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

Jiang Liu
2015-08-09T14:12:06Z

On 2015/8/9 18:14, Alexander Holler wrote:
> 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@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?
>
> Works. Thanks.
>
> Tested-by: Alexander Holler <holler@ahsoftware.de>
Thanks, Alexander!