mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-11 04:18:39 +08:00
eefb85b3f0
Remove gfn_to_pfn_cache_invalidate_start()'s unused @may_block parameter,
which was leftover from KVM's abandoned (for now) attempt to support guest
usage of gfn_to_pfn caches.
Fixes: a4bff3df51 ("KVM: pfncache: remove KVM_GUEST_USES_PFN usage")
Reported-by: Like Xu <like.xu.linux@gmail.com>
Cc: Paul Durrant <paul@xen.org>
Cc: David Woodhouse <dwmw2@infradead.org>
Reviewed-by: Paul Durrant <paul@xen.org>
Reviewed-by: David Woodhouse <dwmw@amazon.co.uk>
Link: https://lore.kernel.org/r/20240305003742.245767-1-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
65 lines
1.8 KiB
C
65 lines
1.8 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)
|
|
#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)
|
|
#endif /* KVM_HAVE_MMU_RWLOCK */
|
|
|
|
kvm_pfn_t hva_to_pfn(unsigned long addr, bool atomic, bool interruptible,
|
|
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);
|
|
#else
|
|
static inline void gfn_to_pfn_cache_invalidate_start(struct kvm *kvm,
|
|
unsigned long start,
|
|
unsigned long end)
|
|
{
|
|
}
|
|
#endif /* HAVE_KVM_PFNCACHE */
|
|
|
|
#ifdef CONFIG_KVM_PRIVATE_MEM
|
|
void kvm_gmem_init(struct module *module);
|
|
int kvm_gmem_create(struct kvm *kvm, struct kvm_create_guest_memfd *args);
|
|
int kvm_gmem_bind(struct kvm *kvm, struct kvm_memory_slot *slot,
|
|
unsigned int fd, loff_t offset);
|
|
void kvm_gmem_unbind(struct kvm_memory_slot *slot);
|
|
#else
|
|
static inline void kvm_gmem_init(struct module *module)
|
|
{
|
|
|
|
}
|
|
|
|
static inline int kvm_gmem_bind(struct kvm *kvm,
|
|
struct kvm_memory_slot *slot,
|
|
unsigned int fd, loff_t offset)
|
|
{
|
|
WARN_ON_ONCE(1);
|
|
return -EIO;
|
|
}
|
|
|
|
static inline void kvm_gmem_unbind(struct kvm_memory_slot *slot)
|
|
{
|
|
WARN_ON_ONCE(1);
|
|
}
|
|
#endif /* CONFIG_KVM_PRIVATE_MEM */
|
|
|
|
#endif /* __KVM_MM_H__ */
|