Hi Geert-san, > From: Geert Uytterhoeven, Sent: Wednesday, December 26, 2018 8:06 PM > > I have pushed renesas-drivers-2018-12-26-v4.20 to > https://git.kernel.org/cgit/linux/kernel/git/geert/renesas-drivers.git > > This tree is meant to ease development of platform support and drivers > for Renesas ARM SoCs. It is created by merging (a) the for-next branches > of various subsystem trees and (b) branches with driver code submitted > or planned for submission to maintainers into the development branch of > Simon Horman's renesas.git tree. > > Today's version is based on renesas-devel-20181220-v4.20-rc7. I built this version with "gcc version 5.2.1 20151005 (Linaro GCC 5.2-2015.11-1)", and then the following build error happened: AS arch/arm64/kernel/head.o /home/shimoda/development/renesas/renesas-drivers/arch/arm64/kernel/head.S: Assembler messages: /home/shimoda/development/renesas/renesas-drivers/arch/arm64/kernel/head.S:824: Error: missing ')' /home/shimoda/development/renesas/renesas-drivers/arch/arm64/kernel/head.S:824: Error: missing ')' /home/shimoda/development/renesas/renesas-drivers/arch/arm64/kernel/head.S:824: Error: missing ')' /home/shimoda/development/renesas/renesas-drivers/arch/arm64/kernel/head.S:824: Error: unexpected characters following instruction at operand 2 -- `mov x2,#(2)|(2U<<(8))' This error seems to cause the commit 66f16a24512f ("arm64: smp: Rework early feature mismatched detection"). And if I modified the code as following, the build error disappeared: --- diff --git a/arch/arm64/include/asm/smp.h b/arch/arm64/include/asm/smp.h index 18955618..e9b9cee 100644 --- a/arch/arm64/include/asm/smp.h +++ b/arch/arm64/include/asm/smp.h @@ -30,7 +30,7 @@ #define CPU_PANIC_KERNEL (3) #define CPU_STUCK_REASON_52_BIT_VA (1U << CPU_STUCK_REASON_SHIFT) -#define CPU_STUCK_REASON_NO_GRAN (2U << CPU_STUCK_REASON_SHIFT) +#define CPU_STUCK_REASON_NO_GRAN (UL(2) << CPU_STUCK_REASON_SHIFT) #ifndef __ASSEMBLY__ --- So, I think we have to fix this, but what do you think? # I don't know why the line 812 doesn't cause the build error, # but the line 824 causes the build error though... Best regards, Yoshihiro Shimoda
