1 files changed, 16 insertions, 11 deletions

diff --git a/meta/conf/machine/include/arm/arch-arm64.inc b/meta/conf/machine/include/arm/arch-arm64.inc
index eab3323ec6..832d0000ac 100644
--- a/meta/conf/machine/include/arm/arch-arm64.inc
+++ b/meta/conf/machine/include/arm/arch-arm64.inc
@@ -9,17 +9,17 @@ MACHINEOVERRIDES =. "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', 'aarch64:'
 
 # Little Endian base configs
 AVAILTUNES += "aarch64 aarch64_be"
-ARMPKGARCH_tune-aarch64 ?= "aarch64"
-ARMPKGARCH_tune-aarch64_be ?= "aarch64"
-TUNE_FEATURES_tune-aarch64 = "aarch64"
-TUNE_FEATURES_tune-aarch64_be = "${TUNE_FEATURES_tune-aarch64} bigendian"
-TUNE_PKGARCH_64_tune-aarch64 = "aarch64"
-TUNE_PKGARCH_64_tune-aarch64_be = "aarch64_be"
-BASE_LIB_tune-aarch64 = "lib64"
-BASE_LIB_tune-aarch64_be = "lib64"
-
-PACKAGE_EXTRA_ARCHS_tune-aarch64 = "aarch64"
-PACKAGE_EXTRA_ARCHS_tune-aarch64_be = "aarch64_be"
+ARMPKGARCH:tune-aarch64 ?= "aarch64"
+ARMPKGARCH:tune-aarch64_be ?= "aarch64"
+TUNE_FEATURES:tune-aarch64 = "aarch64"
+TUNE_FEATURES:tune-aarch64_be = "${TUNE_FEATURES:tune-aarch64} bigendian"
+TUNE_PKGARCH_64:tune-aarch64 = "aarch64"
+TUNE_PKGARCH_64:tune-aarch64_be = "aarch64_be"
+BASE_LIB:tune-aarch64 = "lib64"
+BASE_LIB:tune-aarch64_be = "lib64"
+
+PACKAGE_EXTRA_ARCHS:tune-aarch64 = "aarch64"
+PACKAGE_EXTRA_ARCHS:tune-aarch64_be = "aarch64_be"
 
 ARMPKGSFX_ENDIAN_64 = "${@bb.utils.contains('TUNE_FEATURES', 'bigendian', '_be', '', d)}"
 TUNE_ARCH_64 = "aarch64${ARMPKGSFX_ENDIAN_64}"
@@ -37,3 +37,8 @@ TUNE_ARCH = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TUNE_ARCH_64}',
 TUNE_PKGARCH = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TUNE_PKGARCH_64}', '${TUNE_PKGARCH_32}', d)}"
 ABIEXTENSION = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${ABIEXTENSION_64}', '${ABIEXTENSION_32}', d)}"
 TARGET_FPU = "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', '${TARGET_FPU_64}', '${TARGET_FPU_32}', d)}"
+
+# Emit branch protection (PAC/BTI) instructions.  On hardware that doesn't
+# support these they're meaningless NOP instructions, so there's very little
+# reason not to.
+TUNE_CCARGS .= "${@bb.utils.contains('TUNE_FEATURES', 'aarch64', ' -mbranch-protection=standard', '', d)}"