linux-kernel - Re: Bisected Linux regression: ACPI powerbutton events don't work under Xen since commit b81975eade8c6495f3c4d6746d22bdc95f617777

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Message-ID: <1931187914.20141219163135@eikelenboom.it>
Date:	Fri, 19 Dec 2014 16:31:35 +0100
From:	Sander Eikelenboom <linux@...elenboom.it>
To:	Jiang Liu <jiang.liu@...ux.intel.com>
CC:	konrad.wilk@...cle.com, David Vrabel <david.vrabel@...rix.com>,
	Boris Ostrovsky <boris.ostrovsky@...cle.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	<linux-kernel@...r.kernel.org>, <xen-devel@...ts.xenproject.org>
Subject: Re: Bisected Linux regression: ACPI powerbutton events don't work under Xen since commit b81975eade8c6495f3c4d6746d22bdc95f617777


Friday, December 19, 2014, 3:55:00 PM, you wrote:

> Hi Sander,
>         Could you please help to test attached patch? It works
> on native but I have no Xen environment at hand.
> Thanks!
> Gerry

Hi Gerry,

First of all thanks for the swift response !

Just tested this patch and i can report that it fixes my issue.

(i don't know if the xen-folks / Thomas have any comment on the way it is fixed.
But when this is final, it should probably be CC'd for -stable since it's broken
in both 3.17 and 3.18 afaik)

Thanks again,
--
Sander

> On 2014/12/19 21:16, Sander Eikelenboom wrote:
>> Hi,
>> 
>> When running under Xen, ACPI powerbutton events don't work anymore, 
>> there is no reaction when pressing the powerbutton.
>> 
>> On baremetal everything works fine, acpid gets the event and the 
>> machine powers down perfectly. The machine is an Intel NUC.
>>  
>> Bisection has lead to:
>> 
>> b81975eade8c6495f3c4d6746d22bdc95f617777 is the first bad commit
>> commit b81975eade8c6495f3c4d6746d22bdc95f617777
>> Author: Jiang Liu <jiang.liu@...ux.intel.com>
>> Date:   Mon Jun 9 16:20:11 2014 +0800
>> 
>>     x86, irq: Clean up irqdomain transition code
>> 
>>     Now we have completely switched to irqdomain, so clean up transition code
>>     in IOAPIC drivers.
>> 
>>     Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
>>     Cc: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
>>     Cc: Tony Luck <tony.luck@...el.com>
>>     Cc: Joerg Roedel <joro@...tes.org>
>>     Cc: Paul Gortmaker <paul.gortmaker@...driver.com>
>>     Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
>>     Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
>>     Cc: Grant Likely <grant.likely@...aro.org>
>>     Cc: Rafael J. Wysocki <rjw@...ysocki.net>
>>     Cc: Bjorn Helgaas <bhelgaas@...gle.com>
>>     Cc: Randy Dunlap <rdunlap@...radead.org>
>>     Cc: Yinghai Lu <yinghai@...nel.org>
>>     Link: http://lkml.kernel.org/r/1402302011-23642-43-git-send-email-jiang.liu@linux.intel.com
>>     Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
>> 
>> Reverting this specific commit on linux-tip (3.19-mw) gets things working again under Xen.
>> Kernel .config is attached.
>> 
>> --
>> Sander
>> 

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