Messages in this thread | | | Date | Fri, 25 Feb 2022 15:36:54 +0100 | From | Greg KH <> | Subject | Re: [PATCH v4] virt: vmgenid: introduce driver for reinitializing RNG on VM fork |
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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
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