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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 10 Aug 2018 14:08:05 -0400 Received: from b01ledav006.gho.pok.ibm.com (b01ledav006.gho.pok.ibm.com [9.57.199.111]) by b01cxnp22036.gho.pok.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w7AI84uv66125894 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Fri, 10 Aug 2018 18:08:04 GMT Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 35EBFAC065; Fri, 10 Aug 2018 14:08:31 -0400 (EDT) Received: from b01ledav006.gho.pok.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 71D07AC060; Fri, 10 Aug 2018 14:08:30 -0400 (EDT) Received: from localhost (unknown [9.80.83.42]) by b01ledav006.gho.pok.ibm.com (Postfix) with ESMTPS; Fri, 10 Aug 2018 14:08:30 -0400 (EDT) Date: Fri, 10 Aug 2018 15:08:00 -0300 From: Murilo Opsfelder Araujo To: Christophe LEROY Cc: Michael Ellerman , Michael Neuling , Simon Guo , linux-kernel@vger.kernel.org, Nicholas Piggin , Paul Mackerras , "Eric W . Biederman" , Andrew Donnellan , "Alastair D'Silva" , Joe Perches , Sukadev Bhattiprolu , linuxppc-dev@lists.ozlabs.org, Cyril Bur , "Tobin C . Harding" Subject: Re: [PATCH v4 5/6] powerpc: Add show_user_instructions() References: <20180801213320.11203-1-muriloo@linux.ibm.com> <20180801213320.11203-6-muriloo@linux.ibm.com> <7209fa95-8d40-14ca-f27a-ce3edb64191e@c-s.fr> <20180803004201.GA5891@kermit-br-ibm-com> <69cf990b-d4aa-97e7-be3b-7936caa91688@c-s.fr> <87pnyzhm9l.fsf@concordia.ellerman.id.au> <20180803113141.GA5476@kermit-br-ibm-com> <1cfa56a3-027d-cf2c-3150-12aa45a35bd9@c-s.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1cfa56a3-027d-cf2c-3150-12aa45a35bd9@c-s.fr> User-Agent: Mutt/1.10.1 (2018-07-13) X-TM-AS-GCONF: 00 x-cbid: 18081018-0068-0000-0000-00000326E13B X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00009519; HX=3.00000242; KW=3.00000007; PH=3.00000004; SC=3.00000266; SDB=6.01071734; UDB=6.00551974; IPR=6.00851529; MB=3.00022638; MTD=3.00000008; XFM=3.00000015; UTC=2018-08-10 18:08:08 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18081018-0069-0000-0000-00004558AE5B Message-Id: <20180810180800.GB30475@kermit-br-ibm-com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-08-10_11:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=747 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1808100193 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi, Christophe. On Fri, Aug 10, 2018 at 11:29:43AM +0200, Christophe LEROY wrote: > > > Le 03/08/2018 à 13:31, Murilo Opsfelder Araujo a écrit : > > Hi, everyone. > > > > I'd like to thank you all that contributed to refining and making this > > series better. I did appreciate. > > > > Thank you! > > You are welcome. > > It seems that nested segfaults don't print very well. The code line is split > in two, le second half being alone on one line. Any way to avoid that ? What do you mean by "nested segfaults"? I'd guess it's related to nested virtualization, e.g.: host (kvm hv) -> guest1 (kvm pr) -> guest2? So the segfault would have been originated in guest2? Can you provide us with more details about how to reproduce that? Anyway, is "XXXXXXXX" so important that it needs to be printed at all? Can't we just discard it and not print it? Murilo