SIO Interrupt storms and unhandled interrupts
jhb at FreeBSD.org
Fri Sep 10 11:06:54 PDT 2004
On Thursday 09 September 2004 05:41 pm, M. Warner Losh wrote:
> In message: <188.8.131.52.0.20040909154407.08b1a9f8 at 184.108.40.206>
> Mike Tancsa <mike at sentex.net> writes:
> : Thanks for the response! We found a different solution /
> : approach which seems to work on both RELENG_4 and RELENG_5. The problem
> : is that the modem is not being seen as a PCI / PUC device and instead is
> : being seen as an ISA SIO device ?? The following RELENG_5 and RELENG_4
> : patches seem to fix the problem. I wonder if the other modems listed in
> : sio.c suffer the same fate ?
> : Also fixed in this are those "cant re-use leafs" at bootup time. The
> : modem is seen as a PUC device now.... At the bottom is a diff between
> : the boot -v
> I like this fix! I'll see if I can find to commit it.
Note that hacking sio to not use INTR_FAST would have had the same result.
Note that in his dmesg diff, sio4 has to fall back to normal interrupt mode.
John Baldwin <jhb at FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve" = http://www.FreeBSD.org
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