Date: Tue, 27 Jul 1999 17:01:47 -0400 From: Tom Embt <tom@embt.com> To: freebsd-smp@freebsd.org Subject: Re: SMP kernel on dual board with single proc? Message-ID: <3.0.3.32.19990727170147.0075e828@mail.embt.com> In-Reply-To: <19990727105633.C228D1C9E@overcee.netplex.com.au> References: <Your message of "Mon, 26 Jul 1999 12:57:08 CST." <199907261857.MAA20179@mt.sri.com>
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At 06:56 PM 7/27/99 +0800, you wrote: >Nate Williams wrote: >> > Is it possible to build & run an SMP kernel on a DP board with only one CPU >> > installed? I know this is kind of a silly thing to do but I was just >> > wondering if it is possible. >> >> Works fine. As a matter of fact, I'm sitting in front of one right >> now. The second CPU has been sitting next to me for about 5 months, but >> I never get time to install it, and besides most of my development is >> done on 2.2.8 which doesn't support SMP.. > >Yes, but that's not what he asked. He wanted to know if a SMP kernel worked >on a SMP motherboard with one CPU, not if a UP kernel works on a 1 cpu SMP >motherboard. > Correct, I am asking if it can be done with an _SMP_ kernel, I already run a regular UP kernel on this board no problem (hence this is not a pressing issue I was just wondering if it could be done). Panic msg from bootup (copied by hand) : panic: NO BSP found! mp_lock = 00000009; cpuid = 0; lapic.id = 00000000 Automatic reboot in 15 seconds - press a key on the console to abort Hardware: Abit BP6 dual-Socket 370 mobo (great board, BTW)* One SL36C Celeron 366 PPGA CPU populating the "CPU #1" socket In BIOS: MPS version = 1.4 * The BP6 doesn't use any sort of terminator for the empty socket, and will work with the CPU in either one Snippet of kernel conf: machine "i386" cpu "I686_CPU" ident "PARANOR-072799a-S" # <-- CHANGE THIS!! maxusers 16 options SMP options APIC_IO options NCPU=1 options NBUS=3 options NAPIC=1 options NINTR=24 MPTable: ============================================================================ === MPTable, version 2.0.15 ---------------------------------------------------------------------------- --- MP Floating Pointer Structure: location: BIOS physical address: 0x000f5b30 signature: '_MP_' length: 16 bytes version: 1.1 checksum: 0x80 mode: Virtual Wire ---------------------------------------------------------------------------- --- MP Config Table Header: physical address: 0x000f1400 signature: 'PCMP' base table length: 288 version: 1.1 checksum: 0xfc OEM ID: 'OEM00000' Product ID: 'PROD00000000' OEM table pointer: 0x00000000 OEM table size: 0 entry count: 29 local APIC address: 0xfee00000 extended table length: 0 extended table checksum: 0 ---------------------------------------------------------------------------- --- MP Config Base Table Entries: -- Processors: APIC ID Version State Family Model Step Flags 0 0x11 BSP, usable 6 6 5 0xfbff -- Bus: Bus ID Type 0 PCI 1 PCI 2 ISA -- I/O APICs: APIC ID Version State Address 2 0x11 usable 0xfec00000 -- I/O Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN# ExtINT conforms conforms 2 0 2 0 INT conforms conforms 2 1 2 1 INT conforms conforms 2 0 2 2 INT conforms conforms 2 3 2 3 INT conforms conforms 2 4 2 4 INT conforms conforms 2 5 2 5 INT conforms conforms 2 6 2 6 INT conforms conforms 2 7 2 7 INT active-hi edge 2 8 2 8 INT conforms conforms 2 9 2 9 INT conforms conforms 2 10 2 10 INT conforms conforms 2 11 2 11 INT conforms conforms 2 12 2 12 INT conforms conforms 2 13 2 13 INT conforms conforms 2 14 2 14 INT conforms conforms 2 15 2 15 INT active-lo level 0 7:A 2 19 INT active-lo level 0 9:A 2 19 INT active-lo level 0 19:A 2 18 INT active-lo level 0 19:B 2 18 INT active-lo level 1 0:A 2 16 SMI conforms conforms 2 0 2 23 -- Local Ints: Type Polarity Trigger Bus ID IRQ APIC ID PIN# ExtINT conforms conforms 0 0:A 255 0 NMI conforms conforms 0 0:A 255 1 ---------------------------------------------------------------------------- --- # SMP kernel config file options: # Required: options SMP # Symmetric MultiProcessor Kernel options APIC_IO # Symmetric (APIC) I/O # Optional (built-in defaults will work in most cases): #options NCPU=1 # number of CPUs #options NBUS=3 # number of busses #options NAPIC=1 # number of IO APICs #options NINTR=24 # number of INTs ============================================================================ === Shall I assume it is not possible to run an SMP kernel on this system w/o another CPU? Thanks, Tom Embt tom@embt.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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