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s390: put _stext and _etext into .text section 

Perf relies on _etext and _stext symbols being one of 't', 'T', 'v' or
'V'. Put them into .text section to guarantee that.

Also moves padding to page boundary inside .text which has an effect that
.text section is now padded with nops rather than 0's, which apparently
has been the initial intention for specifying 0x0700 fill expression.

Reported-by: Thomas Richter <tmricht@linux.ibm.com>
Tested-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: Andreas Krebbel <krebbel@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-08-05 14:25:16 +02:00
parent b9f23b7376
commit 24350fdadb
1 changed files with 4 additions and 6 deletions
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8
arch/s390/kernel/vmlinux.lds.S
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@ -32,10 +32,9 @@ PHDRS {
SECTIONS SECTIONS
{ {
. = 0x100000; . = 0x100000;
_stext = .; /* Start of text section */
.text : { .text : {
/* Text and read-only data */ _stext = .; /* Start of text section */
_text = .; _text = .; /* Text and read-only data */
HEAD_TEXT HEAD_TEXT
TEXT_TEXT TEXT_TEXT
SCHED_TEXT SCHED_TEXT
@ -47,10 +46,9 @@ SECTIONS
*(.text.*_indirect_*) *(.text.*_indirect_*)
*(.fixup) *(.fixup)
*(.gnu.warning) *(.gnu.warning)
} :text = 0x0700
. = ALIGN(PAGE_SIZE); . = ALIGN(PAGE_SIZE);
_etext = .; /* End of text section */ _etext = .; /* End of text section */
} :text = 0x0700
NOTES :text :note NOTES :text :note