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| author | Christoffer Dall <christoffer.dall@linaro.org> | 2015-05-04 09:25:11 +0800 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-05-11 07:07:32 -0400 |
| commit | 964cce8df8759c57ca0002eb20cdf7aba138a6e6 (patch) | |
| tree | db73491ae452772a8c0ed34d8bd34c73e078139f /Documentation/virtual | |
| parent | e8234528bd6cd836672358d6aeaa3ba2b0eae5cf (diff) | |
| download | lwn-964cce8df8759c57ca0002eb20cdf7aba138a6e6.tar.gz lwn-964cce8df8759c57ca0002eb20cdf7aba138a6e6.zip | |
arm/arm64: KVM: Turn off vcpus on PSCI shutdown/reboot
commit cf5d318865e25f887d49a0c6083bbc6dcd1905b1 upstream.
When a vcpu calls SYSTEM_OFF or SYSTEM_RESET with PSCI v0.2, the vcpus
should really be turned off for the VM adhering to the suggestions in
the PSCI spec, and it's the sane thing to do.
Also, clarify the behavior and expectations for exits to user space with
the KVM_EXIT_SYSTEM_EVENT case.
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: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'Documentation/virtual')
| -rw-r--r-- | Documentation/virtual/kvm/api.txt | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/Documentation/virtual/kvm/api.txt b/Documentation/virtual/kvm/api.txt index bb82a906e51e..702bb2557db8 100644 --- a/Documentation/virtual/kvm/api.txt +++ b/Documentation/virtual/kvm/api.txt @@ -2952,6 +2952,15 @@ HVC instruction based PSCI call from the vcpu. The 'type' field describes the system-level event type. The 'flags' field describes architecture specific flags for the system-level event. +Valid values for 'type' are: + KVM_SYSTEM_EVENT_SHUTDOWN -- the guest has requested a shutdown of the + VM. Userspace is not obliged to honour this, and if it does honour + this does not need to destroy the VM synchronously (ie it may call + KVM_RUN again before shutdown finally occurs). + KVM_SYSTEM_EVENT_RESET -- the guest has requested a reset of the VM. + As with SHUTDOWN, userspace can choose to ignore the request, or + to schedule the reset to occur in the future and may call KVM_RUN again. + /* Fix the size of the union. */ char padding[256]; }; |