Re: [PATCH -v2] x86/hweight: Get rid of the special calling convention

[Borislav Petkov]

On Wed, May 11, 2016 at 01:24:09PM +0200, Peter Zijlstra wrote:
> Yeah, it might save a few cycles on the call, but given that most
> machines should have popcnt these days is it worth the hassle/cost of
> duplicating the lib/hweight.c magic in asm (and remember, twice, once
> for 32bit and once for 64bit) ?

Makes sense to me - we can do the funky cool stuff but considering the
fact that we have all the required bits already, I think we should do
the thunking game and be done with it.

I guess we're older, lazy and more realists now...

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