Re: [vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Wuzongyong (Euler Dept)
> > > > > Hi, > > > > > > > > > > I notice a problem with a PCIe endpoint, which is behind a PLX > switch, > > > > assigned to a VM by VFIO. > > > > > The problem is switch report a UR error when the EP tries to DMA > to a > > > > memory zone inside VM's address space. > > > > > Assume that the DMA

Re: [vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Alex Williamson
On Thu, 13 Sep 2018 20:55:39 -0600 Alex Williamson wrote: > On Fri, 14 Sep 2018 01:25:20 + > "Wuzongyong (Euler Dept)" wrote: > > > > > Hi, > > > > > > > > I notice a problem with a PCIe endpoint, which is behind a PLX switch, > > > > > > > assigned to a VM by VFIO. > > > > The pro

Re: [vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Alex Williamson
On Fri, 14 Sep 2018 01:25:20 + "Wuzongyong (Euler Dept)" wrote: > > > Hi, > > > > > > I notice a problem with a PCIe endpoint, which is behind a PLX switch, > > assigned to a VM by VFIO. > > > The problem is switch report a UR error when the EP tries to DMA to a > > memory zone inside V

Re: [vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Wuzongyong (Euler Dept)
> > Hi, > > > > I notice a problem with a PCIe endpoint, which is behind a PLX switch, > assigned to a VM by VFIO. > > The problem is switch report a UR error when the EP tries to DMA to a > memory zone inside VM's address space. > > Assume that the DMA destination address is between in the VM's ra

Re: [vfio-users] MSIX PBA outside of specified BAR - Intel i350-T4

2018-09-13 Thread taii...@gmx.com
Thanks for your assistance. I ended up noticing what was wrong - the BAR required for MSI-X wasn't being assigned but moving the card back to the original slot (not as good for airflow) solved the issue and now the bars are assigned again for some reason and it works once more. I wish I had checke

Re: [vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Alex Williamson
On Thu, 13 Sep 2018 08:20:53 + "Wuzongyong (Euler Dept)" wrote: > Hi, > > I notice a problem with a PCIe endpoint, which is behind a PLX switch, > assigned to a VM by VFIO. > The problem is switch report a UR error when the EP tries to DMA to a memory > zone inside VM's address space. > As

[vfio-users] PLX switch report a UR when EP tries to DMA to VM's memory

2018-09-13 Thread Wuzongyong (Euler Dept)
Hi, I notice a problem with a PCIe endpoint, which is behind a PLX switch, assigned to a VM by VFIO. The problem is switch report a UR error when the EP tries to DMA to a memory zone inside VM's address space. Assume that the DMA destination address is between in the VM's ram address space, and