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Thu, 19 Mar 2020 13:51:21 +0000 Received: from pps.filterd (userp3020.oracle.com [127.0.0.1]) by userp3020.oracle.com (8.16.0.42/8.16.0.42) with SMTP id 02JDoesY139259; Thu, 19 Mar 2020 13:51:21 GMT Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userp3020.oracle.com with ESMTP id 2ys90440s0-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 19 Mar 2020 13:51:21 +0000 Received: from abhmp0008.oracle.com (abhmp0008.oracle.com [141.146.116.14]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 02JDpJmA011291; Thu, 19 Mar 2020 13:51:19 GMT Received: from [192.168.1.140] (/47.220.71.223) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Thu, 19 Mar 2020 06:51:18 -0700 Subject: Re: [PATCH 2/2] Documentation/vmcoreinfo: Add documentation for 'KERNELPACMASK' To: Amit Daniel Kachhap , linux-arm-kernel@lists.infradead.org Cc: Mark Rutland , Catalin Marinas , Bhupesh Sharma , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, James Morse , Dave Anderson , Vincenzo Frascino , Will Deacon References: <1584603551-23845-1-git-send-email-amit.kachhap@arm.com> <1584603551-23845-2-git-send-email-amit.kachhap@arm.com> From: John Donnelly Message-ID: <5235269c-e3c7-efff-6083-a05a39699735@Oracle.com> Date: Thu, 19 Mar 2020 08:51:16 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <1584603551-23845-2-git-send-email-amit.kachhap@arm.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9564 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 phishscore=0 mlxlogscore=999 mlxscore=0 adultscore=0 bulkscore=0 malwarescore=0 spamscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003190061 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9564 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 bulkscore=0 suspectscore=0 lowpriorityscore=0 phishscore=0 adultscore=0 clxscore=1011 impostorscore=0 priorityscore=1501 spamscore=0 mlxlogscore=999 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2003190061 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 3/19/20 2:39 AM, Amit Daniel Kachhap wrote: > Add documentation for KERNELPACMASK variable being added to vmcoreinfo. > > It indicates the PAC bits mask information of signed kernel pointers if > ARMv8.3-A Pointer Authentication feature is present. > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Mark Rutland > Cc: James Morse > Cc: Dave Anderson > Signed-off-by: Amit Daniel Kachhap > --- > Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++ > 1 file changed, 6 insertions(+) > > diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst > index 007a6b8..5cc3ee6 100644 > --- a/Documentation/admin-guide/kdump/vmcoreinfo.rst > +++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst > @@ -393,6 +393,12 @@ KERNELOFFSET > The kernel randomization offset. Used to compute the page offset. If > KASLR is disabled, this value is zero. > > +KERNELPACMASK > +------------- > + > +Indicates the PAC bits mask information if Pointer Authentication is > +enabled and address authentication feature is present. > + > arm > === > > > Hi, Does this require changes to the makedumpfile or crash utilities ? -- Thank You, John