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Date:   Sat, 22 Jun 2019 15:27:42 +0200 (CEST)
From:   Thomas Gleixner <tglx@linutronix.de>
To:     Octavio Alvarez <octallk1@alvarezp.org>
cc:     Linus Torvalds <torvalds@linux-foundation.org>,
        linux-kernel@vger.kernel.org, x86@kernel.org,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
        "H. Peter Anvin" <hpa@zytor.com>,
        Marc Zyngier <marc.zyngier@arm.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        "Steven Rostedt (VMware)" <rostedt@goodmis.org>,
        Jiang Biao <jiang.biao2@zte.com.cn>,
        Yi Wang <wang.yi59@zte.com.cn>,
        Dou Liyang <douly.fnst@cn.fujitsu.com>,
        Nicolai Stange <nstange@suse.de>
Subject: Re: PROBLEM: Marvell 88E8040 (sky2) fails after hibernation
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Message-ID: <alpine.DEB.2.21.1906221523340.5503@nanos.tec.linutronix.de>
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Octavio,

On Wed, 19 Jun 2019, Octavio Alvarez wrote:
> On 6/13/19 3:45 PM, Thomas Gleixner wrote:
> > Can you please provide the content of /proc/interrupts with the driver
> > loaded and working after boot (don't hibernate) for the following kernels:
> > 
> 
> $ cat linux-master-after-boot.txt
>            CPU0       CPU1       CPU2       CPU3

>  27:          1          0          0          0   PCI-MSI 3145728-edge eth0

> >    Linus upstream + revert
> 
> $ cat linux-master-reverted-after-boot.txt
>            CPU0       CPU1       CPU2       CPU3

>  27:          1          0          0          0   PCI-MSI 3145728-edge eth0
 
> Meanwhile, here it is for 4.9, which is the latest Debian-provided kernel and
> worked:
> 
> $ cat linux-4.9-after-boot.txt
>            CPU0       CPU1       CPU2       CPU3

>  24:          1          0          0          0   PCI-MSI 3145728-edge eth0
 
> I will keep trying 4.14, unless you say otherwise.

It would be interesting though I don't expect too much data.

So all of the above use PCI/MSI. That's at least a data point. I need to
stare into that driver again to figure out why this might make a
difference, but right now I'm lost.

Thanks,

	tglx