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 from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
