From mboxrd@z Thu Jan  1 00:00:00 1970
From: wangyijing0307@gmail.com (Yijing Wang)
Date: Fri, 21 Nov 2014 19:57:01 +0800
Subject: Removal of bus->msi assignment breaks MSI with stacked domains
In-Reply-To: <546F0FB6.3050404@arm.com>
References: <546E1771.4030201@arm.com> <546E93DC.8010902@huawei.com>
 <546F0FB6.3050404@arm.com>
Message-ID: <546F288D.2040705@gmail.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org


? 2014/11/21 18:11, Marc Zyngier ??:
> On 21/11/14 01:22, Yijing Wang wrote:
>> On 2014/11/21 0:31, Marc Zyngier wrote:
>>> Bjorn, Yijing,
>>>
>>> I've just realized that patch c167caf8d174 (PCI/MSI: Remove useless
>>> bus->msi assignment) completely breaks MSI on arm64 when using the new
>>> MSI stacked domain:
>> Sorry, this is my first part to refactor MSI related code, now
>> how to get pci msi_controller depends arch functions(pcibios_msi_controller() or
>> arch_setup_msi_irq()), we are working on generic pci_host_bridge, after that,
>> we could eventually eliminate MSI arch functions and find pci dev 's msi controller
>> by pci_host_bridge->get_msi_controller().
>>
>> Marc, could you tell me what pci host driver in your test platform ?
> I'm using pci-host-generic (with a couple of patches to help it fit the
> new "generic pci" infrastructure).
>
> This lives at:
> git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms.git
> irq/arm64-pci

Thanks, I would have a look at it.

>
> Thanks,
>
> 	M.