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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2014-10-16 18:14:43 +0400 |
|---|---|---|
| committer | Luis Henriques <luis.henriques@canonical.com> | 2015-05-20 15:25:50 +0300 |
| commit | a897742fcf09dea4e7823eaed4d48cb0fe46667a (patch) | |
| tree | 5fb154fd87b09be69225033bbafdd9ecfd374d48 /Documentation | |
| parent | 24cc91a23aaa5ff1ec66e83e092455484647bd34 (diff) | |
| download | linux-a897742fcf09dea4e7823eaed4d48cb0fe46667a.tar.xz | |
arm/arm64: KVM: Correct KVM_ARM_VCPU_INIT power off option
commit 3ad8b3de526a76fbe9466b366059e4958957b88f upstream.
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>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index 612e6e99d1e5..769c2cb7f9b3 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -2382,7 +2382,8 @@ 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. |