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authorVasily Gorbik <gor@linux.ibm.com>2019-08-05 14:25:16 +0200
committerVasily Gorbik <gor@linux.ibm.com>2019-08-06 13:58:35 +0200
commit24350fdadbdec780406a1ef988e6cd3875e374a8 (patch)
tree75fc24d0714d6bd3d3bb30f1d6849d35764d66c4 /arch
parentb9f23b7376c21f5bf7f5e2b7dfcb82cc9ce92dfc (diff)
download96b-common-24350fdadbdec780406a1ef988e6cd3875e374a8.tar.gz
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/s390/kernel/vmlinux.lds.S10
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S
index 49d55327de0b..7e0eb4020917 100644
--- a/arch/s390/kernel/vmlinux.lds.S
+++ b/arch/s390/kernel/vmlinux.lds.S
@@ -32,10 +32,9 @@ PHDRS {
SECTIONS
{
. = 0x100000;
- _stext = .; /* Start of text section */
.text : {
- /* Text and read-only data */
- _text = .;
+ _stext = .; /* Start of text section */
+ _text = .; /* Text and read-only data */
HEAD_TEXT
TEXT_TEXT
SCHED_TEXT
@@ -47,11 +46,10 @@ SECTIONS
*(.text.*_indirect_*)
*(.fixup)
*(.gnu.warning)
+ . = ALIGN(PAGE_SIZE);
+ _etext = .; /* End of text section */
} :text = 0x0700
- . = ALIGN(PAGE_SIZE);
- _etext = .; /* End of text section */
-
NOTES :text :note
.dummy : { *(.dummy) } :data