-----Original Message----- From: <[email protected]> on behalf of Andriy Gapon <[email protected]> Date: 2018-08-14, Tuesday at 08:34 To: Mark Johnston <[email protected]>, <[email protected]>, <[email protected]>, <[email protected]> Subject: Re: svn commit: r337754 - head/sys/x86/x86
> On 14/08/2018 17:02, Mark Johnston wrote: >> At some point memcpy() may be an ifunc, ifunc resolution cannot be done >> until CPU identification has been performed, and CPU identification must >> be done after loading any microcode updates. > > Wouldn't it be cool if before an ifunc is resolved (to a proper > optimized version) it pointed to a default implementation that is > sufficiently naive and robust that it can work on all CPUs? > But I don't know much about ifunc implementation, so no idea if it can > work like that. Or, if that can't be done, have a pre_ifunc_memcpy() with the default implementation, which is explicitly for use before ifuncs are set up. -Ravi > -- > Andriy Gapon _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
