Date: Tue, 14 Aug 2018 18:34:34 +0300 From: Andriy Gapon <avg@FreeBSD.org> To: Mark Johnston <markj@freebsd.org>, src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: Re: svn commit: r337754 - head/sys/x86/x86 Message-ID: <afb7b9a8-19d8-e763-e3ed-c12e2f7094d6@FreeBSD.org> In-Reply-To: <201808141402.w7EE2seW007725@repo.freebsd.org> References: <201808141402.w7EE2seW007725@repo.freebsd.org>
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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. -- Andriy Gapon
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