objtool: Make unreachable annotation inline asms explicitly volatile
Add 'volatile' to the unreachable annotation macro inline asm statements. They're already implicitly volatile because they don't have output constraints, but it's clearer and more robust to make them explicitly volatile. Suggested-by: NLinus Torvalds <torvalds@linux-foundation.org> Signed-off-by: NJosh Poimboeuf <jpoimboe@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/28659257b7a6adf4a7f65920dad70b2b0226e996.1509974104.git.jpoimboe@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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