From: "Francis Greaves" <[email protected]> To: "Francis Greaves" <[email protected]>, "centos-virt" <[email protected]> Sent: Sunday, 3 July, 2016 11:19:49 Subject: Re: [CentOS-virt] PCI Passthrough not working
Further to my last post, I have removed the xen-pciback module from the Dom0 kernel, and reloaded it as modprobe xen-pciback passthrough=1 I now have the PCI device on the DomU matching the Dom0 Device usb usb1: SerialNumber: 0000:00:1a.0 instead of 0000:00:00.0 However I now have this error ehci_hcd 0000:00:1a.0: Unlink after no-IRQ? Controller is probably using the wrong IRQ. does this give a clue as to what is going on? Many thanks Francis More information: In the Dom0 I get this when booting the DomU, even with irwpoll in the DomU kernel line xen_pciback: xen-pciback[0000:00:1a.0] IRQ line is not shared with other domains. Turning ISR off Jul 03 11:31:23 antares.fsoft.nnet kernel: irq 18: nobody cared (try booting with the "irqpoll" option) Jul 03 11:31:23 antares.fsoft.nnet kernel: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.18.34-20.el7.x86_64 #1 Jul 03 11:31:23 antares.fsoft.nnet kernel: Hardware name: Dell Inc. PowerEdge T430/0975F3, BIOS 1.5.4 10/05/2015 Jul 03 11:31:23 antares.fsoft.nnet kernel: 0000000000000000 ffff8803bc603d88 ffffffff81653783 ffff8803b223e400 Jul 03 11:31:23 antares.fsoft.nnet kernel: ffff8803b223e48c ffff8803bc603db8 ffffffff810c6776 ffff8803bc613340 Jul 03 11:31:23 antares.fsoft.nnet kernel: ffff8803b223e400 0000000000000012 0000000000000000 ffff8803bc603e08 Jul 03 11:31:23 antares.fsoft.nnet kernel: Call Trace: Jul 03 11:31:23 antares.fsoft.nnet kernel: <IRQ> [<ffffffff81653783>] dump_stack+0x64/0x82 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c6776>] __report_bad_irq+0x36/0xd0 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c6c86>] note_interrupt+0x226/0x270 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff813e71cc>] ? add_interrupt_randomness+0x3c/0x1f0 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c43ec>] handle_irq_event_percpu+0xcc/0x1e0 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c453b>] handle_irq_event+0x3b/0x60 Message from syslogd@antares at Jul 3 11:31:23 ... kernel:Disabling IRQ #18 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c709a>] handle_fasteoi_irq+0x7a/0x130 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810c394b>] generic_handle_irq+0x2b/0x40 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff813a2102>] evtchn_fifo_handle_events+0x162/0x170 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff8139efb0>] __xen_evtchn_do_upcall+0x50/0x90 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff813a0d67>] xen_evtchn_do_upcall+0x37/0x50 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff8165c05e>] xen_do_hypervisor_callback+0x1e/0x40 Jul 03 11:31:23 antares.fsoft.nnet kernel: <EOI> [<ffffffff810013aa>] ? xen_hypercall_sched_op+0xa/0x20 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810013aa>] ? xen_hypercall_sched_op+0xa/0x20 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff8100b330>] ? xen_safe_halt+0x10/0x20 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff8101ea94>] ? default_idle+0x24/0xf0 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff8101f49f>] ? arch_cpu_idle+0xf/0x20 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff810adc92>] ? cpu_startup_entry+0x312/0x3e0 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff816445c7>] ? rest_init+0x77/0x80 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff81d77130>] ? start_kernel+0x4d0/0x4dd Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff81d76a50>] ? set_init_arg+0x55/0x55 Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff81d765ee>] ? x86_64_start_reservations+0x2a/0x2c Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff81d7a7cc>] ? xen_start_kernel+0x5a9/0x5b5 Jul 03 11:31:23 antares.fsoft.nnet kernel: handlers: Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffff814b0f50>] usb_hcd_irq Jul 03 11:31:23 antares.fsoft.nnet kernel: [<ffffffffa050d3e0>] xen_pcibk_guest_interrupt [xen_pciback] Jul 03 11:31:23 antares.fsoft.nnet kernel: Disabling IRQ #18 ========================================================================= does that help? Francis
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