On 25 November 2013 21:19, Anup Patel anup.patel@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