Re: [PATCH v2 00/48] ARM: PXA multiplatform support

[Guenter Roeck <linux@roeck-us.net>]

On Tue, Apr 19, 2022 at 06:37:22PM +0200, Arnd Bergmann wrote:
> From: Arnd Bergmann <arnd@arndb.de>
> 
> This revisits a series I sent a few years ago:
> 
> https://lore.kernel.org/lkml/20191018154052.1276506-1-arnd@arndb.de/
> 
> All the other ARMv5 conversions are under way now, with
> OMAP1 being the only one still not in linux-next yet,
> and PXA completing the set.
> 
> Most of the patches are unchanged from before, furtunately
> the PXA code is fairly stable. I addressed Robert's comments,
> pulled in two patches from Dmitry, and added the last a the
> final four patches to finish off the multiplatform conversion.
> 
> I hope someone is left to test these on PXA: if this works,
> I'd like to merge it for 5.19. A git tree with these is avaialable
> for testing at
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/soc/soc.git/log/?h=pxa-multiplatform-5.18
> 

Unfortunately that crashes for me when trying to boot from ide.
Bisect points to the last patch of the series.

Guenter

---
[    1.403715] 8<--- cut here ---
[    1.403848] Unable to handle kernel paging request at virtual address feeb000e
[    1.404097] [feeb000e] *pgd=00000000
[    1.404400] Internal error: Oops: 805 [#1] PREEMPT ARM
[    1.404648] Modules linked in:
[    1.404890] CPU: 0 PID: 22 Comm: pccardd Not tainted 5.18.0-rc3-next-20220422 #1
[    1.405159] Hardware name: SHARP Borzoi
[    1.405319] PC is at pcmcia_init_one+0xf8/0x27c
[    1.405476] LR is at devres_add+0x40/0x6c
[    1.405611] pc : [<c04bdea0>]    lr : [<c044d808>]    psr: a0000113
[    1.405846] sp : c48a5d00  ip : c15f4220  fp : 60000113
[    1.406026] r10: 00000000  r9 : c48b000e  r8 : c48b0000
[    1.406195] r7 : feeb0000  r6 : feeb000e  r5 : c15ec090  r4 : c15ec020
[    1.406395] r3 : 00000002  r2 : 00000000  r1 : c15f4200  r0 : feeb000e
[    1.406615] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    1.406847] Control: 00007977  Table: a0004000  DAC: 00000071
[    1.407042] Register r0 information: 0-page vmalloc region starting at 0xfee00000 allocated at pci_reserve_io+0x0/0x38
[    1.407453] Register r1 information: slab
[    1.407721] Register r2 information: NULL pointer
[    1.407885] Register r3 information: non-paged memory
[    1.408047] Register r4 information: slab
[    1.408179] Register r5 information: slab
[    1.408310] Register r6 information: 0-page vmalloc region starting at 0xfee00000 allocated at pci_reserve_io+0x0/0x38
[    1.408622] Register r7 information: 0-page vmalloc region starting at 0xfee00000 allocated at pci_reserve_io+0x0/0x38
[    1.408941] Register r8 information: 0-page vmalloc region starting at 0xc48b0000 allocated at soc_pcmcia_add_one+0xf0/0x370
[    1.409291] Register r9 information: 0-page vmalloc region starting at 0xc48b0000 allocated at soc_pcmcia_add_one+0xf0/0x370
[    1.409617] Register r10 information: NULL pointer
[    1.409768] Register r11 information: non-paged memory
[    1.409924] Register r12 information: slab
[    1.410066] Process pccardd (pid: 22, stack limit = 0x(ptrval))
[    1.410268] Stack: (0xc48a5d00 to 0xc48a6000)
[    1.410448] 5d00: c15ebb78 00000000 0000001a 00000110 00000000 c0ad702c ff00051a c15ec090
[    1.410694] 5d20: c0b713ec c0b713ec c12f6048 c0b644fc 00000000 00000000 60000113 c053f6bc
[    1.410938] 5d40: c16b3bf0 c15efa88 c09d4e48 00000001 00000007 00000200 0000000f 00000000
[    1.411174] 5d60: 00000000 00000000 c0b71300 c0ad702c c0b644fc 00000000 c15ec090 c0b713ec
[    1.411410] 5d80: c0b9f980 c04491a8 c15ec090 00000000 60000113 c15ec090 c0b713ec c15ec090
[    1.411644] 5da0: 00000003 c0449530 c078a988 c0399c90 ffffff08 c0be4d7c c0b713ec c15ec090
[    1.411882] 5dc0: 00000003 c0b644fc 00000000 00000000 60000113 c04496e0 00000001 c0b713ec
[    1.412117] 5de0: c48a5e2c c15ec090 c0b644fc c0449aa0 00000000 c48a5e2c c04499fc c0be4d50
[    1.412352] 5e00: c0b644fc c044702c 00000000 c12f407c c16b3bd4 c0ad702c c15ec090 00000001
[    1.412587] 5e20: c15ec0d4 c0449030 c15ec090 c15ec090 00000001 c0ad702c c15ec090 c15ec090
[    1.412827] 5e40: c0b77a9c c0448044 c15ec090 00000000 c12f5030 c04458bc 00000001 c009c720
[    1.413065] 5e60: c15ec090 c04590e4 c15ec090 00000002 c12f6048 c12f6150 c15ec088 c0ad702c
[    1.413307] 5e80: c15ec090 c15ec020 c12f6150 c12f6048 c12f6150 c15ec088 c15ec090 c12f6160
[    1.413551] 5ea0: 60000113 c0540820 00000000 c12f6048 c12f6150 ffffffe4 c12f6178 c12f6900
[    1.413804] 5ec0: c0bb6828 c05409e8 00000000 00000011 c12f6048 00000000 c12f6150 c0ba35c8
[    1.414050] 5ee0: c12f6178 c12f6900 c0bb6828 c074c3a8 c48a5f04 c0ad702c c48a5f10 c074c44c
[    1.414294] 5f00: c098de10 c09acdc0 c12f4fa0 c48a5f1c 000031d0 c0ad702c c12f6048 c12f6048
[    1.414538] 5f20: 00000000 c12f6150 c0ba35c8 c0540af8 c12f6048 00000000 c12f6150 c053dcd4
[    1.414791] 5f40: c12f6048 00000000 00000080 c12f6144 c12f6900 c053e704 00000000 c12f6178
[    1.415037] 5f60: 000030d0 c0ad702c c12f6900 c12f4fe0 c12f21a0 c053e36c c12f6048 c12f6900
[    1.415282] 5f80: c4809cc0 00000000 00000000 c004d67c c12f4fe0 c004d5a0 00000000 00000000
[    1.415531] 5fa0: 00000000 00000000 00000000 c0008368 00000000 00000000 00000000 00000000
[    1.415780] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.416025] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[    1.416643]  pcmcia_init_one from pcmcia_device_probe+0xe4/0x2a0
[    1.416882]  pcmcia_device_probe from really_probe+0xc8/0x3b4
[    1.417070]  really_probe from __driver_probe_device+0x9c/0x214
[    1.417255]  __driver_probe_device from driver_probe_device+0x38/0xe0
[    1.417454]  driver_probe_device from __device_attach_driver+0xa4/0x11c
[    1.417657]  __device_attach_driver from bus_for_each_drv+0x88/0xd8
[    1.417864]  bus_for_each_drv from __device_attach+0xf4/0x194
[    1.418047]  __device_attach from bus_probe_device+0x8c/0x94
[    1.418224]  bus_probe_device from device_add+0x3d0/0x894
[    1.418395]  device_add from pcmcia_device_add+0x2ec/0x3e0
[    1.418568]  pcmcia_device_add from pcmcia_card_add+0xd4/0x1a0
[    1.418756]  pcmcia_card_add from pcmcia_bus_add+0x44/0x4c
[    1.418930]  pcmcia_bus_add from socket_insert+0x12c/0x150
[    1.419103]  socket_insert from pccardd+0x398/0x44c
[    1.419257]  pccardd from kthread+0xdc/0x114
[    1.419400]  kthread from ret_from_fork+0x14/0x2c
[    1.419569] Exception stack(0xc48a5fb0 to 0xc48a5ff8)
[    1.419735] 5fa0:                                     00000000 00000000 00000000 00000000
[    1.419979] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    1.420222] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[    1.420501] Code: 13570000 e1a06000 0a000043 e3a03002 (e5c03000)
[    1.420874] ---[ end trace 0000000000000000 ]---

---
# bad: [7643a9ca9f8e08f71e15f89dd74863635e981e03] ARM: pxa: convert to multiplatform
# good: [3123109284176b1532874591f7c81f3837bbdc17] Linux 5.18-rc1
git bisect start 'HEAD' 'v5.18-rc1'
# good: [9b03d7f95bd4d97101ecb8ea1e822103b81fdb2d] ARM: pxa: mainstone-wm97xx: use gpio lookup table
git bisect good 9b03d7f95bd4d97101ecb8ea1e822103b81fdb2d
# good: [764063eee7620ea9abb940068a7ad0e7f9efa1b6] cpufreq: pxa3: move clk register access to clk driver
git bisect good 764063eee7620ea9abb940068a7ad0e7f9efa1b6
# good: [5153474f0a4388b7ddb59add4be73bfb42b2007f] ARM: mmp: remove tavorevb board support
git bisect good 5153474f0a4388b7ddb59add4be73bfb42b2007f
# good: [2746f7c78b428c8b01b691a29a972c08101ae343] ARM: PXA: fix multi-cpu build of xsc3
git bisect good 2746f7c78b428c8b01b691a29a972c08101ae343
# good: [73d5106e9489464eac84362705e93bcf3b376123] ARM: pxa: remove support for MTD_XIP
git bisect good 73d5106e9489464eac84362705e93bcf3b376123
# first bad commit: [7643a9ca9f8e08f71e15f89dd74863635e981e03] ARM: pxa: convert to multiplatform