Date: Wed, 04 Dec 2002 15:24:37 -0500 (EST) From: John Baldwin <jhb@FreeBSD.org> To: Terry Lambert <tlambert2@mindspring.com> Cc: smp@FreeBSD.ORG, beemern <beemern@ksu.edu>, Oliver Blasnik <oliver.blasnik@de.tiscali.com> Subject: Re: Intel SE7500CW2 narrowed down... Message-ID: <XFMail.20021204152437.jhb@FreeBSD.org> In-Reply-To: <3DEE51A6.90BE5C12@mindspring.com>
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On 04-Dec-2002 Terry Lambert wrote: > John Baldwin wrote: >> The only other reported/known problems are on older Pentium and possibly >> PPro machines. Do you have any other SMP i386 arch machines that do not >> work? > > [ ... ] > >> Apparently both Linux and Windows use a different algorithm for starting >> up AP's on i386 in that (I think) they send broadcast IPI's instead of >> IPI'ing each CPU individually. > > This is why they work on old ASUS Pentium 90 boxes, and FreeBSD > does not. Well, considering FreeBSD started out working on Pentium 90 machines and has used the same algorithm since it first got SMP support, I am kind of skeptical that this is the source of the recent breakage of support for dual Pentiums. > It's not related to the P4 SE7500CW2-type problems, which are > incorrect APIC description and chipset programming. In which way exactly? -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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