Commit d17b9ec7 authored by Al Viro's avatar Al Viro
Browse files

sparc64: get rid of fake_swapper_regs 



no reason to have ->kregs of initial thread set up in a special
way - we can keep them on stack, same as for every other thread.

Signed-off-by: default avatarAl Viro <viro@zeniv.linux.org.uk>
parent 5c8fe583

arch/sparc/include/asm/thread_info_64.h

+1 −0
Original line number Diff line number Diff line
@@ -118,6 +118,7 @@ struct thread_info { 
	.task		=	&tsk,			\

	.current_ds	=	ASI_P,			\

	.preempt_count	=	INIT_PREEMPT_COUNT,	\

	.kregs		=	(struct pt_regs *)(init_stack+THREAD_SIZE)-1 \

}



/* how to get the thread information struct from C */

arch/sparc/kernel/head_64.S

+1 −1
Original line number Diff line number Diff line
@@ -706,7 +706,7 @@ tlb_fixup_done: 
	wr	%g0, ASI_P, %asi

	mov	1, %g1

	sllx	%g1, THREAD_SHIFT, %g1

	sub	%g1, (STACKFRAME_SZ + STACK_BIAS), %g1

	sub	%g1, (STACKFRAME_SZ + STACK_BIAS + TRACEREG_SZ), %g1

	add	%g6, %g1, %sp



	/* Set per-cpu pointer initially to zero, this makes

arch/sparc/kernel/setup_64.c

+0 −4
Original line number Diff line number Diff line
@@ -165,8 +165,6 @@ extern int root_mountflags; 


char reboot_command[COMMAND_LINE_SIZE];



static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 };



static void __init per_cpu_patch(void)

{

	struct cpuid_patch_entry *p;
@@ -661,8 +659,6 @@ void __init setup_arch(char **cmdline_p) 
	rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK;

#endif



	task_thread_info(&init_task)->kregs = &fake_swapper_regs;



#ifdef CONFIG_IP_PNP

	if (!ic_set_manually) {

		phandle chosen = prom_finddevice("/chosen");