Messages in this thread | | | Date | Wed, 21 Apr 2021 18:15:16 +0100 | From | Sudeep Holla <> | Subject | Re: [PATCH 2/2] ACPI: irq: Prevent unregistering of GIC SGIs |
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On Wed, Apr 21, 2021 at 05:43:17PM +0100, Marc Zyngier wrote: > When using ACPI on arm64, which implies the GIC IRQ model, no > table should ever provide a GSI number in the range [0:15], > as these are reserved for IPIs. > > However, drivers tend to call acpi_unregister_gsi() with any > random GSI number provided by half baked tables, which results > in an exploding kernel when its IPIs have been unconfigured. > > In order to catch this, check for the silly case early, warn > that something is going wrong and avoid the above disaster. >
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Just curious if this is just precaution or do we have a platform doing something stupid like this ?
-- Regards, Sudeep
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