[PATCH v2 3/6] panic: Allow postponing pre-kdump notifiers

[sashiko-bot at kernel.org]

> Provide an escape hatch for debugging kdump failures that may involve
> pre-kdump callbacks. Add panic_pre_kdump_postpone to skip their early
> invocation in crash core without consuming the once-only guard.
> 
> When enabled, the chain runs before kdump only when
> crash_kexec_post_notifiers is also enabled. Leave the late panic call
> unchanged so callbacks remain eligible if that path is reached.
> Skipping the callbacks may prevent hypervisor crash handling.
> 
> Suggested-by: Guilherme G. Piccoli <gpiccoli at igalia.com>
> Link: https://lore.kernel.org/r/bc0bdd14-5e6a-0676-cd04-14fb0bb93cd5@igalia.com
> Signed-off-by: Zack Rusin <zack.rusin at broadcom.com>

Sashiko has reviewed this patch and found no issues. It looks great!

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