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Diffstat (limited to 'arch/powerpc/kvm/emulate.c')
-rw-r--r--arch/powerpc/kvm/emulate.c118
1 files changed, 67 insertions, 51 deletions
diff --git a/arch/powerpc/kvm/emulate.c b/arch/powerpc/kvm/emulate.c
index 4a9ac6640fad..cb72a65f4ecc 100644
--- a/arch/powerpc/kvm/emulate.c
+++ b/arch/powerpc/kvm/emulate.c
@@ -83,6 +83,9 @@ void kvmppc_emulate_dec(struct kvm_vcpu *vcpu)
pr_debug("mtDEC: %x\n", vcpu->arch.dec);
#ifdef CONFIG_PPC64
+ /* mtdec lowers the interrupt line when positive. */
+ kvmppc_core_dequeue_dec(vcpu);
+
/* POWER4+ triggers a dec interrupt if the value is < 0 */
if (vcpu->arch.dec & 0x80000000) {
hrtimer_try_to_cancel(&vcpu->arch.dec_timer);
@@ -140,14 +143,18 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
pr_debug(KERN_INFO "Emulating opcode %d / %d\n", get_op(inst), get_xop(inst));
+ /* Try again next time */
+ if (inst == KVM_INST_FETCH_FAILED)
+ return EMULATE_DONE;
+
switch (get_op(inst)) {
case OP_TRAP:
#ifdef CONFIG_PPC64
case OP_TRAP_64:
+ kvmppc_core_queue_program(vcpu, SRR1_PROGTRAP);
#else
- vcpu->arch.esr |= ESR_PTR;
+ kvmppc_core_queue_program(vcpu, vcpu->arch.esr | ESR_PTR);
#endif
- kvmppc_core_queue_program(vcpu);
advance = 0;
break;
@@ -167,14 +174,14 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
case OP_31_XOP_STWX:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
4, 1);
break;
case OP_31_XOP_STBX:
rs = get_rs(inst);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
1, 1);
break;
@@ -183,14 +190,14 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rb = get_rb(inst);
- ea = vcpu->arch.gpr[rb];
+ ea = kvmppc_get_gpr(vcpu, rb);
if (ra)
- ea += vcpu->arch.gpr[ra];
+ ea += kvmppc_get_gpr(vcpu, ra);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
1, 1);
- vcpu->arch.gpr[rs] = ea;
+ kvmppc_set_gpr(vcpu, rs, ea);
break;
case OP_31_XOP_LHZX:
@@ -203,12 +210,12 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rb = get_rb(inst);
- ea = vcpu->arch.gpr[rb];
+ ea = kvmppc_get_gpr(vcpu, rb);
if (ra)
- ea += vcpu->arch.gpr[ra];
+ ea += kvmppc_get_gpr(vcpu, ra);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- vcpu->arch.gpr[ra] = ea;
+ kvmppc_set_gpr(vcpu, ra, ea);
break;
case OP_31_XOP_MFSPR:
@@ -217,47 +224,49 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
switch (sprn) {
case SPRN_SRR0:
- vcpu->arch.gpr[rt] = vcpu->arch.srr0; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.srr0); break;
case SPRN_SRR1:
- vcpu->arch.gpr[rt] = vcpu->arch.srr1; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.srr1); break;
case SPRN_PVR:
- vcpu->arch.gpr[rt] = vcpu->arch.pvr; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.pvr); break;
case SPRN_PIR:
- vcpu->arch.gpr[rt] = vcpu->vcpu_id; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->vcpu_id); break;
case SPRN_MSSSR0:
- vcpu->arch.gpr[rt] = 0; break;
+ kvmppc_set_gpr(vcpu, rt, 0); break;
/* Note: mftb and TBRL/TBWL are user-accessible, so
* the guest can always access the real TB anyways.
* In fact, we probably will never see these traps. */
case SPRN_TBWL:
- vcpu->arch.gpr[rt] = get_tb() >> 32; break;
+ kvmppc_set_gpr(vcpu, rt, get_tb() >> 32); break;
case SPRN_TBWU:
- vcpu->arch.gpr[rt] = get_tb(); break;
+ kvmppc_set_gpr(vcpu, rt, get_tb()); break;
case SPRN_SPRG0:
- vcpu->arch.gpr[rt] = vcpu->arch.sprg0; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg0); break;
case SPRN_SPRG1:
- vcpu->arch.gpr[rt] = vcpu->arch.sprg1; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg1); break;
case SPRN_SPRG2:
- vcpu->arch.gpr[rt] = vcpu->arch.sprg2; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg2); break;
case SPRN_SPRG3:
- vcpu->arch.gpr[rt] = vcpu->arch.sprg3; break;
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.sprg3); break;
/* Note: SPRG4-7 are user-readable, so we don't get
* a trap. */
case SPRN_DEC:
{
u64 jd = get_tb() - vcpu->arch.dec_jiffies;
- vcpu->arch.gpr[rt] = vcpu->arch.dec - jd;
- pr_debug(KERN_INFO "mfDEC: %x - %llx = %lx\n", vcpu->arch.dec, jd, vcpu->arch.gpr[rt]);
+ kvmppc_set_gpr(vcpu, rt, vcpu->arch.dec - jd);
+ pr_debug(KERN_INFO "mfDEC: %x - %llx = %lx\n",
+ vcpu->arch.dec, jd,
+ kvmppc_get_gpr(vcpu, rt));
break;
}
default:
emulated = kvmppc_core_emulate_mfspr(vcpu, sprn, rt);
if (emulated == EMULATE_FAIL) {
printk("mfspr: unknown spr %x\n", sprn);
- vcpu->arch.gpr[rt] = 0;
+ kvmppc_set_gpr(vcpu, rt, 0);
}
break;
}
@@ -269,7 +278,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
rb = get_rb(inst);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
2, 1);
break;
@@ -278,14 +287,14 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rb = get_rb(inst);
- ea = vcpu->arch.gpr[rb];
+ ea = kvmppc_get_gpr(vcpu, rb);
if (ra)
- ea += vcpu->arch.gpr[ra];
+ ea += kvmppc_get_gpr(vcpu, ra);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
2, 1);
- vcpu->arch.gpr[ra] = ea;
+ kvmppc_set_gpr(vcpu, ra, ea);
break;
case OP_31_XOP_MTSPR:
@@ -293,9 +302,9 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
rs = get_rs(inst);
switch (sprn) {
case SPRN_SRR0:
- vcpu->arch.srr0 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.srr0 = kvmppc_get_gpr(vcpu, rs); break;
case SPRN_SRR1:
- vcpu->arch.srr1 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.srr1 = kvmppc_get_gpr(vcpu, rs); break;
/* XXX We need to context-switch the timebase for
* watchdog and FIT. */
@@ -305,18 +314,18 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
case SPRN_MSSSR0: break;
case SPRN_DEC:
- vcpu->arch.dec = vcpu->arch.gpr[rs];
+ vcpu->arch.dec = kvmppc_get_gpr(vcpu, rs);
kvmppc_emulate_dec(vcpu);
break;
case SPRN_SPRG0:
- vcpu->arch.sprg0 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.sprg0 = kvmppc_get_gpr(vcpu, rs); break;
case SPRN_SPRG1:
- vcpu->arch.sprg1 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.sprg1 = kvmppc_get_gpr(vcpu, rs); break;
case SPRN_SPRG2:
- vcpu->arch.sprg2 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.sprg2 = kvmppc_get_gpr(vcpu, rs); break;
case SPRN_SPRG3:
- vcpu->arch.sprg3 = vcpu->arch.gpr[rs]; break;
+ vcpu->arch.sprg3 = kvmppc_get_gpr(vcpu, rs); break;
default:
emulated = kvmppc_core_emulate_mtspr(vcpu, sprn, rs);
@@ -348,7 +357,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
rb = get_rb(inst);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
4, 0);
break;
@@ -363,7 +372,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
rb = get_rb(inst);
emulated = kvmppc_handle_store(run, vcpu,
- vcpu->arch.gpr[rs],
+ kvmppc_get_gpr(vcpu, rs),
2, 0);
break;
@@ -382,7 +391,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 4, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
case OP_LBZ:
@@ -394,35 +403,39 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 1, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
case OP_STW:
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
4, 1);
break;
case OP_STWU:
ra = get_ra(inst);
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
4, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
case OP_STB:
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
1, 1);
break;
case OP_STBU:
ra = get_ra(inst);
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
1, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
case OP_LHZ:
@@ -434,21 +447,23 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
ra = get_ra(inst);
rt = get_rt(inst);
emulated = kvmppc_handle_load(run, vcpu, rt, 2, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
case OP_STH:
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
2, 1);
break;
case OP_STHU:
ra = get_ra(inst);
rs = get_rs(inst);
- emulated = kvmppc_handle_store(run, vcpu, vcpu->arch.gpr[rs],
+ emulated = kvmppc_handle_store(run, vcpu,
+ kvmppc_get_gpr(vcpu, rs),
2, 1);
- vcpu->arch.gpr[ra] = vcpu->arch.paddr_accessed;
+ kvmppc_set_gpr(vcpu, ra, vcpu->arch.paddr_accessed);
break;
default:
@@ -461,6 +476,7 @@ int kvmppc_emulate_instruction(struct kvm_run *run, struct kvm_vcpu *vcpu)
advance = 0;
printk(KERN_ERR "Couldn't emulate instruction 0x%08x "
"(op %d xop %d)\n", inst, get_op(inst), get_xop(inst));
+ kvmppc_core_queue_program(vcpu, 0);
}
}
generated by cgit v1.2.3 (git 2.0.4) at 2024-04-27 04:12:08 +0000