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Mon, 10 Feb 2020 20:28:48 GMT Received: from aserv0121.oracle.com (aserv0121.oracle.com [141.146.126.235]) by aserp3030.oracle.com with ESMTP id 2y26htm1rt-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 10 Feb 2020 20:28:48 +0000 Received: from abhmp0002.oracle.com (abhmp0002.oracle.com [141.146.116.8]) by aserv0121.oracle.com (8.14.4/8.13.8) with ESMTP id 01AKSlLV016847; Mon, 10 Feb 2020 20:28:47 GMT Received: from bostrovs-us.us.oracle.com (/10.152.32.65) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 10 Feb 2020 12:28:47 -0800 Subject: Re: [PATCH v3 2/4] x86/xen: add basic KASAN support for PV kernel To: Sergey Dyasli , xen-devel@lists.xen.org, kasan-dev@googlegroups.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Cc: Andrey Ryabinin , Alexander Potapenko , Dmitry Vyukov , Juergen Gross , Stefano Stabellini , George Dunlap , Ross Lagerwall , Andrew Morton References: <20200207142652.670-1-sergey.dyasli@citrix.com> <20200207142652.670-3-sergey.dyasli@citrix.com> From: Boris Ostrovsky Autocrypt: addr=boris.ostrovsky@oracle.com; 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Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.4.1 MIME-Version: 1.0 In-Reply-To: <20200207142652.670-3-sergey.dyasli@citrix.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Content-Language: en-US X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9527 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxlogscore=999 phishscore=0 bulkscore=0 adultscore=0 malwarescore=0 suspectscore=0 mlxscore=0 spamscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002100148 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9527 signatures=668685 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 phishscore=0 mlxlogscore=999 mlxscore=0 malwarescore=0 impostorscore=0 clxscore=1011 spamscore=0 priorityscore=1501 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2002100148 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/7/20 9:26 AM, Sergey Dyasli wrote: > Introduce and use xen_kasan_* functions that are needed to properly > initialise KASAN for Xen PV domains. Disable instrumentation for files > that are used by xen_start_kernel() before kasan_early_init() could > be called. > > This enables to use Outline instrumentation for Xen PV kernels. > KASAN_INLINE and KASAN_VMALLOC options currently lead to boot crashes > and hence disabled. > > Signed-off-by: Sergey Dyasli Xen bits: Reviewed-by: Boris Ostrovsky