[PATCH 2/2] KVM: Add documentation for KVM_ARM_SUITABLE_TARGET ioctl

[anup.patel@linaro.org (Anup Patel)]

To implement CPU=Host we have added KVM_ARM_SUITABLE_TARGET ioctl
which provides a CPU target type to user space for creating VCPU
matching underlying Host.

This patch adds info related to this new KVM_ARM_SUITABLE_TARGET
ioctl in the KVM API documentation.

Signed-off-by: Anup Patel <anup.patel@linaro.org>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@linaro.org>+
---
 Documentation/virtual/kvm/api.txt |   25 ++++++++++++++++++++-----
 1 file changed, 20 insertions(+), 5 deletions(-)

diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index ef925ea..1ae9721 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2283,7 +2283,7 @@ current state.  "addr" is ignored.
 Capability: basic
 Architectures: arm, arm64
 Type: vcpu ioctl
-Parameters: struct struct kvm_vcpu_init (in)
+Parameters: struct kvm_vcpu_init (in)
 Returns: 0 on success; -1 on error
 Errors:
  ?EINVAL: ???the target is unknown, or the combination of features is invalid.
@@ -2303,8 +2303,24 @@ Possible features:
 	- KVM_ARM_VCPU_EL1_32BIT: Starts the CPU in a 32bit mode.
 	  Depends on KVM_CAP_ARM_EL1_32BIT (arm64 only).
 
+4.83 KVM_ARM_SUITABLE_TARGET
 
-4.83 KVM_GET_REG_LIST
+Capability: basic
+Architectures: arm, arm64
+Type: vcpu ioctl
+Parameters: None
+Returns: 0 on success; -1 on error
+Errors:
+ ?EINVAL: ???no suitable target available for the host
+
+This queries KVM for suitable CPU target type which can be emulated by 
+KVM on underlying host. This is not a mandatory API and could be used
+to create VCPUs matching underlying host.
+
+The ioctl returns a target type which can be directly passed-back to 
+the KVM_ARM_VCPU_INIT ioctl.
+
+4.84 KVM_GET_REG_LIST
 
 Capability: basic
 Architectures: arm, arm64
@@ -2323,8 +2339,7 @@ struct kvm_reg_list {
 This ioctl returns the guest registers that are supported for the
 KVM_GET_ONE_REG/KVM_SET_ONE_REG calls.
 
-
-4.84 KVM_ARM_SET_DEVICE_ADDR
+4.85 KVM_ARM_SET_DEVICE_ADDR
 
 Capability: KVM_CAP_ARM_SET_DEVICE_ADDR
 Architectures: arm, arm64
@@ -2362,7 +2377,7 @@ 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.
 
-4.85 KVM_PPC_RTAS_DEFINE_TOKEN
+4.86 KVM_PPC_RTAS_DEFINE_TOKEN
 
 Capability: KVM_CAP_PPC_RTAS
 Architectures: ppc
-- 
1.7.9.5