On Thu, 2019-08-22 at 11:33 +0000, Ayoun, Serge wrote: > Also replying to Sean. > Sean is right that never mind the value in secsinfo->flags, HW will reset RWX > For TCS pages. > So basically you may not enforce and and could not check those but... The signature depends > On those flags, so if you put a non-zero flag value, eadd will pass but if you > compute the signature according to this non zero value then you will have > a delta between ur signature and HW's signature: einit will fail. > So this is tricky and more a usability issue. > I vote for checking the flag is zeroed. As I responded to Sean that as long as the ioctl does not adjust prot bits I'm cool with any sane solution. What do you think of requiring at minimum RW? Doing that kind of adjusting is just doing fixup's for corrupted data from the user space. /Jarkko
