From: Khalid Aziz <khalid.aziz@xxxxxxxxxx> Date: Mon, 7 Mar 2016 14:27:09 -0700 > I agree with your point of view. PSTATE.mcde and TTE.mcd are set in > response to request from userspace. If userspace asked for them to be > set, they already know but it was the database guys that asked for > these two functions and they are the primary customers for the ADI > feature. I am not crazy about this idea since this extends the > mprotect API even further but would you consider using the return > value from mprotect to indicate if PSTATE.mcde or TTE.mcd were already > set on the given address? Well, that's the idea. If the mprotect using MAP_ADI or whatever succeeds, then ADI is enabled. Users can thus also pass MAP_ADI as a flag to mmap() to get ADI protection from the very beginning. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>