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| author | Jan Glauber <jang@linux.vnet.ibm.com> | 2011-07-24 10:48:19 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-07-24 10:48:21 +0200 |
| commit | 144d634a21caff1d54cb4bb0d073774e88130045 (patch) | |
| tree | 9eea288248189b899ee85ba346cf344e57dd402a /arch/s390/kernel/switch_cpu.S | |
| parent | 603d1a50acf252621a3598618b018b8123aaba64 (diff) | |
| download | blackbird-op-linux-144d634a21caff1d54cb4bb0d073774e88130045.tar.gz blackbird-op-linux-144d634a21caff1d54cb4bb0d073774e88130045.zip | |
[S390] fix s390 assembler code alignments
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>
Diffstat (limited to 'arch/s390/kernel/switch_cpu.S')
| -rw-r--r-- | arch/s390/kernel/switch_cpu.S | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/arch/s390/kernel/switch_cpu.S b/arch/s390/kernel/switch_cpu.S index 20530dd2eab1..bfe070bc7659 100644 --- a/arch/s390/kernel/switch_cpu.S +++ b/arch/s390/kernel/switch_cpu.S @@ -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) |
