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Message-ID: <55C72814.9010404@ahsoftware.de>
Date:	Sun, 9 Aug 2015 12:14:44 +0200
From:	Alexander Holler <holler@...oftware.de>
To:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Mark Rustad <mark.d.rustad@...el.com>,
	Alex Deucher <alexdeucher@...il.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org
Cc:	Tony Luck <tony.luck@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [Bugfix] x86, irq: Fix a regression caused by commit b5dc8e6c21e7

Am 09.08.2015 um 10:15 schrieb Jiang Liu:
> Alex Deucher, Mark Rustad and Alexander Holler reported a regression
> with the latest v4.2-rc4 kernel, which breaks some SATA controllers.
> With multi-MSI capable SATA controllers, only the first port works,
> all other ports times out when executing SATA commands. This regression
> bisects to 52f518a3a7c2 ("x86/MSI: Use hierarchical irqdomains to manage
> MSI interrupts"), but it's not the root cause, it just triggers a bug
> caused by b5dc8e6c21e7 ("x86/irq: Use hierarchical irqdomain to manage
> CPU interrupt vectors").
>
> With this patch applied, the affected SATA controllers work as expected.
>
> Signed-off-by: Jiang Liu <jiang.liu@...ux.intel.com>
> Reported-by: Alex Deucher <alexdeucher@...il.com>
> Reported-by: Mark Rustad <mrustad@...il.com>
> Reported-by: Alexander Holler <holler@...oftware.de>
> ---
> Hi Alex, Mark and Alexandler,
> 	Sorry for the long delay to root cause this regression, it's
> really annoying. Could you please help test this patch against the
> latest v4.2-rcx?

Works. Thanks.

Tested-by: Alexander Holler <holler@...oftware.de>


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