On Tue, Apr 26, 2022 at 11:18 AM Dave Hansen <dave.hansen@xxxxxxxxx> wrote: > > On 4/26/22 11:02, Jue Wang wrote: > >>> Are there any other physical addresses which are RAM but should not have > >>> the detector used on them? > > In theory, if some physical address range are never / very rarely > > accessed, they can be exempted. > > How would userspace know to exempt them? User space won't know, if kernel has this knowledge, I suppose an appropriate error code can be returned to inform user space this address region should be exempted from future scanning? >
