x86/kvm: Introduce kvm_(un)map_gfn()

[linux.git] / include / linux / kvm_host.h

diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a0f4c0f9cf3b5bad90b561b24811427905105ecd..0cb78f55b92c938280aee67cb4f6c930c2f61d83 100644 (file)
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -149,7 +149,7 @@ static inline bool is_error_page(struct page *page)
 #define KVM_REQUEST_ARCH_BASE     8
 
 #define KVM_ARCH_REQ_FLAGS(nr, flags) ({ \
-       BUILD_BUG_ON((unsigned)(nr) >= (FIELD_SIZEOF(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
+       BUILD_BUG_ON((unsigned)(nr) >= (sizeof_field(struct kvm_vcpu, requests) * 8) - KVM_REQUEST_ARCH_BASE); \
        (unsigned)(((nr) + KVM_REQUEST_ARCH_BASE) | (flags)); \
 })
 #define KVM_ARCH_REQ(nr)           KVM_ARCH_REQ_FLAGS(nr, 0)
@@ -266,7 +266,8 @@ struct kvm_vcpu {
        struct preempt_notifier preempt_notifier;
 #endif
        int cpu;
-       int vcpu_id;
+       int vcpu_id; /* id given by userspace at creation */
+       int vcpu_idx; /* index in kvm->vcpus array */
        int srcu_idx;
        int mode;
        u64 requests;
@@ -278,7 +279,6 @@ struct kvm_vcpu {
        struct mutex mutex;
        struct kvm_run *run;
 
-       int guest_xcr0_loaded;
        struct swait_queue_head wq;
        struct pid __rcu *pid;
        int sigset_active;
@@ -571,13 +571,7 @@ static inline struct kvm_vcpu *kvm_get_vcpu_by_id(struct kvm *kvm, int id)
 
 static inline int kvm_vcpu_get_idx(struct kvm_vcpu *vcpu)
 {
-       struct kvm_vcpu *tmp;
-       int idx;
-
-       kvm_for_each_vcpu(idx, tmp, vcpu->kvm)
-               if (tmp == vcpu)
-                       return idx;
-       BUG();
+       return vcpu->vcpu_idx;
 }
 
 #define kvm_for_each_memslot(memslot, slots)   \
@@ -622,6 +616,7 @@ void kvm_exit(void);
 
 void kvm_get_kvm(struct kvm *kvm);
 void kvm_put_kvm(struct kvm *kvm);
+void kvm_put_kvm_no_destroy(struct kvm *kvm);
 
 static inline struct kvm_memslots *__kvm_memslots(struct kvm *kvm, int as_id)
 {
@@ -780,8 +775,10 @@ struct kvm_memory_slot *kvm_vcpu_gfn_to_memslot(struct kvm_vcpu *vcpu, gfn_t gfn
 kvm_pfn_t kvm_vcpu_gfn_to_pfn_atomic(struct kvm_vcpu *vcpu, gfn_t gfn);
 kvm_pfn_t kvm_vcpu_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn);
 int kvm_vcpu_map(struct kvm_vcpu *vcpu, gpa_t gpa, struct kvm_host_map *map);
+int kvm_map_gfn(struct kvm_vcpu *vcpu, gfn_t gfn, struct kvm_host_map *map);
 struct page *kvm_vcpu_gfn_to_page(struct kvm_vcpu *vcpu, gfn_t gfn);
 void kvm_vcpu_unmap(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
+int kvm_unmap_gfn(struct kvm_vcpu *vcpu, struct kvm_host_map *map, bool dirty);
 unsigned long kvm_vcpu_gfn_to_hva(struct kvm_vcpu *vcpu, gfn_t gfn);
 unsigned long kvm_vcpu_gfn_to_hva_prot(struct kvm_vcpu *vcpu, gfn_t gfn, bool *writable);
 int kvm_vcpu_read_guest_page(struct kvm_vcpu *vcpu, gfn_t gfn, void *data, int offset,
@@ -813,6 +810,8 @@ void kvm_reload_remote_mmus(struct kvm *kvm);
 bool kvm_make_vcpus_request_mask(struct kvm *kvm, unsigned int req,
                                 unsigned long *vcpu_bitmap, cpumask_var_t tmp);
 bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req);
+bool kvm_make_cpus_request_mask(struct kvm *kvm, unsigned int req,
+                               unsigned long *vcpu_bitmap);
 
 long kvm_arch_dev_ioctl(struct file *filp,
                        unsigned int ioctl, unsigned long arg);