path: root/Documentation
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authorChristoffer Dall <christoffer.dall@linaro.org>2014-10-16 16:14:43 +0200
committerChristoffer Dall <christoffer.dall@linaro.org>2014-12-13 14:15:25 +0100
commit3ad8b3de526a76fbe9466b366059e4958957b88f (patch)
tree8fc888631918c186df6ed6cca144560f3ee3afe8 /Documentation
parentarm/arm64: KVM: Don't clear the VCPU_POWER_OFF flag (diff)
arm/arm64: KVM: Correct KVM_ARM_VCPU_INIT power off option
The implementation of KVM_ARM_VCPU_INIT is currently not doing what userspace expects, namely making sure that a vcpu which may have been turned off using PSCI is returned to its initial state, which would be powered on if userspace does not set the KVM_ARM_VCPU_POWER_OFF flag. Implement the expected functionality and clarify the ABI. Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'Documentation')
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt
index 7610eaa4d491..bb82a906e51e 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual/kvm/api.txt
@@ -2455,7 +2455,8 @@ 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.
+ Depends on KVM_CAP_ARM_PSCI. If not set, the CPU will be powered on
+ and execute guest code when KVM_RUN is called.
- KVM_ARM_VCPU_EL1_32BIT: Starts the CPU in a 32bit mode.
Depends on KVM_CAP_ARM_EL1_32BIT (arm64 only).
- KVM_ARM_VCPU_PSCI_0_2: Emulate PSCI v0.2 for the CPU.