Date: Mon, 06 Feb 2006 21:55:21 +0900 From: Watanabe Kazuhiro <CQG00620@nifty.ne.jp> To: freebsd-current <freebsd-current@freebsd.org> Subject: Cannot boot the 7-current's GENERIC kernel on some old PCs (Pentium/P54C, DX4ODP) Message-ID: <20060206125511.957BC1EF46@mail.asahi-net.or.jp>
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Hi, all. I have some old PCs which CPU is Intel Pentium/P54C and DX4ODP. They cannot boot the recent 7-current's GENERIC kernel. * NEC PC-9821Xa9 (CPU: Pentium/P54C, Memory: 64MB, pc98) * NEC PC-9821As2 (CPU: DX4ODP, Memory: 42MB, pc98) * Fujitsu FMV-575D4 (CPU: Pentium/P54C, Memory: 128MB, i386) They can boot 6.0-RELEASE, but cannot boot 7-current (CVSup'ed with date=2006.01.26.00.00.00). The kernel booting message is below: | GDB: no debug ports present | KDB: debugger backends: ddb | KDB: current backend: ddb | Copyright (c) 1992-2006 The FreeBSD Project. | Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 | The Regents of the University of California. All rights reserved. | FreeBSD 7.0-CURRENT #11: Sat Feb 4 20:44:38 JST 2006 | nabe@scorpio.zodiac.org:/FreeBSD/obj-current/FreeBSD/FreeBSD-current/src/sys/GENERIC | WARNING: WITNESS option enabled, expect reduced performance. (stopped here) But when I add a "options PQ_NOOPT" configulation option to the GENERIC kernel configulation file and recompile it, this kernel is able to boot on these PCs. However, if I try to boot the kernel with "boot -v", it still hangs up: | GDB: no debug ports present | KDB: debugger backends: ddb | KDB: current backend: ddb | Copyright (c) 1992-2006 The FreeBSD Project. | Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 | The Regents of the University of California. All rights reserved. | FreeBSD 7.0-CURRENT #0: Sun Feb 5 14:12:05 JST 2006 | nabe@scorpio.zodiac.org:/FreeBSD/obj-current/FreeBSD/FreeBSD-current/src/sys/GENERIC_PQ_NOOPT | WARNING: WITNESS option enabled, expect reduced performance. | Preloaded elf kernel "/kernel" at 0xc0f53000. | Preloaded elf module "/acpi.ko" at 0xc0f530c0. | Preloaded mfs_root "/mfsroot" at 0xc0f53160. | Calibrating clock(s) ... i8254 clock: 1193258 Hz | CLK_USE_I8254_CALIBRATION not specified - using default frequency | Timecounter "i8254" frequency 1193182 Hz quality 0 | Calibrating TSC clock ... TSC clock: 74851622 Hz | CPU: Pentium/P54C (74.85-MHz 586-class CPU) | Origin = "GenuineIntel" Id = 0x525 Stepping = 5 | Features=0x1bf<FPU,VME,DE,PSE,TSC,MSR,MCE,CX8> (stopped here) I think this is caused by the CPU cache detection functions in sys/i386/i386/identcpu.c (but I have no idea to solve the problem). These ware comitted at the end of December 2005. From src/UPDATING: | 20051231: | The page coloring algorithm in the VM subsystem was converted | from tuning with kernel options to autotuning. Please remove | any PQ_* option except PQ_NOOPT from your kernel config. P.S. Today's 7-current still hangs up (tested FreeBSD/pc98 on Xa9). --- Watanabe Kazuhiro (CQG00620@nifty.ne.jp)
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