From ab9fc4056af338248640ddb18497be386360363d Mon Sep 17 00:00:00 2001 From: Scott Wood Date: Tue, 20 Dec 2011 15:34:39 +0000 Subject: KVM: PPC: e500: emulate tlbilx tlbilx is the new, preferred invalidation instruction. It is not found on e500 prior to e500mc, but there should be no harm in supporting it on all e500. Based on code from Ashish Kalra . Signed-off-by: Scott Wood Signed-off-by: Alexander Graf Signed-off-by: Avi Kivity --- arch/powerpc/kvm/e500_tlb.c | 52 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) (limited to 'arch/powerpc/kvm/e500_tlb.c') diff --git a/arch/powerpc/kvm/e500_tlb.c b/arch/powerpc/kvm/e500_tlb.c index c8ce51d03a2f..6eb5d655bdb4 100644 --- a/arch/powerpc/kvm/e500_tlb.c +++ b/arch/powerpc/kvm/e500_tlb.c @@ -631,6 +631,58 @@ int kvmppc_e500_emul_tlbivax(struct kvm_vcpu *vcpu, int ra, int rb) return EMULATE_DONE; } +static void tlbilx_all(struct kvmppc_vcpu_e500 *vcpu_e500, int tlbsel, + int pid, int rt) +{ + struct kvm_book3e_206_tlb_entry *tlbe; + int tid, esel; + + /* invalidate all entries */ + for (esel = 0; esel < vcpu_e500->gtlb_params[tlbsel].entries; esel++) { + tlbe = get_entry(vcpu_e500, tlbsel, esel); + tid = get_tlb_tid(tlbe); + if (rt == 0 || tid == pid) { + inval_gtlbe_on_host(vcpu_e500, tlbsel, esel); + kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); + } + } +} + +static void tlbilx_one(struct kvmppc_vcpu_e500 *vcpu_e500, int pid, + int ra, int rb) +{ + int tlbsel, esel; + gva_t ea; + + ea = kvmppc_get_gpr(&vcpu_e500->vcpu, rb); + if (ra) + ea += kvmppc_get_gpr(&vcpu_e500->vcpu, ra); + + for (tlbsel = 0; tlbsel < 2; tlbsel++) { + esel = kvmppc_e500_tlb_index(vcpu_e500, ea, tlbsel, pid, -1); + if (esel >= 0) { + inval_gtlbe_on_host(vcpu_e500, tlbsel, esel); + kvmppc_e500_gtlbe_invalidate(vcpu_e500, tlbsel, esel); + break; + } + } +} + +int kvmppc_e500_emul_tlbilx(struct kvm_vcpu *vcpu, int rt, int ra, int rb) +{ + struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); + int pid = get_cur_spid(vcpu); + + if (rt == 0 || rt == 1) { + tlbilx_all(vcpu_e500, 0, pid, rt); + tlbilx_all(vcpu_e500, 1, pid, rt); + } else if (rt == 3) { + tlbilx_one(vcpu_e500, pid, ra, rb); + } + + return EMULATE_DONE; +} + int kvmppc_e500_emul_tlbre(struct kvm_vcpu *vcpu) { struct kvmppc_vcpu_e500 *vcpu_e500 = to_e500(vcpu); -- cgit v1.2.3