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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 Kitt13 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 modify19ABI-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 if31``CONFIG_COMPAT_VDSO`` is set, disabled otherwise.32 33This controls the same setting as the ``vdso32`` kernel boot34parameter.35