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Re: [Xen-devel] [PATCH v2 00/22] Use MSI chip framework to configure MSI/MSI-X in all platforms
- To: Yijing Wang <wangyijing@xxxxxxxxxx>
- From: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
- Date: Mon, 29 Sep 2014 10:37:30 +0200
- 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 08:38:29 +0000
- List-id: Xen developer discussion <xen-devel.lists.xen.org>
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.
Regards,
Lucas
--
Pengutronix e.K. | Lucas Stach |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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