Quoting Abdiel Janulgue (2019-10-07 10:19:20)
> +static vm_fault_t i915_gem_fault_cpu(struct vm_fault *vmf)
> +{
> + struct vm_area_struct *area = vmf->vma;
> + struct i915_mmap_offset *priv = area->vm_private_data;
> + struct drm_i915_gem_object *obj = priv->obj;
> + vm_fault_t vmf_ret;
> + unsigned long size = area->vm_end - area->vm_start;
> + bool write = area->vm_flags & VM_WRITE;
> + int i, ret;
> +
> + /* Sanity check that we allow writing into this object */
> + if (i915_gem_object_is_readonly(obj) && write)
> + return VM_FAULT_SIGBUS;
> +
> + ret = i915_gem_object_pin_pages(obj);
> + if (ret)
> + return i915_error_to_vmf_fault(ret);
> +
> + for (i = 0; i < size >> PAGE_SHIFT; i++) {
int i!
No, no, no.
-Chris
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