Re: [PATCH] powerpc/32: Remove memory clobber asm constraint on dcbX() functions
From: Segher Boessenkool
Date: Mon May 06 2019 - 12:54:23 EST
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.