[SRU][Zesty][PATCH 2/3] powerpc/mce: Move 64-bit machine check code into mce.c

[Joseph Salisbury]

From: Michael Ellerman <mpe at ellerman.id.au>

BugLink: http://bugs.launchpad.net/bugs/1721070

We already have mce.c which is built for 64bit and contains other parts
of the machine check code, so move these bits in there too.

Signed-off-by: Michael Ellerman <mpe at ellerman.id.au>
(back ported rom commit ccd3cd361341b71ae2afa596f6b470fcb32a916e)
Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>
---
 arch/powerpc/include/asm/reg.h |  1 +
 arch/powerpc/kernel/mce.c      | 33 +++++++++++++++++++++++++++++++++
 arch/powerpc/kernel/traps.c    | 35 -----------------------------------
 3 files changed, 34 insertions(+), 35 deletions(-)

diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
index 463dbf5..ad76a50 100644
--- a/arch/powerpc/include/asm/reg.h
+++ b/arch/powerpc/include/asm/reg.h
@@ -1225,6 +1225,7 @@
 #define PVR_POWER8E	0x004B
 #define PVR_POWER8NVL	0x004C
 #define PVR_POWER8	0x004D
+#define PVR_POWER9	0x004E
 #define PVR_BE		0x0070
 #define PVR_PA6T	0x0090
 
diff --git a/arch/powerpc/kernel/mce.c b/arch/powerpc/kernel/mce.c
index a1475e6..5a2a020 100644
--- a/arch/powerpc/kernel/mce.c
+++ b/arch/powerpc/kernel/mce.c
@@ -22,11 +22,14 @@
 #undef DEBUG
 #define pr_fmt(fmt) "mce: " fmt
 
+#include <linux/hardirq.h>
 #include <linux/types.h>
 #include <linux/ptrace.h>
 #include <linux/percpu.h>
 #include <linux/export.h>
 #include <linux/irq_work.h>
+
+#include <asm/machdep.h>
 #include <asm/mce.h>
 
 static DEFINE_PER_CPU(int, mce_nest_count);
@@ -432,3 +435,33 @@ uint64_t get_mce_fault_addr(struct machine_check_event *evt)
 	return 0;
 }
 EXPORT_SYMBOL(get_mce_fault_addr);
+
+/*
+ * This function is called in real mode. Strictly no printk's please.
+ *
+ * regs->nip and regs->msr contains srr0 and ssr1.
+ */
+long machine_check_early(struct pt_regs *regs)
+{
+	long handled = 0;
+
+	__this_cpu_inc(irq_stat.mce_exceptions);
+
+	if (cur_cpu_spec && cur_cpu_spec->machine_check_early)
+		handled = cur_cpu_spec->machine_check_early(regs);
+	return handled;
+}
+
+long hmi_exception_realmode(struct pt_regs *regs)
+{
+	__this_cpu_inc(irq_stat.hmi_exceptions);
+
+	wait_for_subcore_guest_exit();
+
+	if (ppc_md.hmi_exception_early)
+		ppc_md.hmi_exception_early(regs);
+
+	wait_for_tb_resync();
+
+	return 0;
+}
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index e3655d7..f984ace 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -293,41 +293,6 @@ void system_reset_exception(struct pt_regs *regs)
 	/* What should we do here? We could issue a shutdown or hard reset. */
 }
 
-#ifdef CONFIG_PPC64
-/*
- * This function is called in real mode. Strictly no printk's please.
- *
- * regs->nip and regs->msr contains srr0 and ssr1.
- */
-long machine_check_early(struct pt_regs *regs)
-{
-	long handled = 0;
-
-	__this_cpu_inc(irq_stat.mce_exceptions);
-
-	add_taint(TAINT_MACHINE_CHECK, LOCKDEP_NOW_UNRELIABLE);
-
-	if (cur_cpu_spec && cur_cpu_spec->machine_check_early)
-		handled = cur_cpu_spec->machine_check_early(regs);
-	return handled;
-}
-
-long hmi_exception_realmode(struct pt_regs *regs)
-{
-	__this_cpu_inc(irq_stat.hmi_exceptions);
-
-	wait_for_subcore_guest_exit();
-
-	if (ppc_md.hmi_exception_early)
-		ppc_md.hmi_exception_early(regs);
-
-	wait_for_tb_resync();
-
-	return 0;
-}
-
-#endif
-
 /*
  * I/O accesses can cause machine checks on powermacs.
  * Check if the NIP corresponds to the address of a sync
-- 
2.7.4