linux-kernel - [PATCHv5 3/4] powerpc: Add build salt to the vDSO

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Date:   Tue,  3 Jul 2018 16:34:29 -0700
From:   Laura Abbott <labbott@...hat.com>
To:     mjw@...oraproject.org, "H . J . Lu" <hjl.tools@...il.com>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Michael Ellerman <mpe@...erman.id.au>
Cc:     Laura Abbott <labbott@...hat.com>,
        Andy Lutomirski <luto@...nel.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        X86 ML <x86@...nel.org>, linux-kernel@...r.kernel.org,
        Nick Clifton <nickc@...hat.com>,
        Cary Coutant <ccoutant@...il.com>,
        linux-kbuild@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        linux-arm-kernel@...ts.infradead.org
Subject: [PATCHv5 3/4] powerpc: Add build salt to the vDSO


The vDSO needs to have a unique build id in a similar manner
to the kernel and modules. Use the build salt macro.

Signed-off-by: Laura Abbott <labbott@...hat.com>
---
v5: New approach with the BUILD_SALT macro
---
 arch/powerpc/kernel/vdso32/note.S | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/powerpc/kernel/vdso32/note.S b/arch/powerpc/kernel/vdso32/note.S
index d4b5be4f3d5f..ec1d05265c75 100644
--- a/arch/powerpc/kernel/vdso32/note.S
+++ b/arch/powerpc/kernel/vdso32/note.S
@@ -5,6 +5,7 @@
 
 #include <linux/uts.h>
 #include <linux/version.h>
+#include <linux/build-salt.h>
 
 #define ASM_ELF_NOTE_BEGIN(name, flags, vendor, type)			      \
 	.section name, flags;						      \
@@ -23,3 +24,5 @@
 	ASM_ELF_NOTE_BEGIN(".note.kernel-version", "a", UTS_SYSNAME, 0)
 	.long LINUX_VERSION_CODE
 	ASM_ELF_NOTE_END
+
+BUILD_SALT;
-- 
2.17.1