svn commit: r198659 - in stable/8/sys: .
contrib/dev/acpica contrib/pf dev/pci dev/usb/controller dev/xen/xenpci
flo at smeets.im
Tue Nov 17 12:23:17 UTC 2009
On 10/30/09 12:25 AM, Andrew Thompson wrote:
> Author: thompsa
> Date: Thu Oct 29 23:25:52 2009
> New Revision: 198659
> URL: http://svn.freebsd.org/changeset/base/198659
> MFC r198151
> Workaround buggy BIOS code in USB regard. By doing the BIOS to OS handover for
> all host controllers at the same time, we avoid problems where the BIOS will
> actually write to the USB registers of all the USB host controllers every time
> we handover one of them, and consequently reset the OS programmed values.
this commit causes some of my servers (all of the same type), to detect
interrupt storms on irq11:
interrupt storm detected on "irq11:"; throttling interrupt source
and it does not stop logging these.
flo at relay3:~ 6 > vmstat -i
interrupt total rate
irq0: clk 229846 990
irq4: uart0 596 2
irq5: sis0 2850 12
irq8: rtc 29595 127
irq11: sis3 115799 499
irq14: ata0 2071 8
Total 380757 1641
sis3 is not used and not even up.
Setting sysctl hw.intr_storm_threshold to high values e.g. 10000 does
The kernels on these servers do not have usb compiled in at all, but
it's enabled in the BIOS.
Setting hw.pci.usb_early_takeover=0 "fixes" the problem.
Is this expected?
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