conf: Enable BTI checking in the arm64 kernel

To ensure new code has BTI support make it an error to not have the
BTI ELF note when linking the kernel and kernel modules.

Reviewed by:	kib, emaste
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D45469

This commit is contained in:

Andrew Turner

2024-08-19 13:59:49 +01:00

parent 12a6257a96

commit 43e8849bc2

1 changed files with 3 additions and 0 deletions

									
										sys/conf/kern.mk
									
		+3
		
												View File
												
					@@ -143,6 +143,9 @@ CFLAGS += -mgeneral-regs-only

					CFLAGS += -ffixed-x18

					CFLAGS += -ffixed-x18

					# Build with BTI+PAC

					# Build with BTI+PAC

					CFLAGS += -mbranch-protection=standard

					CFLAGS += -mbranch-protection=standard

					.if ${LINKER_TYPE} == "lld"

					LDFLAGS += -Wl,-zbti-report=error

					.endif

					# TODO: support outline atomics

					# TODO: support outline atomics

					CFLAGS += -mno-outline-atomics

					CFLAGS += -mno-outline-atomics

					INLINE_LIMIT?=	8000

					INLINE_LIMIT?=	8000