Hi all, This patch resolves a subtle ordering issue in the ring code that could lead to incorrect behavior under certain conditions. The change favors a performance-conscious fix while preserving existing behavior.
For background, motivation, and validation (including Herd7 litmus tests), please see the accompanying write-up:https://community.arm.com/arm-community-blogs/b/architectures-and-processors-blog/posts/when-a-barrier-does-not-block-the-pitfalls-of-partial-order Wathsala Vithanage (1): ring: safe partial ordering for head/tail update lib/ring/rte_ring_c11_pvt.h | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) -- 2.43.0
