From nobody Sun Dec 28 19:30:44 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B0FF9C4167B for ; Tue, 5 Dec 2023 19:53:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232023AbjLETxL (ORCPT ); Tue, 5 Dec 2023 14:53:11 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45098 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229483AbjLETxK (ORCPT ); Tue, 5 Dec 2023 14:53:10 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5AE23A5 for ; Tue, 5 Dec 2023 11:53:16 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7299FC433C7; Tue, 5 Dec 2023 19:53:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1701805996; bh=5bILRm/voPLjGTGQ/2zk5RoYBOPSzOEdtIPbiV7rR0M=; h=From:Date:Subject:To:Cc:From; b=rZl2VeTYSyv0nFgj+9bbl3iP7V9JuPOrOv3FngmiP8rmM/cmIPfZO4ZVt5HMqze2a wpPLxbChLvQZeb8H/r8AKrB/henHwRHiuygWU90/qwrPmQ/3SEOzwQlcaUblDCcdhA DroFvHKIO20pJloDs+TkUx5xi/I6Rs83ja3ECGJBSKzWmnkiPTAhaDGcuJpVNE4QFH NkxGjxBe/ganelNIOLJST+/RadhGxN2eQbFPd2qzbZ8/igHqdJZThmV3O1JysdfHbH 5Q+Ut/CzvDRcy3NJfe32z7PGITCI22ZjzD7qCAZ14duhfswBUDdx/AyzAG+NFojt0P NOpDjKnvax1/w== From: Nathan Chancellor Date: Tue, 05 Dec 2023 12:53:08 -0700 Subject: [PATCH] x86/tools: objdump_reformat.awk: Skip bad instructions from llvm-objdump MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20231205-objdump_reformat-awk-handle-llvm-objdump-bad_expr-v1-1-b4a74f39396f@kernel.org> X-B4-Tracking: v=1; b=H4sIAKN/b2UC/zWN2wrCMBAFf6XsswtptHj5FZGyaVaNJk3YaC2U/ ruL4OPAnDkLVJbAFU7NAsJTqCGPCu2mgeFO440xeGWwxm5bazrM7uHfqfTC1yyJXkifJ6rpI2O MU/oL6Mj3PBfBI+93g7dkDq4D7Radhvn3eb6s6xengL9GgwAAAA== To: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org Cc: mhiramat@kernel.org, linux-kernel@vger.kernel.org, llvm@lists.linux.dev, patches@lists.linux.dev, Nathan Chancellor X-Mailer: b4 0.13-dev X-Developer-Signature: v=1; a=openpgp-sha256; l=1989; i=nathan@kernel.org; h=from:subject:message-id; bh=5bILRm/voPLjGTGQ/2zk5RoYBOPSzOEdtIPbiV7rR0M=; b=owGbwMvMwCUmm602sfCA1DTG02pJDKn59avvh/y0Yp8yseFB/C75KbV3D9tXvBTYeTTDb7/fp zXbeDniO0pZGMS4GGTFFFmqH6seNzScc5bxxqlJMHNYmUCGMHBxCsBEck8z/M9zP1Yfdo//ucHt O2ej3JYve8fS/WF/v3/gralT9/3hjjvCyPDadKqcXrDFjZd85To3Dwjf2RUm8XyT7/wDKrPmnDm zaD0/AA== X-Developer-Key: i=nathan@kernel.org; a=openpgp; fpr=2437CB76E544CB6AB3D9DFD399739260CB6CB716 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org When running the instruction decoder selftest with LLVM=3D1 + CONFIG_PVH=3Dy, there is a series of warnings: arch/x86/tools/insn_decoder_test: warning: Found an x86 instruction decod= er bug, please report this. arch/x86/tools/insn_decoder_test: warning: ffffffff81000050 ea = arch/x86/tools/insn_decoder_test: warning: objdump says 1 bytes, but insn= _get_length() says 7 arch/x86/tools/insn_decoder_test: warning: Decoded and checked 7214721 in= structions with 1 failures GNU objdump outputs "(bad)" instead of "", which is already handled in the bad_expr regex, so there is no warning. $ objdump -d arch/x86/platform/pvh/head.o | grep -E '50:\s+ea' 50: ea (bad) $ llvm-objdump -d arch/x86/platform/pvh/head.o | grep -E '50:\s+ea' 50: ea Add "" to the bad_expr regex to clear up the warning, allowing the instruction decoder selftest to fully pass with llvm-objdump. Signed-off-by: Nathan Chancellor --- arch/x86/tools/objdump_reformat.awk | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/tools/objdump_reformat.awk b/arch/x86/tools/objdump_r= eformat.awk index a4120d907277..20b08a6c4d33 100644 --- a/arch/x86/tools/objdump_reformat.awk +++ b/arch/x86/tools/objdump_reformat.awk @@ -11,7 +11,7 @@ BEGIN { prev_addr =3D "" prev_hex =3D "" prev_mnemonic =3D "" - bad_expr =3D "(\\(bad\\)|^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^cs$|^ss$|^d= s$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))" + bad_expr =3D "(\\(bad\\)||^rex|^.byte|^rep(z|nz)$|^lock$|^es$|^c= s$|^ss$|^ds$|^fs$|^gs$|^data(16|32)$|^addr(16|32|64))" fwait_expr =3D "^9b[ \t]*fwait" fwait_str=3D"9b\tfwait" } --- base-commit: 5225952d74d43e4c054731c74b8afd700b23a94a change-id: 20231205-objdump_reformat-awk-handle-llvm-objdump-bad_expr-9e74c= d2a08b5 Best regards, --=20 Nathan Chancellor