From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 101680 invoked by alias); 28 Feb 2018 15:37:52 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 101671 invoked by uid 89); 28 Feb 2018 15:37:52 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-6.8 required=5.0 tests=AWL,BAYES_00,GIT_PATCH_1,SPF_PASS,T_RP_MATCHES_RCVD autolearn=ham version=3.3.2 spammy=Hx-languages-length:1223 X-HELO: eggs.gnu.org Received: from eggs.gnu.org (HELO eggs.gnu.org) (208.118.235.92) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 28 Feb 2018 15:37:50 +0000 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1er3ne-0002F7-7b for gdb-patches@sourceware.org; Wed, 28 Feb 2018 10:37:49 -0500 Received: from fencepost.gnu.org ([2001:4830:134:3::e]:59337) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1er3ne-0002F1-4H; Wed, 28 Feb 2018 10:37:46 -0500 Received: from [176.228.60.248] (port=3424 helo=home-c4e4a596f7) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1er3nd-0000VR-IU; Wed, 28 Feb 2018 10:37:45 -0500 Date: Wed, 28 Feb 2018 15:37:00 -0000 Message-Id: <83po4pyvji.fsf@gnu.org> From: Eli Zaretskii To: "Metzger\, Markus T" CC: gdb-patches@sourceware.org In-reply-to: (markus.t.metzger@intel.com) Subject: Re: [PATCH 2/2] btrace: set/show record btrace cpu Reply-to: Eli Zaretskii References: <1519379570-16643-1-git-send-email-markus.t.metzger@intel.com> <1519379570-16643-2-git-send-email-markus.t.metzger@intel.com> <83woz34xuj.fsf@gnu.org> <83lgff1s4n.fsf@gnu.org> <83y3jez3yw.fsf@gnu.org> X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 2001:4830:134:3::e X-IsSubscribed: yes X-SW-Source: 2018-02/txt/msg00459.txt.bz2 > From: "Metzger, Markus T" > CC: "gdb-patches@sourceware.org" > Date: Wed, 28 Feb 2018 07:38:03 +0000 > > > > @item set record btrace cpu @var{identifier} > > Set the processor to be used for enabling workarounds for processor > > errata when decoding the trace. > > > > @cindex processor errata > > @dfn{Processor errata} are bugs in processor firmware that can cause > > a trace not to match the specification. Trace decoders that are > > unaware of these errata might fail to decode such a trace. > > @value{GDBN} can detect erroneous trace packets and correct them, > > thus avoiding the decoding failures. These corrections are known as > > @dfn{errata workarounds}, and are enabled based on the processor on > > which the trace was recorded. > > I'm not sure whether the term 'firmware' is correct. I would instead phrase > it like this: > > "Errata may cause the recorded trace to not match the specification. This, > in turn, may cause trace decode to fail". But that completely loses the explanation of what the errata are. If my explanation is not accurate, let's correct it, rather than deleting it.