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


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