在 7/4/2016 4:48 AM, sunnydrake 写道:

Thanks for reply.
On 03.07.16 17:26, Wan Zongshun wrote:

在 7/3/2016 8:59 AM, sunnydrake 写道:

[description]
working in kernel 3.9
Oops in current 4.4.0-28,4.7.0-040700rc5
kernel options ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1 workaround to fix ivrs table
cause kernel Oops on boot

Do you mean "ivrs_ioapic[7]=00:14.0  ivrs_ioapic[8]=00:00.1" are workable at kernel-3.9 but failed in kernel-4.4?

1)yes kernel 3.9 boots ok with ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1
kernels 4.4 and 4.7 fall to Oops

[bug]
oops:
short oops text
AMD-Vi: Completion_wait loop timed Out
BUG: unable to handle kernel NULL pointer dereference at 000..03e
... irq_pm_install_action+0x1c/0xd0
full oops image text
http://img.ctrlv.in/img/16/07/03/577863055370c.jpg

[additional info]
dmesg|grep AMD-Vi without ivrs_ioapic[8]=00:00.1

This log is from the kernel print without ivrs_ioapic[8]=00:00.1?
Why not provide your kernel log with "ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1" ?
Full kernel log is better.

2) yes,  because with ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1 kernels are not bootable. Screen of Oops http://img.ctrlv.in/img/16/07/03/577863055370c.jpg (this with params ivrs_ioapic[7]=00:14.0  ivrs_ioapic[8]=00:00.1 ). if you need something another like kdump, i can provide.

If you can provide a full kernel log with ivrs_ioapic[7]=00:14.0 ivrs_ioapic[8]=00:00.1, that is better.
I checked your crash log, and find some things related to i8042 maybe wrong, it is ps2 relation driver, is it necessary in your system? can you disable this i8042 firsty to check if your issue is reasoned from it?