On Fri, Apr 22, 2022 at 7:05 PM Guenter Roeck linux@roeck-us.net wrote:
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-multi...
Unfortunately that crashes for me when trying to boot from ide. Bisect points to the last patch of the series.
Thanks a lot for testing and the perfect bug report!
[ 1.403715] 8<--- cut here --- [ 1.403848] Unable to handle kernel paging request at virtual address feeb000e [ 1.404097] [feeb000e] *pgd=00000000
Ok, this is the PCI I/O space area, which starts at 0xfee00000, clearly the way I/O space gets mapped changed here. I don't yet see what happened, but it should be straightforward to find from here.
[ 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
I'll back out this patch for now while investigating further.
Which machine did you hit this on? Is this on hardware or in qemu?
Arnd