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authorMark Kettenis <kettenis@cvs.openbsd.org>2023-04-09 19:48:38 +0000
committerMark Kettenis <kettenis@cvs.openbsd.org>2023-04-09 19:48:38 +0000
commit6c5c2ff6b963e0fa73cd13d8c4a4eb9ca4559eaa (patch)
tree57f9ebcf98429226215ffbd74b5b6d7ee947a01c /sys/arch/arm64/conf
parent8b4f54a41d2afcc8169b3830081f4599ae0dce2e (diff)
So clang 13 miscompiles dev/usb/umass_scsi.c with the combination if -Oz
and -mbranch-protection=bti. So turn off the BTI protection in ramdisk kernels for now. ok deraadt@, miod@, phessler@
Diffstat (limited to 'sys/arch/arm64/conf')
-rw-r--r--sys/arch/arm64/conf/Makefile.arm647
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/arch/arm64/conf/Makefile.arm64 b/sys/arch/arm64/conf/Makefile.arm64
index 6bd73a674f6..1719e3d045d 100644
--- a/sys/arch/arm64/conf/Makefile.arm64
+++ b/sys/arch/arm64/conf/Makefile.arm64
@@ -1,4 +1,4 @@
-# $OpenBSD: Makefile.arm64,v 1.45 2023/03/27 19:02:47 kettenis Exp $
+# $OpenBSD: Makefile.arm64,v 1.46 2023/04/09 19:48:37 kettenis Exp $
# For instructions on building kernels consult the config(8) and options(4)
# manual pages.
@@ -61,7 +61,7 @@ CWARNFLAGS+= -Wno-deprecated-non-prototype -Wno-unknown-warning-option
CMACHFLAGS= -march=armv8-a+nofp+nosimd \
-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer \
- -ffixed-x18 -mbranch-protection=bti
+ -ffixed-x18
CMACHFLAGS+= -ffreestanding ${NOPIE_FLAGS}
SORTR= sort -R
.if ${IDENT:M-DNO_PROPOLICE}
@@ -70,6 +70,9 @@ CMACHFLAGS+= -fno-stack-protector
.if ${IDENT:M-DSMALL_KERNEL}
SORTR= cat
COPTIMIZE?= -Oz
+CMACHFLAGS+= -mbranch-protection=none
+.else
+CMACHFLAGS+= -mbranch-protection=bti
.endif
DEBUG?= -g