Re: [PATCH v2 25/40] mm/vma: enforce that only kernel-owned mappings may set VMA_IO_BIT
From: sashiko-bot@kernel.org
Date: 2026-09-14 22:18:36
Also in:
bpf, dri-devel, kvm, kvmarm, linux-rdma, linux-s390, linux-scsi, linux-trace-kernel, selinux
It makes no sense for a mapping whose contents the kernel does not own to specify that the range is MMIO. Prior to this patch, all in-tree drivers which did so have been updated such that they are marked as kernel-owned. The check WARNs and fails the mmap for any out-of-tree driver that still sets VMA_IO_BIT without a kernel mapping. No functional change intended for in-tree code. Signed-off-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great! -- Sashiko AI review · https://sashiko.dev/#/patchset/20260914-b4-mmap-prepare-vma-flag-sanify-v2-0-7d9781ed5361@kernel.org?part=25