jump label: Add _ASM_ALIGN for x86 and x86_64

The linker should not be adding holes to word size aligned pointers, but out of paranoia we are explicitly specifying that alignment. I have not seen any holes in the jump label section in practice. Signed-off-by: Jason Baron <[email protected]> LKML-Reference: <e119fbd060c9452c56063ea6148ba1070e7434cc.1300299760.git.jbaron@redhat.com> Acked-by: Peter Zijlstra <[email protected]> Acked-by: Mathieu Desnoyers <[email protected]> Signed-off-by: Steven Rostedt <[email protected]>
mkatiyar · Apr 4, 2011 · ef64789 · ef64789
1 parent d430d3d
commit ef64789
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/arch/x86/include/asm/jump_label.h b/arch/x86/include/asm/jump_label.h
@@ -16,6 +16,7 @@ static __always_inline bool arch_static_branch(struct jump_label_key *key)
 	asm goto("1:"
 		JUMP_LABEL_INITIAL_NOP
 		".pushsection __jump_table,  \"aw\" \n\t"
+		_ASM_ALIGN "\n\t"
 		_ASM_PTR "1b, %l[l_yes], %c0 \n\t"
 		".popsection \n\t"
 		: :  "i" (key) : : l_yes);