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authorMarc Zyngier <marc.zyngier@arm.com>2013-01-21 03:28:13 +0400
committerChristoffer Dall <c.dall@virtualopensystems.com>2013-01-23 22:29:18 +0400
commitaa024c2f35a07cc32e48c5f62a5807be01c09249 (patch)
tree0fd5b1963f2a7e455d94357ae49be5c8cbbf6395 /Documentation/virtual
parent45e96ea6b369539a37040a8df9c59a39f073d9d6 (diff)
downloadlinux-aa024c2f35a07cc32e48c5f62a5807be01c09249.tar.xz
KVM: ARM: Power State Coordination Interface implementation
Implement the PSCI specification (ARM DEN 0022A) to control virtual CPUs being "powered" on or off. PSCI/KVM is detected using the KVM_CAP_ARM_PSCI capability. A virtual CPU can now be initialized in a "powered off" state, using the KVM_ARM_VCPU_POWER_OFF feature flag. The guest can use either SMC or HVC to execute a PSCI function. Reviewed-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <c.dall@virtualopensystems.com>
Diffstat (limited to 'Documentation/virtual')
-rw-r--r--Documentation/virtual/kvm/api.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 38066a7a74e1..c25439a58274 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2185,6 +2185,10 @@ return ENOEXEC for that vcpu.
Note that because some registers reflect machine topology, all vcpus
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.
+
4.78 KVM_GET_REG_LIST