[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH 0/3] pci: allow PCI bus slots to be marked as re
From: |
Mark Cave-Ayland |
Subject: |
Re: [Qemu-devel] [PATCH 0/3] pci: allow PCI bus slots to be marked as reserved |
Date: |
Tue, 11 Jul 2017 18:59:10 +0100 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 |
On 11/07/17 16:57, Michael S. Tsirkin wrote:
> On Tue, Jul 11, 2017 at 06:51:50PM +0300, Marcel Apfelbaum wrote:
>> On 11/07/2017 18:31, Michael S. Tsirkin wrote:
>>> On Fri, Jul 07, 2017 at 08:43:59AM +0100, Mark Cave-Ayland wrote:
>>>> For some machines it is impossible to plug devices into a particular PCI
>>>> bus
>>>> slot, e.g. for a real Ultra 5 there are 2 PCI bridges attached to the root
>>>> bus behind which all devices must be plugged. Ignoring this rule will cause
>>>> problems with interrupt routing since the interrupt numbers are calculated
>>>> based upon PCI bridge id and secondary PCI bus slot id.
>>>>
>>>> This patchset adds a new dev_reserved_mask property to PCIBus which is a
>>>> bitmask used to indicate whether PCI bus slots are reserved, i.e. they
>>>> cannot
>>>> be used for hot or cold plugging on a particular PCI bus.
>>>>
>>>> Signed-off-by: Mark Cave-Ayland <address@hidden>
>>>
>>
>> Hi Michael,
>>
>>> Could you please point me at series making use of this
>>> functionality?
>>
>> There is a discussion upstream, I am not aware of patches yet.
>>
>> https://lists.gnu.org/archive/html/qemu-devel/2017-07/msg00771.html
>>
>> Thanks,
>> Marcel
>
> It is probably a good idea to defer merging this patchset
> until there's an agreement on how it will be used.
I have a local patchset that uses it, but it has been held up by the
on-going issues with the fw_cfg patchset upon which it is also dependent.
I will try and find some time this evening to rebase the patchset and
send it out as I am aware that freeze is coming up soon.
ATB,
Mark.