I feel we need something like this to avoid the failure of compiling
when build with ARM64_ILP32(which will select COMPAT) and
ARMV8_DEPRECATED (which depends on the opcodes.o).
>From f8b8ffdb449491ecf8ba465238bbdb4625a74ac0 Mon Sep 17 00:00:00 2001
From: Bamvor Jian Zhang <bamvor.zhangj...@linaro.org>
Date: Mon, 28 Dec 2015 12:57:46 +0800
Subject: [PATCH] arm64: compat: fix wrong dependency of ARMV8_DEPRECATED
When compile with ARM64_ILP32, ARMV8_DEPRECATED will be selected due
to the dependency of COMPAT. It leads to the following error:
LD init/built-in.o
arch/arm64/kernel/built-in.o: In function `cp15barrier_handler':
/home/bamvor/works/source/kernel/linux_ilp32/arch/arm64/kernel/armv8_deprecated.c:467:
undefined reference to `arm_check_condition'
/home/bamvor/works/source/kernel/linux_ilp32/arch/arm64/kernel/armv8_deprecated.c:467:
undefined reference to `arm_check_condition'
arch/arm64/kernel/built-in.o: In function `swp_handler':
/home/bamvor/works/source/kernel/linux_ilp32/arch/arm64/kernel/armv8_deprecated.c:386:
undefined reference to `arm_check_condition'
/home/bamvor/works/source/kernel/linux_ilp32/arch/arm64/kernel/armv8_deprecated.c:386:
undefined reference to `arm_check_condition'
Makefile:927: recipe for target 'vmlinux' failed
make: *** [vmlinux] Error 1
This patch fix this by updating the dependency from COMPAT to
AARCH32_EL0.
Signed-off-by: Bamvor Jian Zhang <bamvor.zhangj...@linaro.org>
---
arch/arm64/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index deec37a..e52fd03 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -509,7 +509,7 @@ config FORCE_MAX_ZONEORDER
menuconfig ARMV8_DEPRECATED
bool "Emulate deprecated/obsolete ARMv8 instructions"
- depends on COMPAT
+ depends on AARCH32_EL0
help
Legacy software support may require certain instructions
that have been deprecated or obsoleted in the architecture.
--
2.1.4
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