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Architectures and Processors forum ICH_EISR_EL2 use-cases

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ICH_EISR_EL2 use-cases

Jorge 11 months ago

Is there any use case where this register (ICH_EISR_EL2) can report more than one outstanding EOI?

I don't really understand why we have 16-bit wide register (one bit per LR) if there is no use-case. I'm sure I'm missing something.

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Jorge 11 months ago +1 verified

Sharing some experiments: do { u32 irqstat = gic_read_iar(); u32 irqnr = gic_iar_irqnr(irqstat); if (irqnr != GICC_INT_SPURIOUS) { ... delay ... gic_write_eoir(irqstat); } else { break;...