# CONFIG_ARM64_BTI: # # Branch Target Identification (part of the ARMv8.5 Extensions) # provides a mechanism to limit the set of locations to which computed # branch instructions such as BR or BLR can jump. # # To make use of BTI on CPUs that support it, say Y. # # BTI is intended to provide complementary protection to other control # flow integrity protection mechanisms, such as the Pointer # authentication mechanism provided as part of the ARMv8.3 Extensions. # For this reason, it does not make sense to enable this option without # also enabling support for pointer authentication. Thus, when # enabling this option you should also select ARM64_PTR_AUTH=y. # # Userspace binaries must also be specifically compiled to make use of # this mechanism. If you say N here or the hardware does not support # BTI, such binaries can still run, but you get no additional # enforcement of branch destinations. # # Symbol: ARM64_BTI [=y] # Type : bool # Defined at arch/arm64/Kconfig:1594 # Prompt: Branch Target Identification support # Location: # -> Kernel Features # -> ARMv8.5 architectural features # # # CONFIG_ARM64_BTI=y