[PATCH 0/2] PSCI system off and reset for KVM ARM/ARM64

[Anup Patel]

(Adding Christoffer, forgot to add him to CC)

On Mon, Nov 25, 2013 at 9:27 PM, Anup Patel <anup.patel at linaro.org> wrote:
> On 25 November 2013 21:19, Anup Patel <anup.patel at linaro.org> wrote:
>> The Power State and Coordination Interface (PSCI) specification defines
>> SYSTEM_OFF and SYSTEM_RESET functions for system poweroff and reboot.
>>
>> This patchset adds emulation of PSCI SYSTEM_OFF and SYSTEM_RESET functions
>> in KVM ARM/ARM64 by forwarding them to user space (QEMU or KVMTOOL) using
>> KVM_EXIT_SHUTDOWN and KVM_EXIT_RESET exit reasons.
>>
>> To try this patch from guest kernel, we will need PSCI-based restart and
>> poweroff support in the guest kenel for both ARM and ARM64.
>>
>> Rob Herring has already submitted patches for PSCI-based restart and
>> poweroff in ARM kernel but these are not merged yet due unstable device
>> tree bindings of kernel PSCI support. We will be having similar patches
>> for PSCI-based restart and poweroff in ARM64 kernel.
>> (Refer http://www.spinics.net/lists/arm-kernel/msg262217.html)
>> (Refer http://www.spinics.net/lists/devicetree/msg05348.html)
>>
>> Anup Patel (2):
>>   KVM: Add KVM_EXIT_RESET to user space API header
>>   ARM/ARM64: KVM: Forward PSCI SYSTEM_OFF and SYSTEM_RESET to user
>>     space
>>
>>  arch/arm/include/asm/kvm_psci.h   |    2 +-
>>  arch/arm/include/uapi/asm/kvm.h   |    2 ++
>>  arch/arm/kvm/handle_exit.c        |    7 ++++++-
>>  arch/arm/kvm/psci.c               |   38 +++++++++++++++++++++++++++++--------
>>  arch/arm64/include/asm/kvm_psci.h |    2 +-
>>  arch/arm64/include/uapi/asm/kvm.h |    2 ++
>>  arch/arm64/kvm/handle_exit.c      |   10 ++++++----
>>  include/uapi/linux/kvm.h          |    1 +
>>  8 files changed, 49 insertions(+), 15 deletions(-)
>>
>> --
>> 1.7.9.5
>>
>
> Hi All,
>
> If anyone wants to try this patches using KVMTOOL then they
> can find guest kernel side PSCI patches and KVMTOOL patch
> attached here.
>
> Regards,
> Anup
>
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