From: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> Current nommu_virt_defconfig can't compile: In file included from arch/riscv/kernel/crash_core.c:3: arch/riscv/kernel/crash_core.c: In function 'arch_crash_save_vmcoreinfo': arch/riscv/kernel/crash_core.c:8:27: error: 'VA_BITS' undeclared (first use in this function) 8 | VMCOREINFO_NUMBER(VA_BITS); | ^~~~~~~ Add MMU dependency for KEXEC_FILE. Fixes: 6261586e0c91 ("RISC-V: Add kexec_file support") Reported-by: Conor Dooley <conor@xxxxxxxxxx> Reported-by: kernel test robot <lkp@xxxxxxxxx> Signed-off-by: Guo Ren <guoren@xxxxxxxxxx> Signed-off-by: Guo Ren <guoren@xxxxxxxxxxxxxxxxx> --- arch/riscv/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index ef8d66de5f38..91319044fd13 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -496,7 +496,7 @@ config KEXEC_FILE select KEXEC_CORE select KEXEC_ELF select HAVE_IMA_KEXEC if IMA - depends on 64BIT + depends on 64BIT && MMU help This is new version of kexec system call. This system call is file based and takes file descriptors as system call argument -- 2.36.1