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Re: [Xen-devel] [PATCH v2 00/22] Use MSI chip framework to configure MSI/MSI-X in all platforms
- To: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
- From: Yijing Wang <wangyijing@xxxxxxxxxx>
- Date: Mon, 29 Sep 2014 18:13:17 +0800
- Cc: linux-mips@xxxxxxxxxxxxxx, linux-ia64@xxxxxxxxxxxxxxx, linux-pci@xxxxxxxxxxxxxxx, Xinwei Hu <huxinwei@xxxxxxxxxx>, Thierry Reding <thierry.reding@xxxxxxxxx>, sparclinux@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-s390@xxxxxxxxxxxxxxx, Russell King <linux@xxxxxxxxxxxxxxxx>, Michael Ellerman <mpe@xxxxxxxxxxxxxx>, Joerg Roedel <joro@xxxxxxxxxx>, x86@xxxxxxxxxx, Sebastian Ott <sebott@xxxxxxxxxxxxxxxxxx>, Bharat.Bhushan@xxxxxxxxxxxxx, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, xen-devel@xxxxxxxxxxxxxxxxxxxx, arnab.basu@xxxxxxxxxxxxx, Arnd Bergmann <arnd@xxxxxxxx>, Chris Metcalf <cmetcalf@xxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, linux-arm-kernel@xxxxxxxxxxxxxxxxxxx, Thomas Petazzoni <thomas.petazzoni@xxxxxxxxxxxxxxxxxx>, Liviu Dudau <liviu@xxxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, Ralf Baechle <ralf@xxxxxxxxxxxxxx>, iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx, David Vrabel <david.vrabel@xxxxxxxxxx>, Wuyun <wuyun.wu@xxxxxxxxxx>, linuxppc-dev@xxxxxxxxxxxxxxxx, "David S. Miller" <davem@xxxxxxxxxxxxx>
- Delivery-date: Mon, 29 Sep 2014 10:16:41 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
On 2014/9/29 16:37, Lucas Stach wrote:
> Am Sonntag, den 28.09.2014, 14:11 +0800 schrieb Yijing Wang:
>> On 2014/9/28 10:32, Yijing Wang wrote:
>>> On 2014/9/26 17:05, Thierry Reding wrote:
>>>> On Fri, Sep 26, 2014 at 10:54:32AM +0200, Thierry Reding wrote:
>>>> [...]
>>>>> At least for Tegra it's trivial to just hook it up in
>>>>> tegra_pcie_scan_bus()
>>>>> directly (patch attached).
>>>>
>>>> Really attached this time.
>>>>
>>>> Thierry
>>>>
>>>
>>> It looks good to me, so I will update the arm pci hostbridge driver to
>>> assign
>>> pci root bus the msi chip instead of current pcibios_add_bus(). But for
>>> other
>>> platforms which only have a one msi chip, I will kept the
>>> arch_find_msi_chip()
>>> temporarily for more comments, especially from Bjorn.
>>
>> Oh, sorry, I found designware and rcar use pci_scan_root_bus(), so we can
>> not simply
>> assign msi chip to root bus in all host drivers's scan functions.
>
> Designware will switch away from pci_scan_root_bus() in the 3.18 cycle
> and I would think it would be no problem to to the same with rcar.
Good.
>
> Regards,
> Lucas
>
--
Thanks!
Yijing
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