Re: [dpdk-dev] Having troubles binding an SR-IOV VF to uio_pci_generic on Amazon instance

[Vlad Zolotarov <vladz@cloudius-systems.com>]

On 10/01/15 00:36, Stephen Hemminger wrote:
> On Wed, 30 Sep 2015 23:09:33 +0300
> Vlad Zolotarov <vladz@cloudius-systems.com> wrote:
>
>>
>> On 09/30/15 22:39, Michael S. Tsirkin wrote:
>>> On Wed, Sep 30, 2015 at 10:06:52PM +0300, Vlad Zolotarov wrote:
>>>>>> How would iommu
>>>>>> virtualization change anything?
>>>>> Kernel can use an iommu to limit device access to memory of
>>>>> the controlling application.
>>>> Ok, this is obvious but what it has to do with enabling using MSI/MSI-X
>>>> interrupts support in uio_pci_generic? kernel may continue to limit the
>>>> above access with this support as well.
>>> It could maybe. So if you write a patch to allow MSI by at the same time
>>> creating an isolated IOMMU group and blocking DMA from device in
>>> question anywhere, that sounds reasonable.
>> No, I'm only planning to add MSI and MSI-X interrupts support for
>> uio_pci_generic device.
>> The rest mentioned above should naturally be a matter of a different
>> patch and writing it is orthogonal to the patch I'm working on as has
>> been extensively discussed in this thread.
>>
> I have a generic MSI and MSI-X driver (posted earlier on this list).
> About to post to upstream kernel.

Great! It would save me a few working days... ;) Thanks, Stephen!