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-rw-r--r--exec.c12
1 files changed, 7 insertions, 5 deletions
diff --git a/exec.c b/exec.c
index 6d3492ecc9..7a6d9690d6 100644
--- a/exec.c
+++ b/exec.c
@@ -122,7 +122,7 @@ typedef struct PhysPageMap {
MemoryRegionSection *sections;
} PhysPageMap;
-static PhysPageMap cur_map;
+static PhysPageMap *prev_map;
static PhysPageMap next_map;
#define PHYS_MAP_NODE_NIL (((uint16_t)~0) >> 1)
@@ -790,7 +790,7 @@ static void phys_section_destroy(MemoryRegion *mr)
}
}
-static void phys_sections_clear(PhysPageMap *map)
+static void phys_sections_free(PhysPageMap *map)
{
while (map->sections_nb > 0) {
MemoryRegionSection *section = &map->sections[--map->sections_nb];
@@ -798,6 +798,7 @@ static void phys_sections_clear(PhysPageMap *map)
}
g_free(map->sections);
g_free(map->nodes);
+ g_free(map);
}
static void register_subpage(AddressSpaceDispatch *d, MemoryRegionSection *section)
@@ -1731,6 +1732,9 @@ static void core_begin(MemoryListener *listener)
{
uint16_t n;
+ prev_map = g_new(PhysPageMap, 1);
+ *prev_map = next_map;
+
memset(&next_map, 0, sizeof(next_map));
n = dummy_section(&io_mem_unassigned);
assert(n == PHYS_SECTION_UNASSIGNED);
@@ -1747,9 +1751,7 @@ static void core_begin(MemoryListener *listener)
*/
static void core_commit(MemoryListener *listener)
{
- PhysPageMap info = cur_map;
- cur_map = next_map;
- phys_sections_clear(&info);
+ phys_sections_free(prev_map);
}
static void tcg_commit(MemoryListener *listener)