Date: Thu, 17 Nov 2005 10:56:35 -0500 From: John Baldwin <jhb@freebsd.org> To: Mark Kirkwood <markir@paradise.net.nz> Cc: freebsd-smp@freebsd.org Subject: Re: SMP kernel but no SMP detected on Tyan S2515 Message-ID: <200511171056.35918.jhb@freebsd.org> In-Reply-To: <437C13D7.5070709@paradise.net.nz> References: <437ADCED.2030906@paradise.net.nz> <200511161127.15216.jhb@freebsd.org> <437C13D7.5070709@paradise.net.nz>
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On Thursday 17 November 2005 12:23 am, Mark Kirkwood wrote: > John Baldwin wrote: > > On Wednesday 16 November 2005 02:17 am, Mark Kirkwood wrote: > >>This has me puzzled: > >> > >>I have a 2 cpu S2515 that has had SMP added to the kernel - however upon > >>reboot the 2nd cpu is not detected (It is detected by the BIOS BTW). I > >>see the following in the verbose dmesg: > >> > >>APIC: Could not find any APICs. > >> > >>I am guessing that it is turned off in the BIOS (???), if so, I've no > >>idea where it is (AMIBIOS is my least favorite...). > >> > >>I have enclosed a verbose dmesg and my kernel differences from GENERIC > >>plus the (non-existent) output from mptable. > >> > >> > >>Any ideas appreciated. > > > > You're going to need to fiddle with the BIOS until mptable(8) finds a > > valid MP Table. The kernel relies on the MP Table to enumerate CPUs and > > route interrupts. You can also try enabling ACPI if your machine > > supports ACPI. > > Ok - will do. I > > One other point, the cpus are both PIII SL52R (1000/256/133/1.75V), but > they don't appear to be a matched pair (one is made in Malay, the other > somewhere else - the heatsink is over it...) would this matter? > > Another possibility is that one of the cpus is faulty - should mptable > show anything if one cpu is not "really" going (or for that matter if I > remove one of 'em)? It depends on your BIOS. It generates the table, so it may choose to not provide the table if it thinks your CPUs are incompatible. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.orghome | help
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