Merge tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM virtualization changes:
 "This contains parts of the ARM KVM support that have dependencies on
  other patches merged through the arm-soc tree.  In combination with
  patches coming through Russell's tree, this will finally add full
  support for the kernel based virtual machine on ARM, which has been
  awaited for some time now.

  Further, we now have a separate platform for virtual machines and qemu
  booting that is used by both Xen and KVM, separating these from the
  Versatile Express reference implementation.  Obviously, this new
  platform is multiplatform capable so it can be combined with existing
  machines in the same kernel."

* tag 'virt' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (38 commits)
  ARM: arch_timer: include linux/errno.h
  arm: arch_timer: add missing inline in stub function
  ARM: KVM: arch_timers: Wire the init code and config option
  ARM: KVM: arch_timers: Add timer world switch
  ARM: KVM: arch_timers: Add guest timer core support
  ARM: KVM: Add VGIC configuration option
  ARM: KVM: VGIC initialisation code
  ARM: KVM: VGIC control interface world switch
  ARM: KVM: VGIC interrupt injection
  ARM: KVM: vgic: retire queued, disabled interrupts
  ARM: KVM: VGIC virtual CPU interface management
  ARM: KVM: VGIC distributor handling
  ARM: KVM: VGIC accept vcpu and dist base addresses from user space
  ARM: KVM: Initial VGIC infrastructure code
  ARM: KVM: Keep track of currently running vcpus
  KVM: ARM: Introduce KVM_ARM_SET_DEVICE_ADDR ioctl
  ARM: gic: add __ASSEMBLY__ guard to C definitions
  ARM: gic: define GICH offsets for VGIC support
  ARM: gic: add missing distributor defintions
  ARM: mach-virt: fixup machine descriptor after removal of sys_timer
  ...

2 files changed, 42 insertions, 3 deletions

diff --git a/Documentation/devicetree/bindings/arm/arch_timer.txt b/Documentation/devicetree/bindings/arm/arch_timer.txt
index 52478c83d0cc..20746e5abe6f 100644
--- a/Documentation/devicetree/bindings/arm/arch_timer.txt
+++ b/Documentation/devicetree/bindings/arm/arch_timer.txt
@@ -1,13 +1,14 @@
 * ARM architected timer
 
-ARM Cortex-A7 and Cortex-A15 have a per-core architected timer, which
-provides per-cpu timers.
+ARM cores may have a per-core architected timer, which provides per-cpu timers.
 
 The timer is attached to a GIC to deliver its per-processor interrupts.
 
 ** Timer node properties:
 
-- compatible : Should at least contain "arm,armv7-timer".
+- compatible : Should at least contain one of
+        "arm,armv7-timer"
+        "arm,armv8-timer"
 
 - interrupts : Interrupt list for secure, non-secure, virtual and
   hypervisor timers, in that order.
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index c25439a58274..e0fa0ea2b187 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2210,6 +2210,44 @@ This ioctl returns the guest registers that are supported for the
 KVM_GET_ONE_REG/KVM_SET_ONE_REG calls.
 
 
+4.80 KVM_ARM_SET_DEVICE_ADDR
+
+Capability: KVM_CAP_ARM_SET_DEVICE_ADDR
+Architectures: arm
+Type: vm ioctl
+Parameters: struct kvm_arm_device_address (in)
+Returns: 0 on success, -1 on error
+Errors:
+  ENODEV: The device id is unknown
+  ENXIO:  Device not supported on current system
+  EEXIST: Address already set
+  E2BIG:  Address outside guest physical address space
+  EBUSY:  Address overlaps with other device range
+
+struct kvm_arm_device_addr {
+        __u64 id;
+        __u64 addr;
+};
+
+Specify a device address in the guest's physical address space where guests
+can access emulated or directly exposed devices, which the host kernel needs
+to know about. The id field is an architecture specific identifier for a
+specific device.
+
+ARM divides the id field into two parts, a device id and an address type id
+specific to the individual device.
+
+  bits:  | 63        ...       32 | 31    ...    16 | 15    ...    0 |
+  field: |        0x00000000      |     device id   |  addr type id  |
+
+ARM currently only require this when using the in-kernel GIC support for the
+hardware VGIC features, using KVM_ARM_DEVICE_VGIC_V2 as the device id.  When
+setting the base address for the guest's mapping of the VGIC virtual CPU
+and distributor interface, the ioctl must be called after calling
+KVM_CREATE_IRQCHIP, but before calling KVM_RUN on any of the VCPUs.  Calling
+this ioctl twice for any of the base addresses will return -EEXIST.
+
+
 5. The kvm_run structure
 ------------------------