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authorAvi Kivity <avi@redhat.com>2011-05-11 16:30:51 +0400
committerAvi Kivity <avi@redhat.com>2011-07-12 12:44:55 +0400
commite76779339ba9c3d56f1a39ff0bfb1dfe7614b062 (patch)
treee741478a0dba0f6a0887155e9b0f1b08a58b86e7 /Documentation/virtual
parent4dd1b49c6d215dc41ce50c80b4868388b93f31a3 (diff)
downloadlinux-e76779339ba9c3d56f1a39ff0bfb1dfe7614b062.tar.xz
KVM: Document KVM_GET_LAPIC, KVM_SET_LAPIC ioctl
Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt32
1 files changed, 32 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 42542eb802ca..67cc0f5b9974 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -1291,6 +1291,38 @@ Returns the tsc frequency of the guest. The unit of the return value is
KHz. If the host has unstable tsc this ioctl returns -EIO instead as an
error.
+4.56 KVM_GET_LAPIC
+
+Capability: KVM_CAP_IRQCHIP
+Architectures: x86
+Type: vcpu ioctl
+Parameters: struct kvm_lapic_state (out)
+Returns: 0 on success, -1 on error
+
+#define KVM_APIC_REG_SIZE 0x400
+struct kvm_lapic_state {
+ char regs[KVM_APIC_REG_SIZE];
+};
+
+Reads the Local APIC registers and copies them into the input argument. The
+data format and layout are the same as documented in the architecture manual.
+
+4.57 KVM_SET_LAPIC
+
+Capability: KVM_CAP_IRQCHIP
+Architectures: x86
+Type: vcpu ioctl
+Parameters: struct kvm_lapic_state (in)
+Returns: 0 on success, -1 on error
+
+#define KVM_APIC_REG_SIZE 0x400
+struct kvm_lapic_state {
+ char regs[KVM_APIC_REG_SIZE];
+};
+
+Copies the input argument into the the Local APIC registers. The data format
+and layout are the same as documented in the architecture manual.
+
5. The kvm_run structure
Application code obtains a pointer to the kvm_run structure by