1 files changed, 13 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/traps.c b/arch/powerpc/kernel/traps.c
index 3fca22276bb1..9f6852322e59 100644
--- a/arch/powerpc/kernel/traps.c
+++ b/arch/powerpc/kernel/traps.c
@@ -823,7 +823,19 @@ int machine_check_generic(struct pt_regs *regs)
 void machine_check_exception(struct pt_regs *regs)
 {
 	int recover = 0;
-	bool nested = in_nmi();
+	bool nested;
+
+	/*
+	 * BOOK3S_64 does not call this handler as a non-maskable interrupt
+	 * (it uses its own early real-mode handler to handle the MCE proper
+	 * and then raises irq_work to call this handler when interrupts are
+	 * enabled). Set nested = true for this case, which just makes it avoid
+	 * the nmi_enter/exit.
+	 */
+	if (IS_ENABLED(CONFIG_PPC_BOOK3S_64) || in_nmi())
+		nested = true;
+	else
+		nested = false;
 	if (!nested)
 		nmi_enter();