1// SPDX-License-Identifier: GPL-2.0-only
 2
 3#ifndef KVM_MMU_LOCK_H
 4#define KVM_MMU_LOCK_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#endif