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jump label: Add _ASM_ALIGN for x86 and x86_64

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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 <jbaron@redhat.com>
LKML-Reference: <e119fbd060c9452c56063ea6148ba1070e7434cc.1300299760.git.jbaron@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Jason Baron 2011-03-16 15:58:27 -04:00 committed by Steven Rostedt
parent d430d3d7e6
commit ef64789413
1 changed files with 1 additions and 0 deletions
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arch/x86/include/asm/jump_label.h
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@ -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);