Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753609AbdCTNdy (ORCPT ); Mon, 20 Mar 2017 09:33:54 -0400 Received: from mx1.redhat.com ([209.132.183.28]:12572 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753307AbdCTNcr (ORCPT ); Mon, 20 Mar 2017 09:32:47 -0400 DMARC-Filter: OpenDMARC Filter v1.3.2 mx1.redhat.com 332E7624A8 Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; dmarc=none (p=none dis=none) header.from=redhat.com Authentication-Results: ext-mx10.extmail.prod.ext.phx2.redhat.com; spf=pass smtp.mailfrom=jpoimboe@redhat.com DKIM-Filter: OpenDKIM Filter v2.11.0 mx1.redhat.com 332E7624A8 Date: Mon, 20 Mar 2017 08:32:43 -0500 From: Josh Poimboeuf To: Jiri Slaby Cc: mingo@redhat.com, tglx@linutronix.de, hpa@zytor.com, x86@kernel.org, linux-kernel@vger.kernel.org, Boris Ostrovsky , Juergen Gross , xen-devel@lists.xenproject.org, "Rafael J. Wysocki" , Len Brown , Pavel Machek , linux-pm@vger.kernel.org Subject: Re: [PATCH v2 02/10] x86: assembly, FUNC_START for fn, DATA_START for data Message-ID: <20170320133243.5rvae6liwwqg4dve@treble> References: <9ea5e137-61f9-dccc-bb9d-ac3ff86e5867@suse.cz> <20170320123222.15453-1-jslaby@suse.cz> <20170320123222.15453-2-jslaby@suse.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <20170320123222.15453-2-jslaby@suse.cz> User-Agent: Mutt/1.6.0.1 (2016-04-01) X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Mon, 20 Mar 2017 13:32:47 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 701 Lines: 18 On Mon, Mar 20, 2017 at 01:32:14PM +0100, Jiri Slaby wrote: > This is a start of series to cleanup macros used for starting functions, > data, globals etc. across x86. When we have all this sorted out, this > will help to inject DWARF unwinding info by objtool later. > > The goal is forcing SYM_FUNC_START to emit .cfi_startproc and > SYM_FUNC_END to emit .cfi_endproc. Automatically at best. Do we still want to emit .cfi_startproc/endproc from the macro? From our last discussion, that seemed to be up in the air. https://lkml.kernel.org/r/20170217211804.j6l2d7t5mfzqzmbt@treble What did you think about making CFI read-only for .c object files and write-only for .S object files? -- Josh