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 | |