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definitions=2026-02-19_05,2026-02-19_03,2025-10-01_01","X-Proofpoint-Spam-Details":"rule=outbound_notspam policy=outbound score=0\n clxscore=1015 phishscore=0 adultscore=0 priorityscore=1501 spamscore=0\n impostorscore=0 suspectscore=0 bulkscore=0 malwarescore=0 lowpriorityscore=0\n classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0\n reason=mlx scancount=1 engine=8.22.0-2602130000 definitions=main-2602190194"},"content":"From: Ionut Nechita \n\nHi,\n\nThis is v2 of the patch adding owner-tracked reentrant locking for\npci_rescan_remove_lock in sriov_add_vfs() and sriov_del_vfs(), to\nserialize VF addition/removal against concurrent hotplug events\n(including platform-generated events on s390) without deadlocking\non paths that already hold the lock.\n\nv1 was tested by Benjamin Block on s390 with lockdep enabled, including\nhot-unplug events and driver unbind paths, with no splats or deadlocks.\n\nChanges in v2 (all based on review feedback from Benjamin Block):\n - Renamed from pci_lock_rescan_remove_nested() to\n pci_lock_rescan_remove_reentrant() to avoid confusion with\n mutex_lock_nested() lockdep annotations\n - Added pci_unlock_rescan_remove_reentrant(const bool locked) helper\n to avoid open-coding conditional unlock at each call site\n - Moved declarations from drivers/pci/pci.h to include/linux/pci.h\n alongside existing lock/unlock declarations\n - Simplified callers: removed negation of return value and manual\n conditional unlock in favor of the paired lock/unlock helpers\n\nLink: https://lore.kernel.org/linux-pci/\n 20260214193235.262219-5-ionut.nechita@windriver.com/ [v1]\n\nIonut Nechita (1):\n PCI/IOV: Add reentrant locking in sriov_add_vfs/sriov_del_vfs for\n complete serialization\n\n drivers/pci/iov.c | 7 +++++++\n drivers/pci/probe.c | 19 +++++++++++++++++++\n include/linux/pci.h | 2 ++\n 3 files changed, 28 insertions(+)\n\n--\n2.53.0"}