6.12-stable review patch. If anyone has any objections, please let me know.
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From: Madhavan Srinivasan maddy@linux.ibm.com
commit 93bd4a80efeb521314485a06d8c21157240497bb upstream.
Recent patch fixed an old commit 'fc2a5a6161a2 ("powerpc/64s: ppc_save_regs is now needed for all 64s builds")' which is to include building of ppc_save_reg.c only when XMON and KEXEC_CORE and PPC_BOOK3S are enabled. This was valid, since ppc_save_regs was called only in replay_system_reset() of old irq.c which was under BOOK3S.
But there has been multiple refactoring of irq.c and have added call to ppc_save_regs() from __replay_soft_interrupts -> replay_soft_interrupts which is part of irq_64.c included under CONFIG_PPC64. And since ppc_save_regs is called in CRASH_DUMP path as part of crash_setup_regs in kexec.h, CONFIG_PPC32 also needs it.
So with this recent patch which enabled the building of ppc_save_regs.c caused a build break when none of these (XMON, KEXEC_CORE, BOOK3S) where enabled as part of config. Patch to enable building of ppc_save_regs.c by defaults.
Signed-off-by: Madhavan Srinivasan maddy@linux.ibm.com Link: https://patch.msgid.link/20250511041111.841158-1-maddy@linux.ibm.com Cc: Guenter Roeck linux@roeck-us.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- arch/powerpc/kernel/Makefile | 2 -- 1 file changed, 2 deletions(-)
--- a/arch/powerpc/kernel/Makefile +++ b/arch/powerpc/kernel/Makefile @@ -162,9 +162,7 @@ endif
obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM) += tm.o
-ifneq ($(CONFIG_XMON)$(CONFIG_KEXEC_CORE)$(CONFIG_PPC_BOOK3S),) obj-y += ppc_save_regs.o -endif
obj-$(CONFIG_EPAPR_PARAVIRT) += epapr_paravirt.o epapr_hcalls.o obj-$(CONFIG_KVM_GUEST) += kvm.o kvm_emul.o