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Commit 608796ff authored by Martin Schwidefsky's avatar Martin Schwidefsky
Browse files

s390/vdso: move boot_vdso_data to vdso.c 



The boot_vdso_data variable is related to the vdso code, the magic of the
initial vdso area for the early boot and the replacement of it in vdso_init
should all be put into vdso.c.

Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent f554be42

arch/s390/include/asm/vdso.h

+1 −0
Original line number Diff line number Diff line
@@ -46,6 +46,7 @@ struct vdso_per_cpu_data { 


extern struct vdso_data *vdso_data;



void vdso_alloc_boot_cpu(struct lowcore *lowcore);

int vdso_alloc_per_cpu(struct lowcore *lowcore);

void vdso_free_per_cpu(struct lowcore *lowcore);

arch/s390/kernel/setup.c

+1 −1
Original line number Diff line number Diff line
@@ -349,7 +349,7 @@ static void __init setup_lowcore(void) 
		if (MACHINE_HAS_GS)

			lc->mcesad |= bits;

	}

	lc->vdso_per_cpu_data = (unsigned long) &lc->paste[0];

	vdso_alloc_boot_cpu(lc);

	lc->sync_enter_timer = S390_lowcore.sync_enter_timer;

	lc->async_enter_timer = S390_lowcore.async_enter_timer;

	lc->exit_timer = S390_lowcore.exit_timer;

arch/s390/kernel/vdso.c

+14 −0
Original line number Diff line number Diff line
@@ -140,6 +140,20 @@ static void __init vdso_init_data(struct vdso_data *vd) 
 */

#define SEGMENT_ORDER	2



/*

 * The initial vdso_data structure for the boot CPU. Eventually

 * it is replaced with a properly allocated structure in vdso_init.

 * This is necessary because a valid S390_lowcore.vdso_per_cpu_data

 * pointer is required to be able to return from an interrupt or

 * program check. See the exit paths in entry.S.

 */

struct vdso_data boot_vdso_data __initdata;



void __init vdso_alloc_boot_cpu(struct lowcore *lowcore)

{

	lowcore->vdso_per_cpu_data = (unsigned long) &boot_vdso_data;

}



int vdso_alloc_per_cpu(struct lowcore *lowcore)

{

	unsigned long segment_table, page_table, page_frame;