From: Mikael Pettersson <mikpe@xxxxxxxx> Date: Tue, 18 Dec 2007 13:06:55 +0100 > My main question is: what does the kernel do to the > high 32 bits of the 64-bit integer registers during > context switches? Only %oX and %gX registers have the full 64-bit preserved across context switches for 32-bit processes. The %lX and %iX registers cannot have their full 64-bits preserved because the amount of save space is fixed by the register window save area layout on the stack, which only saves 32-bit values for each register. - To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
