PCI MSI (was Re: What current Dell Systems are supported/work)
parv at pair.com
Sat Jan 19 02:31:34 PST 2008
in message <200801181010.04965.jhb at freebsd.org>,
wrote John Baldwin thusly...
> On Friday 18 January 2008 08:50:31 am John Baldwin wrote:
> > On Friday 18 January 2008 05:30:06 am Parv wrote:
> > > There was no page fault or trap 12 message when the panic
> > > happened. After some of messages are printed (as in dmesg),
> > > kdb is entered ...
> > >
> > > ioapic0: Assigning PCI IRQ 23 to local APIC 1
> > > msi: Assigning MSI IRQ 256 to local APIC 0
> > > panic: blockabke sleep block (sleep mutex) msi @ /misc/src-6/sys/i386/i386/msi.c:381
> > > cpuid: 0
> > > kdb: stack backtrace
> > > kbd_backtrace( c0adc531,0,c0abaafd,c1020c34,c0bab700,...) at ... \
> > > [I skipped from here to the "db>" prompt]
> > > Tomorrow, rather later today, I will type up the "trace"
> > > output. Please let me know if you would like to see any other
> > > output that I could possibly provide.
> > This is good enough for me to see the bug, I'll work on fixing
> > it. There are some locking changes in the x86 interrupt code I
> > need to MFC.
> Try this patch:
Thanks much John. Your patch allowed my computer to resume normal
operation without disabling MSI via hw.pci.enable_msi*.
Lest I forget, mahalo for saving me from typing up the trace output.
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