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Subject[PATCH v2 8/8] x86: remove unneeded section from the vDSO
Date
Some standard sections are not useful in the resulting binary.

.gnu.warning.* is only interesting for the linker.

.note.* may be discarded, except:
.note.Linux which contains the Linux version
.note.gnu.build-id which may be useful for identifying
the vDSO

Signed-off-by: Petr Tesarik <ptesarik@suse.cz>
---
arch/x86/vdso/vdso-layout.lds.S | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 3b56e2f..b70c27d 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -31,7 +31,8 @@ SECTIONS
}

.note : {
- *(.note.*)
+ *(.note.Linux)
+ *(.note.gnu.build-id)
} :text :note

.eh_frame_hdr : {
@@ -100,6 +101,12 @@ SECTIONS
*(.altinstructions)
*(.altinstr_replacement)
}
+
+ /* These sections are not useful to user-space */
+ /DISCARD/ : {
+ *(.gnu.warning.*)
+ *(.note.*)
+ }
}

/* This assert is triggered if the linker finds a section in one of its
--
1.6.0.2


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