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          "value" : "jump table optimization tries to optimize switch statements\\r\\ninto an array access. But such optimization will place certain\\r\\ninformation, acted as the array, in the read-only section.\\r\\nCurrently, bcc does not support read-only section, so\\r\\njump table optimized code will fail during kernel verification.\\r\\nThis is what happened to biolatpcts.py in my environment with\\r\\nlatest llvm.\\r\\n```\\r\\n  -bash-4.4$ sudo ./biolatpcts.py console\\r\\n  bpf: Failed to load program: Invalid argument\\r\\n  unknown opcode 60\\r\\n  processed 0 insns (limit 1000000) max_states_per_insn 0 total_states 0 peak_states 0 mark_read 0\\r\\n\\r\\n  HINT: The 'unknown opcode' can happen if you reference a global or static variable,\\r\\n  or data in read-only section. For example, 'char *p = \\\"hello\\\"' will result in p\\r\\n  referencing a read-only section, and 'char p[] = \\\"hello\\\"' will have \\\"hello\\\" stored on the stack.\\r\\n```\\r\\nThis patch disabled jump table optimization on x64. The jump table\\r\\noptimization is introduced in llvm 3.9, I presume all bcc users\\r\\nshould already start to use recent llvm, so I go ahead to disable\\r\\nit without guarding based on llvm version. We can disable jump\\r\\ntable on other architectures if needed. A test case, developed\\r\\nbased biolatpcts.py tool, is added to ensure it pass the verifier.\\r\\n\\r\\nSigned-off-by: Yonghong Song <yhs@fb.com>"
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