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authorStefan Richter <stefanr@s5r6.in-berlin.de>2011-05-10 20:52:07 +0200
committerStefan Richter <stefanr@s5r6.in-berlin.de>2011-05-10 22:50:41 +0200
commit020abf03cd659388f94cb328e1e1df0656e0d7ff (patch)
tree40d05011708ad1b4a05928d167eb120420581aa6 /Documentation/kvm
parent0ff8fbc61727c926883eec381fbd3d32d1fab504 (diff)
parent693d92a1bbc9e42681c42ed190bd42b636ca876f (diff)
downloadop-kernel-dev-020abf03cd659388f94cb328e1e1df0656e0d7ff.zip
op-kernel-dev-020abf03cd659388f94cb328e1e1df0656e0d7ff.tar.gz
Merge tag 'v2.6.39-rc7'
in order to pull in changes in drivers/media/dvb/firewire/ and sound/firewire/.
Diffstat (limited to 'Documentation/kvm')
-rw-r--r--Documentation/kvm/api.txt262
-rw-r--r--Documentation/kvm/cpuid.txt3
-rw-r--r--Documentation/kvm/locking.txt25
-rw-r--r--Documentation/kvm/mmu.txt2
-rw-r--r--Documentation/kvm/msr.txt36
-rw-r--r--Documentation/kvm/ppc-pv.txt2
-rw-r--r--Documentation/kvm/timekeeping.txt2
7 files changed, 286 insertions, 46 deletions
diff --git a/Documentation/kvm/api.txt b/Documentation/kvm/api.txt
index b336266..9bef4e4 100644
--- a/Documentation/kvm/api.txt
+++ b/Documentation/kvm/api.txt
@@ -166,7 +166,7 @@ Returns: 0 on success, -1 on error
This ioctl is obsolete and has been removed.
-4.6 KVM_CREATE_VCPU
+4.7 KVM_CREATE_VCPU
Capability: basic
Architectures: all
@@ -177,7 +177,7 @@ Returns: vcpu fd on success, -1 on error
This API adds a vcpu to a virtual machine. The vcpu id is a small integer
in the range [0, max_vcpus).
-4.7 KVM_GET_DIRTY_LOG (vm ioctl)
+4.8 KVM_GET_DIRTY_LOG (vm ioctl)
Capability: basic
Architectures: x86
@@ -200,7 +200,7 @@ since the last call to this ioctl. Bit 0 is the first page in the
memory slot. Ensure the entire structure is cleared to avoid padding
issues.
-4.8 KVM_SET_MEMORY_ALIAS
+4.9 KVM_SET_MEMORY_ALIAS
Capability: basic
Architectures: x86
@@ -210,7 +210,7 @@ Returns: 0 (success), -1 (error)
This ioctl is obsolete and has been removed.
-4.9 KVM_RUN
+4.10 KVM_RUN
Capability: basic
Architectures: all
@@ -226,7 +226,7 @@ obtained by mmap()ing the vcpu fd at offset 0, with the size given by
KVM_GET_VCPU_MMAP_SIZE. The parameter block is formatted as a 'struct
kvm_run' (see below).
-4.10 KVM_GET_REGS
+4.11 KVM_GET_REGS
Capability: basic
Architectures: all
@@ -246,7 +246,7 @@ struct kvm_regs {
__u64 rip, rflags;
};
-4.11 KVM_SET_REGS
+4.12 KVM_SET_REGS
Capability: basic
Architectures: all
@@ -258,7 +258,7 @@ Writes the general purpose registers into the vcpu.
See KVM_GET_REGS for the data structure.
-4.12 KVM_GET_SREGS
+4.13 KVM_GET_SREGS
Capability: basic
Architectures: x86
@@ -283,7 +283,7 @@ interrupt_bitmap is a bitmap of pending external interrupts. At most
one bit may be set. This interrupt has been acknowledged by the APIC
but not yet injected into the cpu core.
-4.13 KVM_SET_SREGS
+4.14 KVM_SET_SREGS
Capability: basic
Architectures: x86
@@ -294,7 +294,7 @@ Returns: 0 on success, -1 on error
Writes special registers into the vcpu. See KVM_GET_SREGS for the
data structures.
-4.14 KVM_TRANSLATE
+4.15 KVM_TRANSLATE
Capability: basic
Architectures: x86
@@ -317,7 +317,7 @@ struct kvm_translation {
__u8 pad[5];
};
-4.15 KVM_INTERRUPT
+4.16 KVM_INTERRUPT
Capability: basic
Architectures: x86, ppc
@@ -365,7 +365,7 @@ c) KVM_INTERRUPT_SET_LEVEL
Note that any value for 'irq' other than the ones stated above is invalid
and incurs unexpected behavior.
-4.16 KVM_DEBUG_GUEST
+4.17 KVM_DEBUG_GUEST
Capability: basic
Architectures: none
@@ -375,7 +375,7 @@ Returns: -1 on error
Support for this has been removed. Use KVM_SET_GUEST_DEBUG instead.
-4.17 KVM_GET_MSRS
+4.18 KVM_GET_MSRS
Capability: basic
Architectures: x86
@@ -403,7 +403,7 @@ Application code should set the 'nmsrs' member (which indicates the
size of the entries array) and the 'index' member of each array entry.
kvm will fill in the 'data' member.
-4.18 KVM_SET_MSRS
+4.19 KVM_SET_MSRS
Capability: basic
Architectures: x86
@@ -418,7 +418,7 @@ Application code should set the 'nmsrs' member (which indicates the
size of the entries array), and the 'index' and 'data' members of each
array entry.
-4.19 KVM_SET_CPUID
+4.20 KVM_SET_CPUID
Capability: basic
Architectures: x86
@@ -446,7 +446,7 @@ struct kvm_cpuid {
struct kvm_cpuid_entry entries[0];
};
-4.20 KVM_SET_SIGNAL_MASK
+4.21 KVM_SET_SIGNAL_MASK
Capability: basic
Architectures: x86
@@ -468,7 +468,7 @@ struct kvm_signal_mask {
__u8 sigset[0];
};
-4.21 KVM_GET_FPU
+4.22 KVM_GET_FPU
Capability: basic
Architectures: x86
@@ -493,7 +493,7 @@ struct kvm_fpu {
__u32 pad2;
};
-4.22 KVM_SET_FPU
+4.23 KVM_SET_FPU
Capability: basic
Architectures: x86
@@ -518,7 +518,7 @@ struct kvm_fpu {
__u32 pad2;
};
-4.23 KVM_CREATE_IRQCHIP
+4.24 KVM_CREATE_IRQCHIP
Capability: KVM_CAP_IRQCHIP
Architectures: x86, ia64
@@ -531,7 +531,7 @@ 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.
-4.24 KVM_IRQ_LINE
+4.25 KVM_IRQ_LINE
Capability: KVM_CAP_IRQCHIP
Architectures: x86, ia64
@@ -552,7 +552,7 @@ struct kvm_irq_level {
__u32 level; /* 0 or 1 */
};
-4.25 KVM_GET_IRQCHIP
+4.26 KVM_GET_IRQCHIP
Capability: KVM_CAP_IRQCHIP
Architectures: x86, ia64
@@ -573,7 +573,7 @@ struct kvm_irqchip {
} chip;
};
-4.26 KVM_SET_IRQCHIP
+4.27 KVM_SET_IRQCHIP
Capability: KVM_CAP_IRQCHIP
Architectures: x86, ia64
@@ -594,7 +594,7 @@ struct kvm_irqchip {
} chip;
};
-4.27 KVM_XEN_HVM_CONFIG
+4.28 KVM_XEN_HVM_CONFIG
Capability: KVM_CAP_XEN_HVM
Architectures: x86
@@ -618,7 +618,7 @@ struct kvm_xen_hvm_config {
__u8 pad2[30];
};
-4.27 KVM_GET_CLOCK
+4.29 KVM_GET_CLOCK
Capability: KVM_CAP_ADJUST_CLOCK
Architectures: x86
@@ -636,7 +636,7 @@ struct kvm_clock_data {
__u32 pad[9];
};
-4.28 KVM_SET_CLOCK
+4.30 KVM_SET_CLOCK
Capability: KVM_CAP_ADJUST_CLOCK
Architectures: x86
@@ -654,7 +654,7 @@ struct kvm_clock_data {
__u32 pad[9];
};
-4.29 KVM_GET_VCPU_EVENTS
+4.31 KVM_GET_VCPU_EVENTS
Capability: KVM_CAP_VCPU_EVENTS
Extended by: KVM_CAP_INTR_SHADOW
@@ -693,7 +693,7 @@ struct kvm_vcpu_events {
KVM_VCPUEVENT_VALID_SHADOW may be set in the flags field to signal that
interrupt.shadow contains a valid state. Otherwise, this field is undefined.
-4.30 KVM_SET_VCPU_EVENTS
+4.32 KVM_SET_VCPU_EVENTS
Capability: KVM_CAP_VCPU_EVENTS
Extended by: KVM_CAP_INTR_SHADOW
@@ -719,7 +719,7 @@ If KVM_CAP_INTR_SHADOW is available, KVM_VCPUEVENT_VALID_SHADOW can be set in
the flags field to signal that interrupt.shadow contains a valid state and
shall be written into the VCPU.
-4.32 KVM_GET_DEBUGREGS
+4.33 KVM_GET_DEBUGREGS
Capability: KVM_CAP_DEBUGREGS
Architectures: x86
@@ -737,7 +737,7 @@ struct kvm_debugregs {
__u64 reserved[9];
};
-4.33 KVM_SET_DEBUGREGS
+4.34 KVM_SET_DEBUGREGS
Capability: KVM_CAP_DEBUGREGS
Architectures: x86
@@ -750,7 +750,7 @@ Writes debug registers into the vcpu.
See KVM_GET_DEBUGREGS for the data structure. The flags field is unused
yet and must be cleared on entry.
-4.34 KVM_SET_USER_MEMORY_REGION
+4.35 KVM_SET_USER_MEMORY_REGION
Capability: KVM_CAP_USER_MEM
Architectures: all
@@ -796,7 +796,7 @@ It is recommended to use this API instead of the KVM_SET_MEMORY_REGION ioctl.
The KVM_SET_MEMORY_REGION does not allow fine grained control over memory
allocation and is deprecated.
-4.35 KVM_SET_TSS_ADDR
+4.36 KVM_SET_TSS_ADDR
Capability: KVM_CAP_SET_TSS_ADDR
Architectures: x86
@@ -814,7 +814,7 @@ This ioctl is required on Intel-based hosts. This is needed on Intel hardware
because of a quirk in the virtualization implementation (see the internals
documentation when it pops into existence).
-4.36 KVM_ENABLE_CAP
+4.37 KVM_ENABLE_CAP
Capability: KVM_CAP_ENABLE_CAP
Architectures: ppc
@@ -849,7 +849,7 @@ function properly, this is the place to put them.
__u8 pad[64];
};
-4.37 KVM_GET_MP_STATE
+4.38 KVM_GET_MP_STATE
Capability: KVM_CAP_MP_STATE
Architectures: x86, ia64
@@ -874,12 +874,12 @@ Possible values are:
- KVM_MP_STATE_HALTED: the vcpu has executed a HLT instruction and
is waiting for an interrupt
- KVM_MP_STATE_SIPI_RECEIVED: the vcpu has just received a SIPI (vector
- accesible via KVM_GET_VCPU_EVENTS)
+ accessible via KVM_GET_VCPU_EVENTS)
This ioctl is only useful after KVM_CREATE_IRQCHIP. Without an in-kernel
irqchip, the multiprocessing state must be maintained by userspace.
-4.38 KVM_SET_MP_STATE
+4.39 KVM_SET_MP_STATE
Capability: KVM_CAP_MP_STATE
Architectures: x86, ia64
@@ -893,7 +893,7 @@ arguments.
This ioctl is only useful after KVM_CREATE_IRQCHIP. Without an in-kernel
irqchip, the multiprocessing state must be maintained by userspace.
-4.39 KVM_SET_IDENTITY_MAP_ADDR
+4.40 KVM_SET_IDENTITY_MAP_ADDR
Capability: KVM_CAP_SET_IDENTITY_MAP_ADDR
Architectures: x86
@@ -911,7 +911,7 @@ This ioctl is required on Intel-based hosts. This is needed on Intel hardware
because of a quirk in the virtualization implementation (see the internals
documentation when it pops into existence).
-4.40 KVM_SET_BOOT_CPU_ID
+4.41 KVM_SET_BOOT_CPU_ID
Capability: KVM_CAP_SET_BOOT_CPU_ID
Architectures: x86, ia64
@@ -923,7 +923,7 @@ Define which vcpu is the Bootstrap Processor (BSP). Values are the same
as the vcpu id in KVM_CREATE_VCPU. If this ioctl is not called, the default
is vcpu 0.
-4.41 KVM_GET_XSAVE
+4.42 KVM_GET_XSAVE
Capability: KVM_CAP_XSAVE
Architectures: x86
@@ -937,7 +937,7 @@ struct kvm_xsave {
This ioctl would copy current vcpu's xsave struct to the userspace.
-4.42 KVM_SET_XSAVE
+4.43 KVM_SET_XSAVE
Capability: KVM_CAP_XSAVE
Architectures: x86
@@ -951,7 +951,7 @@ struct kvm_xsave {
This ioctl would copy userspace's xsave struct to the kernel.
-4.43 KVM_GET_XCRS
+4.44 KVM_GET_XCRS
Capability: KVM_CAP_XCRS
Architectures: x86
@@ -974,7 +974,7 @@ struct kvm_xcrs {
This ioctl would copy current vcpu's xcrs to the userspace.
-4.44 KVM_SET_XCRS
+4.45 KVM_SET_XCRS
Capability: KVM_CAP_XCRS
Architectures: x86
@@ -997,7 +997,7 @@ struct kvm_xcrs {
This ioctl would set vcpu's xcr to the value userspace specified.
-4.45 KVM_GET_SUPPORTED_CPUID
+4.46 KVM_GET_SUPPORTED_CPUID
Capability: KVM_CAP_EXT_CPUID
Architectures: x86
@@ -1062,7 +1062,7 @@ emulate them efficiently. The fields in each entry are defined as follows:
eax, ebx, ecx, edx: the values returned by the cpuid instruction for
this function/index combination
-4.46 KVM_PPC_GET_PVINFO
+4.47 KVM_PPC_GET_PVINFO
Capability: KVM_CAP_PPC_GET_PVINFO
Architectures: ppc
@@ -1085,6 +1085,184 @@ of 4 instructions that make up a hypercall.
If any additional field gets added to this structure later on, a bit for that
additional piece of information will be set in the flags bitmap.
+4.48 KVM_ASSIGN_PCI_DEVICE
+
+Capability: KVM_CAP_DEVICE_ASSIGNMENT
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_pci_dev (in)
+Returns: 0 on success, -1 on error
+
+Assigns a host PCI device to the VM.
+
+struct kvm_assigned_pci_dev {
+ __u32 assigned_dev_id;
+ __u32 busnr;
+ __u32 devfn;
+ __u32 flags;
+ __u32 segnr;
+ union {
+ __u32 reserved[11];
+ };
+};
+
+The PCI device is specified by the triple segnr, busnr, and devfn.
+Identification in succeeding service requests is done via assigned_dev_id. The
+following flags are specified:
+
+/* Depends on KVM_CAP_IOMMU */
+#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
+
+4.49 KVM_DEASSIGN_PCI_DEVICE
+
+Capability: KVM_CAP_DEVICE_DEASSIGNMENT
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_pci_dev (in)
+Returns: 0 on success, -1 on error
+
+Ends PCI device assignment, releasing all associated resources.
+
+See KVM_CAP_DEVICE_ASSIGNMENT for the data structure. Only assigned_dev_id is
+used in kvm_assigned_pci_dev to identify the device.
+
+4.50 KVM_ASSIGN_DEV_IRQ
+
+Capability: KVM_CAP_ASSIGN_DEV_IRQ
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_irq (in)
+Returns: 0 on success, -1 on error
+
+Assigns an IRQ to a passed-through device.
+
+struct kvm_assigned_irq {
+ __u32 assigned_dev_id;
+ __u32 host_irq;
+ __u32 guest_irq;
+ __u32 flags;
+ union {
+ struct {
+ __u32 addr_lo;
+ __u32 addr_hi;
+ __u32 data;
+ } guest_msi;
+ __u32 reserved[12];
+ };
+};
+
+The following flags are defined:
+
+#define KVM_DEV_IRQ_HOST_INTX (1 << 0)
+#define KVM_DEV_IRQ_HOST_MSI (1 << 1)
+#define KVM_DEV_IRQ_HOST_MSIX (1 << 2)
+
+#define KVM_DEV_IRQ_GUEST_INTX (1 << 8)
+#define KVM_DEV_IRQ_GUEST_MSI (1 << 9)
+#define KVM_DEV_IRQ_GUEST_MSIX (1 << 10)
+
+It is not valid to specify multiple types per host or guest IRQ. However, the
+IRQ type of host and guest can differ or can even be null.
+
+4.51 KVM_DEASSIGN_DEV_IRQ
+
+Capability: KVM_CAP_ASSIGN_DEV_IRQ
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_irq (in)
+Returns: 0 on success, -1 on error
+
+Ends an IRQ assignment to a passed-through device.
+
+See KVM_ASSIGN_DEV_IRQ for the data structure. The target device is specified
+by assigned_dev_id, flags must correspond to the IRQ type specified on
+KVM_ASSIGN_DEV_IRQ. Partial deassignment of host or guest IRQ is allowed.
+
+4.52 KVM_SET_GSI_ROUTING
+
+Capability: KVM_CAP_IRQ_ROUTING
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_irq_routing (in)
+Returns: 0 on success, -1 on error
+
+Sets the GSI routing table entries, overwriting any previously set entries.
+
+struct kvm_irq_routing {
+ __u32 nr;
+ __u32 flags;
+ struct kvm_irq_routing_entry entries[0];
+};
+
+No flags are specified so far, the corresponding field must be set to zero.
+
+struct kvm_irq_routing_entry {
+ __u32 gsi;
+ __u32 type;
+ __u32 flags;
+ __u32 pad;
+ union {
+ struct kvm_irq_routing_irqchip irqchip;
+ struct kvm_irq_routing_msi msi;
+ __u32 pad[8];
+ } u;
+};
+
+/* gsi routing entry types */
+#define KVM_IRQ_ROUTING_IRQCHIP 1
+#define KVM_IRQ_ROUTING_MSI 2
+
+No flags are specified so far, the corresponding field must be set to zero.
+
+struct kvm_irq_routing_irqchip {
+ __u32 irqchip;
+ __u32 pin;
+};
+
+struct kvm_irq_routing_msi {
+ __u32 address_lo;
+ __u32 address_hi;
+ __u32 data;
+ __u32 pad;
+};
+
+4.53 KVM_ASSIGN_SET_MSIX_NR
+
+Capability: KVM_CAP_DEVICE_MSIX
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_msix_nr (in)
+Returns: 0 on success, -1 on error
+
+Set the number of MSI-X interrupts for an assigned device. This service can
+only be called once in the lifetime of an assigned device.
+
+struct kvm_assigned_msix_nr {
+ __u32 assigned_dev_id;
+ __u16 entry_nr;
+ __u16 padding;
+};
+
+#define KVM_MAX_MSIX_PER_DEV 256
+
+4.54 KVM_ASSIGN_SET_MSIX_ENTRY
+
+Capability: KVM_CAP_DEVICE_MSIX
+Architectures: x86 ia64
+Type: vm ioctl
+Parameters: struct kvm_assigned_msix_entry (in)
+Returns: 0 on success, -1 on error
+
+Specifies the routing of an MSI-X assigned device interrupt to a GSI. Setting
+the GSI vector to zero means disabling the interrupt.
+
+struct kvm_assigned_msix_entry {
+ __u32 assigned_dev_id;
+ __u32 gsi;
+ __u16 entry; /* The index of entry in the MSI-X table */
+ __u16 padding[3];
+};
+
5. The kvm_run structure
Application code obtains a pointer to the kvm_run structure by
diff --git a/Documentation/kvm/cpuid.txt b/Documentation/kvm/cpuid.txt
index 14a12ea..8820685 100644
--- a/Documentation/kvm/cpuid.txt
+++ b/Documentation/kvm/cpuid.txt
@@ -36,6 +36,9 @@ KVM_FEATURE_MMU_OP || 2 || deprecated.
KVM_FEATURE_CLOCKSOURCE2 || 3 || kvmclock available at msrs
|| || 0x4b564d00 and 0x4b564d01
------------------------------------------------------------------------------
+KVM_FEATURE_ASYNC_PF || 4 || async pf can be enabled by
+ || || writing to msr 0x4b564d02
+------------------------------------------------------------------------------
KVM_FEATURE_CLOCKSOURCE_STABLE_BIT || 24 || host will warn if no guest-side
|| || per-cpu warps are expected in
|| || kvmclock.
diff --git a/Documentation/kvm/locking.txt b/Documentation/kvm/locking.txt
new file mode 100644
index 0000000..3b4cd3b
--- /dev/null
+++ b/Documentation/kvm/locking.txt
@@ -0,0 +1,25 @@
+KVM Lock Overview
+=================
+
+1. Acquisition Orders
+---------------------
+
+(to be written)
+
+2. Reference
+------------
+
+Name: kvm_lock
+Type: raw_spinlock
+Arch: any
+Protects: - vm_list
+ - hardware virtualization enable/disable
+Comment: 'raw' because hardware enabling/disabling must be atomic /wrt
+ migration.
+
+Name: kvm_arch::tsc_write_lock
+Type: raw_spinlock
+Arch: x86
+Protects: - kvm_arch::{last_tsc_write,last_tsc_nsec,last_tsc_offset}
+ - tsc offset in vmcb
+Comment: 'raw' because updating the tsc offsets must not be preempted.
diff --git a/Documentation/kvm/mmu.txt b/Documentation/kvm/mmu.txt
index 142cc51..f46aa58 100644
--- a/Documentation/kvm/mmu.txt
+++ b/Documentation/kvm/mmu.txt
@@ -23,7 +23,7 @@ The mmu code attempts to satisfy the following requirements:
and framebuffer-based displays
- footprint: keep the amount of pinned kernel memory low (most memory
should be shrinkable)
-- reliablity: avoid multipage or GFP_ATOMIC allocations
+- reliability: avoid multipage or GFP_ATOMIC allocations
Acronyms
========
diff --git a/Documentation/kvm/msr.txt b/Documentation/kvm/msr.txt
index 8ddcfe8..d079aed 100644
--- a/Documentation/kvm/msr.txt
+++ b/Documentation/kvm/msr.txt
@@ -3,7 +3,6 @@ Glauber Costa <glommer@redhat.com>, Red Hat Inc, 2010
=====================================================
KVM makes use of some custom MSRs to service some requests.
-At present, this facility is only used by kvmclock.
Custom MSRs have a range reserved for them, that goes from
0x4b564d00 to 0x4b564dff. There are MSRs outside this area,
@@ -151,3 +150,38 @@ MSR_KVM_SYSTEM_TIME: 0x12
return PRESENT;
} else
return NON_PRESENT;
+
+MSR_KVM_ASYNC_PF_EN: 0x4b564d02
+ data: Bits 63-6 hold 64-byte aligned physical address of a
+ 64 byte memory area which must be in guest RAM and must be
+ zeroed. Bits 5-2 are reserved and should be zero. Bit 0 is 1
+ when asynchronous page faults are enabled on the vcpu 0 when
+ disabled. Bit 2 is 1 if asynchronous page faults can be injected
+ when vcpu is in cpl == 0.
+
+ First 4 byte of 64 byte memory location will be written to by
+ the hypervisor at the time of asynchronous page fault (APF)
+ injection to indicate type of asynchronous page fault. Value
+ of 1 means that the page referred to by the page fault is not
+ present. Value 2 means that the page is now available. Disabling
+ interrupt inhibits APFs. Guest must not enable interrupt
+ before the reason is read, or it may be overwritten by another
+ APF. Since APF uses the same exception vector as regular page
+ fault guest must reset the reason to 0 before it does
+ something that can generate normal page fault. If during page
+ fault APF reason is 0 it means that this is regular page
+ fault.
+
+ During delivery of type 1 APF cr2 contains a token that will
+ be used to notify a guest when missing page becomes
+ available. When page becomes available type 2 APF is sent with
+ cr2 set to the token associated with the page. There is special
+ kind of token 0xffffffff which tells vcpu that it should wake
+ up all processes waiting for APFs and no individual type 2 APFs
+ will be sent.
+
+ If APF is disabled while there are outstanding APFs, they will
+ not be delivered.
+
+ Currently type 2 APF will be always delivered on the same vcpu as
+ type 1 was, but guest should not rely on that.
diff --git a/Documentation/kvm/ppc-pv.txt b/Documentation/kvm/ppc-pv.txt
index a7f2244..3ab969c 100644
--- a/Documentation/kvm/ppc-pv.txt
+++ b/Documentation/kvm/ppc-pv.txt
@@ -136,7 +136,7 @@ Patched instructions
====================
The "ld" and "std" instructions are transormed to "lwz" and "stw" instructions
-respectively on 32 bit systems with an added offset of 4 to accomodate for big
+respectively on 32 bit systems with an added offset of 4 to accommodate for big
endianness.
The following is a list of mapping the Linux kernel performs when running as
diff --git a/Documentation/kvm/timekeeping.txt b/Documentation/kvm/timekeeping.txt
index 0c5033a..df894637 100644
--- a/Documentation/kvm/timekeeping.txt
+++ b/Documentation/kvm/timekeeping.txt
@@ -81,7 +81,7 @@ Mode 0: Single Timeout. This is a one-shot software timeout that counts down
when the gate is high (always true for timers 0 and 1). When the count
reaches zero, the output goes high.
-Mode 1: Triggered One-shot. The output is intially set high. When the gate
+Mode 1: Triggered One-shot. The output is initially set high. When the gate
line is set high, a countdown is initiated (which does not stop if the gate is
lowered), during which the output is set low. When the count reaches zero,
the output goes high.
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