CONFIG_UNWIND_PATCH_PAC_INTO_SCS is not available for thedefaultarchitecture x86.
Result is shown for architecture arm64

Enable shadow call stack dynamically using code patching

modulename: patch-scs.ko

configname: CONFIG_UNWIND_PATCH_PAC_INTO_SCS

Linux Kernel Configuration
└─>Kernel Features
└─>Enable shadow call stack dynamically using code patching
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
source code:
arch/arm64/kernel/patch-scs.c

depends
CONFIG_ARM64_PTR_AUTH_KERNEL
CONFIG_CC_HAS_BRANCH_PROT_PAC_RET
CONFIG_CC_IS_CLANG
CONFIG_CLANG_VERSIONCONFIG_150000
CONFIG_SHADOW_CALL_STACK