diff options
| -rw-r--r-- | virt/kvm/guest_memfd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/virt/kvm/guest_memfd.c b/virt/kvm/guest_memfd.c index 3e4273f60a8c..3fa4969b38f9 100644 --- a/virt/kvm/guest_memfd.c +++ b/virt/kvm/guest_memfd.c @@ -60,6 +60,16 @@ static pgoff_t kvm_gmem_get_index(struct kvm_memory_slot *slot, gfn_t gfn) return gfn - slot->base_gfn + slot->gmem.pgoff; } +static bool kvm_gmem_is_private_mem(struct inode *inode, pgoff_t index) +{ + return !(GMEM_I(inode)->flags & GUEST_MEMFD_FLAG_INIT_SHARED); +} + +static bool kvm_gmem_is_shared_mem(struct inode *inode, pgoff_t index) +{ + return !kvm_gmem_is_private_mem(inode, index); +} + static int __kvm_gmem_prepare_folio(struct kvm *kvm, struct kvm_memory_slot *slot, pgoff_t index, struct folio *folio) { @@ -397,7 +407,7 @@ static vm_fault_t kvm_gmem_fault_user_mapping(struct vm_fault *vmf) if (((loff_t)vmf->pgoff << PAGE_SHIFT) >= i_size_read(inode)) return VM_FAULT_SIGBUS; - if (!(GMEM_I(inode)->flags & GUEST_MEMFD_FLAG_INIT_SHARED)) + if (!kvm_gmem_is_shared_mem(inode, vmf->pgoff)) return VM_FAULT_SIGBUS; folio = kvm_gmem_get_folio(inode, vmf->pgoff); |