root@pc:/usr/src/kvm/kernel/linux-3.13/linux-3.13# patch -p1 --dry-run </usr/src/kvm/old/for\ 3.11/kernel-vfio-vga-reset.patch 
checking file drivers/pci/hotplug/pci_hotplug_core.c
checking file drivers/pci/hotplug/pciehp.h
Reversed (or previously applied) patch detected!  Assume -R? [n] n
Apply anyway? [n] n
Skipping patch.
1 out of 1 hunk ignored
checking file drivers/pci/hotplug/pciehp_core.c
Reversed (or previously applied) patch detected!  Assume -R? [n] n
Apply anyway? [n] n
Skipping patch.
3 out of 3 hunks ignored
checking file drivers/pci/hotplug/pciehp_hpc.c
Reversed (or previously applied) patch detected!  Assume -R? [n] n
Apply anyway? [n] n
Skipping patch.
1 out of 1 hunk ignored
checking file drivers/pci/pci.c
Reversed (or previously applied) patch detected!  Assume -R? [n] n
Apply anyway? [n] n
Skipping patch.
5 out of 5 hunks ignored
checking file drivers/vfio/pci/vfio_pci.c
Hunk #1 succeeded at 332 with fuzz 1 (offset 124 lines).
Hunk #2 succeeded at 571 with fuzz 2 (offset 124 lines).
checking file drivers/vfio/vfio.c
Hunk #1 succeeded at 698 (offset -15 lines).
Hunk #2 succeeded at 1356 with fuzz 2 (offset -3 lines).
checking file include/linux/pci.h
Hunk #1 FAILED at 923.
1 out of 1 hunk FAILED
checking file include/linux/pci_hotplug.h
Reversed (or previously applied) patch detected!  Assume -R? [n] n
Apply anyway? [n] n
Skipping patch.
3 out of 3 hunks ignored
checking file include/linux/vfio.h
checking file include/uapi/linux/vfio.h
Hunk #1 succeeded at 60 (offset 1 line).
Hunk #2 succeeded at 365 with fuzz 2 (offset 39 lines).