On 7/14/22 17:35, Sean Christopherson wrote:
Can you check that smp_rmb() and smp_wmb() generate correct instructions on
arm64?
That seems like the most likely scenario (or a kernel bug), I distinctly remember
the barriers provided by tools/ being rather bizarre.
Maybe we should bite the bait and use C11 atomics in tools/. I've long
planned an article "C11 atomics for kernel programmers", especially
because this will also be an issue when Rust gets into the mix...
Paolo
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