Re: New pmap status update
Jason Thorpe <[email protected]> Sun, 14 Dec 2025 13:38:56 -0500
| Newsgroups | gmane.os.netbsd.ports.m68k |
|---|---|
| Message-ID | <[email protected]> |
Ok, I am on a cross-USA flight all day today so I=E2=80=99ll have some time t= o look at this :-) -- thorpej Sent from my iPhone. > On Dec 14, 2025, at 9:26=E2=80=AFAM, Izumi Tsutsui <[email protected]= p> wrote: >=20 > =EF=BB=BFHi, > (sorry for a late trial, now Open Source Conference Hiroshima was over) >=20 >> Ok, I have pushed a modified version of your NO_CAS patch and >> also made a tweak to pmap_motorola.c to avoid the atomic functions >> that use CAS under the covers. I'd like to pull those change into >> netbsd-11 possibly, if they work on your 313 / 330 with the old pmap. >=20 > I've tried SMALL020 kernel (i.e. traditional pmap) around 20251207 > (via netboot) and unfortunately it gets panic() due to another > TAS instruction in _kernel_lock() (maybe __cpu_simple_lock_try()?): >=20 > --- >=20 >>> NetBSD/hp300 Primary Boot, Revision 1.22 (Sat May 31 17:00:41 UTC 2025) (= from NetBSD 10.99.14) >>> HP 9000/318/319/330 SPU >>> Enter "reset" to reset system. > Boot: [[[le0a:]netbsd][-a][-c][-d][-s][-v][-q]] :- le0a:netbsd.small020 -s= > WARNING: bad date in battery clock > boot: client IP address: 192.168.20.74 > root addr=3D192.168.20.1 path=3D/r/export/NetBSD/hp300/root > 2292116+99012 [211280+198022]=3D0x2abf50 > Start @ 0xff803000 [1=3D0xffa49c58-0x2abf50]... > Entry point: 0xff803000 > [ 1.0000000] bootinfo found at 0xff802000 > [ 1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 200= 3, > [ 1.0000000] 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2= 013, > [ 1.0000000] 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2= 023, > [ 1.0000000] 2024, 2025 > [ 1.0000000] The NetBSD Foundation, Inc. All rights reserved. > [ 1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993 > [ 1.0000000] The Regents of the University of California. All right= s reserved. >=20 > [ 1.0000000] NetBSD 11.99.4 (SMALL020) #0: Sun Dec 7 14:35:21 JST 2025 > [ 1.0000000] tsutsui@mirage:/s/tsutsui/netbsd/src/sys/arch/hp300/comp= ile/SMALL020 > [ 1.0000000] HP 9000/318/319/330 (16.67MHz MC68020 CPU, MC68851 MMU, 16.= 67MHz MC68881 FPU) > [ 1.0000000] total memory =3D 8180 KB > [ 1.0000000] avail memory =3D 4552 KB > [ 1.0000000] mainbus0 (root) > [ 1.0000000] intio0 at mainbus0 > [ 1.0000000] rtc0 at intio0 addr 0x420000 > [ 1.0000000] hil0 at intio0 addr 0x428000 ipl 1 > [ 1.0000000] nhpib1 at intio0 addr 0x478000 ipl 3: internal HP-IB > [ 1.0000000] hpibbus1 at nhpib1 > [ 1.0000000] dma0 at intio0 addr 0x500000 ipl 1: 98620C, 2 channels, 32-= bit DMA > [ 1.0000000] topcat0 at intio0 addr 0x560000: 1024x768x6 HP98549 catseye= frame buffer > [ 1.0000000] wsdisplay0 at topcat0 kbdmux 1 > [ 1.0000000] dio0 at mainbus0 > [ 1.0000000] com0 at dio0 scode 9 ipl 5: ns8250 or ns16450, no fifo > [ 1.0000000] com0: console > [ 1.0000000] fhpib0 at dio0 scode 14 ipl 4: 98625A/98625B HP-IB > [ 1.0000000] hpibbus2 at fhpib0 > [ 1.0000000] le0 at dio0 scode 21 ipl 5: address 08:00:09:02:6a:99 > [ 1.0000000] le0: 8 receive buffers, 2 transmit buffers > [ 1.0000000] WARNING: system needs entropy for security; see entropy(7) > [ 2.1739230] hil0: no devices > [ 5.7425910] boot device: le0 > [ 5.7625750] root on le0 > [ 5.7853590] nfs_boot: trying DHCP/BOOTP > [ 8.8310390] trap type 0, code =3D 0x1d5, v =3D 0x224340 > [ 8.8443470] kernel program counter =3D 0x1153bc > [ 8.8563110] kernel: Bus error trap > [ 8.8668830] pid =3D 0, lid =3D 3, pc =3D 001153BC, ps =3D 2500, sfc =3D= 1, dfc =3D 1 > [ 8.8668830] Registers: > [ 8.8668830] 0 1 2 3 4 5= 6 7 > [ 8.8668830] dreg: 00000001 00002104 00002004 00000001 00115DC8 03470170= 00000000 00115380 > [ 8.8668830] areg: 0132A300 03470170 03470368 03470170 0132A300 0012BBA6= 0302AEA4 FFEFFFFC >=20 > [ 8.8668830] Kernel stack (0302AD14): > [ 8.8668830] 02AD14: 00010882 0302ADEC 00000080 00002004 00000001 00115D= C8 03470170 00000000 > [ 8.8668830] 02AD34: 00115380 03470368 03470170 0132A300 0012BBA6 001332= B7 001332B3 001332AF > [ 8.8668830] 02AD54: 001332AB 00000001 00000000 00000000 00000000 000000= 00 00000000 00000000 > [ 8.8668830] 02AD74: 00000000 00000000 00000000 00000000 00000000 000000= 00 00000000 00000000 > [ 8.8668830] 02AD94: 00000000 00000000 00000000 00000000 00000000 000000= 00 00000000 00000000 > [ 8.8668830] 02ADB4: 00000000 00000000 00000000 00000000 00000000 000000= 00 00000000 0013322F > [ 8.8668830] 02ADD4: 0302AEA4 00001524 0302ADEC 00000000 000001D5 002243= 40 00000001 00002104 > [ 8.8668830] 02ADF4: 00002004 00000001 00115DC8 03470170 00000000 001153= 80 0132A300 03470170 > [ 8.8668830] 02AE14: 03470368 03470170 0132A300 0012BBA6 0302AEA4 FFEFFFF= C 00000000 25000011 > [ 8.8668830] 02AE34: 53BCB008 0D6C01D5 67027000 00224340 00224340 000000= 00 4AF94340 001153C6 > [ 8.8668830] 02AE54: 001153C4 001153C2 00000070 00800080 000F11A9 000000= 00 0302AEA8 00000080 > [ 8.8668830] 02AE74: 00002500 80200000 001153A8 00000000 00000080 001153= A0 00002004 0011A118 > [ 8.8668830] 02AE94: 00115DC8 03470368 03470170 0132A300 0302AF74 000585= B0 00000001 01317200 > [ 8.8668830] 02AEB4: 00002004 0011A118 00115DC8 03470170 00000000 001153= 80 03470368 03470170 > [ 8.8668830] 02AED4: 0132A300 0012BBA6 00000000 00115380 01317D80 0132BB= 80 0011A25C 0012BBA6 > [ 8.8668830] 02AEF4: 00000001 06708000 FA000000 0302AF18 000116C2 013450= 00 00002004 00225280 > [ 8.8804950] panic: Bus error > [ 8.8848070] cpu0: Begin traceback... > [ 8.8974230] ?(?) > [ 9.0010350] db_panic(0,14ecdc,302ad14,14eed4,1eb5c0) at 0 > [ 9.1608790] vpanic(1eb5c0,302ad20,302add4,1089e,1eb5c0) + 188 > [ 9.4307710] panic(1eb5c0,2004,1,115dc8,3470170) + c > [ 9.6906670] trap(302adec,0,1d5,224340) + 288 > [ 10.0405270] _kernel_lock(1,1317200) + 3c > [ 10.2904270] ipintr(0) + 18 > [ 10.4503630] softint_thread(3470170) + b8 > [ 10.5803110] lwp_trampoline() + e > [ 10.6008030] cpu0: End traceback... > Stopped in pid 0.3 (system) at netbsd:cpu_Debugger+0x6: unlk a6= > db> >=20 > --- >=20 > 'm68k--netbsdelf-objdump -d netbsd' shows: >=20 > --- > 00115380 <_kernel_lock>: > 115380: 4e56 0000 linkw %fp,#0 > 115384: 48e7 3838 moveml %d2-%d4/%a2-%a4,%sp@- > 115388: 262e 0008 movel %fp@(8),%d3 > 11538c: 2879 0022 0b2c moveal 220b2c <curlwp>,%a4 > 115392: 4282 clrl %d2 > 115394: 40c2 movew %sr,%d2 > 115396: 0c42 24ff cmpiw #9471,%d2 > 11539a: 6204 bhis 1153a0 <_kernel_lock+0x20> > 11539c: 46fc 2500 movew #9472,%sr > 1153a0: 2039 0023 0948 movel 230948 <cpu_info_store+0x108>,%d0 > 1153a6: 6712 beqs 1153ba <_kernel_lock+0x3a> > 1153a8: d083 addl %d3,%d0 > 1153aa: 23c0 0023 0948 movel %d0,230948 <cpu_info_store+0x108> > 1153b0: d76c 01f6 addw %d3,%a4@(502) > 1153b4: 46c2 movew %d2,%sr > 1153b6: 6000 00a4 braw 11545c <_kernel_lock+0xdc> > 1153ba: 7001 moveq #1,%d0 > 1153bc: 4af9 0022 4340 tas 224340 <kernel_lock> > ^^^ pc =3D 001153BC is here > 1153c2: 6702 beqs 1153c6 <_kernel_lock+0x46> > 1153c4: 7000 moveq #0,%d0 > 1153c6: 4a80 tstl %d0 > 1153c8: 6710 beqs 1153da <_kernel_lock+0x5a> > --- >=20 > Thanks, > --- > Izumi Tsutsui