1.. SPDX-License-Identifier: GPL-2.0+ 2 3================================ 4Documentation for /proc/sys/abi/ 5================================ 6 7.. See scripts/check-sysctl-docs to keep this up to date: 8.. scripts/check-sysctl-docs -vtable="abi" \ 9.. Documentation/admin-guide/sysctl/abi.rst \ 10.. $(git grep -l register_sysctl_) 11 12Copyright (c) 2020, Stephen Kitt 13 14For general info, see Documentation/admin-guide/sysctl/index.rst. 15 16------------------------------------------------------------------------------ 17 18The files in ``/proc/sys/abi`` can be used to see and modify 19ABI-related settings. 20 21Currently, these files might (depending on your configuration) 22show up in ``/proc/sys/kernel``: 23 24.. contents:: :local: 25 26vsyscall32 (x86) 27================ 28 29Determines whether the kernels maps a vDSO page into 32-bit processes; 30can be set to 1 to enable, or 0 to disable. Defaults to enabled if 31``CONFIG_COMPAT_VDSO`` is set, disabled otherwise. 32 33This controls the same setting as the ``vdso32`` kernel boot 34parameter. 35