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Date: Fri, 29 Dec 2017 09:07:45 +0100 (CET)
From: Thomas Gleixner <tglx@linutronix.de>
To: Alexandru Chirvasitu <achirvasub@gmail.com>
cc: Dou Liyang <douly.fnst@cn.fujitsu.com>, Pavel Machek <pavel@ucw.cz>,
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Subject: Re: PROBLEM: 4.15.0-rc3 APIC causes lockups on Core 2 Duo laptop
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On Thu, 28 Dec 2017, Alexandru Chirvasitu wrote:
> On Fri, Dec 29, 2017 at 12:36:37AM +0100, Thomas Gleixner wrote:
> > On Thu, 28 Dec 2017, Alexandru Chirvasitu wrote:
> > 
> > > Attached, but heads up on this: when redirecting the output of lspci
> > > -vvv to a text file as root I get
> > > 
> > > pcilib: sysfs_read_vpd: read failed: Input/output error
> > > 
> > > I can find bugs filed for various distros to this same effect, but
> > > haven't tracked down any explanations.
> > 
> > Weird, but the info looks complete.
> > 
> > Can you please add 'pci=nomsi' to the 4.15 kernel command line and see
> > whether that works?
> 
> It does (emailing from that successful boot as we speak). I'm on a
> clean 4.15-rc5 (as in no patches, etc.). 
> 
> This was also suggested way at the top of this thread by Dexuan Cui
> for 4.15-rc3 (where this exchange started), and it worked back then
> too.

I missed that part of the conversation. Let me stare into the MSI code
again.

Thanks,

	tglx