X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/c4e9f845f6248885ff73a9e1ecb74052a1c3dcd4..156d320349df5d17e1c4fbf11fad70d2d93f5e26:/memory.c

diff --git a/memory.c b/memory.c
index bb2b71ee38..8141486832 100644
--- a/memory.c
+++ b/memory.c
@@ -15,13 +15,13 @@
 
 #include "qemu/osdep.h"
 #include "qapi/error.h"
-#include "qemu-common.h"
 #include "cpu.h"
 #include "exec/memory.h"
 #include "exec/address-spaces.h"
 #include "qapi/visitor.h"
 #include "qemu/bitops.h"
 #include "qemu/error-report.h"
+#include "qemu/main-loop.h"
 #include "qemu/qemu-print.h"
 #include "qom/object.h"
 #include "trace-root.h"
@@ -29,8 +29,10 @@
 #include "exec/memory-internal.h"
 #include "exec/ram_addr.h"
 #include "sysemu/kvm.h"
-#include "sysemu/sysemu.h"
-#include "hw/qdev-properties.h"
+#include "sysemu/runstate.h"
+#include "sysemu/tcg.h"
+#include "sysemu/accel.h"
+#include "hw/boards.h"
 #include "migration/vmstate.h"
 
 //#define DEBUG_UNASSIGNED
@@ -38,7 +40,7 @@
 static unsigned memory_region_transaction_depth;
 static bool memory_region_update_pending;
 static bool ioeventfd_update_pending;
-static bool global_dirty_log = false;
+bool global_dirty_log;
 
 static QTAILQ_HEAD(, MemoryListener) memory_listeners
     = QTAILQ_HEAD_INITIALIZER(memory_listeners);
@@ -321,7 +323,7 @@ static bool can_merge(FlatRange *r1, FlatRange *r2)
 /* Attempt to simplify a view by merging adjacent ranges */
 static void flatview_simplify(FlatView *view)
 {
-    unsigned i, j;
+    unsigned i, j, k;
 
     i = 0;
     while (i < view->nr) {
@@ -332,6 +334,9 @@ static void flatview_simplify(FlatView *view)
             ++j;
         }
         ++i;
+        for (k = i; k < j; k++) {
+            memory_region_unref(view->ranges[k].mr);
+        }
         memmove(&view->ranges[i], &view->ranges[j],
                 (view->nr - j) * sizeof(view->ranges[j]));
         view->nr -= j - i;
@@ -2027,14 +2032,6 @@ void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
     memory_region_transaction_commit();
 }
 
-bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
-                             hwaddr size, unsigned client)
-{
-    assert(mr->ram_block);
-    return cpu_physical_memory_get_dirty(memory_region_get_ram_addr(mr) + addr,
-                                         size, client);
-}
-
 void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
                              hwaddr size)
 {
@@ -2072,6 +2069,57 @@ static void memory_region_sync_dirty_bitmap(MemoryRegion *mr)
     }
 }
 
+void memory_region_clear_dirty_bitmap(MemoryRegion *mr, hwaddr start,
+                                      hwaddr len)
+{
+    MemoryRegionSection mrs;
+    MemoryListener *listener;
+    AddressSpace *as;
+    FlatView *view;
+    FlatRange *fr;
+    hwaddr sec_start, sec_end, sec_size;
+
+    QTAILQ_FOREACH(listener, &memory_listeners, link) {
+        if (!listener->log_clear) {
+            continue;
+        }
+        as = listener->address_space;
+        view = address_space_get_flatview(as);
+        FOR_EACH_FLAT_RANGE(fr, view) {
+            if (!fr->dirty_log_mask || fr->mr != mr) {
+                /*
+                 * Clear dirty bitmap operation only applies to those
+                 * regions whose dirty logging is at least enabled
+                 */
+                continue;
+            }
+
+            mrs = section_from_flat_range(fr, view);
+
+            sec_start = MAX(mrs.offset_within_region, start);
+            sec_end = mrs.offset_within_region + int128_get64(mrs.size);
+            sec_end = MIN(sec_end, start + len);
+
+            if (sec_start >= sec_end) {
+                /*
+                 * If this memory region section has no intersection
+                 * with the requested range, skip.
+                 */
+                continue;
+            }
+
+            /* Valid case; shrink the section if needed */
+            mrs.offset_within_address_space +=
+                sec_start - mrs.offset_within_region;
+            mrs.offset_within_region = sec_start;
+            sec_size = sec_end - sec_start;
+            mrs.size = int128_make64(sec_size);
+            listener->log_clear(listener, &mrs);
+        }
+        flatview_unref(view);
+    }
+}
+
 DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
                                                             hwaddr addr,
                                                             hwaddr size,
@@ -2079,8 +2127,7 @@ DirtyBitmapSnapshot *memory_region_snapshot_and_clear_dirty(MemoryRegion *mr,
 {
     assert(mr->ram_block);
     memory_region_sync_dirty_bitmap(mr);
-    return cpu_physical_memory_snapshot_and_clear_dirty(
-                memory_region_get_ram_addr(mr) + addr, size, client);
+    return cpu_physical_memory_snapshot_and_clear_dirty(mr, addr, size, client);
 }
 
 bool memory_region_snapshot_get_dirty(MemoryRegion *mr, DirtyBitmapSnapshot *snap,
@@ -2584,7 +2631,7 @@ void memory_global_dirty_log_start(void)
 
     MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
 
-    /* Refresh DIRTY_LOG_MIGRATION bit.  */
+    /* Refresh DIRTY_MEMORY_MIGRATION bit.  */
     memory_region_transaction_begin();
     memory_region_update_pending = true;
     memory_region_transaction_commit();
@@ -2594,7 +2641,7 @@ static void memory_global_dirty_log_do_stop(void)
 {
     global_dirty_log = false;
 
-    /* Refresh DIRTY_LOG_MIGRATION bit.  */
+    /* Refresh DIRTY_MEMORY_MIGRATION bit.  */
     memory_region_transaction_begin();
     memory_region_update_pending = true;
     memory_region_transaction_commit();
@@ -2731,6 +2778,13 @@ void memory_listener_unregister(MemoryListener *listener)
     listener->address_space = NULL;
 }
 
+void address_space_remove_listeners(AddressSpace *as)
+{
+    while (!QTAILQ_EMPTY(&as->listeners)) {
+        memory_listener_unregister(QTAILQ_FIRST(&as->listeners));
+    }
+}
+
 void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
 {
     memory_region_ref(root);
@@ -2947,6 +3001,8 @@ struct FlatViewInfo {
     int counter;
     bool dispatch_tree;
     bool owner;
+    AccelClass *ac;
+    const char *ac_name;
 };
 
 static void mtree_print_flatview(gpointer key, gpointer value,
@@ -3009,6 +3065,17 @@ static void mtree_print_flatview(gpointer key, gpointer value,
         if (fvi->owner) {
             mtree_print_mr_owner(mr);
         }
+
+        if (fvi->ac) {
+            for (i = 0; i < fv_address_spaces->len; ++i) {
+                as = g_array_index(fv_address_spaces, AddressSpace*, i);
+                if (fvi->ac->has_memory(current_machine, as,
+                                        int128_get64(range->addr.start),
+                                        MR_SIZE(range->addr.size) + 1)) {
+                    qemu_printf(" %s", fvi->ac_name);
+                }
+            }
+        }
         qemu_printf("\n");
         range++;
     }
@@ -3049,6 +3116,13 @@ void mtree_info(bool flatview, bool dispatch_tree, bool owner)
         };
         GArray *fv_address_spaces;
         GHashTable *views = g_hash_table_new(g_direct_hash, g_direct_equal);
+        AccelClass *ac = ACCEL_GET_CLASS(current_machine->accelerator);
+
+        if (ac->has_memory) {
+            fvi.ac = ac;
+            fvi.ac_name = current_machine->accel ? current_machine->accel :
+                object_class_get_name(OBJECT_CLASS(ac));
+        }
 
         /* Gather all FVs in one table */
         QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
@@ -3171,6 +3245,7 @@ void memory_region_init_rom_device(MemoryRegion *mr,
 static const TypeInfo memory_region_info = {
     .parent             = TYPE_OBJECT,
     .name               = TYPE_MEMORY_REGION,
+    .class_size         = sizeof(MemoryRegionClass),
     .instance_size      = sizeof(MemoryRegion),
     .instance_init      = memory_region_initfn,
     .instance_finalize  = memory_region_finalize,