On Tue, Jun 03, 2014 at 12:18:43PM +0100, Maciej W. Rozycki wrote: > Do we need this CPU_HAS_SMARTMIPS setting at all? Can't we just > save/restore this SmartMIPS ACX register on context switches where > available (straightforward to detect at the run time) and have the > relevant pieces of code excluded (#ifdef-ed out or suchlike) on > non-supported configurations such as microMIPS or MIPS64? SmartMIPS has new instructions which are hardcoded in various assembler fragments, where something like if (cpu_has_smartmips) won't work. So until a more complex solution is implemented CPU_HAS_SMARTMIPS is what there is. Ralf
