On 19/07/2022 16:53, Guilherme G. Piccoli wrote:

The altera_edac panic notifier performs some data collection with
regards errors detected; such code relies in the regmap layer to
perform reads/writes, so the code is abstracted and there is some
risk level to execute that, since the panic path runs in atomic
context, with interrupts/preemption and secondary CPUs disabled.

Users want the information collected in this panic notifier though,
so in order to balance the risk/benefit, let's skip the altera panic
notifier if kdump is loaded. While at it, remove a useless header
and encompass a macro inside the sole ifdef block it is used.

Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>

---

V2:
- new patch, based on the discussion in [0].
[0] https://lore.kernel.org/lkml/62a63fc2-346f-f375-043a-fa21385279df@igalia.com/ (local)

 drivers/edac/altera_edac.c | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)
[...]

Hey Tony / Dinh, do you think this patch is good, based on the
discussion we had [0] last iteration?

Thanks in advance,


Guilherme


[0]
https://lore.kernel.org/lkml/599b72f6-76a4-8e6d-5432-56fb1ffd7e0b@igalia.com/ (local)