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Thu, 23 Jul 2026 17:47:54 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav05.fra02v.mail.ibm.com (Postfix) with SMTP; Thu, 23 Jul 2026 17:47:54 +0000 (GMT) Received: by tuxmaker.boeblingen.de.ibm.com (Postfix, from userid 4958) id 9DA9B1627E5; Thu, 23 Jul 2026 19:47:54 +0200 (CEST) From: Eric Farman To: linux-s390@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Matthew Rosato , Halil Pasic , Christian Borntraeger , Eric Farman Subject: [PATCH v3 0/8] s390/vfio_ccw fixes Date: Thu, 23 Jul 2026 19:47:43 +0200 Message-ID: <20260723174751.1180334-1-farman@linux.ibm.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzIzMDE3MyBTYWx0ZWRfX8OqLE4A5HLiZ WDBlw9cb6Ev4164/pnMVv1Jswlwkq8YGOsvNYgeYb52r4GeWjhCCBufwZntlzOuRb1pwNdujZlO Wg3S7YYtBXIiFAuPzu7vTwdLWpExulU2n2sM83Q5ZF4Ui2A5hmwPYLwpRex2jobJh48f1vGhPs9 f0faWpvq7JlO0+7mkcLSF6ZTIb8f09bTPRVBex+cRb/0O91p7qnyKBAussTP/aVTRwGWyzvcSPS qrAYmAlun4c9gDSO7b5fIjmpxx5+vE59ozKRoAwyIU+57hU+T+zd0Pw+L8Y8nRdcI7yxjIWG2EK JHokNBbfXMn841UBevRnzf9H2xg733jHVsM+FtkEIVaQLWqAFyWsDnENVcB8NIPtUgNdzalf3gW MIOuodOcxyIcrBkAMgoUFB7cKkxR+MpPigC2PcSm/BfJGPimyI8QKMd/kNM5aotahWt6QrQ/4kx WV0exNOL/Gme+/p227Q== X-Authority-Analysis: v=2.4 cv=F7ZnsKhN c=1 sm=1 tr=0 ts=6a6253cf cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=-W5gkg908v1zLjHEBtAA:9 X-Proofpoint-ORIG-GUID: 39436r4qHGeI3_ajeZj3O9Q1U6XV8SfN X-Proofpoint-Spam-Info: AW1haW4tMjYwNzIzMDE3MyBTYWx0ZWRfXwW/UFkmEJN4t itgQ5cD2BmOYcODFzo4F6lZwrOa+n+smmcb5eI81GL3BqQVb3fjgQi4EDwUV0SWQLz4pe/12Tz7 Xm0wJrWq8McvrmZ9J9/7a3aUBioj1eo= X-Proofpoint-GUID: 39436r4qHGeI3_ajeZj3O9Q1U6XV8SfN X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-07-23_05,2026-07-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 bulkscore=0 clxscore=1015 priorityscore=1501 impostorscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607230173 This series addresses some pre-existing issues found in the s390 vfio_ccw (DASD passthrough) driver. v1: https://lore.kernel.org/r/20260714232208.1683788-1-farman@linux.ibm.c= om/ v2: https://lore.kernel.org/r/20260720201931.976660-1-farman@linux.ibm.co= m/ v2->v3: (Patches 1-4 are unchanged except for these first two items) - [FA] Added r-b to patch 1 (thank you!) - [sashiko] Fixed typo on error return from ccwchain_handle_ccw() - [NEW][sashiko] Fixed the idal size calculated by get_guest_idal() - [sashiko] Expanded clamps across region types - [sashiko] Replace cp_lock with cp_mutex, and rework intersections with the existing sch->lock and private->io_mutex Eric Farman (8): s390/vfio_ccw: free all memory if cp_init() fails s390/vfio_ccw: limit the number of channel program segments s390/vfio_ccw: fix out of bounds check on CCW array s390/vfio_ccw: ensure first IDAW remains constant s390/vfio_ccw: calculate idal length based on idaw type s390/vfio_ccw: ensure index for read/write regions are within range s390/vfio_ccw: implement a channel program mutex s390/vfio_ccw: implement a crw lock drivers/s390/cio/vfio_ccw_async.c | 4 ++ drivers/s390/cio/vfio_ccw_chp.c | 19 +++++++--- drivers/s390/cio/vfio_ccw_cp.c | 59 ++++++++++++++++++++++++----- drivers/s390/cio/vfio_ccw_cp.h | 7 ++++ drivers/s390/cio/vfio_ccw_drv.c | 14 ++++++- drivers/s390/cio/vfio_ccw_fsm.c | 22 +++++++---- drivers/s390/cio/vfio_ccw_ops.c | 20 +++++++--- drivers/s390/cio/vfio_ccw_private.h | 5 +++ 8 files changed, 122 insertions(+), 28 deletions(-) --=20 2.53.0