To Juan: from what I observe on how to update the linux headers, I think it can simply be in a pull just like a normal patch.
The most recent change and its pull for reference: https://lore.kernel.org/all/20220915091035.3897-1-chenyi.qi...@intel.com/ https://lore.kernel.org/all/20220926170804.453855-1-th...@redhat.com/ Changelog: v3: - Remove __linux__ macro check in util/userfaultfd.c [Juan] - Avoid using globals, merge functions [Juan] v2: - Added R-bs for Phil - Move open_mode into uffd_detect_open_mode() [Phil] - Document uffd_open() in the header file [Phil] - [Discussed with Daniel/Michal, decided to leave fd support for later] The new /dev/userfaultfd handle is superior to the system call with a better permission control and also works for a restricted seccomp environment. The new device was only introduced in v6.1 so we need a header update. Please have a look, thanks. Peter Xu (2): linux-headers: Update to v6.1 util/userfaultfd: Support /dev/userfaultfd include/standard-headers/drm/drm_fourcc.h | 34 ++++- include/standard-headers/linux/ethtool.h | 63 +++++++- include/standard-headers/linux/fuse.h | 6 +- .../linux/input-event-codes.h | 1 + include/standard-headers/linux/virtio_blk.h | 19 +++ linux-headers/asm-generic/hugetlb_encode.h | 26 ++-- linux-headers/asm-generic/mman-common.h | 2 + linux-headers/asm-mips/mman.h | 2 + linux-headers/asm-riscv/kvm.h | 4 + linux-headers/linux/kvm.h | 1 + linux-headers/linux/psci.h | 14 ++ linux-headers/linux/userfaultfd.h | 4 + linux-headers/linux/vfio.h | 142 ++++++++++++++++++ util/trace-events | 1 + util/userfaultfd.c | 32 ++++ 15 files changed, 331 insertions(+), 20 deletions(-) -- 2.37.3