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Thu, 6 Aug 2026 13:09:13 +0000 (GMT) Message-ID: <6ecb4cb8-b138-4fa8-b8d2-32cc1224460e@linux.ibm.com> Date: Thu, 6 Aug 2026 15:09:13 +0200 Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] s390/block: Enable CONTEXT_ANALYSIS To: Heiko Carstens , Jens Axboe , =?UTF-8?Q?Jan_H=C3=B6ppner?= Cc: linux-s390@vger.kernel.org, linux-block@vger.kernel.org References: <20260806130050.2057443-1-hca@linux.ibm.com> Content-Language: en-US From: Stefan Haberland In-Reply-To: <20260806130050.2057443-1-hca@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA2MDEwMSBTYWx0ZWRfX2Wi1xi/FRwAj jpdxX13flKZK7HHhDiEskND3BMwvQe8f576a5uzHbODYW/l/6U4VNrWm/lNDusRewHgA1mEeueR vAondWb7f6gY3CeKYKSXqzcA2jPi766H3/PIAqMw/SqJgA5pGYHAECxjTNbFaw2hsdfV1K0r0Qn PJSpu5nq8FK1AK+iHw0aO+RzRbiY7sgudE13wdsO4NS06x0IFUSRUGko7QC7opbRYcSnKiThS9y MwWiaZFY99scPfGmpZU86zhZmoWx0TfijPSwkd8uCNBnuXcfm4yFkwm7SjJ2nYD6VzIMiwuHNhA IXfqMjhcOmFhFn99y0TGxDlphJTlBBAO6kmEtAuX6mWUCGzc2bz6GBZq1qO6JwiuxXK4v1xvOKC i2gvlvWHfqtaK25u1OKmVFQNg1YGp5B7dJAlX86LWImyDHJlI30rjhO1vNPcAuxz7B3dBzG4YeD hngjolSCSDs5CIYSEGA== X-Authority-Analysis: v=2.4 cv=WIFPmHsR c=1 sm=1 tr=0 ts=6a74877f cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=gP54STInbiGPwzblvxgA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: 475Ag63VRHTVO2d8YSKFqAcoMML_Tpjk X-Proofpoint-ORIG-GUID: 475Ag63VRHTVO2d8YSKFqAcoMML_Tpjk X-Proofpoint-Spam-Info: AW1haW4tMjYwODA2MDEwMSBTYWx0ZWRfX/sKs+3B5ccVN RI+LNEE2aqhcKBI7vlrc94MM7eyMOm6a8htQ7++fx6yUB86GLL8Zz/TPdV3isctnH3K/Wg07lFW 9N70nTZ//Ea+dnXgWHk83RHB8+xhJxc= X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-05_06,2026-08-05_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 phishscore=0 malwarescore=0 suspectscore=0 clxscore=1015 impostorscore=0 bulkscore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608060101 Am 06.08.26 um 15:00 schrieb Heiko Carstens: > Enable CONTEXT_ANALYSYS for drivers/s390/block. > > Static code checking for acquiring and releasing locks used to be done > with sparse. That was removed with [1] and replaced with a clang based > approach [2]. The new approach requires that each subsystem needs to be > explicitly enabled for checking. > > Do that for drivers/s390/block. In order to avoid false positives due to > conditional locking, disable context analysis for specific functions of > the dasd driver. > > Disabling context analysis for specific functions keeps analysis enabled > for the rest of a file. > > Jens, if you and Stefan agree to the dasd patches, I think it would be > best if this would be routed via your tree. > > Thanks, > Heiko > Sounds good to me. Acked-by: Stefan Haberland > [1] 5b63d0ae94cc ("compiler-context-analysis: Remove Sparse support") > [2] 3269701cb256 ("compiler-context-analysis: Add infrastructure for Context Analysis with Clang") > > Heiko Carstens (2): > s390/dasd: Add __context_unsafe() attribute to various functions > s390/block: Enable CONTEXT_ANALYSIS > > drivers/s390/block/Makefile | 2 ++ > drivers/s390/block/dasd_eckd.c | 7 +++++++ > 2 files changed, 9 insertions(+) >