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SubjectRe: [Patch v2 0/3] iommu: reduce spinlock contention on fast path
On Tue, Dec 17, 2019 at 1:43 AM Joerg Roedel <> wrote:
> 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?

I will resend V3 with Robin Cc'ed.


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