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-rw-r--r--include/linux/kvm_host.h140
1 files changed, 54 insertions, 86 deletions
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a4c33b34fe3f..26f106022c88 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -43,6 +43,7 @@
* include/linux/kvm_h.
*/
#define KVM_MEMSLOT_INVALID (1UL << 16)
+#define KVM_MEMSLOT_INCOHERENT (1UL << 17)
/* Two fragments for cross MMIO pages. */
#define KVM_MAX_MMIO_FRAGMENTS 2
@@ -136,12 +137,11 @@ static inline bool is_error_page(struct page *page)
#define KVM_REQ_GLOBAL_CLOCK_UPDATE 22
#define KVM_REQ_ENABLE_IBS 23
#define KVM_REQ_DISABLE_IBS 24
+#define KVM_REQ_APIC_PAGE_RELOAD 25
#define KVM_USERSPACE_IRQ_SOURCE_ID 0
#define KVM_IRQFD_RESAMPLE_IRQ_SOURCE_ID 1
-struct kvm;
-struct kvm_vcpu;
extern struct kmem_cache *kvm_vcpu_cache;
extern spinlock_t kvm_lock;
@@ -200,6 +200,17 @@ int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, unsigned long hva,
int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
#endif
+/*
+ * Carry out a gup that requires IO. Allow the mm to relinquish the mmap
+ * semaphore if the filemap/swap has to wait on a page lock. pagep == NULL
+ * controls whether we retry the gup one more time to completion in that case.
+ * Typically this is called after a FAULT_FLAG_RETRY_NOWAIT in the main tdp
+ * handler.
+ */
+int kvm_get_user_page_io(struct task_struct *tsk, struct mm_struct *mm,
+ unsigned long addr, bool write_fault,
+ struct page **pagep);
+
enum {
OUTSIDE_GUEST_MODE,
IN_GUEST_MODE,
@@ -325,8 +336,6 @@ struct kvm_kernel_irq_routing_entry {
struct hlist_node link;
};
-struct kvm_irq_routing_table;
-
#ifndef KVM_PRIVATE_MEM_SLOTS
#define KVM_PRIVATE_MEM_SLOTS 0
#endif
@@ -345,6 +354,8 @@ struct kvm_memslots {
struct kvm_memory_slot memslots[KVM_MEM_SLOTS_NUM];
/* The mapping table from slot id to the index in memslots[]. */
short id_to_index[KVM_MEM_SLOTS_NUM];
+ atomic_t lru_slot;
+ int used_slots;
};
struct kvm {
@@ -387,7 +398,6 @@ struct kvm {
* Update side is protected by irq_lock.
*/
struct kvm_irq_routing_table __rcu *irq_routing;
- struct hlist_head mask_notifier_list;
#endif
#ifdef CONFIG_HAVE_KVM_IRQFD
struct hlist_head irq_ack_notifier_list;
@@ -439,6 +449,14 @@ void kvm_vcpu_uninit(struct kvm_vcpu *vcpu);
int __must_check vcpu_load(struct kvm_vcpu *vcpu);
void vcpu_put(struct kvm_vcpu *vcpu);
+#ifdef __KVM_HAVE_IOAPIC
+void kvm_vcpu_request_scan_ioapic(struct kvm *kvm);
+#else
+static inline void kvm_vcpu_request_scan_ioapic(struct kvm *kvm)
+{
+}
+#endif
+
#ifdef CONFIG_HAVE_KVM_IRQFD
int kvm_irqfd_init(void);
void kvm_irqfd_exit(void);
@@ -528,6 +546,8 @@ struct page *gfn_to_page(struct kvm *kvm, gfn_t gfn);
unsigned long gfn_to_hva(struct kvm *kvm, gfn_t gfn);
unsigned long gfn_to_hva_prot(struct kvm *kvm, gfn_t gfn, bool *writable);
unsigned long gfn_to_hva_memslot(struct kvm_memory_slot *slot, gfn_t gfn);
+unsigned long gfn_to_hva_memslot_prot(struct kvm_memory_slot *slot, gfn_t gfn,
+ bool *writable);
void kvm_release_page_clean(struct page *page);
void kvm_release_page_dirty(struct page *page);
void kvm_set_page_accessed(struct page *page);
@@ -579,6 +599,7 @@ void kvm_flush_remote_tlbs(struct kvm *kvm);
void kvm_reload_remote_mmus(struct kvm *kvm);
void kvm_make_mclock_inprogress_request(struct kvm *kvm);
void kvm_make_scan_ioapic_request(struct kvm *kvm);
+bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
long kvm_arch_dev_ioctl(struct file *filp,
unsigned int ioctl, unsigned long arg);
@@ -624,6 +645,8 @@ void kvm_arch_exit(void);
int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu);
+void kvm_arch_sched_in(struct kvm_vcpu *vcpu, int cpu);
+
void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu);
void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu);
@@ -632,8 +655,8 @@ int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu);
int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu);
void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu);
-int kvm_arch_hardware_enable(void *garbage);
-void kvm_arch_hardware_disable(void *garbage);
+int kvm_arch_hardware_enable(void);
+void kvm_arch_hardware_disable(void);
int kvm_arch_hardware_setup(void);
void kvm_arch_hardware_unsetup(void);
void kvm_arch_check_processor_compat(void *rtn);
@@ -690,7 +713,7 @@ void kvm_arch_sync_events(struct kvm *kvm);
int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu);
void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
-bool kvm_is_mmio_pfn(pfn_t pfn);
+bool kvm_is_reserved_pfn(pfn_t pfn);
struct kvm_irq_ack_notifier {
struct hlist_node link;
@@ -698,44 +721,6 @@ struct kvm_irq_ack_notifier {
void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
};
-struct kvm_assigned_dev_kernel {
- struct kvm_irq_ack_notifier ack_notifier;
- struct list_head list;
- int assigned_dev_id;
- int host_segnr;
- int host_busnr;
- int host_devfn;
- unsigned int entries_nr;
- int host_irq;
- bool host_irq_disabled;
- bool pci_2_3;
- struct msix_entry *host_msix_entries;
- int guest_irq;
- struct msix_entry *guest_msix_entries;
- unsigned long irq_requested_type;
- int irq_source_id;
- int flags;
- struct pci_dev *dev;
- struct kvm *kvm;
- spinlock_t intx_lock;
- spinlock_t intx_mask_lock;
- char irq_name[32];
- struct pci_saved_state *pci_saved_state;
-};
-
-struct kvm_irq_mask_notifier {
- void (*func)(struct kvm_irq_mask_notifier *kimn, bool masked);
- int irq;
- struct hlist_node link;
-};
-
-void kvm_register_irq_mask_notifier(struct kvm *kvm, int irq,
- struct kvm_irq_mask_notifier *kimn);
-void kvm_unregister_irq_mask_notifier(struct kvm *kvm, int irq,
- struct kvm_irq_mask_notifier *kimn);
-void kvm_fire_mask_notifiers(struct kvm *kvm, unsigned irqchip, unsigned pin,
- bool mask);
-
int kvm_irq_map_gsi(struct kvm *kvm,
struct kvm_kernel_irq_routing_entry *entries, int gsi);
int kvm_irq_map_chip_pin(struct kvm *kvm, unsigned irqchip, unsigned pin);
@@ -757,12 +742,6 @@ void kvm_free_irq_source_id(struct kvm *kvm, int irq_source_id);
#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);
-int kvm_iommu_unmap_guest(struct kvm *kvm);
-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
static inline int kvm_iommu_map_pages(struct kvm *kvm,
struct kvm_memory_slot *slot)
@@ -774,11 +753,6 @@ static inline void kvm_iommu_unmap_pages(struct kvm *kvm,
struct kvm_memory_slot *slot)
{
}
-
-static inline int kvm_iommu_unmap_guest(struct kvm *kvm)
-{
- return 0;
-}
#endif
static inline void kvm_guest_enter(void)
@@ -819,12 +793,28 @@ static inline void kvm_guest_exit(void)
static inline struct kvm_memory_slot *
search_memslots(struct kvm_memslots *slots, gfn_t gfn)
{
- struct kvm_memory_slot *memslot;
+ int start = 0, end = slots->used_slots;
+ int slot = atomic_read(&slots->lru_slot);
+ struct kvm_memory_slot *memslots = slots->memslots;
+
+ if (gfn >= memslots[slot].base_gfn &&
+ gfn < memslots[slot].base_gfn + memslots[slot].npages)
+ return &memslots[slot];
+
+ while (start < end) {
+ slot = start + (end - start) / 2;
+
+ if (gfn >= memslots[slot].base_gfn)
+ end = slot;
+ else
+ start = slot + 1;
+ }
- kvm_for_each_memslot(memslot, slots)
- if (gfn >= memslot->base_gfn &&
- gfn < memslot->base_gfn + memslot->npages)
- return memslot;
+ if (gfn >= memslots[start].base_gfn &&
+ gfn < memslots[start].base_gfn + memslots[start].npages) {
+ atomic_set(&slots->lru_slot, start);
+ return &memslots[start];
+ }
return NULL;
}
@@ -998,25 +988,6 @@ static inline bool kvm_vcpu_compatible(struct kvm_vcpu *vcpu) { return true; }
#endif
-#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,
- unsigned long arg)
-{
- 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)
{
set_bit(req, &vcpu->requests);
@@ -1034,8 +1005,6 @@ static inline bool kvm_check_request(int req, struct kvm_vcpu *vcpu)
extern bool kvm_rebooting;
-struct kvm_device_ops;
-
struct kvm_device {
struct kvm_device_ops *ops;
struct kvm *kvm;
@@ -1068,12 +1037,11 @@ struct kvm_device_ops {
void kvm_device_get(struct kvm_device *dev);
void kvm_device_put(struct kvm_device *dev);
struct kvm_device *kvm_device_from_filp(struct file *filp);
+int kvm_register_device_ops(struct kvm_device_ops *ops, u32 type);
+void kvm_unregister_device_ops(u32 type);
extern struct kvm_device_ops kvm_mpic_ops;
extern struct kvm_device_ops kvm_xics_ops;
-extern struct kvm_device_ops kvm_vfio_ops;
-extern struct kvm_device_ops kvm_arm_vgic_v2_ops;
-extern struct kvm_device_ops kvm_flic_ops;
#ifdef CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT
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