Patchwork [06/29] Add API to get memory mapping without do paging

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Submitter Luiz Capitulino
Date June 5, 2012, 5:24 p.m.
Message ID <1338917108-3965-7-git-send-email-lcapitulino@redhat.com>
Download mbox | patch
Permalink /patch/163116/
State New
Headers show

Comments

Luiz Capitulino - June 5, 2012, 5:24 p.m.
From: Wen Congyang <wency@cn.fujitsu.com>

crash does not need the virtual address and physical address mapping, and the
mapping does not include the memory that is not referenced by the page table.
crash does not use the virtual address, so we can create the mapping for all
physical memory(virtual address is always 0). This patch provides a API to do
this thing, and it will be used in the following patch.

Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
---
 memory_mapping.c | 9 +++++++++
 memory_mapping.h | 3 +++
 2 files changed, 12 insertions(+)

Patch

diff --git a/memory_mapping.c b/memory_mapping.c
index 627397a..adb1595 100644
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -211,3 +211,12 @@  int qemu_get_guest_memory_mapping(MemoryMappingList *list)
     return 0;
 }
 #endif
+
+void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list)
+{
+    RAMBlock *block;
+
+    QLIST_FOREACH(block, &ram_list.blocks, next) {
+        create_new_memory_mapping(list, block->offset, 0, block->length);
+    }
+}
diff --git a/memory_mapping.h b/memory_mapping.h
index 7f3c256..190de12 100644
--- a/memory_mapping.h
+++ b/memory_mapping.h
@@ -60,6 +60,9 @@  static inline int qemu_get_guest_memory_mapping(MemoryMappingList *list)
 }
 #endif
 
+/* get guest's memory mapping without do paging(virtual address is 0). */
+void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
+
 #else
 
 /* We use MemoryMappingList* in cpu-all.h */