Re: v4.10-rc8 (-rc6) boot regression on Intel desktop, does not boot after cold boots, boots after reboot

[Frederic Weisbecker]

On Thu, Feb 16, 2017 at 06:25:35PM +0100, Pavel Machek wrote:
> Hi!
> 
> > > > 4.10-rc4 broken
> > > > 4.10-rc3 ok
> > > 
> > > Hmm. If those actually end up being reliable, then there's not a whole
> > > lot in between them wrt PCI or USB.
> > > 
> > > What looked like the most likely candidate seems to be xhci-specific, though.
> > > 
> > > But maybe it's something that isn't directly in drivers/{pci,usb}/ and
> > > just interacts badly.
> > 
> > Ok. I _hope_ my tests are ok. Bisect log so far is:
> 
> And the winner is:
> 
> pavel@half:/data/l/linux$ git bisect bad
> 24b91e360ef521a2808771633d76ebc68bd5604b is the first bad commit
> commit 24b91e360ef521a2808771633d76ebc68bd5604b
> Author: Frederic Weisbecker <fweisbec@xxxxxxxxx>
> Date:   Wed Jan 4 15:12:04 2017 +0100
> 
>     nohz: Fix collision between tick and other hrtimers

I haven't followed the discussion but this patch has a known issue which is fixed
with:
    7bdb59f1ad474bd7161adc8f923cdef10f2638d1
    "tick/nohz: Fix possible missing clock reprog after tick soft restart"

I hope this fixes your issue.