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 <we...@cn.fujitsu.com>
---
memory_mapping.c | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
memory_mapping.h | 8 ++++++
2 files changed, 79 insertions(+), 0 deletions(-)
diff --git a/memory_mapping.c b/memory_mapping.c
index 84fb2c8..3743805 100644
--- a/memory_mapping.c
+++ b/memory_mapping.c
@@ -132,3 +132,74 @@ void memory_mapping_list_init(MemoryMappingList *list)
list->last_mapping = NULL;
QTAILQ_INIT(&list->head);
}
+
+int qemu_get_guest_memory_mapping(MemoryMappingList *list)
+{
+ CPUState *env;
+ MemoryMapping *memory_mapping;
+ RAMBlock *block;
+ ram_addr_t offset, length;
+ int ret;
+
+#if defined(CONFIG_HAVE_GET_MEMORY_MAPPING)
+ for (env = first_cpu; env != NULL; env = env->next_cpu) {
+ ret = cpu_get_memory_mapping(list, env);
+ if (ret < 0) {
+ return -1;
+ }
+ }
+#else
+ return -2;
+#endif
+
+ /* 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's list does not conatin the region
+ * [offset, offset+length)
+ */
+ create_new_memory_mapping(list, offset, 0, length);
+ length = 0;
+ break;
+ }
+
+ if ((memory_mapping->phys_addr + memory_mapping->length) <=
+ offset) {
+ continue;
+ }
+
+ if (memory_mapping->phys_addr > offset) {
+ /*
+ * memory_mapping's 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)) {
+ length = 0;
+ break;
+ }
+ length -= memory_mapping->phys_addr + memory_mapping->length -
+ offset;
+ offset = memory_mapping->phys_addr + memory_mapping->length;
+ }
+
+ if (length > 0) {
+ /*
+ * memory_mapping's list does not conatin the region
+ * [offset, memory_mapping->phys_addr)
+ */
+ create_new_memory_mapping(list, offset, 0, length);
+ }
+ }
+
+ return 0;
+}
diff --git a/memory_mapping.h b/memory_mapping.h
index 633fcb9..5760d1d 100644
--- a/memory_mapping.h
+++ b/memory_mapping.h
@@ -41,4 +41,12 @@ void memory_mapping_list_add_sorted(MemoryMappingList *list,
void memory_mapping_list_free(MemoryMappingList *list);
void memory_mapping_list_init(MemoryMappingList *list);
+/*
+ * Return value:
+ * 0: success
+ * -1: failed
+ * -2: unsupported
+ */
+int qemu_get_guest_memory_mapping(MemoryMappingList *list);
+
#endif
--
1.7.1
