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| author | Marc Zyngier <marc.zyngier@arm.com> | 2013-01-20 18:28:13 -0500 |
|---|---|---|
| committer | Christoffer Dall <c.dall@virtualopensystems.com> | 2013-01-23 13:29:18 -0500 |
| commit | aa024c2f35a07cc32e48c5f62a5807be01c09249 (patch) | |
| tree | 0fd5b1963f2a7e455d94357ae49be5c8cbbf6395 /Documentation/virtual | |
| parent | 45e96ea6b369539a37040a8df9c59a39f073d9d6 (diff) | |
| download | linux-exynos-aa024c2f35a07cc32e48c5f62a5807be01c09249.tar.gz linux-exynos-aa024c2f35a07cc32e48c5f62a5807be01c09249.tar.bz2 linux-exynos-aa024c2f35a07cc32e48c5f62a5807be01c09249.zip | |
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.txt | 4 |
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 |