Re: [PATCH] x86-64: fix memset() to support sizes of 4Gb and above

Ingo Molnar
2012-01-06T19:03:59Z

* Jan Beulich <JBeulich@suse.com> wrote:

> > Would be nice to add support for arch/x86/lib/memset_64.S as
> > well, and look at the before/after performance of it. In
> > userspace we can do a lot more accurate measurements of this
> > kind:
>
> I'll see whether I can get this done, but I admit that I'm
> entirely unfamiliar with this tool and its infrastructure.
> [...]

Just check what it does for memcpy and duplicate it.

> [...] I hope doing this is not going to be a requirement for
> acceptance of the patch.

No, but it would certainly help us make sure there's no
performance side effect.

Thanks,

Ingo