diff options
Diffstat (limited to 'arch/powerpc/kvm/booke.c')
-rw-r--r-- | arch/powerpc/kvm/booke.c | 108 |
1 files changed, 78 insertions, 30 deletions
diff --git a/arch/powerpc/kvm/booke.c b/arch/powerpc/kvm/booke.c index 8d4e35f..77575d0 100644 --- a/arch/powerpc/kvm/booke.c +++ b/arch/powerpc/kvm/booke.c @@ -62,9 +62,10 @@ void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu) { int i; - printk("pc: %08lx msr: %08lx\n", vcpu->arch.pc, vcpu->arch.msr); + printk("pc: %08lx msr: %08llx\n", vcpu->arch.pc, vcpu->arch.shared->msr); printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr); - printk("srr0: %08lx srr1: %08lx\n", vcpu->arch.srr0, vcpu->arch.srr1); + printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0, + vcpu->arch.shared->srr1); printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions); @@ -130,13 +131,19 @@ void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu) void kvmppc_core_queue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { - kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_EXTERNAL); + unsigned int prio = BOOKE_IRQPRIO_EXTERNAL; + + if (irq->irq == KVM_INTERRUPT_SET_LEVEL) + prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL; + + kvmppc_booke_queue_irqprio(vcpu, prio); } void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) { clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions); + clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions); } /* Deliver the interrupt of the corresponding priority, if possible. */ @@ -146,6 +153,26 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, int allowed = 0; ulong uninitialized_var(msr_mask); bool update_esr = false, update_dear = false; + ulong crit_raw = vcpu->arch.shared->critical; + ulong crit_r1 = kvmppc_get_gpr(vcpu, 1); + bool crit; + bool keep_irq = false; + + /* Truncate crit indicators in 32 bit mode */ + if (!(vcpu->arch.shared->msr & MSR_SF)) { + crit_raw &= 0xffffffff; + crit_r1 &= 0xffffffff; + } + + /* Critical section when crit == r1 */ + crit = (crit_raw == crit_r1); + /* ... and we're in supervisor mode */ + crit = crit && !(vcpu->arch.shared->msr & MSR_PR); + + if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) { + priority = BOOKE_IRQPRIO_EXTERNAL; + keep_irq = true; + } switch (priority) { case BOOKE_IRQPRIO_DTLB_MISS: @@ -169,36 +196,38 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, break; case BOOKE_IRQPRIO_CRITICAL: case BOOKE_IRQPRIO_WATCHDOG: - allowed = vcpu->arch.msr & MSR_CE; + allowed = vcpu->arch.shared->msr & MSR_CE; msr_mask = MSR_ME; break; case BOOKE_IRQPRIO_MACHINE_CHECK: - allowed = vcpu->arch.msr & MSR_ME; + allowed = vcpu->arch.shared->msr & MSR_ME; msr_mask = 0; break; case BOOKE_IRQPRIO_EXTERNAL: case BOOKE_IRQPRIO_DECREMENTER: case BOOKE_IRQPRIO_FIT: - allowed = vcpu->arch.msr & MSR_EE; + allowed = vcpu->arch.shared->msr & MSR_EE; + allowed = allowed && !crit; msr_mask = MSR_CE|MSR_ME|MSR_DE; break; case BOOKE_IRQPRIO_DEBUG: - allowed = vcpu->arch.msr & MSR_DE; + allowed = vcpu->arch.shared->msr & MSR_DE; msr_mask = MSR_ME; break; } if (allowed) { - vcpu->arch.srr0 = vcpu->arch.pc; - vcpu->arch.srr1 = vcpu->arch.msr; + vcpu->arch.shared->srr0 = vcpu->arch.pc; + vcpu->arch.shared->srr1 = vcpu->arch.shared->msr; vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority]; if (update_esr == true) vcpu->arch.esr = vcpu->arch.queued_esr; if (update_dear == true) - vcpu->arch.dear = vcpu->arch.queued_dear; - kvmppc_set_msr(vcpu, vcpu->arch.msr & msr_mask); + vcpu->arch.shared->dar = vcpu->arch.queued_dear; + kvmppc_set_msr(vcpu, vcpu->arch.shared->msr & msr_mask); - clear_bit(priority, &vcpu->arch.pending_exceptions); + if (!keep_irq) + clear_bit(priority, &vcpu->arch.pending_exceptions); } return allowed; @@ -208,6 +237,7 @@ static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu, void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) { unsigned long *pending = &vcpu->arch.pending_exceptions; + unsigned long old_pending = vcpu->arch.pending_exceptions; unsigned int priority; priority = __ffs(*pending); @@ -219,6 +249,12 @@ void kvmppc_core_deliver_interrupts(struct kvm_vcpu *vcpu) BITS_PER_BYTE * sizeof(*pending), priority + 1); } + + /* Tell the guest about our interrupt status */ + if (*pending) + vcpu->arch.shared->int_pending = 1; + else if (old_pending) + vcpu->arch.shared->int_pending = 0; } /** @@ -265,7 +301,7 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, break; case BOOKE_INTERRUPT_PROGRAM: - if (vcpu->arch.msr & MSR_PR) { + if (vcpu->arch.shared->msr & MSR_PR) { /* Program traps generated by user-level software must be handled * by the guest kernel. */ kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr); @@ -337,7 +373,15 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, break; case BOOKE_INTERRUPT_SYSCALL: - kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL); + if (!(vcpu->arch.shared->msr & MSR_PR) && + (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) { + /* KVM PV hypercalls */ + kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu)); + r = RESUME_GUEST; + } else { + /* Guest syscalls */ + kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL); + } kvmppc_account_exit(vcpu, SYSCALL_EXITS); r = RESUME_GUEST; break; @@ -466,15 +510,19 @@ int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu) { + int i; + vcpu->arch.pc = 0; - vcpu->arch.msr = 0; + vcpu->arch.shared->msr = 0; kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */ vcpu->arch.shadow_pid = 1; - /* Eye-catching number so we know if the guest takes an interrupt - * before it's programmed its own IVPR. */ + /* Eye-catching numbers so we know if the guest takes an interrupt + * before it's programmed its own IVPR/IVORs. */ vcpu->arch.ivpr = 0x55550000; + for (i = 0; i < BOOKE_IRQPRIO_MAX; i++) + vcpu->arch.ivor[i] = 0x7700 | i * 4; kvmppc_init_timing_stats(vcpu); @@ -490,14 +538,14 @@ int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) regs->ctr = vcpu->arch.ctr; regs->lr = vcpu->arch.lr; regs->xer = kvmppc_get_xer(vcpu); - regs->msr = vcpu->arch.msr; - regs->srr0 = vcpu->arch.srr0; - regs->srr1 = vcpu->arch.srr1; + regs->msr = vcpu->arch.shared->msr; + regs->srr0 = vcpu->arch.shared->srr0; + regs->srr1 = vcpu->arch.shared->srr1; regs->pid = vcpu->arch.pid; - regs->sprg0 = vcpu->arch.sprg0; - regs->sprg1 = vcpu->arch.sprg1; - regs->sprg2 = vcpu->arch.sprg2; - regs->sprg3 = vcpu->arch.sprg3; + regs->sprg0 = vcpu->arch.shared->sprg0; + regs->sprg1 = vcpu->arch.shared->sprg1; + regs->sprg2 = vcpu->arch.shared->sprg2; + regs->sprg3 = vcpu->arch.shared->sprg3; regs->sprg5 = vcpu->arch.sprg4; regs->sprg6 = vcpu->arch.sprg5; regs->sprg7 = vcpu->arch.sprg6; @@ -518,12 +566,12 @@ int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs) vcpu->arch.lr = regs->lr; kvmppc_set_xer(vcpu, regs->xer); kvmppc_set_msr(vcpu, regs->msr); - vcpu->arch.srr0 = regs->srr0; - vcpu->arch.srr1 = regs->srr1; - vcpu->arch.sprg0 = regs->sprg0; - vcpu->arch.sprg1 = regs->sprg1; - vcpu->arch.sprg2 = regs->sprg2; - vcpu->arch.sprg3 = regs->sprg3; + vcpu->arch.shared->srr0 = regs->srr0; + vcpu->arch.shared->srr1 = regs->srr1; + vcpu->arch.shared->sprg0 = regs->sprg0; + vcpu->arch.shared->sprg1 = regs->sprg1; + vcpu->arch.shared->sprg2 = regs->sprg2; + vcpu->arch.shared->sprg3 = regs->sprg3; vcpu->arch.sprg5 = regs->sprg4; vcpu->arch.sprg6 = regs->sprg5; vcpu->arch.sprg7 = regs->sprg6; |