On Wed, 2017-12-20 at 09:50 -0800, Ram Pai wrote: > The argument against this patch is -- it should not be baked into > the ABI as yet, since we do not have clarity on what applications need. > > As it stands today the only way to figure out the information from > userspace is by probing the kernel through calls to sys_pkey_alloc(). > > AT_HWCAP can be used, but that will certainly not be capable of > providing all the information that userspace might expect. > > Your thoughts? Well, there's one well known application wanting that whole keys business, so why not ask them what works for them ? In the meantime, that shouldn't block the rest of the patches. Cheers, Ben.