On Wed, Jul 9, 2014 at 3:00 PM, Will Deacon <will.dea...@arm.com> wrote: > On Tue, Jul 08, 2014 at 08:06:53AM +0100, Zi Shen Lim wrote: >> >> 1. Implement remaining classes of eBPF instructions: ST|MEM, STX|XADD >> which currently do not have corresponding test cases in test_bpf. > > I can help out with atomics, if you need it. Are the memory barrier > semantics well-defined for eBPF?
There are no barrier or cmpxchg instructions in eBPF, since such use case doesn't exist yet. There is only xadd that is equivalent to atomic_add which can be JITed as exclusive load/store on arm64. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
