ARM: 8456/1: code patching only works on MMU (437682ee) · Commits · 戴 / test

There is no __set_fixmap implementation for NOMMU kernels, so we cannot link the kernel/patch.c file: arch/arm/kernel/built-in.o: In function `patch_map': :(.text+0x257e): undefined reference to `__set_fixmap' arch/arm/kernel/built-in.o: In function `__patch_text_real': :(.text+0x2618): undefined reference to `__set_fixmap' :(.text+0x262e): undefined reference to `__set_fixmap' To work around that, this adds dependencies for all features that rely on code patching. Signed-off-by:

Arnd Bergmann <arnd@arndb.de> Signed-off-by:

Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/Kconfig

+3 −3

Original line number	Diff line number	Diff line
		@@ -33,8 +33,8 @@ config ARM
		select HARDIRQS_SW_RESEND
		select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
		select HAVE_ARCH_BITREVERSE if (CPU_32v7M \|\| CPU_32v7) && !CPU_32v6
		select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32
		select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32
		select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
		select HAVE_ARCH_KGDB if !CPU_ENDIAN_BE32 && MMU
		select HAVE_ARCH_SECCOMP_FILTER if (AEABI && !OABI_COMPAT)
		select HAVE_ARCH_TRACEHOOK
		select HAVE_BPF_JIT
		@@ -45,7 +45,7 @@ config ARM
		select HAVE_DMA_API_DEBUG
		select HAVE_DMA_ATTRS
		select HAVE_DMA_CONTIGUOUS if MMU
		select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32
		select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) && !CPU_ENDIAN_BE32 && MMU
		select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 \|\| CPU_V6K \|\| CPU_V7) && MMU
		select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL)
		select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL)

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