On Wed, Jun 21, 2017 at 02:12:27AM +0000, Naoya Horiguchi wrote: > We had better have a reverse operation of this to cancel the unmapping > when unpoisoning? When we have unpoisoning, we can add something. We don't seem to have an inverse function for "set_memory_np" to just flip the _PRESENT bit back on again. But it would be trivial to write a set_memory_pp(). Since we'd be doing this after the poison has been cleared, we wouldn't need to play games with the address. We'd just use: set_memory_pp((unsigned long)pfn_to_kaddr(pfn), 1); -Tony -- 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>
