On Thu, Aug 24, 2023 at 08:30:32AM -0700, Douglas Anderson wrote:

Up until now we've been using the generic (weak) implementation for
kgdb_roundup_cpus() when using kgdb on arm64. Let's move to a custom
one. The advantage here is that, when pseudo-NMI is enabled on a
device, we'll be able to round up CPUs using pseudo-NMI. This allows
us to debug CPUs that are stuck with interrupts disabled. If
pseudo-NMIs are not enabled then we'll fallback to just using an IPI,
which is still slightly better than the generic implementation since
it avoids the potential situation described in the generic
kgdb_call_nmi_hook().

Co-developed-by: Sumit Garg <redacted>
Signed-off-by: Sumit Garg <redacted>
Signed-off-by: Douglas Anderson <dianders@chromium.org>

From a kgdb point of view:
Reviewed-by: Daniel Thompson <redacted>


Daniel.

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