Messages in this thread Patch in this message | | | From | David Woodhouse <> | Subject | [PATCH v3 12/13] retpoline/objtool: Disable some objtool warnings | Date | Thu, 4 Jan 2018 14:37:09 +0000 |
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From: Andi Kleen <ak@linux.intel.com>
With the indirect call thunk enabled compiler two objtool warnings are triggered very frequently and make the build very noisy.
I don't see a good way to avoid them, so just disable them for now.
Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> --- tools/objtool/check.c | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c index 9b341584eb1b..435c71f944dc 100644 --- a/tools/objtool/check.c +++ b/tools/objtool/check.c @@ -503,8 +503,13 @@ static int add_call_destinations(struct objtool_file *file) insn->call_dest = find_symbol_by_offset(insn->sec, dest_off); if (!insn->call_dest) { +#if 0 + /* Compilers with -mindirect-branch=thunk-extern trigger + * this everywhere on x86. Disable for now. + */ WARN_FUNC("can't find call dest symbol at offset 0x%lx", insn->sec, insn->offset, dest_off); +#endif return -1; } } else if (rela->sym->type == STT_SECTION) { @@ -1716,8 +1721,14 @@ static int validate_branch(struct objtool_file *file, struct instruction *first, return 1; } else if (func && has_modified_stack_frame(&state)) { +#if 0 + /* Compilers with -mindirect-branch=thunk-extern trigger + * this everywhere on x86. Disable for now. + */ + WARN_FUNC("sibling call from callable instruction with modified stack frame", sec, insn->offset); +#endif return 1; } -- 2.14.3
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