linux-kernel - Subject: [v3.19 Regression] x86, irq, acpi: Get rid of special handling of GSI for ACPI SCI

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Message-ID: <55A4132B.4030801@canonical.com>
Date:	Mon, 13 Jul 2015 15:36:11 -0400
From:	Joseph Salisbury <joseph.salisbury@...onical.com>
To:	jiang.liu@...ux.intel.com
CC:	konrad.wilk@...cle.com, tony.luck@...el.com, joro@...tes.org,
	Greg KH <gregkh@...uxfoundation.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Bjorn Helgaas <bhelgaas@...gle.com>, rdunlap@...radead.org,
	Yinghai Lu <yinghai@...nel.org>, bp@...en8.de,
	len.brown@...el.com, pavel@....cz,
	Thomas Gleixner <tglx@...utronix.de>,
	LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>, pavel@....cz,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org,
	linux-pm@...r.kernel.org
Subject: Subject:  [v3.19 Regression] x86, irq, acpi: Get rid of special handling
 of GSI for ACPI SCI

Hello Jiang,

A kernel bug report was opened against Ubuntu [0]. It was found that
reverting the following commit resolves this bug:

commit cd68f6bd53cf89d1d5ed889b8af65e9c3574a079
Author: Jiang Liu <jiang.liu@...ux.intel.com>
Date:   Mon Oct 27 16:11:52 2014 +0800

    x86, irq, acpi: Get rid of special handling of GSI for ACPI SCI

The regression was introduced as of v3.19-rc1.
    
I was hoping to get your feedback, since you are the patch author.  Do
you think gathering any additional data will help diagnose this issue,
or would it be best to submit a revert request?
    
    
Thanks,

Joe


[0] http://pad.lv/1440072

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