1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 #ifndef __KVM_MM_H__ 4 #define __KVM_MM_H__ 1 5 6 /* 7 * Architectures can choose whether to use an rwlock or spinlock 8 * for the mmu_lock. These macros, for use in common code 9 * only, avoids using #ifdefs in places that must deal with 10 * multiple architectures. 11 */ 12 13 #ifdef KVM_HAVE_MMU_RWLOCK 14 #define KVM_MMU_LOCK_INIT(kvm) rwlock_init(&(kvm)->mmu_lock) 15 #define KVM_MMU_LOCK(kvm) write_lock(&(kvm)->mmu_lock) 16 #define KVM_MMU_UNLOCK(kvm) write_unlock(&(kvm)->mmu_lock) 17 #else 18 #define KVM_MMU_LOCK_INIT(kvm) spin_lock_init(&(kvm)->mmu_lock) 19 #define KVM_MMU_LOCK(kvm) spin_lock(&(kvm)->mmu_lock) 20 #define KVM_MMU_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock) 21 #endif /* KVM_HAVE_MMU_RWLOCK */ 22 23 kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool interruptible, 24 bool *async, bool write_fault, bool *writable); 25 26 #ifdef CONFIG_HAVE_KVM_PFNCACHE 27 void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, 28 unsigned long start, 29 unsigned long end); 30 #else 31 static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm, 32 unsigned long start, 33 unsigned long end) 34 { 35 } 36 #endif /* HAVE_KVM_PFNCACHE */ 37 38 #ifdef CONFIG_KVM_PRIVATE_MEM 39 void kvm_gmem_init(struct module *module); 40 int kvm_gmem_create(struct kvm *kvm, struct kvm_create_guest_memfd *args); 41 int kvm_gmem_bind(struct kvm *kvm, struct kvm_memory_slot *slot, 42 unsigned int fd, loff_t offset); 43 void kvm_gmem_unbind(struct kvm_memory_slot *slot); 44 #else 45 static inline void kvm_gmem_init(struct module *module) 46 { 47 48 } 49 50 static inline int kvm_gmem_bind(struct kvm *kvm, 51 struct kvm_memory_slot *slot, 52 unsigned int fd, loff_t offset) 53 { 54 WARN_ON_ONCE(1); 55 return -EIO; 56 } 57 58 static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot) 59 { 60 WARN_ON_ONCE(1); 61 } 62 #endif /* CONFIG_KVM_PRIVATE_MEM */ 63 64 #endif /* __KVM_MM_H__ */ 65