Ben Gardon | 531810c | 2021-02-02 10:57:24 -0800 | [diff] [blame] | 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 |