[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] Hypervisor crash setting up GIC (arm32)
On Tue, 2014-04-22 at 18:26 +0100, Thomas Leonard wrote: > On 22 April 2014 15:11, Thomas Leonard <talex5@xxxxxxxxx> wrote: > > Hi guys, > > > > I've got a bit further and I'm now trying to get Mini-OS to handle > > interrupts. [...] my IRQ handler keeps being called (continuously) > > with spurious interrupts (interrupt 1023). If anyone knows what might cause > > that, let me know! > > For reference, the problem here was this code: > > gic_disable_interrupts(&gic); > gic_cpu_set_priority(&gic, 0xff); > gic_enable_interrupt(&gic, EVENTS_IRQ /* interrupt number */, 0x1 > /*cpu_set*/, 1 /*level_sensitive*/, 0 /* ppi */); > gic_enable_interrupt(&gic, VIRTUALTIMER_IRQ /* interrupt number > */, 0x1 /*cpu_set*/, 1 /*level_sensitive*/, 1 /* ppi */); > gic_enable_interrupts(&gic); > > As soon as EVENTS_IRQ was enabled in gic_enable_interrupt, the IRQ > handler got called continuously with spurious interrupts and no > progress could be made. Stefano, weren't the Galois guys seeing something similar? You fixed it somewhere in a pending series IIRC? > > The solution is to call gic_enable_interrupts *before* enabling the > individual interrupts. > > The patch is on my Mini-OS branch here: > > https://github.com/talex5/xen/tree/minios-arm-port > > _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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