linux-kernel - [PATCH] x86-32: Fix __per_cpu

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Message-Id: <1232977445-11815-1-git-send-email-brgerst@gmail.com>
Date:	Mon, 26 Jan 2009 08:44:05 -0500
From:	Brian Gerst <brgerst@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	Tejun Heo <tj@...nel.org>, linux-kernel@...r.kernel.org
Subject: [PATCH] x86-32: Fix __per_cpu_load relocation

This patch fixes this error:
WARNING: Absolute relocations present
Offset     Info     Type     Sym.Value Sym.Name
c0a4e07d 00e78001   R_386_32 c0ab0000  __per_cpu_load

Now, __per_cpu_load is a section-relative symbol:
c0aa4000 D __per_cpu_load
c0aa4000 A __per_cpu_load_abs

Signed-off-by: Brian Gerst <brgerst@...il.com>
---
 include/asm-generic/vmlinux.lds.h |    7 ++++---
 1 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 53e21f3..f3180a8 100644
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -451,17 +451,18 @@
  * end offset.
  */
 #define PERCPU_VADDR(vaddr, phdr)					\
-	VMLINUX_SYMBOL(__per_cpu_load) = .;				\
-	.data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load)		\
+	VMLINUX_SYMBOL(__per_cpu_load_abs) = .;				\
+	.data.percpu vaddr : AT(VMLINUX_SYMBOL(__per_cpu_load_abs)	\
 				- LOAD_OFFSET) {			\
 		VMLINUX_SYMBOL(__per_cpu_start) = .;			\
+		VMLINUX_SYMBOL(__per_cpu_load) = LOADADDR(.data.percpu) + LOAD_OFFSET;\
 		*(.data.percpu.first)					\
 		*(.data.percpu.page_aligned)				\
 		*(.data.percpu)						\
 		*(.data.percpu.shared_aligned)				\
 		VMLINUX_SYMBOL(__per_cpu_end) = .;			\
 	} phdr								\
-	. = VMLINUX_SYMBOL(__per_cpu_load) + SIZEOF(.data.percpu);
+	. = VMLINUX_SYMBOL(__per_cpu_load_abs) + SIZEOF(.data.percpu);
 
 /**
  * PERCPU - define output section for percpu area, simple version
-- 
1.6.1

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