Re: [PATCH v6 04/30] xen/PCI: Don't use deprecated function pci_scan_bus_parented()
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- To: Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
- Subject: Re: [PATCH v6 04/30] xen/PCI: Don't use deprecated function pci_scan_bus_parented()
- From: Yijing Wang <wangyijing@xxxxxxxxxx>
- Date: Thu, 26 Mar 2015 09:18:59 +0800
- Cc: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>, "linux-pci@xxxxxxxxxxxxxxx" <linux-pci@xxxxxxxxxxxxxxx>, Yinghai Lu <yinghai@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, Marc Zyngier <marc.zyngier@xxxxxxx>, linux-arm <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, Russell King <linux@xxxxxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, Rusty Russell <rusty@xxxxxxxxxxxxxxx>, Tony Luck <tony.luck@xxxxxxxxx>, "linux-ia64@xxxxxxxxxxxxxxx" <linux-ia64@xxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>, "Guan Xuetao" <gxt@xxxxxxxxxxxxxxx>, <linux-alpha@xxxxxxxxxxxxxxx>, <linux-m68k@xxxxxxxxxxxxxxx>, Liviu Dudau <liviu@xxxxxxxxxxx>, Arnd Bergmann <arnd@xxxxxxxx>, Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- In-reply-to: <20150325192331.GG25884@l.oracle.com>
- List-id: <linux-ia64.vger.kernel.org>
- References: <1425868467-9667-1-git-send-email-wangyijing@huawei.com> <1425868467-9667-5-git-send-email-wangyijing@huawei.com> <20150311223211.GB1082@google.com> <55017CA5.2010502@huawei.com> <20150312193505.GB7346@google.com> <55024D35.6050509@huawei.com> <CAErSpo4T7f9PNVMLrQbCvW2a=HnRauQR2eBz6H69B7Q2=ELNWw@mail.gmail.com> <20150313140132.GH5378@l.oracle.com> <CAErSpo69ytCxBK5AD79Nz05wy=GwzcOGV7WkiKFxpLDH4wtJXw@mail.gmail.com> <20150325192331.GG25884@l.oracle.com>
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>>>> That seems OK to me. Probably still wrong, but no worse than it was before.
>>>
>>> Interesting. The mechanism for PCI passthrough can either synthesize
>>> and PCI bus number starting at zero (so first device is always 0:0:0.0)
>>> or it can replicate the backend PCI topology. That means you
>>> could have segment values passed in, so: ab:ff:00.1). I've to admin
>>> I hadn't tried the 'physical' replication on an machine with
>>> domains (err, segments).
>>>
>>> Is there an git tree with this so I can just try it out?
>>
>> git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci.git
>> pci/enumeration-yw6 has similar code (it exports the single
>
> I presume now it is bjorn/pci/enumeration-yw8 ? Going to test this out
> this week.
Yes, it's the latest version. thanks!
>> busn_resource and makes xen use it). That should be functionally
>> identical to what v4.0-rc1 does.
>>
>> Yijing hasn't posted the static busn_res proposal above yet, so I
>> don't have a branch with that in it.
>>
>> Bjorn
>
> .
>
--
Thanks!
Yijing
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