Re: [PATCH 2/7] x86, xsave: introduce xstate enable functions

From: Robert Richter
Date: Thu Jul 22 2010 - 09:16:42 EST


On 22.07.10 08:23:56, H. Peter Anvin wrote:
> On 07/22/2010 05:15 AM, Robert Richter wrote:
> >
> > Just wondering why you are using this_func()? Instead, you could
> > simply do:
> >
> > next_func();
> > next_func = xstate_enable;
> >
> > Do you see races when bringing up multiple cpus in parallel?
> >
>
> It allows the compiler to turn it into a tailcall if frame pointers are
> disabled.

Yes, that makes sense.

Thanks.

-Robert

--
Advanced Micro Devices, Inc.
Operating System Research Center

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