To implement CPU=Host we have added KVM_ARM_PREFERRED_TARGET
ioctl which provides information to user space required for
creating VCPU matching underlying Host.
This patch adds info related to this new KVM_ARM_PREFERRED_TARGET
ioctl in the KVM API documentation.
Signed-off-by: Anup Patel <anup.patel@xxxxxxxxxx>
Signed-off-by: Pranavkumar Sawargaonkar <pranavkumar@xxxxxxxxxx>
---
Documentation/virtual/kvm/api.txt | 26 ++++++++++++++++++++++----
1 file changed, 22 insertions(+), 4 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index ef925ea..85f8026 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2303,8 +2303,27 @@ 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_PREFERRED_TARGET
-4.83 KVM_GET_REG_LIST
+Capability: basic
+Architectures: arm, arm64
+Type: vcpu ioctl
+Parameters: struct struct kvm_vcpu_init (out)
+Returns: 0 on success; -1 on error
+Errors:
+ EINVAL: no preferred target available for the host
+
+This queries KVM for preferred CPU target type which can be emulated
+by KVM on underlying host.
+
+The ioctl returns struct kvm_vcpu_init instance containing information
+about preferred CPU target type and optional features available for it.
+
+The information returned by this ioctl can be used to prepare instance
+of struct kvm_vcpu_init for KVM_ARM_VCPU_INIT ioctl which will result
+in VCPU matching underlying host.
+
+4.84 KVM_GET_REG_LIST
Capability: basic
Architectures: arm, arm64
@@ -2323,8 +2342,7 @@ 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 +2380,7 @@ 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
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