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Fix completion descriptors alignment for the ENA
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Authored by mk_semihalf.com on Nov 6 2020, 1:29 PM.
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Details

Summary

The latest generation hardware requires IO CQ (completion queue)
descriptors memory to be aligned to a 4K. It needs that feature for
the best performance.

Allocating unaligned descriptors will have a big performance impact as
the packet processing in a HW won't be optimized properly.

It's a critical fix, especially for the arm64 EC2 instances.

Diff Detail

Repository
rS FreeBSD src repository - subversion
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Event Timeline

This revision was not accepted when it landed; it landed in state Needs Review.Nov 18 2020, 2:50 PM
This revision was automatically updated to reflect the committed changes.