Date: Thu, 17 Jan 2008 15:20:24 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Vivek Khera <vivek@khera.org>, Parv <parv@pair.com> Subject: Re: PCI MSI (was Re: What current Dell Systems are supported/work) Message-ID: <200801171520.25555.jhb@freebsd.org> In-Reply-To: <20080117110517.GA3128@holstein.holy.cow> References: <DB4DDB04-1ADE-4C36-A846-BB6B7C12EB1B@patmedia.net> <70AABDAF-1925-4DBE-88A2-976CFBC55C5E@khera.org> <20080117110517.GA3128@holstein.holy.cow>
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On Thursday 17 January 2008 06:05:17 am Parv wrote: > in message <70AABDAF-1925-4DBE-88A2-976CFBC55C5E@khera.org>, > wrote Vivek Khera thusly... > > > > > > On Jan 10, 2008, at 11:09 AM, John Baldwin wrote: > > > >>> *: This is the default behavior for 7.0, I have not encountered > >>> the problem mentioned above on any 1950/2950 boxes so far I have > >>> tested. > >> > >> I will enable MSI by default on 6.x now (so will take affect for > >> 6.4). We've also enabled it by default on 6.x at work. > >> > > > > Where can one go to read up on what MSI is and how it helps us? > > > > Is enabling it just setting a sysctl? Does that have to be done > > in loader.conf or can it happen later? > > Speaking of MSI being on by default in recent 6-STABLE ... well, > that caused my ThinkPad T61 (8859-CTO) ... > > dmesg: > http://www103.pair.com/parv/comp/unix/freebsd/thinkpad-t61-8859-cto/sys/dmesg > > kernel (combined for easy perusal): > http://www103.pair.com/parv/comp/unix/freebsd/thinkpad-t61-8859-cto/cf/kern/combined/T61-SMP.debug--combined > > /boot/device.hints: > http://www103.pair.com/parv/comp/unix/freebsd/thinkpad-t61-8859-cto/cf/boot/device.hints > > > ... to go in panic[0]. So, for now I have added ... > > # Since MSI turned on by default on 2008.01.10.21.17.12 UTC, > # causes panic so disable MSI. > hw.pci.enable_msix=0 > hw.pci.enable_msi=0 > > > ... to /boot/loader.conf. > > > [0] I could not save the dump for neither do I have access to > serial console, nor could the file system be mounted. Missing > also here is a digital camera. If anybody is interested, I > could write screen down, and repeat to them. For starters, can you get the output of 'pciconf -lc'? Secondly, I really will need the kernel panic message. If it is a page fault (trap 12) then write down the faulting virtual address and the faulting IP. If you can scribble down any of the stack trace from DDB that would be helpful as well. -- John Baldwin
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