From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 114418 invoked by alias); 2 Mar 2018 19:04:09 -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 114093 invoked by uid 89); 2 Mar 2018 19:04:09 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_PASS,TIME_LIMIT_EXCEEDED autolearn=unavailable version=3.3.2 spammy=manufacture X-HELO: 9pmail.ess.barracuda.com Received: from 9pmail.ess.barracuda.com (HELO 9pmail.ess.barracuda.com) (64.235.154.210) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 02 Mar 2018 19:03:58 +0000 Received: from MIPSMAIL01.mipstec.com (mailrelay.mips.com [12.201.5.28]) by mx1402.ess.rzc.cudaops.com (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NO); Fri, 02 Mar 2018 19:03:27 +0000 Received: from [10.20.78.177] (10.20.78.177) by mips01.mipstec.com (10.20.43.31) with Microsoft SMTP Server id 14.3.361.1; Fri, 2 Mar 2018 10:25:40 -0800 Date: Fri, 02 Mar 2018 19:04:00 -0000 From: "Maciej W. Rozycki" To: Eli Zaretskii CC: , Subject: Re: [PATCH 2/2] btrace: set/show record btrace cpu In-Reply-To: <838tbawkpa.fsf@gnu.org> Message-ID: 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> <83po4pyvji.fsf@gnu.org> <83muzryhql.fsf@gnu.org> <837eqvy5on.fsf@gnu.org> <838tbawkpa.fsf@gnu.org> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" X-BESS-ID: 1520017404-321458-1987-3527-6 X-BESS-VER: 2018.2-r1802232356 X-BESS-Apparent-Source-IP: 12.201.5.28 X-BESS-Outbound-Spam-Score: 0.00 X-BESS-Outbound-Spam-Report: Code version 3.2, rules version 3.2.2.190607 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------- 0.00 BSF_BESS_OUTBOUND META: BESS Outbound X-BESS-Outbound-Spam-Status: SCORE=0.00 using account:ESS59374 scores of KILL_LEVEL=7.0 tests=BSF_BESS_OUTBOUND X-BESS-BRTS-Status:1 X-SW-Source: 2018-03/txt/msg00067.txt.bz2 On Fri, 2 Mar 2018, Eli Zaretskii wrote: > > So how about: > > > > Processor errata are known to exist 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 or workarounds are enabled based on the processor on > > which the trace was recorded. > > That still doesn't explain what are those errata. > > How about replacing the first sentence above with these two: > > Processor errata are defects in processor operation, caused by its > design or manufacture. They can cause a trace not to match the > specification. Fine with me. Maciej