From: Huacai Chen > Sent: 02 February 2023 08:43 > > Introduce Kconfig option ARCH_STRICT_ALIGN to make -mstrict-align be > configurable. > > Not all LoongArch cores support h/w unaligned access, we can use the > -mstrict-align build parameter to prevent unaligned accesses. > > This option is disabled by default to optimise for performance, but you > can enabled it manually if you want to run kernel on systems without h/w > unaligned access support. Should there be an associated run-time check during kernel initialisation that a kernel compiled without -mstrict-align isn't being run on hardware that doesn't support unaligned accesses. It can be quite a while before you get a compiler-generated misaligned accesses. Also isn't there a HAVE_EFFICIENT_MISALIGNED_ACCESS define that would also need to be set correctly?? David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
