Messages in this thread |  | | Subject | Re: [PATCH v9 29/51] mm/mprotect, powerpc/mm/pkeys, x86/mm/pkeys: Add sysfs interface | From | Benjamin Herrenschmidt <> | Date | Thu, 21 Dec 2017 09:49:13 +1100 |
| |
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.
|  |