[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] MSI causing softpanics in guest
On 3.3.0 you need to specify msi=1 on Xen's command line to enable MSI. In xen-unstable, MSI support is always enabled. I changed a check in evtchn_get_xen_pirq() into a BUG_ON() as it looks to me like it should never trigger. Jan Beulich was the original authour of that function -- cc'ed in case he can indicate whether I've actually broken the function. :-) -- Keir On 19/9/08 20:53, "Anish Bhatt" <anish@xxxxxxxxxxxxx> wrote: > lspci shows MSI enabled for PCI device. PCI passthrough works fine. > However, as soon as the MSI driver for card is insmodded, kernel panics. > This is on xen-unstable. Tried the same with xen-3.3.0 which is > supposed to have MSI passthrough, but the same guest shows MSI as disabled. > Any else seen this bug, or know of a workaround ? > > Trace is as follows : > > ------------[ cut here ]------------ > kernel BUG at > /usr/src/xen/xen-unstable.hg/linux-2.6.18-xen.hg/drivers/xen/core/evtchn.c:809> ! > invalid opcode: 0000 [#1] > SMP > Modules linked in: nfemsg nfdvnet ipv6 binfmt_misc dm_mod nfe usbcore > ext3 jbd processor fuse > CPU: 0 > EIP: 0061:[<c02487f5>] Tainted: GF VLI > EFLAGS: 00210097 (2.6.18.8-xen #2) > EIP is at evtchn_get_xen_pirq+0x35/0x40 > eax: ffffffff ebx: 00000002 ecx: c0372e60 edx: 00000000 > esi: c2103560 edi: c03d3080 ebp: 000004f9 esp: ed385dac > ds: 007b es: 007b ss: 0069 > Process modprobe (pid: 2590, ti=ed384000 task=ed7b1100 task.ti=ed384000) > Stack: c0248aef 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > 00000000 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 > Call Trace: > [<c0248aef>] startup_pirq+0x3f/0x250 > [<c0150b50>] setup_irq+0x160/0x1b0 > [<ee0dd270>] nfe_interrupt_handler+0x0/0x30 [nfemsg] > [<c0150c43>] request_irq+0xa3/0xc0 > [<ee02c8ad>] nfemsg_module_init+0x8ad/0x133e [nfemsg] > [<c030531b>] cond_resched+0x2b/0x40 > [<c0305369>] wait_for_completion+0x19/0xf0 > [<c0142818>] sys_init_module+0x148/0x1b50 > [<c010595f>] syscall_call+0x7/0xb > Code: 00 00 89 d1 d3 e0 85 05 c4 2c 42 c0 74 1a 8b 14 95 c0 c0 44 c0 89 > d0 c1 e8 1c 83 e8 01 75 0c c1 ea 0c 81 e2 ff ff 00 00 89 d0 c3 <0f> 0b > 29 03 a4 f1 32 c0 eb ea 90 83 ec 08 89 74 24 04 89 c6 a1 > EIP: [<c02487f5>] evtchn_get_xen_pirq+0x35/0x40 SS:ESP 0069:ed385dac > ### card [0] start: host progs ### > -bash-3.2# > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: ------------[ cut here ]------------ > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: kernel BUG at > /usr/src/xen/xen-unstable.hg/linux-2.6.18-xen.hg/drivers/xen/core/evtchn.c:809> ! > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: invalid opcode: 0000 [#1] > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: SMP > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: CPU: 0 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: EIP is at evtchn_get_xen_pirq+0x35/0x40 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: eax: ffffffff ebx: 00000002 ecx: c0372e60 edx: 00000000 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: esi: c2103560 edi: c03d3080 ebp: 000004f9 esp: ed385dac > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: ds: 007b es: 007b ss: 0069 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: Process modprobe (pid: 2590, ti=ed384000 task=ed7b1100 > task.ti=ed384000) > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: Stack: c0248aef 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: 00000000 00000000 00000000 00000000 00000000 00000000 > 00000000 00000000 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: Call Trace: > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: Code: 00 00 89 d1 d3 e0 85 05 c4 2c 42 c0 74 1a 8b 14 95 c0 c0 > 44 c0 89 d0 c1 e8 1c 83 e8 01 75 0c c1 ea 0c 81 e2 ff ff 00 00 89 d0 c3 > <0f> 0b 29 03 a4 f1 32 c0 eb ea 90 83 ec 08 89 74 24 04 89 c6 a1 > > Message from syslogd@drake at Sep 19 15:36:44 ... > kernel: EIP: [<c02487f5>] evtchn_get_xen_pirq+0x35/0x40 SS:ESP > 0069:ed385dac _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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