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
--
As long as the music's loud enough, we won't hear the world falling apart.
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