linux-kernel - Re: [Bugfix] x86, irq: Fix a regression caused by commit b5dc8e6c21e7

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Date:	Tue, 18 Aug 2015 14:53:26 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Alex Deucher <alexdeucher@...il.com>
cc:	Jiang Liu <jiang.liu@...ux.intel.com>,
	Alexander Holler <holler@...oftware.de>,
	Mark Rustad <mark.d.rustad@...el.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
	Tony Luck <tony.luck@...el.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [Bugfix] x86, irq: Fix a regression caused by commit
 b5dc8e6c21e7

On Mon, 17 Aug 2015, Alex Deucher wrote:
> On Sun, Aug 9, 2015 at 4:15 AM, Jiang Liu <jiang.liu@...ux.intel.com> wrote:
> > 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.
> 
> I don't see this upstream yet.  Any chance this will make 4.2?

Yes, it's going to be there.
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