linux/virt/kvm/kvm_mm.h
Tom Rix a413a625b4 KVM: SPDX style and spelling fixes
SPDX comments use use /* */ style comments in headers anad
// style comments in .c files.  Also fix two spelling mistakes.

Signed-off-by: Tom Rix <trix@redhat.com>
Message-Id: <20220410153840.55506-1-trix@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-04-21 13:16:13 -04:00

45 lines
1.5 KiB
C

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