diff options
| -rw-r--r-- | arch/x86/kvm/i8254.c | 14 | ||||
| -rw-r--r-- | arch/x86/kvm/i8254.h | 2 | ||||
| -rw-r--r-- | arch/x86/kvm/x86.c | 12 | ||||
| -rw-r--r-- | include/linux/kvm.h | 12 |
4 files changed, 32 insertions, 8 deletions
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 21f68e00524f..0990bc9aac1f 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -563,7 +563,7 @@ static void pit_mask_notifer(struct kvm_irq_mask_notifier *kimn, bool mask) } } -struct kvm_pit *kvm_create_pit(struct kvm *kvm) +struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags) { struct kvm_pit *pit; struct kvm_kpit_state *pit_state; @@ -589,11 +589,13 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm) pit->dev.private = pit; kvm_io_bus_register_dev(&kvm->pio_bus, &pit->dev); - pit->speaker_dev.read = speaker_ioport_read; - pit->speaker_dev.write = speaker_ioport_write; - pit->speaker_dev.in_range = speaker_in_range; - pit->speaker_dev.private = pit; - kvm_io_bus_register_dev(&kvm->pio_bus, &pit->speaker_dev); + if (flags & KVM_PIT_SPEAKER_DUMMY) { + pit->speaker_dev.read = speaker_ioport_read; + pit->speaker_dev.write = speaker_ioport_write; + pit->speaker_dev.in_range = speaker_in_range; + pit->speaker_dev.private = pit; + kvm_io_bus_register_dev(&kvm->pio_bus, &pit->speaker_dev); + } kvm->arch.vpit = pit; pit->kvm = kvm; diff --git a/arch/x86/kvm/i8254.h b/arch/x86/kvm/i8254.h index bbd863ff60b7..b2670180f225 100644 --- a/arch/x86/kvm/i8254.h +++ b/arch/x86/kvm/i8254.h @@ -50,7 +50,7 @@ struct kvm_pit { void kvm_inject_pit_timer_irqs(struct kvm_vcpu *vcpu); void kvm_pit_load_count(struct kvm *kvm, int channel, u32 val); -struct kvm_pit *kvm_create_pit(struct kvm *kvm); +struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags); void kvm_free_pit(struct kvm *kvm); void kvm_pit_reset(struct kvm_pit *pit); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 15f39fc08ece..5eb3b8dd74b8 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -1127,6 +1127,7 @@ int kvm_dev_ioctl_check_extension(long ext) case KVM_CAP_IRQ_INJECT_STATUS: case KVM_CAP_ASSIGN_DEV_IRQ: case KVM_CAP_IRQFD: + case KVM_CAP_PIT2: r = 1; break; case KVM_CAP_COALESCED_MMIO: @@ -2038,6 +2039,7 @@ long kvm_arch_vm_ioctl(struct file *filp, union { struct kvm_pit_state ps; struct kvm_memory_alias alias; + struct kvm_pit_config pit_config; } u; switch (ioctl) { @@ -2098,12 +2100,20 @@ long kvm_arch_vm_ioctl(struct file *filp, } break; case KVM_CREATE_PIT: + u.pit_config.flags = KVM_PIT_SPEAKER_DUMMY; + goto create_pit; + case KVM_CREATE_PIT2: + r = -EFAULT; + if (copy_from_user(&u.pit_config, argp, + sizeof(struct kvm_pit_config))) + goto out; + create_pit: mutex_lock(&kvm->lock); r = -EEXIST; if (kvm->arch.vpit) goto create_pit_unlock; r = -ENOMEM; - kvm->arch.vpit = kvm_create_pit(kvm); + kvm->arch.vpit = kvm_create_pit(kvm, u.pit_config.flags); if (kvm->arch.vpit) r = 0; create_pit_unlock: diff --git a/include/linux/kvm.h b/include/linux/kvm.h index 8f53f24e5274..65df6f5e2b98 100644 --- a/include/linux/kvm.h +++ b/include/linux/kvm.h @@ -70,6 +70,14 @@ struct kvm_irqchip { } chip; }; +/* for KVM_CREATE_PIT2 */ +struct kvm_pit_config { + __u32 flags; + __u32 pad[15]; +}; + +#define KVM_PIT_SPEAKER_DUMMY 1 + #define KVM_EXIT_UNKNOWN 0 #define KVM_EXIT_EXCEPTION 1 #define KVM_EXIT_IO 2 @@ -419,6 +427,9 @@ struct kvm_trace_rec { #define KVM_CAP_MCE 31 #endif #define KVM_CAP_IRQFD 32 +#ifdef __KVM_HAVE_PIT +#define KVM_CAP_PIT2 33 +#endif #ifdef KVM_CAP_IRQ_ROUTING @@ -525,6 +536,7 @@ struct kvm_irqfd { _IOW(KVMIO, 0x74, struct kvm_assigned_msix_entry) #define KVM_DEASSIGN_DEV_IRQ _IOW(KVMIO, 0x75, struct kvm_assigned_irq) #define KVM_IRQFD _IOW(KVMIO, 0x76, struct kvm_irqfd) +#define KVM_CREATE_PIT2 _IOW(KVMIO, 0x77, struct kvm_pit_config) /* * ioctls for vcpu fds |