linux-kernel - Re: ACPI regression with 3.19+

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Date:	Mon, 02 Mar 2015 23:03:50 +0100
From:	"Rafael J. Wysocki" <rjw@...ysocki.net>
To:	Hudd <hedede.l@...il.com>, Jiang Liu <jiang.liu@...ux.intel.com>
Cc:	Prakash Punnoor <prakash@...noor.de>, jiang.liu@...ux.intel.com,
	rafael.j.wysocki@...el.com, linux-acpi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: ACPI regression with 3.19+

On Monday, March 02, 2015 10:07:20 PM Hudd wrote:
> On Sun, 2015-03-01 at 01:00 +0100, Rafael J. Wysocki wrote:
> > On Saturday, February 28, 2015 10:35:21 AM Prakash Punnoor wrote:
> > > This is a multi-part message in MIME format.
> > > --------------080704070901080904040008
> > > Content-Type: text/plain; charset=utf-8
> > > Content-Transfer-Encoding: 7bit
> > > 
> > > Hallo,
> > > 
> > > my system won't boot with current GIT kernel (see attached screenshot).
> > > The system seems somewhat frozen (cannot ssh into it), but magic sysrq
> > > still works. I bisected the problem to commit
> > > 593669c2ac0fe18baee04a3cd5539a148aa48574.
> > 
> > Thanks for reporting, we're working on it.
> 
> Hello folks,
> 
> I've tried out 4.0-rc1, and it does not boot  on  my  system.   It  just
> freezes without any messages (The only message I see is “Loading initial
> ramdisk” from GRUB).  I bisected the problem down to the same commit  as
> in this  report.
> 
> # first bad commit: [593669c2ac0fe18baee04a3cd5539a148aa48574]
> x86/PCI/ACPI: Use common ACPI resource interfaces to simplify implementation

So at the moment I'm inclined to revert it.  Clearly, it wasn't thought
through enough, so my suggestion would be to revert it for 4.0 and try again
in the next cycle and be more careful this time.

Gerry, would it cause problems to happen if I reverted this one?


-- 
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.
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