the asm causes failures on some archs under certain conditions and is disabled in debian/ubuntu as shown in the linked debian bug. There's quite a lot of detail in the debian bug if you would like more specific detail on why the asm shouldn't be used
> I also don't understand what's going on here
the asm causes failures on some archs under certain conditions and is disabled in debian/ubuntu as shown in the linked debian bug. There's quite a lot of detail in the debian bug if you would like more specific detail on why the asm shouldn't be used