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Revert "objtool: Support addition to set CFA base"
[ Upstream commite18398e80c
] Commit468af56a7b
("objtool: Support addition to set CFA base") was added as a preparatory patch for arm64 support, but that support never came. It triggers a false positive warning on x86, so just revert it for now. Fixes the following warning: vmlinux.o: warning: objtool: cdce925_regmap_i2c_write+0xdb: stack state mismatch: cfa1=4+120 cfa2=5+40 Fixes:468af56a7b
("objtool: Support addition to set CFA base") Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/oe-kbuild-all/202304080538.j5G6h1AB-lkp@intel.com/ Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 0 additions and 11 deletions
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@ -2757,17 +2757,6 @@ static int update_cfi_state(struct instruction *insn,
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break;
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break;
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}
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}
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if (!cfi->drap && op->src.reg == CFI_SP &&
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op->dest.reg == CFI_BP && cfa->base == CFI_SP &&
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check_reg_frame_pos(®s[CFI_BP], -cfa->offset + op->src.offset)) {
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/* lea disp(%rsp), %rbp */
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cfa->base = CFI_BP;
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cfa->offset -= op->src.offset;
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cfi->bp_scratch = false;
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break;
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}
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if (op->src.reg == CFI_SP && cfa->base == CFI_SP) {
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if (op->src.reg == CFI_SP && cfa->base == CFI_SP) {
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/* drap: lea disp(%rsp), %drap */
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/* drap: lea disp(%rsp), %drap */
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