[PATCH v4 1/2] kexec: Consolidate machine_kexec_mask_interrupts() implementation
Thomas Gleixner
tglx at linutronix.de
Sun Dec 1 03:19:34 PST 2024
On Sat, Nov 30 2024 at 20:08, Eliav Farber wrote:
> On 11/29/2024 3:30 PM, Thomas Gleixner wrote:
>> Looking deeper. This function actually cannot be called from this
>> context. It does:
>>
>> irq_get_desc_buslock(irq, &flags, 0);
>>
>> which means for any interrupt which has an actual buslock implementation
>> it will end up in a sleepable function and deadlock in the worst case.
>>
>> Marc?
> I will wait for Marc's response regarding this issue.
> Regardless, if any changes are required, I believe it would be better
> to address them in a separate patch, as this behavior existed before my
> modification.
Correct.
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