[PATCH v2 0/4] SMMUv3 CMD_SYNC optimisation

[Will Deacon]

Hi Robin,

On Thu, Aug 31, 2017 at 02:44:24PM +0100, Robin Murphy wrote:
> Since Nate reported a reasonable performance boost from the out-of-line
> MSI polling in v1 [1], I've now implemented the equivalent for cons
> polling as well - that has been boot-tested on D05 with some trivial I/O
> and at least doesn't seem to lock up or explode. There's also a little
> cosmetic tweaking to make the patches a bit cleaner as a series.
> 
> Robin.
> 
> [1] https://www.mail-archive.com/iommu@lists.linux-foundation.org/msg19657.html
> 
> Robin Murphy (5):
>   iommu/arm-smmu-v3: Specialise CMD_SYNC handling
>   iommu/arm-smmu-v3: Forget about cmdq-sync interrupt
>   iommu/arm-smmu-v3: Use CMD_SYNC completion interrupt
>   iommu/arm-smmu-v3: Poll for CMD_SYNC outside cmdq lock
>   iommu/arm-smmu-v3: Use burst-polling for sync completion

What's this final mythical patch about? I don't see it in the series.

Anyway, the first two patches look fine to me, but this doesn't apply
on top of my iommu/devel branch so they will need rebasing.

Cheers,

Will