[PATCH 05/10] accel/ivpu: Fix potential infinite loops in IRQ handlers

[Jacek Lawrynowicz]

On 05.01.2024 17:35, Jeffrey Hugo wrote:
> On 1/5/2024 4:22 AM, Jacek Lawrynowicz wrote:
>> Limit number of iterations in ivpu_mmu_irq_evtq_handler() and
>> ivpu_ipc_irq_handler().
> 
> "potential infinite loops" sounds like something that has not been observed.  Has a problem actually occurred?
> 
> Are you concerned that the FW is broken and spamming Linux with events?
> 
> Why a limit of 100 events?  Seems arbitrary.
> 
> I suspect threaded irqs might be useful here, but it is hard to tell.

No, these problems were not observed yet.
I think that the small size of the IPC/MMU queues and relatively fast host CPU prevent the host from being overloaded.
Maybe let's drop this patch until there is a real issue then :)