Messages in this thread | | | Date | Wed, 6 Mar 2019 17:58:31 +0100 | From | Peter Zijlstra <> | Subject | Re: [RFC PATCH] tools/memory-model: Remove (dep ; rfi) from ppo |
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On Thu, Mar 07, 2019 at 12:46:05AM +0900, Akira Yokosawa wrote: > So, I'm looking at the macro RELOC_HIDE() defined in include/linux/compiler-gcc.h.
> Am I the only one who was not aware of this gcc-specific macro?
It's one I regularly see, but had forgotten about in this context.
However; you can also fix things by adding asm volatile ("":::"memory"); in places.
But that's not really the point; I would really rather have a cmdline knob to fix things. That way we can compile the kernel with and without and look for differences. -fno-unicorns or something :-)
While I understand some compiler people revel in UB and love to make unicorns happen, I think in this case the produces result is utterly insane.
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