On 01/08/17 18:59, Robin Murphy wrote:
> Currently, we handle all DMA aliases equally when calculating MSI
> requester IDs for the generic infrastructure. This turns out to be the
> wrong thing to do in the face of pure DMA quirks like those of Marvell
> SATA cards, where in the usual case the last thing seen in the alias
> walk is the DMA phantom function: we end up configuring the MSI
> doorbell to expect that alias, then find we have no interrupts since
> the MSI writes still come from the 'real' RID, thus get filtered out
> and ignored.
>
> Improve the alias walk to only account for the topological aliases that
> matter, based on the logic from the Intel IRQ remapping code.
>
> Signed-off-by: Robin Murphy <robin.mur...@arm.com>
Acked-by: Marc Zyngier <marc.zyng...@arm.com>
M.
--
Jazz is not dead. It just smells funny...
