Merge branch 'x86/core' into x86/kconfig

[linux-2.6-omap-h63xx.git] / include / asm-generic / vmlinux.lds.h

diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h
index 53e21f36a802b9a067da15ffcb57a5ef9ec66a6b..5406e70aba864d1d03f154e36b2f212baacb93c4 100644 (file)
--- a/include/asm-generic/vmlinux.lds.h
+++ b/include/asm-generic/vmlinux.lds.h
@@ -445,10 +445,9 @@
  * section in the linker script will go there too.  @phdr should have
  * a leading colon.
  *
- * This macro defines three symbols, __per_cpu_load, __per_cpu_start
- * and __per_cpu_end.  The first one is the vaddr of loaded percpu
- * init data.  __per_cpu_start equals @vaddr and __per_cpu_end is the
- * end offset.
+ * Note that this macros defines __per_cpu_load as an absolute symbol.
+ * If there is no need to put the percpu section at a predetermined
+ * address, use PERCPU().
  */
 #define PERCPU_VADDR(vaddr, phdr)                                      \
        VMLINUX_SYMBOL(__per_cpu_load) = .;                             \
@@ -470,7 +469,20 @@
  * Align to @align and outputs output section for percpu area.  This
  * macro doesn't maniuplate @vaddr or @phdr and __per_cpu_load and
  * __per_cpu_start will be identical.
+ *
+ * This macro is equivalent to ALIGN(align); PERCPU_VADDR( , ) except
+ * that __per_cpu_load is defined as a relative symbol against
+ * .data.percpu which is required for relocatable x86_32
+ * configuration.
  */
 #define PERCPU(align)                                                  \
        . = ALIGN(align);                                               \
-       PERCPU_VADDR( , )
+       .data.percpu    : AT(ADDR(.data.percpu) - LOAD_OFFSET) {        \
+               VMLINUX_SYMBOL(__per_cpu_load) = .;                     \
+               VMLINUX_SYMBOL(__per_cpu_start) = .;                    \
+               *(.data.percpu.first)                                   \
+               *(.data.percpu.page_aligned)                            \
+               *(.data.percpu)                                         \
+               *(.data.percpu.shared_aligned)                          \
+               VMLINUX_SYMBOL(__per_cpu_end) = .;                      \
+       }