On Thu, Feb 06, 2014 at 05:01:41PM +0530, Anup Patel wrote:
As-per PSCI v0.2, the source CPU provides physical address of "entry point" and "context id" for starting a target CPU.
Current emulation of CPU_ON function does not consider physical address of "context id" hence this patch updates kvm_psci_vcpu_on() such that it works for both PSCI v0.1 and PSCI v0.2.
Signed-off-by: Anup Patel anup.patel@linaro.org Signed-off-by: Pranavkumar Sawargaonkar pranavkumar@linaro.org
arch/arm/kvm/psci.c | 11 ++++++++--- 1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c index 75447a3..675866e 100644 --- a/arch/arm/kvm/psci.c +++ b/arch/arm/kvm/psci.c @@ -32,12 +32,14 @@ static void kvm_psci_vcpu_off(struct kvm_vcpu *vcpu) vcpu->arch.pause = true; } -static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu) +static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu,
int psci_version)
I thought this would be what you have kvm_psci_version() for?
{ struct kvm *kvm = source_vcpu->kvm; struct kvm_vcpu *vcpu = NULL, *tmp; wait_queue_head_t *wq; unsigned long cpu_id;
- unsigned long context_id; unsigned long mpidr; phys_addr_t target_pc; int i;
@@ -62,6 +64,7 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu) return KVM_PSCI_RET_INVAL; target_pc = *vcpu_reg(source_vcpu, 2);
- context_id = *vcpu_reg(source_vcpu, 3);
kvm_reset_vcpu(vcpu); @@ -76,6 +79,8 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu) kvm_vcpu_set_be(vcpu); *vcpu_pc(vcpu) = target_pc;
- if (psci_version != KVM_ARM_PSCI_0_1)
*vcpu_reg(vcpu, 0) = context_id;@@ -180,7 +185,7 @@ static int kvm_psci_0_2_call(struct kvm_vcpu *vcpu) break; case KVM_PSCI_0_2_FN_CPU_ON: case KVM_PSCI_0_2_FN64_CPU_ON:
val = kvm_psci_vcpu_on(vcpu);
val = kvm_psci_vcpu_on(vcpu, KVM_ARM_PSCI_0_2);@@ -234,7 +239,7 @@ static int kvm_psci_0_1_call(struct kvm_vcpu *vcpu) val = KVM_PSCI_RET_SUCCESS; break; case KVM_PSCI_FN_CPU_ON:
val = kvm_psci_vcpu_on(vcpu);
val = kvm_psci_vcpu_on(vcpu, KVM_ARM_PSCI_0_1);-- 1.7.9.5
otherwise: Reviewed-by: Christoffer Dall christoffer.dall@linaro.org