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[S390] fix s390 assembler code alignments

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The alignment is missing for various global symbols in s390 assembly code.
With a recent gcc and an instruction like stgrl this can lead to a
specification exception if the instruction uses such a mis-aligned address.

Specify the alignment explicitely and while add it define __ALIGN for s390
and use the ENTRY define to save some lines of code.

Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Jan Glauber
2011-07-24 10:48:19 +02:00
committed by Martin Schwidefsky
parent 603d1a50ac
commit 144d634a21
21 changed files with 378 additions and 680 deletions
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8
arch/s390/kernel/switch_cpu.S
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@@ -5,6 +5,7 @@
*
*/
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
#include <asm/ptrace.h>
@@ -16,9 +17,7 @@
# %r6 - destination cpu
.section .text
.align 4
.globl smp_switch_to_cpu
smp_switch_to_cpu:
ENTRY(smp_switch_to_cpu)
stm %r6,%r15,__SF_GPRS(%r15)
lr %r1,%r15
ahi %r15,-STACK_FRAME_OVERHEAD
@@ -33,8 +32,7 @@ smp_switch_to_cpu:
brc 2,2b /* busy, try again */
3: j 3b
.globl smp_restart_cpu
smp_restart_cpu:
ENTRY(smp_restart_cpu)
basr %r13,0
0: la %r1,.gprregs_addr-0b(%r13)
l %r1,0(%r1)