On Fri, 2017-08-18 at 10:04 -0700, Ram Pai wrote: > Assume two threads of a task. > > T1: mprotect_key(foo, PAGE_SIZE, pkey=4); > T1: set AMR to disable access for pkey 4; > T1: key fault > T2: set AMR to enable access to pkey 4; > T1: fault handler called. > This fault handler will see the new AMR and not the > one at the time of the fault.
You aren't context switching AMR with the threads ? Ugh... something is very wrong then. Ben.
