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Date:      Sat, 19 Jan 2008 00:32:48 -1000
From:      Parv <parv@pair.com>
To:        John Baldwin <jhb@freebsd.org>
Cc:        freebsd-stable@freebsd.org
Subject:   Re: PCI MSI (was Re: What current Dell Systems are supported/work)
Message-ID:  <20080119103248.GA1317@holstein.holy.cow>
In-Reply-To: <200801181010.04965.jhb@freebsd.org>
References:  <DB4DDB04-1ADE-4C36-A846-BB6B7C12EB1B@patmedia.net> <20080118103006.GA1443@holstein.holy.cow> <200801180850.32062.jhb@freebsd.org> <200801181010.04965.jhb@freebsd.org>

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in message <200801181010.04965.jhb@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.


  - Parv

-- 




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