Messages in this thread | | | Date | Mon, 26 May 2008 21:20:10 -0700 | From | Arjan van de Ven <> | Subject | Re: MMIO and gcc re-ordering issue |
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On Mon, 26 May 2008 21:08:10 -0700 Roland Dreier <rdreier@cisco.com> wrote:
> > either via sparse or some fancy lockdep like "device store" thing? > > If we can't test for it and it doesn't show up on x86 ... it'll > > just be an eterrnal chase. > > Ben's point is that it will start showing up on x86 because newer > compilers are reordering things... > > - R.
I know a basic reorder will show up there. A simple "barrier()" in readl/writel solves it for x86. Understandably, Ben doesn't really like that answer ;-)
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