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
23kvm_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
27void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
28				       unsigned long start,
29				       unsigned long end,
30				       bool may_block);
31#else
32static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
33						     unsigned long start,
34						     unsigned long end,
35						     bool may_block)
36{
37}
38#endif /* HAVE_KVM_PFNCACHE */
39
40#endif /* __KVM_MM_H__ */