On Fri, Feb 25, 2022 at 02:57:38PM +0100, Alexander Graf wrote:
> > +
> > + phys_addr = (obj->package.elements[0].integer.value << 0) |
> > + (obj->package.elements[1].integer.value << 32);
> > + state->next_id = devm_memremap(&device->dev, phys_addr, VMGENID_SIZE, MEMREMAP_WB);
> > + if (!state->next_id) {
> > + ret = -ENOMEM;
> > + goto out;
> > + }
> > +
> > + memcpy(state->this_id, state->next_id, sizeof(state->this_id));
> > + add_device_randomness(state->this_id, sizeof(state->this_id));
>
>
> Please expose the vmgenid via /sysfs so that user space even remotely has a
> chance to check if it's been cloned.
Export it how? And why, who would care?
thanks,
greg k-h
