Re: [Patch v2 0/3] iommu: reduce spinlock contention on fast path

Joerg Roedel
2019-12-17T09:43:11Z

On Thu, Nov 28, 2019 at 04:48:52PM -0800, Cong Wang wrote:
> This patchset contains three small optimizations for the global spinlock
> contention in IOVA cache. Our memcache perf test shows this reduced its
> p999 latency down by 45% on AMD when IOMMU is enabled.

Sounds nice. Can you please re-send with Robin Murphy on Cc? Robin, can
you have a look at these IOVA changes please?

Thanks,

Joerg