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authorHendrik Brueckner <brueckner@linux.vnet.ibm.com>2009-09-11 10:28:42 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2009-09-11 10:29:47 +0200
commita8c3cb4955d1a051732ead9ecf8bcffc8e7c039d (patch)
tree434c789a7b4e3484ef077f1185d09924ee93d3c6 /arch/s390/kernel/entry64.S
parent18d00acfe2f3fc5ee62f679eb2e397ae962fe69b (diff)
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[S390] move (io|sysc)_restore_trace_psw into .data section
The sysc_restore_trace_psw and io_restore_trace_psw storage locations are created in the .text section. When creating and IPLing from a named saved system (NSS), writing to these locations causes a protection exception (because the .text section is mapped as shared read-only in the NSS). To permit write access, move the storage locations into the .data section. The problem occurs only when CONFIG_TRACE_IRQFLAGS is set. The git commmit that has introduced these variables is: 411788ea7fca01ee803af8225ac35807b4d02050 Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/entry64.S')
-rw-r--r--arch/s390/kernel/entry64.S4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S
index f6618e9e15ef..009ca6175db9 100644
--- a/arch/s390/kernel/entry64.S
+++ b/arch/s390/kernel/entry64.S
@@ -284,10 +284,12 @@ sysc_leave:
sysc_done:
#ifdef CONFIG_TRACE_IRQFLAGS
+ .section .data,"aw",@progbits
.align 8
.globl sysc_restore_trace_psw
sysc_restore_trace_psw:
.quad 0, sysc_restore_trace
+ .previous
#endif
#
@@ -595,10 +597,12 @@ io_leave:
io_done:
#ifdef CONFIG_TRACE_IRQFLAGS
+ .section .data,"aw",@progbits
.align 8
.globl io_restore_trace_psw
io_restore_trace_psw:
.quad 0, io_restore_trace
+ .previous
#endif
#
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