From b0a1835d53c57bc38b36867c04436b60454cb610 Mon Sep 17 00:00:00 2001 From: Liu Yu Date: Tue, 17 Feb 2009 16:52:08 +0800 Subject: KVM: ppc: Add emulation of E500 register mmucsr0 Latest kernel flushes TLB via mmucsr0. Signed-off-by: Liu Yu Acked-by: Hollis Blanchard Signed-off-by: Avi Kivity --- arch/powerpc/kvm/e500_emulate.c | 8 ++++++++ arch/powerpc/kvm/e500_tlb.c | 16 ++++++++++++++++ arch/powerpc/kvm/e500_tlb.h | 1 + 3 files changed, 25 insertions(+) (limited to 'arch/powerpc/kvm') diff --git a/arch/powerpc/kvm/e500_emulate.c b/arch/powerpc/kvm/e500_emulate.c index 7a98d4a4c1e..3f760414b9f 100644 --- a/arch/powerpc/kvm/e500_emulate.c +++ b/arch/powerpc/kvm/e500_emulate.c @@ -105,6 +105,11 @@ int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) case SPRN_HID1: vcpu_e500->hid1 = vcpu->arch.gpr[rs]; break; + case SPRN_MMUCSR0: + emulated = kvmppc_e500_emul_mt_mmucsr0(vcpu_e500, + vcpu->arch.gpr[rs]); + break; + /* extra exceptions */ case SPRN_IVOR32: vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL] = vcpu->arch.gpr[rs]; @@ -172,6 +177,9 @@ int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) case SPRN_HID1: vcpu->arch.gpr[rt] = vcpu_e500->hid1; break; + case SPRN_MMUCSR0: + vcpu->arch.gpr[rt] = 0; break; + /* extra exceptions */ case SPRN_IVOR32: vcpu->arch.gpr[rt] = vcpu->arch.ivor[BOOKE_IRQPRIO_SPE_UNAVAIL]; diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index d437160d388..72386ddbd9d 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -391,6 +391,22 @@ static int kvmppc_e500_gtlbe_invalidate(struct kvmppc_vcpu_e500 *vcpu_e500, return 0; } +int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *vcpu_e500, ulong value) +{ + int esel; + + if (value & MMUCSR0_TLB0FI) + for (esel = 0; esel < vcpu_e500->guest_tlb_size[0]; esel++) + kvmppc_e500_gtlbe_invalidate(vcpu_e500, 0, esel); + if (value & MMUCSR0_TLB1FI) + for (esel = 0; esel < vcpu_e500->guest_tlb_size[1]; esel++) + kvmppc_e500_gtlbe_invalidate(vcpu_e500, 1, esel); + + _tlbil_all(); + + return EMULATE_DONE; +} + int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); diff --git a/arch/powerpc/kvm/e500_tlb.h b/arch/powerpc/kvm/e500_tlb.h index ab49e935518..4d5cc0f7d79 100644 --- a/arch/powerpc/kvm/e500_tlb.h +++ b/arch/powerpc/kvm/e500_tlb.h @@ -44,6 +44,7 @@ | E500_TLB_USER_PERM_MASK | E500_TLB_SUPER_PERM_MASK) extern void kvmppc_dump_tlbs(struct kvm_vcpu *); +extern int kvmppc_e500_emul_mt_mmucsr0(struct kvmppc_vcpu_e500 *, ulong); extern int kvmppc_e500_emul_tlbwe(struct kvm_vcpu *); extern int kvmppc_e500_emul_tlbre(struct kvm_vcpu *); extern int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *, int, int); -- cgit v1.2.3