Re: [PATCH v12 0/6] iommu/dma: s390 DMA API conversion and optimized IOTLB flushing

Robin Murphy
2023-09-05T19:32:48Z

On 2023-08-25 19:26, Matthew Rosato wrote:
> On 8/25/23 6:11 AM, Niklas Schnelle wrote:
>> Hi All,
>>
>> This patch series converts s390's PCI support from its platform specific DMA
>> API implementation in arch/s390/pci/pci_dma.c to the common DMA IOMMU layer.
>> The conversion itself is done in patches 3-4 with patch 2 providing the final
>> necessary IOMMU driver improvement to handle s390's special IOTLB flush
>> out-of-resource indication in virtualized environments. The conversion
>> itself only touches the s390 IOMMU driver and s390 arch code moving over
>> remaining functions from the s390 DMA API implementation. No changes to
>> common code are necessary.
>>
>
> I also picked up this latest version and ran various tests with ISM, mlx5 and some NVMe drives. FWIW, I have been including versions of this series in my s390 dev environments for a number of months now and have also been building my s390 pci iommufd nested translation series on top of this, so it's seen quite a bit of testing from me at least.
>
> So as far as I'm concerned anyway, this series is ready for -next (after the merge window).

Agreed; I'll trust your reviews for the s390-specific parts, so indeed
it looks like this should have all it needs now and is ready for a nice
long soak in -next once Joerg opens the tree for 6.7 material.

Cheers,
Robin.