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| author | Alexander Graf <agraf@suse.de> | 2013-01-04 17:28:51 (GMT) |
|---|---|---|
| committer | Stuart Yoder <stuart.yoder@freescale.com> | 2013-04-11 22:29:33 (GMT) |
| commit | 923cd6023c3959f32bddaa55f66912be4360cd75 (patch) | |
| tree | 4201767bdd5deecb4d4202e53e3fbe7312487037 /arch/powerpc/kvm | |
| parent | 2d9f9089485f3e1ff7ce763a1e5d838f4c356dd5 (diff) | |
| download | linux-fsl-qoriq-923cd6023c3959f32bddaa55f66912be4360cd75.tar.xz | |
KVM: PPC: BookE: Add EPR ONE_REG sync
We need to be able to read and write the contents of the EPR register
from user space.
This patch implements that logic through the ONE_REG API and declares
its (never implemented) SREGS counterpart as deprecated.
Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/booke.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 940ec80..8779cd4c 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -300,6 +300,15 @@ static void set_guest_esr(struct kvm_vcpu *vcpu, u32 esr) #endif } +static unsigned long get_guest_epr(struct kvm_vcpu *vcpu) +{ +#ifdef CONFIG_KVM_BOOKE_HV + return mfspr(SPRN_GEPR); +#else + return vcpu->arch.epr; +#endif +} + /* Deliver the interrupt of the corresponding priority, if possible. */ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority) @@ -1405,6 +1414,11 @@ int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) &vcpu->arch.dbg_reg.dac[dac], sizeof(u64)); break; } + case KVM_REG_PPC_EPR: { + u32 epr = get_guest_epr(vcpu); + r = put_user(epr, (u32 __user *)(long)reg->addr); + break; + } #if defined(CONFIG_64BIT) case KVM_REG_PPC_EPCR: r = put_user(vcpu->arch.epcr, (u32 __user *)(long)reg->addr); @@ -1437,6 +1451,13 @@ int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg) (u64 __user *)(long)reg->addr, sizeof(u64)); break; } + case KVM_REG_PPC_EPR: { + u32 new_epr; + r = get_user(new_epr, (u32 __user *)(long)reg->addr); + if (!r) + kvmppc_set_epr(vcpu, new_epr); + break; + } #if defined(CONFIG_64BIT) case KVM_REG_PPC_EPCR: { u32 new_epcr; |