[PATCH] x86: Provide _sdata in the vmlinux.lds.S file

[Catalin Marinas]

_sdata is a common symbol defined by many architectures and made
available to the kernel via asm-generic/sections.h. Kmemleak uses this
symbol when scanning the data sections.

Signed-off-by: Catalin Marinas <catalin.marinas@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
---

(This patch is against the tip/master branch)

 arch/x86/kernel/vmlinux.lds.S |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index 4c85b2e..367e878 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -108,6 +108,8 @@ SECTIONS
 	/* Data */
 	. = ALIGN(PAGE_SIZE);
 	.data : AT(ADDR(.data) - LOAD_OFFSET) {
+		/* Start of data section */
+		_sdata = .;
 		DATA_DATA
 		CONSTRUCTORS
 

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