CONFIG_ARCH_HAS_CURRENT_STACK_POINTER (not configurable)
configname: CONFIG_ARCH_HAS_CURRENT_STACK_POINTER
Linux Kernel Configuration
└─>Memory Management options
└─>ARCH_HAS_CURRENT_STACK_POINTER
In linux kernel since version 5.2 (release Date: 2019-07-07)
In support of HARDENED_USERCOPY performing stack variable lifetime
checking, an architecture-agnostic way to find the stack pointer
is needed. Once an architecture defines an unsigned long global
register alias named "current_stack_pointer", this config can be
selected.
checking, an architecture-agnostic way to find the stack pointer
is needed. Once an architecture defines an unsigned long global
register alias named "current_stack_pointer", this config can be
selected.