From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from relay.hostedemail.com (smtprelay0011.hostedemail.com [216.40.44.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B0E972F49F5; Wed, 25 Jun 2025 22:57:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=216.40.44.11 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750892225; cv=none; b=SYx9XSHTCV7EasUoEBrJinuKhj7zbm27q896xQrNKJ6kfOR/Q5HGmfJ+aKpFw/qw5ZstRTBzRtGG0YtFcIPFzRMzu5K09LGttjap8cN/cp4yUIYTELgczReY9zFAWPX8aF8q82S3pUY4vOj6XtKqlK1GsJ28cfFsGNC8nTCpNVY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750892225; c=relaxed/simple; bh=/aoScwYOkCF4fLnSJ9PusAogYx2TOp0qIdg16G+Yb7Q=; h=Message-ID:Date:From:To:Cc:Subject:References:MIME-Version: Content-Type; b=fQMQslXxeDM0F1A3cjGjzhJkXeoge3KY5g2CQtX0NRaBCv+Bw38pJw35icQxB+Uzu7eOwFs0LAKBz/emNo6muPBuJGJTLla/vNexmS9yHVN8x1/dfABC2SdMapegtimQZTXm8DLY8ILTatDuJlwWjajc+lvWh3/U9xdIWKTsM1I= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org; spf=pass smtp.mailfrom=goodmis.org; arc=none smtp.client-ip=216.40.44.11 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=goodmis.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=goodmis.org Received: from omf11.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id CF0E71047D6; Wed, 25 Jun 2025 22:56:54 +0000 (UTC) Received: from [HIDDEN] (Authenticated sender: nevets@goodmis.org) by omf11.hostedemail.com (Postfix) with ESMTPA id A6AD22002A; Wed, 25 Jun 2025 22:56:51 +0000 (UTC) Received: from rostedt by gandalf with local (Exim 4.98.2) (envelope-from ) id 1uUZ3M-000000043ih-4AnM; Wed, 25 Jun 2025 18:57:16 -0400 Message-ID: <20250625225716.845688930@goodmis.org> User-Agent: quilt/0.68 Date: Wed, 25 Jun 2025 18:56:12 -0400 From: Steven Rostedt To: linux-kernel@vger.kernel.org, linux-trace-kernel@vger.kernel.org, bpf@vger.kernel.org, x86@kernel.org Cc: Masami Hiramatsu , Mathieu Desnoyers , Josh Poimboeuf , Peter Zijlstra , Ingo Molnar , Jiri Olsa , Namhyung Kim , Thomas Gleixner , Andrii Nakryiko , Indu Bhagat , "Jose E. Marchesi" , Beau Belgrave , Jens Remus , Linus Torvalds , Andrew Morton , Jens Axboe Subject: [PATCH v11 12/14] unwind_user/x86: Enable frame pointer unwinding on x86 References: <20250625225600.555017347@goodmis.org> Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Rspamd-Queue-Id: A6AD22002A X-Stat-Signature: y7ibt1sb6cisnqrdztz7p9mcbh1g56ua X-Rspamd-Server: rspamout06 X-Session-Marker: 6E657665747340676F6F646D69732E6F7267 X-Session-ID: U2FsdGVkX18chkwuygBM0JT0zRlSrIaGISejPZxbMlQ= X-HE-Tag: 1750892211-792006 X-HE-Meta: U2FsdGVkX1+r5j0ZARwzTyfNU2rD/H9qo77ZocLDdMtt7vCtufq3VPug3j2uI/FyTqW3TgAt5cfMKkBSzCe3B2PVIEzLB47+BoA+PpbEa/XvMksYqvFowFuvP0SfOYOQ6Fw65dDCCLPTPp14yJRMIOhRVTR72h1N84iggZjRkuLiUCuKFs6y4DCcTFnddSH0PMdshMRpAeN9cRvLjmlJAJdN/0zyL0padb7MdtGjR5dTgriUwTDrMrrDkNuAnw3G5Bo5syrZe2jLYSX2I0e/Ni784ljIDtava2Dybt4IJhSbqVnF14Q4B3rqR8qyEMBjjl7meB67DqkmN/nSW6smNEp5b4umN6ippnJzDW6dZEz6nTmL26ti4C83cvb05gBQvgrfnGYv+9rrls/SZEGDKVjnintwMBXUmOEOGh3HtlQ= From: Josh Poimboeuf Use ARCH_INIT_USER_FP_FRAME to describe how frame pointers are unwound on x86, and enable CONFIG_HAVE_UNWIND_USER_FP accordingly so the unwind_user interfaces can be used. Signed-off-by: Josh Poimboeuf Signed-off-by: Steven Rostedt (Google) --- arch/x86/Kconfig | 1 + arch/x86/include/asm/unwind_user.h | 11 +++++++++++ 2 files changed, 12 insertions(+) create mode 100644 arch/x86/include/asm/unwind_user.h diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 340e5468980e..2cdb5cf91541 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -302,6 +302,7 @@ config X86 select HAVE_SYSCALL_TRACEPOINTS select HAVE_UACCESS_VALIDATION if HAVE_OBJTOOL select HAVE_UNSTABLE_SCHED_CLOCK + select HAVE_UNWIND_USER_FP if X86_64 select HAVE_USER_RETURN_NOTIFIER select HAVE_GENERIC_VDSO select VDSO_GETRANDOM if X86_64 diff --git a/arch/x86/include/asm/unwind_user.h b/arch/x86/include/asm/unwind_user.h new file mode 100644 index 000000000000..8597857bf896 --- /dev/null +++ b/arch/x86/include/asm/unwind_user.h @@ -0,0 +1,11 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _ASM_X86_UNWIND_USER_H +#define _ASM_X86_UNWIND_USER_H + +#define ARCH_INIT_USER_FP_FRAME \ + .cfa_off = (s32)sizeof(long) * 2, \ + .ra_off = (s32)sizeof(long) * -1, \ + .fp_off = (s32)sizeof(long) * -2, \ + .use_fp = true, + +#endif /* _ASM_X86_UNWIND_USER_H */ -- 2.47.2