick review of the changes. Was the SATA controller using
> the IOMMU through the DMA-API? In this case you would need the IRQ-safe
> spinlocks to avoid dead-locks because the DMA-API can be used from
> IRQ-context.
Unfortunately, I don't know and since Calxeda has ceased to be, Andreas is
no longer working on this (I suspect his email address also bounces).
I can send an additional patch using spin_*_irq{save,restore} for the
domain->lock if you like?
Will
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