Patchwork [RFC,06/14,v9] Add API to get memory mapping without do paging

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Submitter Wen Congyang
Date March 14, 2012, 2:08 a.m.
Message ID <4F5FFD91.8070607@cn.fujitsu.com>
Download mbox | patch
Permalink /patch/146524/
State New
Headers show

Comments

Wen Congyang - March 14, 2012, 2:08 a.m.
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>
---
 memory_mapping.c |    9 +++++++++
 memory_mapping.h |    3 +++
 2 files changed, 12 insertions(+), 0 deletions(-)

Patch

diff --git a/memory_mapping.c b/memory_mapping.c
index 2ae8160..8dd0750 100644
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -200,3 +200,12 @@  int qemu_get_guest_memory_mapping(MemoryMappingList *list)
 
     return 0;
 }
+
+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 ebd7cf6..50b1f25 100644
--- a/memory_mapping.h
+++ b/memory_mapping.h
@@ -52,4 +52,7 @@  void memory_mapping_list_init(MemoryMappingList *list);
  */
 int qemu_get_guest_memory_mapping(MemoryMappingList *list);
 
+/* get guest's memory mapping without do paging(virtual address is 0). */
+void qemu_get_guest_simple_memory_mapping(MemoryMappingList *list);
+
 #endif