[PATCH v8 00/24] Provide a new two step DMA mapping API

Leon Romanovsky leon at kernel.org
Sun Apr 20 00:14:46 PDT 2025


On Fri, Apr 18, 2025 at 06:18:00AM -0600, Jens Axboe wrote:
> On 4/18/25 12:47 AM, Leon Romanovsky wrote:
> > Following recent on site LSF/MM 2025 [1] discussion, the overall
> > response was extremely positive with many people expressed their
> > desire to see this series merged, so they can base their work on it.
> > 
> > It includes, but not limited:
> >  * Luis's "nvme-pci: breaking the 512 KiB max IO boundary":
> >    https://lore.kernel.org/all/20250320111328.2841690-1-mcgrof@kernel.org/
> >  * Chuck's NFS conversion to use one structure (bio_vec) for all types
> >    of RPC transports:
> >    https://lore.kernel.org/all/913df4b4-fc4a-409d-9007-088a3e2c8291@oracle.com
> >  * Matthew's vision for the world without struct page:
> >    https://lore.kernel.org/all/20250320111328.2841690-1-mcgrof@kernel.org/
> >  * Confidential computing roadmap from Dan:
> >    https://lore.kernel.org/all/6801a8e3968da_71fe29411@dwillia2-xfh.jf.intel.com.notmuch
> > 
> > This series is combination of effort of many people who contributed ideas,
> > code and testing and I'm gratefully thankful for them.
> 
> Since I previously complained about performance regressions from this
> series, I re-tested the current code. I no longer see a performance
> regression on a AMD EPYC 9754 256 core box, nor on AMD EPYC 7763 128
> core box.
> 
> Tested-by: Jens Axboe <axboe at kernel.dk>

Thanks a lot.

> 
> -- 
> Jens Axboe
> 



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