Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 39 insertions, 0 deletions

diff --git a/kernel/kexec_internal.h b/kernel/kexec_internal.h
new file mode 100644
index 0000000000..74da1409cd
--- /dev/null
+++ b/kernel/kexec_internal.h
@@ -0,0 +1,39 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef LINUX_KEXEC_INTERNAL_H
+#define LINUX_KEXEC_INTERNAL_H
+
+#include <linux/kexec.h>
+
+struct kimage *do_kimage_alloc_init(void);
+int sanity_check_segment_list(struct kimage *image);
+void kimage_free_page_list(struct list_head *list);
+void kimage_free(struct kimage *image);
+int kimage_load_segment(struct kimage *image, struct kexec_segment *segment);
+void kimage_terminate(struct kimage *image);
+int kimage_is_destination_range(struct kimage *image,
+				unsigned long start, unsigned long end);
+
+/*
+ * Whatever is used to serialize accesses to the kexec_crash_image needs to be
+ * NMI safe, as __crash_kexec() can happen during nmi_panic(), so here we use a
+ * "simple" atomic variable that is acquired with a cmpxchg().
+ */
+extern atomic_t __kexec_lock;
+static inline bool kexec_trylock(void)
+{
+	return atomic_cmpxchg_acquire(&__kexec_lock, 0, 1) == 0;
+}
+static inline void kexec_unlock(void)
+{
+	atomic_set_release(&__kexec_lock, 0);
+}
+
+#ifdef CONFIG_KEXEC_FILE
+#include <linux/purgatory.h>
+void kimage_file_post_load_cleanup(struct kimage *image);
+extern char kexec_purgatory[];
+extern size_t kexec_purgatory_size;
+#else /* CONFIG_KEXEC_FILE */
+static inline void kimage_file_post_load_cleanup(struct kimage *image) { }
+#endif /* CONFIG_KEXEC_FILE */
+#endif /* LINUX_KEXEC_INTERNAL_H */