Hi Linus, On Thu, Oct 20, 2022 at 11:15 AM Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> wrote: > Can we please try to collect these all in one place? > > I see that Andrew picked up the original one for -mm, but I think it > would be better if we had one specific place for all of this (one > branch) to collect it all. Sure. Andrew can drop it from -mm, and I'll collect everything in: https://git.kernel.org/pub/scm/linux/kernel/git/zx2c4/linux.git/log/?h=unsigned-char&r And I'll ask Stephen to add that branch to -next. > I'm actually trying to do a "make allyesconfig" build on x86-64 with > both signed and unsigned char, and trying to see if I can script > something sane to show differences. > > Doing the build is easy, but the differences end up being huge just > due to silly constants (ie the whole "one small difference ends up > changing layout, which then causes hundreds of megs of diff just due > to hex constants in the disassembly changing". If you can get a copy of IDA Pro, diaphora is quite nice: https://github.com/joxeankoret/diaphora Or sometimes with objdump, I've had more success by keeping debug symbols, and then trimming offsets from jmps. Jason
