Date: Tue, 31 May 2011 15:01:25 -0400 From: "b. f." <bf1783@googlemail.com> To: freebsd-questions@FreeBSD.org Subject: Re: I486_CPU or I586_CPU in kernel config Message-ID: <BANLkTinQghz0_hReP_3h4ZDR05qi2z61Jw@mail.gmail.com>
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Warren Block wrote: > On Mon, 30 May 2011, Adam Vande More wrote: > > > Perhaps this is the one you meant? > > > > http://lists.freebsd.org/pipermail/freebsd-questions/2009-January/190568.html > > That's the one! Thanks! > > > Actually the two threads touch on the same subject, and it seems > > removal of those options is still desirable on newer CPU's. > > sys/i386/i386/support.s is mentioned, but doesn't seem to have anything > explicitly specific for 586. There are some i686 entries. > > A test for cpu_class==CPUCLASS_586 in /sys/i386/isa/npx.c is mentioned > in the thread, but that check isn't in the current code. Removed: http://svnweb.FreeBSD.org/base?view=revision&revision=209460 There was a discussion about the implications for performance, although I don't remember when it took place, and whether it was on the mailing lists or in a PR audit trail. If you're interested you can track down the details. b.
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