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From:   Laura Abbott <labbott@redhat.com>
To:     Andy Lutomirski <luto@kernel.org>, mjw@fedoraproject.org,
        "H . J . Lu" <hjl.tools@gmail.com>,
        Masahiro Yamada <yamada.masahiro@socionext.com>
Cc:     Laura Abbott <labbott@redhat.com>,
        Linus Torvalds <torvalds@linux-foundation.org>,
        X86 ML <x86@kernel.org>, linux-kernel@vger.kernel.org,
        Nick Clifton <nickc@redhat.com>,
        Cary Coutant <ccoutant@gmail.com>,
        linux-kbuild@vger.kernel.org, linuxppc-dev@lists.ozlabs.org,
        Michael Ellerman <mpe@ellerman.id.au>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Will Deacon <will.deacon@arm.com>,
        linux-arm-kernel@lists.infradead.org
Subject: [PATCHv6 2/4] x86: Add build salt to the vDSO
Date:   Thu,  5 Jul 2018 17:49:38 -0700
Message-Id: <20180706004940.32587-3-labbott@redhat.com>
In-Reply-To: <20180706004940.32587-1-labbott@redhat.com>
References: <20180706004940.32587-1-labbott@redhat.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk


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

Acked-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Laura Abbott <labbott@redhat.com>
---
v6: Ack from Andy
---
 arch/x86/entry/vdso/vdso-note.S   | 3 +++
 arch/x86/entry/vdso/vdso32/note.S | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/arch/x86/entry/vdso/vdso-note.S b/arch/x86/entry/vdso/vdso-note.S
index 79a071e4357e..79423170118f 100644
--- a/arch/x86/entry/vdso/vdso-note.S
+++ b/arch/x86/entry/vdso/vdso-note.S
@@ -3,6 +3,7 @@
  * Here we can supply some information useful to userland.
  */
 
+#include <linux/build-salt.h>
 #include <linux/uts.h>
 #include <linux/version.h>
 #include <linux/elfnote.h>
@@ -10,3 +11,5 @@
 ELFNOTE_START(Linux, 0, "a")
 	.long LINUX_VERSION_CODE
 ELFNOTE_END
+
+BUILD_SALT
diff --git a/arch/x86/entry/vdso/vdso32/note.S b/arch/x86/entry/vdso/vdso32/note.S
index 9fd51f206314..e78047d119f6 100644
--- a/arch/x86/entry/vdso/vdso32/note.S
+++ b/arch/x86/entry/vdso/vdso32/note.S
@@ -4,6 +4,7 @@
  * Here we can supply some information useful to userland.
  */
 
+#include <linux/build-salt.h>
 #include <linux/version.h>
 #include <linux/elfnote.h>
 
@@ -14,6 +15,8 @@ ELFNOTE_START(Linux, 0, "a")
 	.long LINUX_VERSION_CODE
 ELFNOTE_END
 
+BUILD_SALT
+
 #ifdef CONFIG_XEN
 /*
  * Add a special note telling glibc's dynamic linker a fake hardware
-- 
2.17.1