arm64: Disable outling atomics

We don't have the symbols for this. The virtio randon number driver
uses a C11 atomic operation. With inline atomics this is translated to
an Armv8.0 atomic operation, with outling atomics this becomes a
function call to a handler. As we don't have the needed function the
kernel fails to link.

Fix by disabling outline atomics for now.

Reviewed by:	brooks, imp
Sponsored by:	Arm Ltd
Differential Revision:	https://reviews.freebsd.org/D45301

This commit is contained in:

Andrew Turner

2024-06-04 13:45:00 +01:00

parent 8d7331e62a

commit 361da40536

1 changed files with 2 additions and 0 deletions

									
										sys/conf/kern.mk
									
		+2
		
												View File
												
					@@ -143,6 +143,8 @@ 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

					# TODO: support outline atomics

					CFLAGS += -mno-outline-atomics

					INLINE_LIMIT?=	8000

					INLINE_LIMIT?=	8000

					.endif

					.endif