On Wed, Dec 20, 2023 at 01:44:19PM +0800, Baoquan He wrote: > > arch/sh/kernel/relocate_kernel.S: Assembler messages: > > >> arch/sh/kernel/relocate_kernel.S:38: Error: invalid operands for opcode > > arch/sh/kernel/relocate_kernel.S:41: Error: invalid operands for opcode > > arch/sh/kernel/relocate_kernel.S:126: Error: invalid operands for opcode > > arch/sh/kernel/relocate_kernel.S:129: Error: invalid operands for opcode > > I reproduced this error, haven't got why and a way to fix it, will come > back later if I have fix. At a guess - after that commit ARCH_SUPPORTS_CRASH_DUMP is enough to enable CRASH_DUMP, which selects KEXEC_CORE regardless of ARCH_SUPPORTS_KEXEC. And on sh you have the former selected on any UP build, while the latter - only on MMU ones (i.e. not SH2).
