x86, vmlinux.lds: unify parainstructions

32 bit:

 - increase alignment from 4 to 8 for .parainstructions
 - increase alignment from 4 to 8 for .altinstructions

64 bit:

 - move ALIGN() outside output section for .altinstructions

None of the above should result in any functional change.

[ Impact: refactor and unify linker script ]
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Tim Abbott <tabbott@MIT.EDU>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
LKML-Reference: <1240991249-27117-10-git-send-email-sam@ravnborg.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

arch/x86/kernel/vmlinux.lds.S

@@ -291,6 +291,24 @@ SECTIONS
 
 	SECURITY_INIT
 
+	. = ALIGN(8);
+	.parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
+		__parainstructions = .;
+		*(.parainstructions)
+		__parainstructions_end = .;
+	}
+
+	. = ALIGN(8);
+	.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
+		__alt_instructions = .;
+		*(.altinstructions)
+		__alt_instructions_end = .;
+	}
+
+	.altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
+		*(.altinstr_replacement)
+	}
+
 
 #ifdef CONFIG_X86_32
 # include "vmlinux_32.lds.S"

arch/x86/kernel/vmlinux_32.lds.S

-	. = ALIGN(4);
-	.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
-		__alt_instructions = .;
-		*(.altinstructions)
-		__alt_instructions_end = .;
-	}
-
-	.altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
-		*(.altinstr_replacement)
-	}
-
-	. = ALIGN(4);
-	.parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
-		__parainstructions = .;
-		*(.parainstructions)
-		__parainstructions_end = .;
-	}
-
 	/*
 	 * .exit.text is discard at runtime, not link time, to deal with
 	 *  references from .altinstructions and .eh_frame

arch/x86/kernel/vmlinux_64.lds.S

-	. = ALIGN(8);
-	.parainstructions : AT(ADDR(.parainstructions) - LOAD_OFFSET) {
-		__parainstructions = .;
-		*(.parainstructions)
-		__parainstructions_end = .;
-	}
-
-	.altinstructions : AT(ADDR(.altinstructions) - LOAD_OFFSET) {
-		. = ALIGN(8);
-		__alt_instructions = .;
-		*(.altinstructions)
-		__alt_instructions_end = .;
-	}
-
-	.altinstr_replacement : AT(ADDR(.altinstr_replacement) - LOAD_OFFSET) {
-		*(.altinstr_replacement)
-	}
-
 	/*
 	 * .exit.text is discard at runtime, not link time, to deal with
 	 *  references from .altinstructions and .eh_frame