Merge branch 'kvm-arm64/kvm-for-3.11' of git://git.kernel.org/pub/scm…

…/linux/kernel/git/maz/arm-platforms into upstream

* 'kvm-arm64/kvm-for-3.11' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms: (33 commits)
  arm64: KVM: document kernel object mappings in HYP
  arm64: KVM: MAINTAINERS update
  arm64: KVM: userspace API documentation
  arm64: KVM: enable initialization of a 32bit vcpu
  arm64: KVM: 32bit guest fault injection
  arm64: KVM: 32bit specific register world switch
  arm64: KVM: CPU specific 32bit coprocessor access
  arm64: KVM: 32bit handling of coprocessor traps
  arm64: KVM: 32bit conditional execution emulation
  arm64: KVM: 32bit GP register access
  arm64: KVM: define 32bit specific registers
  arm64: KVM: Build system integration
  arm64: KVM: PSCI implementation
  arm64: KVM: Plug the arch timer
  ARM: KVM: timer: allow DT matching for ARMv8 cores
  arm64: KVM: Plug the VGIC
  arm64: KVM: Exit handling
  arm64: KVM: HYP mode world switch implementation
  arm64: KVM: hypervisor initialization code
  arm64: KVM: guest one-reg interface
  ...

Conflicts:
	arch/arm64/Makefile

Documentation/arm64/memory.txt

@@ -73,3 +73,10 @@ Translation table lookup with 64KB pages:
  |                 |    +--------------------------> [41:29] L2 index (only 38:29 used)
  |                 +-------------------------------> [47:42] L1 index (not used)
  +-------------------------------------------------> [63] TTBR0/1
+
+When using KVM, the hypervisor maps kernel pages in EL2, at a fixed
+offset from the kernel VA (top 24bits of the kernel VA set to zero):
+
+Start			End			Size		Use
+-----------------------------------------------------------------------
+0000004000000000	0000007fffffffff	 256GB		kernel objects mapped in HYP

Documentation/virtual/kvm/api.txt

@@ -280,7 +280,7 @@ kvm_run' (see below).
 4.11 KVM_GET_REGS
 
 Capability: basic
-Architectures: all except ARM
+Architectures: all except ARM, arm64
 Type: vcpu ioctl
 Parameters: struct kvm_regs (out)
 Returns: 0 on success, -1 on error
@@ -301,7 +301,7 @@ struct kvm_regs {
 4.12 KVM_SET_REGS
 
 Capability: basic
-Architectures: all except ARM
+Architectures: all except ARM, arm64
 Type: vcpu ioctl
 Parameters: struct kvm_regs (in)
 Returns: 0 on success, -1 on error
@@ -587,22 +587,22 @@ struct kvm_fpu {
 4.24 KVM_CREATE_IRQCHIP
 
 Capability: KVM_CAP_IRQCHIP
-Architectures: x86, ia64, ARM
+Architectures: x86, ia64, ARM, arm64
 Type: vm ioctl
 Parameters: none
 Returns: 0 on success, -1 on error
 
 Creates an interrupt controller model in the kernel.  On x86, creates a virtual
 ioapic, a virtual PIC (two PICs, nested), and sets up future vcpus to have a
 local APIC.  IRQ routing for GSIs 0-15 is set to both PIC and IOAPIC; GSI 16-23
-only go to the IOAPIC.  On ia64, a IOSAPIC is created. On ARM, a GIC is
+only go to the IOAPIC.  On ia64, a IOSAPIC is created. On ARM/arm64, a GIC is
 created.
 
 
 4.25 KVM_IRQ_LINE
 
 Capability: KVM_CAP_IRQCHIP
-Architectures: x86, ia64, arm
+Architectures: x86, ia64, arm, arm64
 Type: vm ioctl
 Parameters: struct kvm_irq_level
 Returns: 0 on success, -1 on error
@@ -612,9 +612,10 @@ On some architectures it is required that an interrupt controller model has
 been previously created with KVM_CREATE_IRQCHIP.  Note that edge-triggered
 interrupts require the level to be set to 1 and then back to 0.
 
-ARM can signal an interrupt either at the CPU level, or at the in-kernel irqchip
-(GIC), and for in-kernel irqchip can tell the GIC to use PPIs designated for
-specific cpus.  The irq field is interpreted like this:
+ARM/arm64 can signal an interrupt either at the CPU level, or at the
+in-kernel irqchip (GIC), and for in-kernel irqchip can tell the GIC to
+use PPIs designated for specific cpus.  The irq field is interpreted
+like this:
 
   bits:  | 31 ... 24 | 23  ... 16 | 15    ...    0 |
   field: | irq_type  | vcpu_index |     irq_id     |
@@ -1831,6 +1832,22 @@ ARM 32-bit VFP control registers have the following id bit patterns:
 ARM 64-bit FP registers have the following id bit patterns:
   0x4030 0000 0012 0 <regno:12>
 
+
+arm64 registers are mapped using the lower 32 bits. The upper 16 of
+that is the register group type, or coprocessor number:
+
+arm64 core/FP-SIMD registers have the following id bit patterns. Note
+that the size of the access is variable, as the kvm_regs structure
+contains elements ranging from 32 to 128 bits. The index is a 32bit
+value in the kvm_regs structure seen as a 32bit array.
+  0x60x0 0000 0010 <index into the kvm_regs struct:16>
+
+arm64 CCSIDR registers are demultiplexed by CSSELR value:
+  0x6020 0000 0011 00 <csselr:8>
+
+arm64 system registers have the following id bit patterns:
+  0x6030 0000 0013 <op0:2> <op1:3> <crn:4> <crm:4> <op2:3>
+
 4.69 KVM_GET_ONE_REG
 
 Capability: KVM_CAP_ONE_REG
@@ -2264,7 +2281,7 @@ current state.  "addr" is ignored.
 4.77 KVM_ARM_VCPU_INIT
 
 Capability: basic
-Architectures: arm
+Architectures: arm, arm64
 Type: vcpu ioctl
 Parameters: struct struct kvm_vcpu_init (in)
 Returns: 0 on success; -1 on error
@@ -2283,12 +2300,14 @@ should be created before this ioctl is invoked.
 Possible features:
 	- KVM_ARM_VCPU_POWER_OFF: Starts the CPU in a power-off state.
 	  Depends on KVM_CAP_ARM_PSCI.
+	- KVM_ARM_VCPU_EL1_32BIT: Starts the CPU in a 32bit mode.
+	  Depends on KVM_CAP_ARM_EL1_32BIT (arm64 only).
 
 
 4.78 KVM_GET_REG_LIST
 
 Capability: basic
-Architectures: arm
+Architectures: arm, arm64
 Type: vcpu ioctl
 Parameters: struct kvm_reg_list (in/out)
 Returns: 0 on success; -1 on error
@@ -2308,7 +2327,7 @@ 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
+Architectures: arm, arm64
 Type: vm ioctl
 Parameters: struct kvm_arm_device_address (in)
 Returns: 0 on success, -1 on error
@@ -2329,18 +2348,19 @@ 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.
+ARM/arm64 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.
+ARM/arm64 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.
 
 4.82 KVM_PPC_RTAS_DEFINE_TOKEN
 

MAINTAINERS

@@ -4709,6 +4709,15 @@ F:	arch/arm/include/uapi/asm/kvm*
 F:	arch/arm/include/asm/kvm*
 F:	arch/arm/kvm/
 
+KERNEL VIRTUAL MACHINE FOR ARM64 (KVM/arm64)
+M:	Marc Zyngier <marc.zyngier@arm.com>
+L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)
+L:	kvmarm@lists.cs.columbia.edu
+S:	Maintained
+F:	arch/arm64/include/uapi/asm/kvm*
+F:	arch/arm64/include/asm/kvm*
+F:	arch/arm64/kvm/
+
 KEXEC
 M:	Eric Biederman <ebiederm@xmission.com>
 W:	http://kernel.org/pub/linux/utils/kernel/kexec/

arch/arm/kvm/arch_timer.c

@@ -195,6 +195,7 @@ static struct notifier_block kvm_timer_cpu_nb = {
 
 static const struct of_device_id arch_timer_of_match[] = {
 	{ .compatible	= "arm,armv7-timer",	},
+	{ .compatible	= "arm,armv8-timer",	},
 	{},
 };
 

arch/arm64/Makefile

@@ -37,7 +37,8 @@ TEXT_OFFSET := 0x00080000
 export	TEXT_OFFSET GZFLAGS
 
 core-y		+= arch/arm64/kernel/ arch/arm64/mm/
-core-$(CONFIG_XEN)		+= arch/arm64/xen/
+core-$(CONFIG_KVM) += arch/arm64/kvm/
+core-$(CONFIG_XEN) += arch/arm64/xen/
 libs-y		:= arch/arm64/lib/ $(libs-y)
 libs-y		+= $(LIBGCC)