diff options
Diffstat (limited to 'arch/powerpc/kvm/44x.c')
| -rw-r--r-- | arch/powerpc/kvm/44x.c | 19 |
1 files changed, 8 insertions, 11 deletions
diff --git a/arch/powerpc/kvm/44x.c b/arch/powerpc/kvm/44x.c index 22054b164b5..05d72fc8b47 100644 --- a/arch/powerpc/kvm/44x.c +++ b/arch/powerpc/kvm/44x.c @@ -96,21 +96,14 @@ void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu) void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) { - int i; - - /* Mark every guest entry in the shadow TLB entry modified, so that they - * will all be reloaded on the next vcpu run (instead of being - * demand-faulted). */ - for (i = 0; i <= tlb_44x_hwater; i++) - kvmppc_tlbe_set_modified(vcpu, i); } void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) { - /* Don't leave guest TLB entries resident when being de-scheduled. */ - /* XXX It would be nice to differentiate between heavyweight exit and - * sched_out here, since we could avoid the TLB flush for heavyweight - * exits. */ + /* XXX Since every guest uses TS=1 TID=0/1 mappings, we can't leave any TLB + * entries around when we're descheduled, so we must completely flush the + * TLB of all guest mappings. On the other hand, if there is only one + * guest, this flush is completely unnecessary. */ _tlbia(); } @@ -130,6 +123,7 @@ int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu) { struct kvmppc_vcpu_44x *vcpu_44x = to_44x(vcpu); struct kvmppc_44x_tlbe *tlbe = &vcpu_44x->guest_tlb[0]; + int i; tlbe->tid = 0; tlbe->word0 = PPC44x_TLB_16M | PPC44x_TLB_VALID; @@ -148,6 +142,9 @@ int kvmppc_core_vcpu_setup(struct kvm_vcpu *vcpu) * CCR1[TCS]. */ vcpu->arch.ccr1 = mfspr(SPRN_CCR1); + for (i = 0; i < ARRAY_SIZE(vcpu_44x->shadow_refs); i++) + vcpu_44x->shadow_refs[i].gtlb_index = -1; + return 0; } |