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[Qemu-devel] [RFC][PATCH 4/8 v3] Add API to get memory mapping
From: |
Wen Congyang |
Subject: |
[Qemu-devel] [RFC][PATCH 4/8 v3] Add API to get memory mapping |
Date: |
Tue, 20 Dec 2011 17:11:04 +0800 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100413 Fedora/3.0.4-2.fc13 Thunderbird/3.0.4 |
Add API to get all virtual address and physical address mapping.
If there is no virtual address for some physical address, the virtual
address is 0.
Signed-off-by: Wen Congyang <address@hidden>
---
memory_mapping.c | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
memory_mapping.h | 1 +
2 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/memory_mapping.c b/memory_mapping.c
index d83b7d7..55c9266 100644
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -128,3 +128,58 @@ void free_memory_mapping_list(MemoryMappingList *list)
list->num = 0;
}
+
+void get_memory_mapping(MemoryMappingList *list)
+{
+ CPUState *env;
+ MemoryMapping *memory_mapping;
+ RAMBlock *block;
+ ram_addr_t offset, length;
+
+ last_mapping = NULL;
+
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ cpu_get_memory_mapping(list, env);
+ }
+
+ /* some memory may be not mapped, add them into memory mapping's list */
+ QLIST_FOREACH(block, &ram_list.blocks, next) {
+ offset = block->offset;
+ length = block->length;
+
+ QTAILQ_FOREACH(memory_mapping, &list->head, next) {
+ if (memory_mapping->phys_addr >= (offset + length)) {
+ /*
+ * memory_mapping'list does not conatin the region
+ * [offset, offset+length)
+ */
+ create_new_memory_mapping(list, offset, 0, length);
+ break;
+ }
+
+ if ((memory_mapping->phys_addr + memory_mapping->length) <=
+ offset) {
+ continue;
+ }
+
+ if (memory_mapping->phys_addr > offset) {
+ /*
+ * memory_mapping'list does not conatin the region
+ * [offset, memory_mapping->phys_addr)
+ */
+ create_new_memory_mapping(list, offset, 0,
+ memory_mapping->phys_addr - offset);
+ }
+
+ if ((offset + length) <=
+ (memory_mapping->phys_addr + memory_mapping->length)) {
+ break;
+ }
+ length -= memory_mapping->phys_addr + memory_mapping->length -
+ offset;
+ offset = memory_mapping->phys_addr + memory_mapping->length;
+ }
+ }
+
+ return;
+}
diff --git a/memory_mapping.h b/memory_mapping.h
index a4b1532..679f9ef 100644
--- a/memory_mapping.h
+++ b/memory_mapping.h
@@ -34,5 +34,6 @@ void add_to_memory_mapping(MemoryMappingList *list,
ram_addr_t length);
void free_memory_mapping_list(MemoryMappingList *list);
+void get_memory_mapping(MemoryMappingList *list);
#endif
--
1.7.1
- [Qemu-devel] [RFC][PATCT 0/8 v3] dump memory when host pci device is used by guest, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 1/8 v3] Add API to create memory mapping list, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 2/8 v3] Add API to check whether a physical address is I/O address, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 3/8 v3] target-i386: implement cpu_get_memory_mapping(), Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 4/8 v3] Add API to get memory mapping,
Wen Congyang <=
- [Qemu-devel] [RFC][PATCH 5/8 v3] target-i386: Add API to write elf notes to core file, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 6/8 v3] target-i386: Add API to add extra memory mapping, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 7/8 v3] target-i386: add API to get dump info, Wen Congyang, 2011/12/20
- [Qemu-devel] [RFC][PATCH 8/8 v3] introduce a new monitor command 'dump' to dump guest's memory, Wen Congyang, 2011/12/20