diff options
| author | Alex Williamson <alex.williamson@redhat.com> | 2013-04-16 13:49:18 -0600 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-04-28 12:58:56 +0300 |
| commit | 2a5bab1004729f3302c776e53ee7c895b98bb1ce (patch) | |
| tree | 281519b89e9f766a3d83c6978850e9eb72b3e0df /include | |
| parent | 064d1afaa5a60fc391d0b4b77599fc8f63f99cd3 (diff) | |
kvm: Allow build-time configuration of KVM device assignment
We hope to at some point deprecate KVM legacy device assignment in
favor of VFIO-based assignment. Towards that end, allow legacy
device assignment to be deconfigured.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/kvm_host.h | 30 | ||||
| -rw-r--r-- | include/uapi/linux/kvm.h | 4 |
2 files changed, 8 insertions, 26 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index 309774715897..996661eb8e99 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -667,7 +667,6 @@ static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu) int kvm_arch_init_vm(struct kvm *kvm, unsigned long type); void kvm_arch_destroy_vm(struct kvm *kvm); -void kvm_free_all_assigned_devices(struct kvm *kvm); void kvm_arch_sync_events(struct kvm *kvm); int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu); @@ -736,7 +735,7 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id); /* For vcpu->arch.iommu_flags */ #define KVM_IOMMU_CACHE_COHERENCY 0x1 -#ifdef CONFIG_IOMMU_API +#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot); void kvm_iommu_unmap_pages(struct kvm *kvm, struct kvm_memory_slot *slot); int kvm_iommu_map_guest(struct kvm *kvm); @@ -745,7 +744,7 @@ int kvm_assign_device(struct kvm *kvm, struct kvm_assigned_dev_kernel *assigned_dev); int kvm_deassign_device(struct kvm *kvm, struct kvm_assigned_dev_kernel *assigned_dev); -#else /* CONFIG_IOMMU_API */ +#else static inline int kvm_iommu_map_pages(struct kvm *kvm, struct kvm_memory_slot *slot) { @@ -757,28 +756,11 @@ static inline void kvm_iommu_unmap_pages(struct kvm *kvm, { } -static inline int kvm_iommu_map_guest(struct kvm *kvm) -{ - return -ENODEV; -} - static inline int kvm_iommu_unmap_guest(struct kvm *kvm) { return 0; } - -static inline int kvm_assign_device(struct kvm *kvm, - struct kvm_assigned_dev_kernel *assigned_dev) -{ - return 0; -} - -static inline int kvm_deassign_device(struct kvm *kvm, - struct kvm_assigned_dev_kernel *assigned_dev) -{ - return 0; -} -#endif /* CONFIG_IOMMU_API */ +#endif static inline void __guest_enter(void) { @@ -1032,11 +1014,13 @@ static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; } #endif -#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT +#ifdef CONFIG_KVM_DEVICE_ASSIGNMENT long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, unsigned long arg); +void kvm_free_all_assigned_devices(struct kvm *kvm); + #else static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, @@ -1045,6 +1029,8 @@ static inline long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl, return -ENOTTY; } +static inline void kvm_free_all_assigned_devices(struct kvm *kvm) {} + #endif static inline void kvm_make_request(int req, struct kvm_vcpu *vcpu) diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h index d4005192ad6e..965e5b52dee0 100644 --- a/include/uapi/linux/kvm.h +++ b/include/uapi/linux/kvm.h @@ -561,9 +561,7 @@ struct kvm_ppc_smmu_info { #define KVM_CAP_MP_STATE 14 #define KVM_CAP_COALESCED_MMIO 15 #define KVM_CAP_SYNC_MMU 16 /* Changes to host mmap are reflected in guest */ -#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT #define KVM_CAP_DEVICE_ASSIGNMENT 17 -#endif #define KVM_CAP_IOMMU 18 #ifdef __KVM_HAVE_MSI #define KVM_CAP_DEVICE_MSI 20 @@ -581,9 +579,7 @@ struct kvm_ppc_smmu_info { #endif #define KVM_CAP_IRQ_ROUTING 25 #define KVM_CAP_IRQ_INJECT_STATUS 26 -#ifdef __KVM_HAVE_DEVICE_ASSIGNMENT #define KVM_CAP_DEVICE_DEASSIGNMENT 27 -#endif #ifdef __KVM_HAVE_MSIX #define KVM_CAP_DEVICE_MSIX 28 #endif |