Messages in this thread | | | Date | Fri, 22 Oct 2021 00:37:19 +0200 | From | Peter Zijlstra <> | Subject | Re: [PATCH v2 14/14] bpf,x86: Respect X86_FEATURE_RETPOLINE* |
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On Thu, Oct 21, 2021 at 11:03:33AM -0700, Alexei Starovoitov wrote:
> > I nicked it from emit_bpf_tail_call() in the 32bit jit :-) It seemed a > > lot more robust than the 64bit one and I couldn't figure out why the > > difference. > > Interesting. Daniel will recognize that trick then :)
> > Is there concurrency on the jit? > > The JIT of different progs can happen in parallel.
In that case I don't think the patch is safe. I'll see if I can find a variant that doesn't use static storage.
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