On Thu, 6 Oct 2016 08:06:24 +0200 nicolas prochazka <prochazka.nico...@gmail.com> wrote:
> Hello, > Since I upgrade my linux kernel from linux 4.8rc1 to 4.8.0, I can observe > regression with VFIO/PCI IGD Assignment . > All works very well with linux 4.8rc1 ( broadwell/skylake cpu + win10 guest > / Linux Guest ) . > Since linux 4.8.0, Windows guest screen is a " blink pixel , multi color > blink , a matrix revisited. > > Only linux kernel change between two test, > no log in qemu or dmesg. > > Is there modification to vfio in kernel between 4.8rc1 and 4.8.0 ? , can i > test something. Hmm, I was running 4.8-rc5 on my system, I upgraded to v4.8 and it still works. There's only one change in drivers/vfio from rc1 to 4.8: $ git log --oneline v4.8-rc1..v4.8 drivers/vfio c8952a7 vfio/pci: Fix NULL pointer oops in error interrupt setup handling I notice you're also assigning device 1f.3, which means you're using the acs override patch, which means you're not running a stock v4.8. Thanks, Alex
