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arm64: Disable outling atomics

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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
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2
sys/conf/kern.mk
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@ -143,6 +143,8 @@ CFLAGS += -mgeneral-regs-only
CFLAGS += -ffixed-x18
# Build with BTI+PAC
CFLAGS += -mbranch-protection=standard
# TODO: support outline atomics
CFLAGS += -mno-outline-atomics
INLINE_LIMIT?= 8000
.endif