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

Rustad, Mark D
2015-08-10T16:48:14Z

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Gerry,

> On Aug 9, 2015, at 1:15 AM, Jiang Liu <jiang.liu@linux.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 see the same thing here as well.

> Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
> Reported-by: Alex Deucher <alexdeucher@gmail.com>
> Reported-by: Mark Rustad <mrustad@gmail.com>
> Reported-by: Alexander Holler <holler@ahsoftware.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?

It works for me. Thanks.

--
Mark Rustad, Networking Division, Intel Corporation

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