Messages in this thread | | | From | Thomas Gleixner <> | Subject | Re: [PATCH v3] genirq: avoid long loops in handle_edge_irq | Date | Fri, 13 Oct 2023 10:44:36 +0200 |
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On Thu, Oct 12 2023 at 21:39, Wei Gong wrote: > O Mon, Oct 09, 2023 at 04:32:10PM +0200, Thomas Gleixner wrote: >> Now $COND is not true due to the affinity change and the edge handler >> returns. As a consequence nothing acks the device and no further >> interrupts are sent by the device. >> >> That might not be true for your case, but that's a generic function and the >> zoo of hardware which uses that is massive. >> >> So no, we are not taking a risk here. >> >> Thanks, >> >> tglx >> >> > By maintaining the original loop exit condition, if a mask mismatch is > detected within the loop, we will not perform the unmask_irq operation. > Instead, we will wait until the loop exits before executing unmask_irq. > Could this approach potentially solve the issue of lost interrupts?
How so exactly?
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