Re: VFIO MSIX Query

2016-05-09 Thread Alex Williamson
On Sun, 8 May 2016 20:45:10 +0530 Nitin Saxena wrote: > Hi Alex, > > Thanks for your answer. I got the point that all access to device must be > VFIO. > I have few more questions. > > >> When the device is initially opened via the VFIO_GET_DEVICE_FD ioctl, we > go through an initialization se

Re: VFIO MSIX Query

2016-05-07 Thread Alex Williamson
Hi Nitin, On Sat, 7 May 2016 21:09:09 +0530 Nitin Saxena wrote: > Hi Alex, > > I have specific questions related to the problem I am facing in using VFIO > for MSIX interrupt. > > My userspace program running on x86 talks to NIC connected via PCIe > interface. Current program works fine in pol

Re: VFIO MSIX Query

2016-05-03 Thread Saxena, Nitin
Got it. Thanks Alex. I may have future queries as well on this. Will get back to you. Thanks, Nitin > On 04-May-2016, at 01:33, Alex Williamson wrote: > > Hi, > > On Tue, 3 May 2016 23:56:38 +0530 > Nitin Saxena wrote: > >> Hi, >> >> I am a newbie to VFIO framework and trying to use it for

Re: VFIO MSIX Query

2016-05-03 Thread Alex Williamson
Hi, On Tue, 3 May 2016 23:56:38 +0530 Nitin Saxena wrote: > Hi, > > I am a newbie to VFIO framework and trying to use it for MSIX interrupt > handling in my userspace application. My userspace application is like > intel's dpdk. > > My query is why vfio kernel code does not support msix maskin