Merge branch 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty...

Pull virtio changes from Rusty Russell:
 "New workflow: same git trees pulled by linux-next get sent straight to
  Linus.  Git is awkward at shuffling patches compared with quilt or mq,
  but that doesn't happen often once things get into my -next branch."

* 'virtio-next' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux: (24 commits)
  lguest: fix occasional crash in example launcher.
  virtio-blk: Disable callback in virtblk_done()
  virtio_mmio: Don't attempt to create empty virtqueues
  virtio_mmio: fix off by one error allocating queue
  drivers/virtio/virtio_pci.c: fix error return code
  virtio: don't crash when device is buggy
  virtio: remove CONFIG_VIRTIO_RING
  virtio: add help to CONFIG_VIRTIO option.
  virtio: support reserved vqs
  virtio: introduce an API to set affinity for a virtqueue
  virtio-ring: move queue_index to vring_virtqueue
  virtio_balloon: not EXPERIMENTAL any more.
  virtio-balloon: dependency fix
  virtio-blk: fix NULL checking in virtblk_alloc_req()
  virtio-blk: Add REQ_FLUSH and REQ_FUA support to bio path
  virtio-blk: Add bio-based IO path for virtio-blk
  virtio: console: fix error handling in init() function
  tools: Fix pthread flag for Makefile of trace-agent used by virtio-trace
  tools: Add guest trace agent as a user tool
  virtio/console: Allocate scatterlist according to the current pipe size
  ...

diff --cc arch/s390/Kconfig
index f9acddd9ace399e66a3d787129dc41f63c6d60af,9faf3d9b26c739e32b58097734fb08c7320ea10c..c8af429991d98748ec8dbc635d461885ab32eee7
--- 1/arch/s390/Kconfig
--- 2/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@@ -656,13 -587,56 +656,12 @@@ config S390_GUES
        depends on 64BIT && EXPERIMENTAL
        select VIRTUALIZATION
        select VIRTIO
-       select VIRTIO_RING
        select VIRTIO_CONSOLE
        help
 -        Select this option if you want to run the kernel as a guest under
 -        the KVM hypervisor. This will add detection for KVM as well  as a
 -        virtio transport. If KVM is detected, the virtio console will be
 -        the default console.
 -
 -config SECCOMP
 -      def_bool y
 -      prompt "Enable seccomp to safely compute untrusted bytecode"
 -      depends on PROC_FS
 -      help
 -        This kernel feature is useful for number crunching applications
 -        that may need to compute untrusted bytecode during their
 -        execution. By using pipes or other transports made available to
 -        the process as file descriptors supporting the read/write
 -        syscalls, it's possible to isolate those applications in
 -        their own address space using seccomp. Once seccomp is
 -        enabled via /proc/<pid>/seccomp, it cannot be disabled
 -        and the task is only allowed to execute a few safe syscalls
 -        defined by each seccomp mode.
 -
 -        If unsure, say Y.
 -
 -endmenu
 +        Enabling this option adds support for virtio based paravirtual device
 +        drivers on s390.
  
 -menu "Power Management"
 -
 -source "kernel/power/Kconfig"
 +        Select this option if you want to run the kernel as a guest under
 +        the KVM hypervisor.
  
  endmenu
 -
 -source "net/Kconfig"
 -
 -config PCMCIA
 -      def_bool n
 -
 -config CCW
 -      def_bool y
 -
 -source "drivers/Kconfig"
 -
 -source "fs/Kconfig"
 -
 -source "arch/s390/Kconfig.debug"
 -
 -source "security/Kconfig"
 -
 -source "crypto/Kconfig"
 -
 -source "lib/Kconfig"
 -
 -source "arch/s390/kvm/Kconfig"

diff --cc kernel/trace/trace.c
Simple merge