Date: Fri, 17 Oct 2014 13:24:34 +0000 From: Ashutosh Kumar <mrashutosh@hotmail.com> To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: io-apic interrupt migration on bhyve Message-ID: <SNT150-W7ABD0AAB97FA85DFF5464DFA80@phx.gbl>
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Hi, I am witnessing some strange behavior w.r.t io-apic interrupt migration on bhyve. I have below assignment for a level triggered interrupt: io-apic pin - p cpu vector - v cpu id - 0 when this interrupt is migrated to cpu 1 then the assignment is as below io-apic pin - p cpu vector - v1 cpu id - 1 When VM boots up then OS is getting interrupts for io-apic pin - p cpu vector - v1 cpu id - 0 Added debug prints in vioapic_write function to check the values written to io-apic rte for this pin and then VM gets correct interrupts i.e (vector v, cpu 0 ) before the interrupts are migrated and (vector v1, cpu 1) after the migration When prints are removed then the problem happens and we see interrupts for (vector v1 and cpu 0). RegardsAshutosh
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