[Qemu-ppc] Disabling IRQ error

[Xie Xianshan]

hi everyone,

I`m getting the nobody cared disabling IRQ error, when i raised external 
interrupts IRQ3 to the Openpic in QEMU.
(Actually, any external interrupts irq i raised can reproduce this 
error, but internal interrupts work fine)

And this IRQ3 is sharing irq with usb card.

I have tried to resolve this issue as follows, but nothing changed.
 1)tried to boot with "irqpoll" option.
 2)tried to stop raising the irq for usb card.
 3)tried to boot with "kernel_irqchip" option

Related log from dmesg:
[ 2079.800787] irq 19: nobody cared (try booting with the "irqpoll" option)
[ 2079.800891] Call Trace:
[ 2079.801303] [d7ff3f40] [c0007780] show_stack+0x7c/0x1a0 (unreliable)
[ 2079.801398] [d7ff3f80] [c007ad48] __report_bad_irq+0x5c/0xe0
[ 2079.801439] [d7ff3fa0] [c007af58] note_interrupt+0x18c/0x240
[ 2079.801466] [d7ff3fd0] [c007be04] handle_fasteoi_irq+0xf8/0x158
[ 2079.801492] [d7ff3ff0] [c000d9d4] call_handle_irq+0x18/0x28
[ 2079.801582] [d7ff5ec0] [c0004df0] do_IRQ+0xf0/0x16c
[ 2079.801609] [d7ff5ee0] [c000e9bc] ret_from_except+0x0/0x18
[ 2079.801652] --- Exception: 501 at __do_softirq+0x94/0x18c
[ 2079.801664]     LR = __do_softirq+0x54/0x18c
[ 2079.801698] [d7ff5ff0] [c000d9ac] call_do_softirq+0x14/0x24
[ 2079.801725] [d788fc50] [c0004bc0] do_softirq+0x74/0xa0
[ 2079.801751] [d788fc70] [c004350c] irq_exit+0x3c/0x8c
[ 2079.801775] [d788fc80] [c0004e3c] do_IRQ+0x13c/0x16c
[ 2079.801800] [d788fca0] [c000e9bc] ret_from_except+0x0/0x18
[ 2079.802566] --- Exception: 501 at bbc_dma_exec+0xa08/0xef4 [bbc_driver]
[ 2079.802580]     LR = bbc_dma_exec+0x970/0xef4 [bbc_driver]
[ 2079.802620] [d788fdf0] [d94d4f28] 
bbc_ioctl_dma_read_write+0x2bc/0x464 [bbc_driver]
[ 2079.802661] [d788fe70] [d94cae84] bbc_ioctl+0x2a0/0x36c [bbc_driver]
[ 2079.802754] [d788feb0] [c00d1f04] do_vfs_ioctl+0x6b8/0x760
[ 2079.802782] [d788ff10] [c00d2014] sys_ioctl+0x68/0xa8
[ 2079.802807] [d788ff40] [c000e368] ret_from_syscall+0x0/0x3c
[ 2079.802891] --- Exception: c01 at 0xfaffda8
[ 2079.802901]     LR = 0xfb8ec20
[ 2079.802936] handlers:
[ 2079.803034] [<c0268d70>] (usb_hcd_irq+0x0/0xac)
[ 2079.803120] [<d94cc1bc>] (bbc_interrupt_handler+0x0/0x65c [bbc_driver])
[ 2079.803181] Disabling IRQ #19

And interrupt information from /proc/interrupts and stat:
# cat /proc/interrupts
           CPU0
 18:       6923    OpenPIC         Level        ohci_hcd:usb2, 
ohci_hcd:usb3, drvbbc_ldc
 19:     100001    OpenPIC         Level        ehci_hcd:usb1, drvbbc
 20:          0    OpenPIC         Edge         internal_error
 21:          0    OpenPIC         Level        NMI
 22:          0    OpenPIC         Level        SP_I2C_Handler
 42:       1148    OpenPIC         Level        serial
 43:        174    OpenPIC         Level        i2c-mpc, i2c-mpc
 59:          0    OpenPIC         Level        fsl_espi
 72:      51888    OpenPIC         Level        mmc0
LOC:     143330   Local timer interrupts
SPU:          0   Spurious interrupts
CNT:          0   Performance monitoring interrupts
MCE:          0   Machine check exceptions

#cat /proc/stat
cpu  4929 0 5784 353692 736 0 460 0 0 0
cpu0 4929 0 5784 353692 736 0 460 0 0 0
intr 394342 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6929 100001 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1574 174 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 53202 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
ctxt 357415
btime 1378108122
processes 1648
procs_running 1
procs_blocked 0
softirq 329977 0 154040 0 0 1145 0 17497 0 337 156958


I`ve no idea what the problem is and how to fix it.
Do you have experience to this?

Thanks in advance for any advice.


Simen