Messages in this thread | | | Subject | Re: [EXTERNAL] [tip: x86/apic] x86/io_apic: Cleanup trigger/polarity helpers | From | Suravee Suthikulpanit <> | Date | Wed, 18 Nov 2020 23:51:10 +0700 |
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Tglx,
On 11/18/20 9:06 PM, Thomas Gleixner wrote: > Suravee, > > On Wed, Nov 18 2020 at 17:29, Suravee Suthikulpanit wrote: >> On 11/17/20 9:00 AM, Suravee Suthikulpanit wrote: >> >> I might need your help debugging this issue. I'm seeing the following error: >> >> [ 14.005937] irq 29, desc: 00000000d200500b, depth: 0, count: 0, unhandled: 0 >> [ 14.006234] ->handle_irq(): 00000000eab4b6eb, handle_bad_irq+0x0/0x230 >> [ 14.006234] ->irq_data.chip(): 000000001cce6d6b, intcapxt_controller+0x0/0x120 >> [ 14.006234] ->action(): 0000000083bfd734 >> [ 14.006234] ->action->handler(): 0000000094806345, amd_iommu_int_handler+0x0/0x10 >> [ 14.006234] unexpected IRQ trap at vector 1d >> >> Do you have any idea what might have gone wrong here? > > Yes. This lacks setting up the low level flow handler. Delta patch > below. > > Thanks, > > tglx > --- > --- a/drivers/iommu/amd/init.c > +++ b/drivers/iommu/amd/init.c > @@ -2033,6 +2033,7 @@ static int intcapxt_irqdomain_alloc(stru > > irqd->chip = &intcapxt_controller; > irqd->chip_data = info->data; > + __irq_set_handler(i, handle_edge_irq, 0, "edge"); > } > > return ret; >
Yes, this fixes the issue. Now I can receive the IOMMU event log interrupts for IO_PAGE_FAULT event, which is triggered using the injection interface via debugfs.
Thanks, Suravee
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