diff options
Diffstat (limited to 'arch/powerpc/kvm')
| -rw-r--r-- | arch/powerpc/kvm/booke_interrupts.S | 1 | ||||
| -rw-r--r-- | arch/powerpc/kvm/powerpc.c | 13 |
2 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kvm/booke_interrupts.S b/arch/powerpc/kvm/booke_interrupts.S index 1cc471faac2..b58ccae9590 100644 --- a/arch/powerpc/kvm/booke_interrupts.S +++ b/arch/powerpc/kvm/booke_interrupts.S @@ -380,7 +380,6 @@ lightweight_exit: * because host interrupt handlers would get confused. */ lwz r1, VCPU_GPR(r1)(r4) - /* XXX handle USPRG0 */ /* Host interrupt handlers may have clobbered these guest-readable * SPRGs, so we need to reload them here with the guest's values. */ lwz r3, VCPU_SPRG4(r4) diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c index ec3d2e75c0a..9e6aa8bfd16 100644 --- a/arch/powerpc/kvm/powerpc.c +++ b/arch/powerpc/kvm/powerpc.c @@ -298,12 +298,25 @@ void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { +#ifdef CONFIG_BOOKE + /* + * vrsave (formerly usprg0) isn't used by Linux, but may + * be used by the guest. + * + * On non-booke this is associated with Altivec and + * is handled by code in book3s.c. + */ + mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); +#endif kvmppc_core_vcpu_load(vcpu, cpu); } void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) { kvmppc_core_vcpu_put(vcpu); +#ifdef CONFIG_BOOKE + vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); +#endif } int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |