linux-kernel - [PATCH v3 9/9] x86: remove .gnu.warning* sections from the vDSO

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Date:	Tue, 16 Jun 2009 14:55:29 +0200
From:	Petr Tesarik <ptesarik@...e.cz>
To:	LKML <linux-kernel@...r.kernel.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, Andi Kleen <andi@...stfloor.org>,
	Roland McGrath <roland@...hat.com>,
	Petr Tesarik <ptesarik@...e.cz>
Subject: [PATCH v3 9/9] x86: remove .gnu.warning* sections from the vDSO

The .gnu.warning* sections are only processed by ld, but ld will never
explicitly link against the vDSO, so it can be discarded.

Signed-off-by: Petr Tesarik <ptesarik@...e.cz>
---
 arch/x86/vdso/vdso-layout.lds.S |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index 0bef418..d199f25 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -112,6 +112,12 @@ SECTIONS
 		*(.altinstructions)
 		*(.altinstr_replacement)
 	}
+
+	/* These sections are not useful to user-space */
+	/DISCARD/ : {
+		*(.gnu.warning*)
+		*(.discard)
+	}
 }
 
 /*
-- 
1.6.0.2

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