Messages in this thread Patch in this message | | | From | Vincenzo Frascino <> | Subject | [PATCH] arm: Fix Kexec compilation issue. | Date | Fri, 10 Jan 2020 12:31:25 +0000 |
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To perform the reserve_crashkernel() operation kexec uses SECTION_SIZE to find a memblock in a range. SECTION_SIZE is not defined for nommu systems. Trying to compile kexec in these conditions results in a build error:
linux/arch/arm/kernel/setup.c: In function ‘reserve_crashkernel’: linux/arch/arm/kernel/setup.c:1016:25: error: ‘SECTION_SIZE’ undeclared (first use in this function); did you mean ‘SECTIONS_WIDTH’? crash_size, SECTION_SIZE); ^~~~~~~~~~~~ SECTIONS_WIDTH linux/arch/arm/kernel/setup.c:1016:25: note: each undeclared identifier is reported only once for each function it appears in linux/scripts/Makefile.build:265: recipe for target 'arch/arm/kernel/setup.o' failed
Make KEXEC depend on MMU to fix the compilation issue.
Cc: Russell King <linux@armlinux.org.uk> Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> --- arch/arm/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index ba75e3661a41..bc99582bdc85 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1904,7 +1904,7 @@ config XIP_DEFLATED_DATA config KEXEC bool "Kexec system call (EXPERIMENTAL)" depends on (!SMP || PM_SLEEP_SMP) - depends on !CPU_V7M + depends on MMU select KEXEC_CORE help kexec is a system call that implements the ability to shutdown your -- 2.24.1
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