[PATCH 04/13] vmcore: introduce types for objects copied in 2nd kernel

[HATAYAMA Daisuke]

Some parts of old memory need to be copied in buffers on 2nd kernel to
be remapped to user-space. To distinguish objects in the buffer on 2nd
kernel and the ones on old memory, enum vmcore_type is introduced: the
object in the buffer on 2nd kernel has VMCORE_2ND_KERNEL type, and the
one on old memory has VMCORE_OLD_MEMORY type.

Signed-off-by: HATAYAMA Daisuke <d.hatayama at jp.fujitsu.com>
---

 include/linux/proc_fs.h |   11 ++++++++++-
 1 files changed, 10 insertions(+), 1 deletions(-)

diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index 32676b3..4b153ed 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -97,11 +97,20 @@ struct kcore_list {
 	int type;
 };
 
+enum vmcore_type {
+	VMCORE_OLD_MEMORY,
+	VMCORE_2ND_KERNEL,
+};
+
 struct vmcore {
 	struct list_head list;
-	unsigned long long paddr;
+	union {
+		unsigned long long paddr;
+		char *buf;
+	};
 	unsigned long long size;
 	loff_t offset;
+	enum vmcore_type type;
 };
 
 #ifdef CONFIG_PROC_FS