Date: Sat, 31 Aug 1996 15:43:40 -0600 From: Steve Passe <smp@csn.net> To: freebsd-smp@FreeBSD.ORG Cc: rv@groa.uct.ac.za, erich@uruk.org Subject: Re: SMP on Intel MG15 Message-ID: <199608312143.PAA28776@clem.systemsix.com>
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Hi, Russel and I are trying to get FreeBSD SMP working on the Intel XXPRESS board. We are past hte 2nd CPU ID = 2 problem. It appears that the apic_startup routine never (correctly) launches the 2nd CPU. looking at the MP spec and Intel pent. manuals it appears that the INIT/Reset IPI expects that a "warm start vector" will exist for starting the 2nd CPU, but the current code seems to ignore this. See MP spec B.4.1 for details. Is the purpose of this INIT/Reset IPI just to get the 2nd CPU to a known state, ie NOT to actually start it processing the bootMP code? Should not the code setup the BIOS warmstart vector to point @ a "HLT" instruction b4 using the INIT IPI? -- Steve Passe | powered by smp@csn.net | FreeBSD
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