On Fri, Feb 24, 2017 at 08:53:27AM -0800, Rodney W. Grimes wrote: > > Author: kib > > Date: Fri Feb 24 16:02:01 2017 > > New Revision: 314210 > > URL: https://svnweb.freebsd.org/changeset/base/314210 > > > > Log: > > MFC r313154: > > For i386, remove config options CPU_DISABLE_CMPXCHG, CPU_DISABLE_SSE > > and device npx. > > Um, why????? Makes it much easier to test soft float if we can remove > the npx device. Or has soft float support died yet again? Soft float was removed very long time ago.
> > Yes, an i386 without an FPU is anchient by why are we removing working > functionality? This question makes an impression that you think that kernel would not boot on a machine without FPU. The code to tolerate such configuration is there, but it is not tested for obvious reasons. Completely different issue is that userspace requires FPU and e.g. /bin/sh traps on the next setjmp(3) call. Also, we do not run on real 386, only on 486+, and there was probably only Intel 486SX CPU model which has all 486 features but no FPU. _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
