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Mårten Lindahl 46870eea54 ARM: 9317/1: kexec: Make smp stop calls asynchronous

[ Upstream commit 8922ba71c969d2a0c01a94372a71477d879470de ]

If a panic is triggered by a hrtimer interrupt all online cpus will be
notified and set offline. But as highlighted by commit 19dbdcb8039c
("smp: Warn on function calls from softirq context") this call should
not be made synchronous with disabled interrupts:

 softdog: Initiating panic
 Kernel panic - not syncing: Software Watchdog Timer expired
 WARNING: CPU: 1 PID: 0 at kernel/smp.c:753 smp_call_function_many_cond
   unwind_backtrace:
     show_stack
     dump_stack_lvl
     __warn
     warn_slowpath_fmt
     smp_call_function_many_cond
     smp_call_function
     crash_smp_send_stop.part.0
     machine_crash_shutdown
     __crash_kexec
     panic
     softdog_fire
     __hrtimer_run_queues
     hrtimer_interrupt

Make the smp call for machine_crash_nonpanic_core() asynchronous.

Signed-off-by: Mårten Lindahl <marten.lindahl@axis.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2023-09-23 11:09:58 +02:00

alpha

alpha: remove __init annotation from exported page_is_ram()

2023-08-16 18:22:03 +02:00

arc

ARC: atomics: Add compiler barrier to atomic operations...

2023-09-19 12:23:00 +02:00

arm

ARM: 9317/1: kexec: Make smp stop calls asynchronous

2023-09-23 11:09:58 +02:00

arm64

arm64: dts: qcom: sm8250-edo: correct ramoops pmsg-size