Hi Mark,

On Tue, 11 Mar 2025 at 22:33, Mark Brown [off-list ref] wrote:

On Tue, Mar 11, 2025 at 11:06:56PM +0200, Mike Rapoport wrote:

quoted

On Tue, Mar 11, 2025 at 05:51:06PM +0000, Mark Brown wrote:

quoted

This patch appears to be causing breakage on a number of 32 bit arm
platforms, including qemu's virt-2.11,gic-version=3.  Affected platforms
die on boot with no output, a bisect with qemu points at this commit and
those for physical platforms appear to be converging on the same place.

quoted

Can you share how this can be reproduced with qemu?

https://lava.sirena.org.uk/scheduler/job/1184953

Turns out it's actually producing output on qemu:

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 6.14.0-rc6-next-20250311 (tuxmake@tuxmake) (arm-linux-gnueabihf-gcc (Debian 13.3.0-5) 13.3.0, GNU ld (GNU Binutils for Debian) 2.43.1) #1 SMP @1741691801
[    0.000000] CPU: ARMv7 Processor [414fc0f0] revision 0 (ARMv7), cr=10c5387d
[    0.000000] CPU: div instructions available: patching division code
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction cache
[    0.000000] OF: fdt: Machine model: linux,dummy-virt
[    0.000000] random: crng init done
[    0.000000] earlycon: pl11 at MMIO 0x09000000 (options '')
[    0.000000] printk: legacy bootconsole [pl11] enabled
[    0.000000] Memory policy: Data cache writealloc
[    0.000000] efi: UEFI not found.
[    0.000000] cma: Reserved 64 MiB at 0x00000000

- I'd only been sampling the logs for the physical platforms, none of
which had shown anything.

Hangs that early need "earlycon", which the qemu boot above does have.

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds