On Fri, Oct 23, 2020 at 02:39:24PM +0000, David Laight wrote: > 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. I've worked around the merge at the moment in the android tree, but it is still quite reproducable, and will try to get a .o file to disassemble on Monday or so... thanks, greg k-h
