On Sun, Apr 15, 2007 at 11:25:52PM +0800, tiansm@xxxxxxxxxx wrote: > @@ -1681,6 +1712,13 @@ config CPU_HAS_SMARTMIPS > config CPU_HAS_WB > bool > > +config 64BIT_CONTEXT > + bool "Save 64bit integer registers" if CPU_LOONGSON2 && 32BIT > + help > + Loongson2 CPU is 64bit , when used in 32BIT mode, its integer registers > + can still be accessed as 64bit, mainly for multimedia instructions. We must have > + all 64bit save/restored to make sure those instructions to get correct result. > + Is there anything in implementation of this option Loongson2-specific? If not then I suggest we make this option loook like: bool "Save 64bit integer registers" if CPU_SUPPORTS_64BIT_KERNEL && 32BIT Somebody else might have a use for it! Ralf
