Re: [PATCH 2/3] powerpc: fix build errors

Segher Boessenkool
2022-02-24T17:41:24Z

On Thu, Feb 24, 2022 at 11:39:16PM +1100, Michael Ellerman wrote:
> > /* Calculate the parity of the value */
> > - asm ("popcntd %0,%1" : "=r" (parity) : "r" (val));
> > + asm (".machine \"push\"\n"
> > + ".machine \"power7\"\n"
> > + "popcntd %0,%1\n"
> > + ".machine \"pop\"\n"
> > + : "=r" (parity) : "r" (val));
>
> This was actually present in an older CPU, but it doesn't really matter,
> this is fine.

popcntd was new on p7 (popcntb is the older one :-) ) And it does not
matter indeed.

Segher