From: John Garry <john.garry@huawei.com>
To: Marc Zyngier <maz@kernel.org>
Cc: Thomas Gleixner <tglx@linutronix.de>,
<gregkh@linuxfoundation.org>, <rafael@kernel.org>,
<martin.petersen@oracle.com>, <jejb@linux.ibm.com>,
<linuxarm@huawei.com>, <linux-scsi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2 1/3] genirq/affinity: Add irq_update_affinity_desc()
Date: Thu, 26 Nov 2020 11:29:54 +0000 [thread overview]
Message-ID: <e96dd9b0-c3a7-f7fb-0317-2fc2107f405a@huawei.com> (raw)
In-Reply-To: <d696d314514a4bd53c85f2da73a23eed@kernel.org>
Hi Marc,
>
> I did:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git/log/?h=irq/hacks
ok, I'll have a look
>>
>> You still should be able to enable my favorite
>> CONFIG_DEBUG_TEST_DRIVER_REMOVE=y, while the distro still boot. But
>> I'll just test if you want.
>
> Ah! Let me try that then. Having been debugging some ugly driver removal
> lately, I wish I had known that config option and inflicted it on their
> authors...
Just in case - be careful with this one! It kills the boot of many
systems, but D05 should be fine.
>
> [...]
>
>>> And while the mbigen port that is connected to the SAS controller
>>> doesn't seem to be shared between endpoints, some other ports definitely
>>> are:
>>>
>>> # cat /sys/kernel/debug/irq/domains/\\_SB.MBI1
>>> name: \_SB.MBI1
>>> size: 409
>>> mapped: 192
>>> flags: 0x00000003
>>>
>>> [...]
>>>
>>> I guess that the other 217 lines are connected somewhere.
>>>
>>
>> I think that is not the right one. See
>> https://github.com/tianocore/edk2-platforms/blob/master/Silicon/Hisilicon/Hi1616/D05AcpiTables/Dsdt/D05Sas.asl#L101
>>
>>
>
> I know, I was just outlining the fact that some of the mbigen
> ports are shared between devices, and MBI1 seems to be an example
> of that (though my reading of ASL is... primitive).
Ah, ok. So this one is for the networking subsystem, and it does have
many devices in the topology model, but I can't claim to known much more
than that.
Thanks,
John
next prev parent reply other threads:[~2020-11-26 11:30 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-28 12:33 [PATCH v2 0/3] Support managed interrupts for platform devices John Garry
2020-10-28 12:33 ` [PATCH v2 1/3] genirq/affinity: Add irq_update_affinity_desc() John Garry
2020-10-28 18:22 ` Thomas Gleixner
2020-11-02 17:32 ` John Garry
2020-11-02 20:35 ` Thomas Gleixner
2020-11-17 21:28 ` Thomas Gleixner
2020-11-18 11:34 ` John Garry
2020-11-18 20:38 ` Thomas Gleixner
2020-11-19 9:31 ` John Garry
2020-11-19 18:09 ` Thomas Gleixner
2020-11-19 19:56 ` John Garry
2020-11-19 21:03 ` Thomas Gleixner
2020-11-20 11:52 ` John Garry
2020-11-22 13:38 ` Marc Zyngier
2020-11-23 12:54 ` John Garry
2020-11-23 13:26 ` Marc Zyngier
2020-11-23 15:45 ` John Garry
2020-11-24 16:51 ` Marc Zyngier
2020-11-24 17:38 ` John Garry
2020-11-25 18:35 ` Marc Zyngier
2020-11-26 10:47 ` John Garry
2020-11-26 11:08 ` Marc Zyngier
2020-11-26 11:29 ` John Garry [this message]
2020-11-26 16:52 ` John Garry
2020-11-27 9:57 ` Marc Zyngier
2020-11-27 12:45 ` John Garry
2020-11-27 12:49 ` Marc Zyngier
2020-10-28 12:33 ` [PATCH v2 2/3] Driver core: platform: Add platform_get_irqs_affinity() John Garry
2020-10-28 12:33 ` [PATCH v2 3/3] scsi: hisi_sas: Expose HW queues for v2 hw John Garry
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