45 lines
1.5 KiB
C
45 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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#ifndef __KVM_MM_H__
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#define __KVM_MM_H__ 1
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/*
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* Architectures can choose whether to use an rwlock or spinlock
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* for the mmu_lock. These macros, for use in common code
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* only, avoids using #ifdefs in places that must deal with
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* multiple architectures.
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*/
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#ifdef KVM_HAVE_MMU_RWLOCK
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#define KVM_MMU_LOCK_INIT(kvm) rwlock_init(&(kvm)->mmu_lock)
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#define KVM_MMU_LOCK(kvm) write_lock(&(kvm)->mmu_lock)
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#define KVM_MMU_UNLOCK(kvm) write_unlock(&(kvm)->mmu_lock)
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#define KVM_MMU_READ_LOCK(kvm) read_lock(&(kvm)->mmu_lock)
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#define KVM_MMU_READ_UNLOCK(kvm) read_unlock(&(kvm)->mmu_lock)
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#else
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#define KVM_MMU_LOCK_INIT(kvm) spin_lock_init(&(kvm)->mmu_lock)
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#define KVM_MMU_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
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#define KVM_MMU_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
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#define KVM_MMU_READ_LOCK(kvm) spin_lock(&(kvm)->mmu_lock)
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#define KVM_MMU_READ_UNLOCK(kvm) spin_unlock(&(kvm)->mmu_lock)
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#endif /* KVM_HAVE_MMU_RWLOCK */
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kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool *async,
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bool write_fault, bool *writable);
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#ifdef CONFIG_HAVE_KVM_PFNCACHE
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void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
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unsigned long start,
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unsigned long end,
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bool may_block);
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#else
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static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
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unsigned long start,
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unsigned long end,
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bool may_block)
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{
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}
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#endif /* HAVE_KVM_PFNCACHE */
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#endif /* __KVM_MM_H__ */
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