linux-kernel - [tip:x86/vdso] x86, vdso: Actually discard the .discard sections

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Message-ID: <tip-psizrnant8x3nrhbgvq2vekr@git.kernel.org>
Date:	Tue, 25 Mar 2014 13:45:36 -0700
From:	"tip-bot for H. Peter Anvin" <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	linux-kernel@...r.kernel.org, luto@...capital.net, hpa@...or.com,
	mingo@...nel.org, stefani@...bold.net, tglx@...utronix.de,
	hpa@...ux.intel.com
Subject: [tip:x86/vdso] x86, vdso: Actually discard the .discard sections

Commit-ID:  26f5ef2e3c3c18f1dc31461ddf1db00b014edcd4
Gitweb:     http://git.kernel.org/tip/26f5ef2e3c3c18f1dc31461ddf1db00b014edcd4
Author:     H. Peter Anvin <hpa@...ux.intel.com>
AuthorDate: Tue, 25 Mar 2014 13:41:36 -0700
Committer:  H. Peter Anvin <hpa@...ux.intel.com>
CommitDate: Tue, 25 Mar 2014 13:41:36 -0700

x86, vdso: Actually discard the .discard sections

The .discard/.discard.* sections are used to generate intermediate
results for the assembler (effectively "test assembly".)  The output
is waste and should not be retained.

Cc: Stefani Seibold <stefani@...bold.net>
Cc: Andy Lutomirski <luto@...capital.net>
Signed-off-by: H. Peter Anvin <hpa@...ux.intel.com>
Link: http://lkml.kernel.org/n/tip-psizrnant8x3nrhbgvq2vekr@git.kernel.org
---
 arch/x86/vdso/vdso-layout.lds.S | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/x86/vdso/vdso-layout.lds.S b/arch/x86/vdso/vdso-layout.lds.S
index c6d0e1b..2e263f3 100644
--- a/arch/x86/vdso/vdso-layout.lds.S
+++ b/arch/x86/vdso/vdso-layout.lds.S
@@ -62,6 +62,11 @@ SECTIONS
 	. = ALIGN(0x100);
 
 	.text		: { *(.text*) }			:text	=0x90909090
+
+	/DISCARD/ : {
+		*(.discard)
+		*(.discard.*)
+	}
 }
 
 /*
--
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