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| author | Alexander Graf <agraf@suse.de> | 2014-06-18 21:56:55 +0200 |
|---|---|---|
| committer | Alexander Graf <agraf@suse.de> | 2014-07-28 18:30:18 +0200 |
| commit | 8de12015ff75967b16f70e5938b151390dac9b77 (patch) | |
| tree | 8b934668765b6a2fa4a9eb9ffc9f6389d02e3bfb /arch/powerpc/kvm | |
| parent | d69614a295aef72f8fb22da8e3ccf1a8f19a7ffc (diff) | |
| download | linux-rpi3-8de12015ff75967b16f70e5938b151390dac9b77.tar.gz linux-rpi3-8de12015ff75967b16f70e5938b151390dac9b77.tar.bz2 linux-rpi3-8de12015ff75967b16f70e5938b151390dac9b77.zip | |
KVM: PPC: Expose helper functions for data/inst faults
We're going to implement guest code interpretation in KVM for some rare
corner cases. This code needs to be able to inject data and instruction
faults into the guest when it encounters them.
Expose generic APIs to do this in a reasonably subarch agnostic fashion.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/book3s.c | 17 | ||||
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 16 |
2 files changed, 27 insertions, 6 deletions
diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index de8da3387e90..dd03f6b299ba 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -230,6 +230,23 @@ void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu) kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL); } +void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar, + ulong flags) +{ + kvmppc_set_dar(vcpu, dar); + kvmppc_set_dsisr(vcpu, flags); + kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE); +} + +void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags) +{ + u64 msr = kvmppc_get_msr(vcpu); + msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); + msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT); + kvmppc_set_msr_fast(vcpu, msr); + kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE); +} + int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) { int deliver = 1; diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 2f697b49073b..f30948a17c03 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -185,24 +185,28 @@ static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu, set_bit(priority, &vcpu->arch.pending_exceptions); } -static void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, - ulong dear_flags, ulong esr_flags) +void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu, + ulong dear_flags, ulong esr_flags) { vcpu->arch.queued_dear = dear_flags; vcpu->arch.queued_esr = esr_flags; kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS); } -static void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, - ulong dear_flags, ulong esr_flags) +void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, + ulong dear_flags, ulong esr_flags) { vcpu->arch.queued_dear = dear_flags; vcpu->arch.queued_esr = esr_flags; kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE); } -static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, - ulong esr_flags) +void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu) +{ + kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS); +} + +void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong esr_flags) { vcpu->arch.queued_esr = esr_flags; kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE); |