Date: Mon, 7 Feb 2005 13:52:06 -0500 From: John Baldwin <jhb@FreeBSD.org> To: Nate Lawson <nate@root.org> Cc: Ian Dowse <iedowse@FreeBSD.org> Subject: Re: cvs commit: src/sys/dev/random probe.c Message-ID: <200502071352.06289.jhb@FreeBSD.org> In-Reply-To: <4207B5C9.4030505@root.org> References: <200502061655.j16GtqDK033151@repoman.freebsd.org> <200502071015.39224.jhb@FreeBSD.org> <4207B5C9.4030505@root.org>
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On Monday 07 February 2005 01:39 pm, Nate Lawson wrote: > John Baldwin wrote: > > On Sunday 06 February 2005 11:55 am, Ian Dowse wrote: > >>iedowse 2005-02-06 16:55:52 UTC > >> > >> FreeBSD src repository > >> > >> Modified files: > >> sys/dev/random probe.c > >> Log: > >> Check that we have at least a 586-class CPU before calling do_cpuid(). > >> This fixes booting on a number of 486 processors. > > > > This is wrong. Some 486's do have cpuid, notable the dx4's (I used to > > have one.) The correct test is to see if you can flip a bit in %eflags > > (can't remember which one). If that flag stays at zero then you don't > > have cpuid, if the bit follows the value written to it then you do have > > cpuid. > > That matters little since the cpuid result is then used to check for a > VIA part introduced in 2003. Nevermind then. :-P -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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