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Tue, 11 Aug 2026 17:14:26 +0000 (GMT) Received: from [9.61.146.44] (unknown [9.61.146.44]) by smtpav03.dal12v.mail.ibm.com (Postfix) with ESMTP; Tue, 11 Aug 2026 17:14:26 +0000 (GMT) Message-ID: Date: Tue, 11 Aug 2026 13:14:26 -0400 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 5/8] s390/vfio-ap: Fix control domain removal in vfio_ap_mdev_cfg_remove To: Anthony Krowiak , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Cc: jjherne@linux.ibm.com, borntraeger@de.ibm.com, pasic@linux.ibm.com, alex@shazbot.org, kwankhede@nvidia.com, fiuczy@linux.ibm.com, pbonzini@redhat.com, frankja@linux.ibm.com, imbrenda@linux.ibm.com, agordeev@linux.ibm.com, hca@linux.ibm.com, gor@linux.ibm.com, stable@vger.kernel.org References: <20260810192257.1208410-1-akrowiak@linux.ibm.com> <20260810192257.1208410-6-akrowiak@linux.ibm.com> From: Matthew Rosato Content-Language: en-US In-Reply-To: <20260810192257.1208410-6-akrowiak@linux.ibm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODExMDE0MiBTYWx0ZWRfX1PSVpEZdsRii 2JGdDt0JcQBpj7J46XQQtdtCnmhuqMoId2aWppS1qIJkLprjgjMifcD0HTxXRRQ3aEy9B9rk3kw bCUCTzCmfY2Q2SvjQycYIaI0tRX2FQBLp0++4ivlVzQ50bIYsHEKvfCpF9U+f+GNy4j7G2s7Nwb czJFVHsBaELv+O/hD3oCXHYxpU7Y0XnxYVRMRk89GNIY+jot2gHcNxbdkkeTnH/hrajuywZHgU6 68huRj1O3gPOD5KCesA0jdnM4lBeAavW+8h+F/Z5BtR/ZB1DaHUM9/I+BMNm7NOZ9WkWmSZOBag YHnmNV8RVYo6c08BMn3FQDXxiH8n8sVwuL2izpXASn/nBBKgbtTpPnzefRfKoVZKWLWUGImz96S SxfqyFH0OHYOo7flK6MqmO1B4huLihe3R58xR+5CRW8jZZqfbLZniouFSevAOeAeua+wTt2y3yO KxZsy+KJr2pWCc5g19w== X-Proofpoint-Spam-Info: AW1haW4tMjYwODExMDE0MiBTYWx0ZWRfX3wxhe6S/WerO bfDEUzrf6XFkOLksuAen3wzjufizgYkojbKLZJfBGvgtpKPDfBxs4RfFaPkEiHopj9lgIQGDSwM r5a/c4qlg3v8INwH0dtdmvPYBH3L8Es= X-Authority-Analysis: v=2.4 cv=RqD16imK c=1 sm=1 tr=0 ts=6a7b5875 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=IkcTkHD0fZMA:10 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=uAbxVGIbfxUO_5tXvNgY:22 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=w3fCFjnWj7rHUh7R76wA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-GUID: JvU9W5NSQro56y8TYiYqogMipqog6yPH X-Proofpoint-ORIG-GUID: JvU9W5NSQro56y8TYiYqogMipqog6yPH 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=2026-08-11_04,2026-08-10_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 priorityscore=1501 suspectscore=0 lowpriorityscore=0 clxscore=1015 adultscore=0 bulkscore=0 malwarescore=0 impostorscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608110142 On 8/10/26 3:22 PM, Anthony Krowiak wrote: > The vfio_ap_config_remove function uses the bitmap_andnot function to clear > bits from the matrix_mdev->matrix.adm bitmap (specifies the control domains > assigned to the mdev). This prevents the explicitly unplugged control > domains from being removed the KVM guest. The bitmap_and function is used > instead. > > Fixes: eeb386aeb5b7c ("s390/vfio-ap: handle config changed and scan complete notification") > Cc: stable@vger.kernel.org > Signed-off-by: Anthony Krowiak Reviewed-by: Matthew Rosato