KVM: remove vm mmap method

It was used in conjunction with KVM_SET_MEMORY_REGION ioctl which was
removed by b74a07beed0 in 2010, QEMU stopped using it in 2008, so
it is time to remove the code finally.

Signed-off-by: Gleb Natapov <gleb@redhat.com>
(cherry picked from commit 80f5b5e700fa9c58480eafce0d47367bafb70006)
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>

diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 652d682b1d5531e912daa46c9cd1dccedbf5ac0b..dd9ce144cf99189730625e76672433eaf89c7c77 100644 (file)
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -2524,44 +2524,12 @@ out:
 }
 #endif
 
-static int kvm_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
-{
-       struct page *page[1];
-       unsigned long addr;
-       int npages;
-       gfn_t gfn = vmf->pgoff;
-       struct kvm *kvm = vma->vm_file->private_data;
-
-       addr = gfn_to_hva(kvm, gfn);
-       if (kvm_is_error_hva(addr))
-               return VM_FAULT_SIGBUS;
-
-       npages = get_user_pages(current, current->mm, addr, 1, 1, 0, page,
-                               NULL);
-       if (unlikely(npages != 1))
-               return VM_FAULT_SIGBUS;
-
-       vmf->page = page[0];
-       return 0;
-}
-
-static const struct vm_operations_struct kvm_vm_vm_ops = {
-       .fault = kvm_vm_fault,
-};
-
-static int kvm_vm_mmap(struct file *file, struct vm_area_struct *vma)
-{
-       vma->vm_ops = &kvm_vm_vm_ops;
-       return 0;
-}
-
 static struct file_operations kvm_vm_fops = {
        .release        = kvm_vm_release,
        .unlocked_ioctl = kvm_vm_ioctl,
 #ifdef CONFIG_COMPAT
        .compat_ioctl   = kvm_vm_compat_ioctl,
 #endif
-       .mmap           = kvm_vm_mmap,
        .llseek         = noop_llseek,
 };