From: David Hildenbrand > Sent: 23 October 2020 15:33 ... > I just checked against upstream code generated by clang 10 and it > properly discards the upper 32bit via a mov w23 w2. > > So at least clang 10 indeed properly assumes we could have garbage and > masks it off. > > Maybe the issue is somewhere else, unrelated to nr_pages ... or clang 11 > behaves differently. We'll need the disassembly from a failing kernel image. It isn't that big to hand annotate. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
