From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 7 Apr 2024 20:49:45 +0200
Subject: Adding upstream version 6.1.76.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 arch/sparc/power/hibernate.c | 40 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 arch/sparc/power/hibernate.c

(limited to 'arch/sparc/power/hibernate.c')

diff --git a/arch/sparc/power/hibernate.c b/arch/sparc/power/hibernate.c
new file mode 100644
index 000000000..47b06f4af
--- /dev/null
+++ b/arch/sparc/power/hibernate.c
@@ -0,0 +1,40 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * hibernate.c:  Hibernaton support specific for sparc64.
+ *
+ * Copyright (C) 2013 Kirill V Tkhai (tkhai@yandex.ru)
+ */
+
+#include <linux/mm.h>
+
+#include <asm/hibernate.h>
+#include <asm/visasm.h>
+#include <asm/page.h>
+#include <asm/sections.h>
+#include <asm/tlb.h>
+
+struct saved_context saved_context;
+
+/*
+ *	pfn_is_nosave - check if given pfn is in the 'nosave' section
+ */
+
+int pfn_is_nosave(unsigned long pfn)
+{
+	unsigned long nosave_begin_pfn = PFN_DOWN((unsigned long)&__nosave_begin);
+	unsigned long nosave_end_pfn = PFN_DOWN((unsigned long)&__nosave_end);
+
+	return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn);
+}
+
+void save_processor_state(void)
+{
+	save_and_clear_fpu();
+}
+
+void restore_processor_state(void)
+{
+	struct mm_struct *mm = current->active_mm;
+
+	tsb_context_switch_ctx(mm, CTX_HWBITS(mm->context));
+}
-- 
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