x86/unwind: Disable unwinder warnings on 32-bit
x86-32 doesn't have stack validation, so in most cases it doesn't make sense to warn about bad frame pointers. Reported-by: NTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Signed-off-by: NJosh Poimboeuf <jpoimboe@redhat.com> Cc: Byungchul Park <byungchul.park@lge.com> Cc: Fengguang Wu <fengguang.wu@intel.com> Cc: LKP <lkp@01.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/a69658760800bf281e6353248c23e0fa0acf5230.1507597785.git.jpoimboe@redhat.comSigned-off-by: NIngo Molnar <mingo@kernel.org>
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