Date: Thu, 20 Apr 2000 10:56:12 +0900 From: Osamu MIHARA <mihara@prd.fc.nec.co.jp> To: luoqi@watermarkgroup.com Cc: smp@csn.net, freebsd-smp@FreeBSD.ORG Subject: Re: Multiple APIC support (RE: Issues with Spankin' new Poweredge 4400 w/ dual 866's and 133MHz FSB?) Message-ID: <867ldtv8lf.wl@oz.prd.fc.nec.co.jp> In-Reply-To: In your message of "Wed, 19 Apr 2000 20:23:04 -0400 (EDT)" <200004200023.UAA24083@lor.watermarkgroup.com> References: <200004200023.UAA24083@lor.watermarkgroup.com>
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Hi Luoqi,
At Wed, 19 Apr 2000 20:23:04 -0400 (EDT),
Luoqi Chen <luoqi@watermarkgroup.com> wrote:
> You're right, the code in pmap.c assumes page alignment for IO apics but
> according to MPspec they are only required to be aligned to 1K boundary.
> There is also a typo that would cause problems if you have more than one
> io apics that are on different pages. The following patch should fix these
> problems.
Thank you for the patch, but applying your patch results in panic
while booting, just after showing avail memory. Here is the boot log.
(Even if second IO-APIC is disabled, the phenomenon is same.)
>> FreeBSD/i386 BOOT
Default: 0:da(0,a)kernel
boot:
Copyright (c) 1992-2000 The FreeBSD Project.
Copyright (c) 1982, 1986, 1989, 1991, 1993
The Regents of the University of California. All rights reserved.
FreeBSD 5.0-CURRENT #1: Thu Apr 20 10:42:34 JST 2000
mihara@swd-poseidon.prd.fc.nec.co.jp:/usr/src/sys/compile/POSEIDON
Timecounter "i8254" frequency 1193182 Hz
CPU: Pentium/P54C (98.00-MHz 586-class CPU)
Origin = "GenuineIntel" Id = 0x525 Stepping = 5
Features=0x3bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8,APIC>
real memory = 100663296 (98304K bytes)
avail memory = 94220288 (92012K bytes)
Fatal trap 12: page fault while in kernel mode
mp_lock = 00000008; cpuid = 0; lapic.id = 00000000
fault virtual address = 0xffc15000
fault code = supervisor write, page not present
instruction pointer = 0x8:0xc02c9d27
stack pointer = 0x10:0xc039bf44
frame pointer = 0x10:0xc039bf54
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enabled, resume, IOPL = 0
current process = Idle
interrupt mask = net tty bio cam <- SMP: XXX
trap number = 12
panic: page fault
mp_lock = 00000008; cpuid = 0; lapic.id = 00000000
Uptime: 0s
--
Osamu MIHARA // NEC Printers Division
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