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Date:   Thu, 2 Nov 2017 17:49:36 +1100
From:   Stephen Rothwell <>
To:     Michael Ellerman <>,
        Benjamin Herrenschmidt <>,
        PowerPC <>
Cc:     Linux-Next Mailing List <>,
        Linux Kernel Mailing List <>,
        Nicholas Piggin <>
Subject: linux-next: build failure after merge of the powerpc tree

Hi all,

After merging the powerpc tree, today's linux-next build (powerpc64
allnoconfig) failed like this:

arch/powerpc/kernel/irq.o: In function `.replay_system_reset':
irq.c:(.text+0x10): undefined reference to `.ppc_save_regs'

Caused by commit

  78adf6c214f0 ("powerpc/64s: Implement system reset idle wakeup reason")

I have applied the following fix patch:

From: Stephen Rothwell <>
Date: Thu, 2 Nov 2017 17:45:18 +1100
Subject: [PATCH] powerpc/64s: ppc_save_regs is now needed for all 64s builds

Fixes: 78adf6c214f0 ("powerpc/64s: Implement system reset idle wakeup reason")
Signed-off-by: Stephen Rothwell <>
 arch/powerpc/kernel/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/Makefile b/arch/powerpc/kernel/Makefile
index 91960f83039c..34b6e729f38c 100644
--- a/arch/powerpc/kernel/Makefile
+++ b/arch/powerpc/kernel/Makefile
@@ -128,7 +128,7 @@ obj64-$(CONFIG_PPC_TRANSACTIONAL_MEM)	+= tm.o
 obj-$(CONFIG_PPC64)		+= $(obj64-y)
 obj-$(CONFIG_PPC32)		+= $(obj32-y)
 obj-y				+= ppc_save_regs.o

Stephen Rothwell

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