From aa024c2f35a07cc32e48c5f62a5807be01c09249 Mon Sep 17 00:00:00 2001 From: Marc Zyngier Date: Sun, 20 Jan 2013 18:28:13 -0500 Subject: KVM: ARM: Power State Coordination Interface implementation Implement the PSCI specification (ARM DEN 0022A) to control virtual CPUs being "powered" on or off. PSCI/KVM is detected using the KVM_CAP_ARM_PSCI capability. A virtual CPU can now be initialized in a "powered off" state, using the KVM_ARM_VCPU_POWER_OFF feature flag. The guest can use either SMC or HVC to execute a PSCI function. Reviewed-by: Will Deacon Signed-off-by: Marc Zyngier Signed-off-by: Christoffer Dall --- arch/arm/include/asm/kvm_emulate.h | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/arm/include/asm/kvm_emulate.h') diff --git a/arch/arm/include/asm/kvm_emulate.h b/arch/arm/include/asm/kvm_emulate.h index 4c1a073280be..fd611996bfb5 100644 --- a/arch/arm/include/asm/kvm_emulate.h +++ b/arch/arm/include/asm/kvm_emulate.h @@ -32,6 +32,11 @@ void kvm_inject_undefined(struct kvm_vcpu *vcpu); void kvm_inject_dabt(struct kvm_vcpu *vcpu, unsigned long addr); void kvm_inject_pabt(struct kvm_vcpu *vcpu, unsigned long addr); +static inline bool vcpu_mode_is_32bit(struct kvm_vcpu *vcpu) +{ + return 1; +} + static inline u32 *vcpu_pc(struct kvm_vcpu *vcpu) { return (u32 *)&vcpu->arch.regs.usr_regs.ARM_pc; @@ -42,6 +47,11 @@ static inline u32 *vcpu_cpsr(struct kvm_vcpu *vcpu) return (u32 *)&vcpu->arch.regs.usr_regs.ARM_cpsr; } +static inline void vcpu_set_thumb(struct kvm_vcpu *vcpu) +{ + *vcpu_cpsr(vcpu) |= PSR_T_BIT; +} + static inline bool mode_has_spsr(struct kvm_vcpu *vcpu) { unsigned long cpsr_mode = vcpu->arch.regs.usr_regs.ARM_cpsr & MODE_MASK; -- cgit v1.2.3