Messages in this thread | | | Date | Mon, 6 May 2019 11:53:14 -0500 | From | Segher Boessenkool <> | Subject | Re: [PATCH] powerpc/32: Remove memory clobber asm constraint on dcbX() functions |
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Hi!
On Mon, May 06, 2019 at 04:31:38PM +0000, Christophe Leroy wrote: > However, I've tried your suggestion below and get unnexpected result.
> >you can do > > > > __asm__ __volatile__ ("dcbf %0" : : "Z"(addr) : "memory"); > > > >to save some insns here and there. ]
This should be "dcbf %y0". Sorry. And not addr -- it needs a mem there, so deref addr as usual.
Segher
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