3.16.61-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Michael Jeanson <mjeanson@xxxxxxxxxxxx> commit 69a8405999aa1c489de4b8d349468f0c2b83f093 upstream. In binutils 2.26 a new opcode for the "wait" instruction was added for the POWER9 and has precedence over the one specific to the e500mc. Commit ebf714ff3756 ("powerpc/e500mc: Add support for the wait instruction in e500_idle") uses this instruction specifically on the e500mc to work around an erratum. This results in an invalid instruction in idle_e500 when we build for the e500mc on bintutils >= 2.26 with the default assembler machine type. Since multiplatform between e500 and non-e500 is not supported, set the assembler machine type globaly when CONFIG_PPC_E500MC=y. Signed-off-by: Michael Jeanson <mjeanson@xxxxxxxxxxxx> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> CC: Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx> CC: Paul Mackerras <paulus@xxxxxxxxx> CC: Michael Ellerman <mpe@xxxxxxxxxxxxxx> CC: Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx> CC: Vakul Garg <vakul.garg@xxxxxxx> CC: Scott Wood <swood@xxxxxxxxxx> CC: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxxxx> CC: linuxppc-dev@xxxxxxxxxxxxxxxx CC: linux-kernel@xxxxxxxxxxxxxxx Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx> --- arch/powerpc/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/arch/powerpc/Makefile +++ b/arch/powerpc/Makefile @@ -205,6 +205,7 @@ endif cpu-as-$(CONFIG_4xx) += -Wa,-m405 cpu-as-$(CONFIG_ALTIVEC) += -Wa,-maltivec cpu-as-$(CONFIG_E200) += -Wa,-me200 +cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc) KBUILD_AFLAGS += $(cpu-as-y) KBUILD_CFLAGS += $(cpu-as-y)