Date: Wed, 5 Jun 2024 09:29:11 GMT From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 361da40536d7 - main - arm64: Disable outling atomics Message-ID: <202406050929.4559TBSV027226@gitrepo.freebsd.org>
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The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=361da40536d7f6fc6c06d54b261c299d170ccf2f commit 361da40536d7f6fc6c06d54b261c299d170ccf2f Author: Andrew Turner <andrew@FreeBSD.org> AuthorDate: 2024-06-04 12:45:00 +0000 Commit: Andrew Turner <andrew@FreeBSD.org> CommitDate: 2024-06-05 09:23:40 +0000 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 --- sys/conf/kern.mk | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sys/conf/kern.mk b/sys/conf/kern.mk index d51aa1f1dfa9..106f09d80ac1 100644 --- a/sys/conf/kern.mk +++ b/sys/conf/kern.mk @@ -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
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