On Thu, Aug 11, 2011 at 18:18, jiangtao.jit <[email protected]> wrote: > Hi all: > > on booting of x86 > top of file arch/x86/boot/pmjump.S > there is code > ------------------- > GLOBAL(protected_mode_jump) > movl %edx, %esi > xorl %ebx, %ebx
i think it's zeroing bx (l--> low I suppose) > movw %cs, %bx then, it should zero the content of cs. Quite likely, it means to jump to cpu ring level 0 and do something there.. -- regards, Mulyadi Santosa Freelance Linux trainer and consultant blog: the-hydra.blogspot.com training: mulyaditraining.blogspot.com _______________________________________________ Kernelnewbies mailing list [email protected] http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
