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 #define KVM_MMU_READ_LOCK(kvm) read_lock(&(kvm)->mmu_lock)
18 #define KVM_MMU_READ_UNLOCK(kvm) read_unlock(&(kvm)->mmu_lock)
19 #else
20 #define KVM_MMU_LOCK_INIT(kvm) spin_lock_init(&(kvm)->mmu_lock)
21 #define KVM_MMU_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
22 #define KVM_MMU_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
23 #define KVM_MMU_READ_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
24 #define KVM_MMU_READ_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
25 #endif /* KVM_HAVE_MMU_RWLOCK */
26
27 kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
28 bool write_fault, bool *writable);
29
30 #ifdef CONFIG_HAVE_KVM_PFNCACHE
31 void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
32 unsigned long start,
33 unsigned long end,
34 bool may_block);
35 #else
gfn_to_pfn_cache_invalidate_start(struct kvm * kvm,unsigned long start,unsigned long end,bool may_block)36 static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
37 unsigned long start,
38 unsigned long end,
39 bool may_block)
40 {
41 }
42 #endif /* HAVE_KVM_PFNCACHE */
43
44 #endif /* __KVM_MM_H__ */
45
