X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/7acd80e82d9332dfdaedc60c91eb3ec5195738bb..9463ee1f5f4e0c496f2f1f3ae641b650f4836627:/memory.c

diff --git a/memory.c b/memory.c
index 51204aa079..8141486832 100644
--- a/memory.c
+++ b/memory.c
@@ -15,21 +15,24 @@
 
 #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"
 
 #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
@@ -37,9 +40,9 @@
 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(memory_listeners, MemoryListener) memory_listeners
+static QTAILQ_HEAD(, MemoryListener) memory_listeners
     = QTAILQ_HEAD_INITIALIZER(memory_listeners);
 
 static QTAILQ_HEAD(, AddressSpace) address_spaces
@@ -113,8 +116,7 @@ enum ListenerDirection { Forward, Reverse };
             }                                                           \
             break;                                                      \
         case Reverse:                                                   \
-            QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners,        \
-                                   memory_listeners, link) {            \
+            QTAILQ_FOREACH_REVERSE(_listener, &memory_listeners, link) { \
                 if (_listener->_callback) {                             \
                     _listener->_callback(_listener, ##_args);           \
                 }                                                       \
@@ -128,19 +130,17 @@ enum ListenerDirection { Forward, Reverse };
 #define MEMORY_LISTENER_CALL(_as, _callback, _direction, _section, _args...) \
     do {                                                                \
         MemoryListener *_listener;                                      \
-        struct memory_listeners_as *list = &(_as)->listeners;           \
                                                                         \
         switch (_direction) {                                           \
         case Forward:                                                   \
-            QTAILQ_FOREACH(_listener, list, link_as) {                  \
+            QTAILQ_FOREACH(_listener, &(_as)->listeners, link_as) {     \
                 if (_listener->_callback) {                             \
                     _listener->_callback(_listener, _section, ##_args); \
                 }                                                       \
             }                                                           \
             break;                                                      \
         case Reverse:                                                   \
-            QTAILQ_FOREACH_REVERSE(_listener, list, memory_listeners_as, \
-                                   link_as) {                           \
+            QTAILQ_FOREACH_REVERSE(_listener, &(_as)->listeners, link_as) { \
                 if (_listener->_callback) {                             \
                     _listener->_callback(_listener, _section, ##_args); \
                 }                                                       \
@@ -216,6 +216,8 @@ struct FlatRange {
     uint8_t dirty_log_mask;
     bool romd_mode;
     bool readonly;
+    bool nonvolatile;
+    int has_coalesced_range;
 };
 
 #define FOR_EACH_FLAT_RANGE(var, view)          \
@@ -231,6 +233,7 @@ section_from_flat_range(FlatRange *fr, FlatView *fv)
         .size = fr->addr.size,
         .offset_within_address_space = int128_get64(fr->addr.start),
         .readonly = fr->readonly,
+        .nonvolatile = fr->nonvolatile,
     };
 }
 
@@ -240,7 +243,8 @@ static bool flatrange_equal(FlatRange *a, FlatRange *b)
         && addrrange_equal(a->addr, b->addr)
         && a->offset_in_region == b->offset_in_region
         && a->romd_mode == b->romd_mode
-        && a->readonly == b->readonly;
+        && a->readonly == b->readonly
+        && a->nonvolatile == b->nonvolatile;
 }
 
 static FlatView *flatview_new(MemoryRegion *mr_root)
@@ -312,13 +316,14 @@ static bool can_merge(FlatRange *r1, FlatRange *r2)
                      int128_make64(r2->offset_in_region))
         && r1->dirty_log_mask == r2->dirty_log_mask
         && r1->romd_mode == r2->romd_mode
-        && r1->readonly == r2->readonly;
+        && r1->readonly == r2->readonly
+        && r1->nonvolatile == r2->nonvolatile;
 }
 
 /* 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) {
@@ -329,6 +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;
@@ -592,7 +600,8 @@ static void render_memory_region(FlatView *view,
                                  MemoryRegion *mr,
                                  Int128 base,
                                  AddrRange clip,
-                                 bool readonly)
+                                 bool readonly,
+                                 bool nonvolatile)
 {
     MemoryRegion *subregion;
     unsigned i;
@@ -608,6 +617,7 @@ static void render_memory_region(FlatView *view,
 
     int128_addto(&base, int128_make64(mr->addr));
     readonly |= mr->readonly;
+    nonvolatile |= mr->nonvolatile;
 
     tmp = addrrange_make(base, mr->size);
 
@@ -620,13 +630,15 @@ static void render_memory_region(FlatView *view,
     if (mr->alias) {
         int128_subfrom(&base, int128_make64(mr->alias->addr));
         int128_subfrom(&base, int128_make64(mr->alias_offset));
-        render_memory_region(view, mr->alias, base, clip, readonly);
+        render_memory_region(view, mr->alias, base, clip,
+                             readonly, nonvolatile);
         return;
     }
 
     /* Render subregions in priority order. */
     QTAILQ_FOREACH(subregion, &mr->subregions, subregions_link) {
-        render_memory_region(view, subregion, base, clip, readonly);
+        render_memory_region(view, subregion, base, clip,
+                             readonly, nonvolatile);
     }
 
     if (!mr->terminates) {
@@ -641,6 +653,8 @@ static void render_memory_region(FlatView *view,
     fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
     fr.romd_mode = mr->romd_mode;
     fr.readonly = readonly;
+    fr.nonvolatile = nonvolatile;
+    fr.has_coalesced_range = 0;
 
     /* Render the region itself into any gaps left by the current view. */
     for (i = 0; i < view->nr && int128_nz(remain); ++i) {
@@ -726,7 +740,8 @@ static FlatView *generate_memory_topology(MemoryRegion *mr)
 
     if (mr) {
         render_memory_region(view, mr, int128_zero(),
-                             addrrange_make(int128_zero(), int128_2_64()), false);
+                             addrrange_make(int128_zero(), int128_2_64()),
+                             false, false);
     }
     flatview_simplify(view);
 
@@ -840,6 +855,49 @@ static void address_space_update_ioeventfds(AddressSpace *as)
     flatview_unref(view);
 }
 
+static void flat_range_coalesced_io_del(FlatRange *fr, AddressSpace *as)
+{
+    if (!fr->has_coalesced_range) {
+        return;
+    }
+
+    if (--fr->has_coalesced_range > 0) {
+        return;
+    }
+
+    MEMORY_LISTENER_UPDATE_REGION(fr, as, Reverse, coalesced_io_del,
+                                  int128_get64(fr->addr.start),
+                                  int128_get64(fr->addr.size));
+}
+
+static void flat_range_coalesced_io_add(FlatRange *fr, AddressSpace *as)
+{
+    MemoryRegion *mr = fr->mr;
+    CoalescedMemoryRange *cmr;
+    AddrRange tmp;
+
+    if (QTAILQ_EMPTY(&mr->coalesced)) {
+        return;
+    }
+
+    if (fr->has_coalesced_range++) {
+        return;
+    }
+
+    QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
+        tmp = addrrange_shift(cmr->addr,
+                              int128_sub(fr->addr.start,
+                                         int128_make64(fr->offset_in_region)));
+        if (!addrrange_intersects(tmp, fr->addr)) {
+            continue;
+        }
+        tmp = addrrange_intersection(tmp, fr->addr);
+        MEMORY_LISTENER_UPDATE_REGION(fr, as, Forward, coalesced_io_add,
+                                      int128_get64(tmp.start),
+                                      int128_get64(tmp.size));
+    }
+}
+
 static void address_space_update_topology_pass(AddressSpace *as,
                                                const FlatView *old_view,
                                                const FlatView *new_view,
@@ -872,6 +930,7 @@ static void address_space_update_topology_pass(AddressSpace *as,
             /* In old but not in new, or in both but attributes changed. */
 
             if (!adding) {
+                flat_range_coalesced_io_del(frold, as);
                 MEMORY_LISTENER_UPDATE_REGION(frold, as, Reverse, region_del);
             }
 
@@ -900,6 +959,7 @@ static void address_space_update_topology_pass(AddressSpace *as,
 
             if (adding) {
                 MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_add);
+                flat_range_coalesced_io_add(frnew, as);
             }
 
             ++inew;
@@ -1595,10 +1655,17 @@ void memory_region_init_ram_device_ptr(MemoryRegion *mr,
                                        uint64_t size,
                                        void *ptr)
 {
-    memory_region_init_ram_ptr(mr, owner, name, size, ptr);
+    memory_region_init(mr, owner, name, size);
+    mr->ram = true;
+    mr->terminates = true;
     mr->ram_device = true;
     mr->ops = &ram_device_mem_ops;
     mr->opaque = mr;
+    mr->destructor = memory_region_destructor_ram;
+    mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
+    /* qemu_ram_alloc_from_ptr cannot fail with ptr != NULL.  */
+    assert(ptr != NULL);
+    mr->ram_block = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
 }
 
 void memory_region_init_alias(MemoryRegion *mr,
@@ -1965,14 +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)
 {
@@ -2010,6 +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,
@@ -2017,8 +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,
@@ -2039,6 +2148,16 @@ void memory_region_set_readonly(MemoryRegion *mr, bool readonly)
     }
 }
 
+void memory_region_set_nonvolatile(MemoryRegion *mr, bool nonvolatile)
+{
+    if (mr->nonvolatile != nonvolatile) {
+        memory_region_transaction_begin();
+        mr->nonvolatile = nonvolatile;
+        memory_region_update_pending |= mr->enabled;
+        memory_region_transaction_commit();
+    }
+}
+
 void memory_region_rom_device_set_romd(MemoryRegion *mr, bool romd_mode)
 {
     if (mr->romd_mode != romd_mode) {
@@ -2116,34 +2235,12 @@ static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpa
 {
     FlatView *view;
     FlatRange *fr;
-    CoalescedMemoryRange *cmr;
-    AddrRange tmp;
-    MemoryRegionSection section;
 
     view = address_space_get_flatview(as);
     FOR_EACH_FLAT_RANGE(fr, view) {
         if (fr->mr == mr) {
-            section = (MemoryRegionSection) {
-                .fv = view,
-                .offset_within_address_space = int128_get64(fr->addr.start),
-                .size = fr->addr.size,
-            };
-
-            MEMORY_LISTENER_CALL(as, coalesced_io_del, Reverse, &section,
-                                 int128_get64(fr->addr.start),
-                                 int128_get64(fr->addr.size));
-            QTAILQ_FOREACH(cmr, &mr->coalesced, link) {
-                tmp = addrrange_shift(cmr->addr,
-                                      int128_sub(fr->addr.start,
-                                                 int128_make64(fr->offset_in_region)));
-                if (!addrrange_intersects(tmp, fr->addr)) {
-                    continue;
-                }
-                tmp = addrrange_intersection(tmp, fr->addr);
-                MEMORY_LISTENER_CALL(as, coalesced_io_add, Forward, &section,
-                                     int128_get64(tmp.start),
-                                     int128_get64(tmp.size));
-            }
+            flat_range_coalesced_io_del(fr, as);
+            flat_range_coalesced_io_add(fr, as);
         }
     }
     flatview_unref(view);
@@ -2489,6 +2586,7 @@ static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
     ret.size = range.size;
     ret.offset_within_address_space = int128_get64(range.start);
     ret.readonly = fr->readonly;
+    ret.nonvolatile = fr->nonvolatile;
     return ret;
 }
 
@@ -2533,7 +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();
@@ -2543,7 +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();
@@ -2642,8 +2740,7 @@ void memory_listener_register(MemoryListener *listener, AddressSpace *as)
 
     listener->address_space = as;
     if (QTAILQ_EMPTY(&memory_listeners)
-        || listener->priority >= QTAILQ_LAST(&memory_listeners,
-                                             memory_listeners)->priority) {
+        || listener->priority >= QTAILQ_LAST(&memory_listeners)->priority) {
         QTAILQ_INSERT_TAIL(&memory_listeners, listener, link);
     } else {
         QTAILQ_FOREACH(other, &memory_listeners, link) {
@@ -2655,8 +2752,7 @@ void memory_listener_register(MemoryListener *listener, AddressSpace *as)
     }
 
     if (QTAILQ_EMPTY(&as->listeners)
-        || listener->priority >= QTAILQ_LAST(&as->listeners,
-                                             memory_listeners)->priority) {
+        || listener->priority >= QTAILQ_LAST(&as->listeners)->priority) {
         QTAILQ_INSERT_TAIL(&as->listeners, listener, link_as);
     } else {
         QTAILQ_FOREACH(other, &as->listeners, link_as) {
@@ -2682,6 +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);
@@ -2746,52 +2849,49 @@ struct MemoryRegionList {
     QTAILQ_ENTRY(MemoryRegionList) mrqueue;
 };
 
-typedef QTAILQ_HEAD(mrqueue, MemoryRegionList) MemoryRegionListHead;
+typedef QTAILQ_HEAD(, MemoryRegionList) MemoryRegionListHead;
 
 #define MR_SIZE(size) (int128_nz(size) ? (hwaddr)int128_get64( \
                            int128_sub((size), int128_one())) : 0)
 #define MTREE_INDENT "  "
 
-static void mtree_expand_owner(fprintf_function mon_printf, void *f,
-                               const char *label, Object *obj)
+static void mtree_expand_owner(const char *label, Object *obj)
 {
     DeviceState *dev = (DeviceState *) object_dynamic_cast(obj, TYPE_DEVICE);
 
-    mon_printf(f, " %s:{%s", label, dev ? "dev" : "obj");
+    qemu_printf(" %s:{%s", label, dev ? "dev" : "obj");
     if (dev && dev->id) {
-        mon_printf(f, " id=%s", dev->id);
+        qemu_printf(" id=%s", dev->id);
     } else {
         gchar *canonical_path = object_get_canonical_path(obj);
         if (canonical_path) {
-            mon_printf(f, " path=%s", canonical_path);
+            qemu_printf(" path=%s", canonical_path);
             g_free(canonical_path);
         } else {
-            mon_printf(f, " type=%s", object_get_typename(obj));
+            qemu_printf(" type=%s", object_get_typename(obj));
         }
     }
-    mon_printf(f, "}");
+    qemu_printf("}");
 }
 
-static void mtree_print_mr_owner(fprintf_function mon_printf, void *f,
-                                 const MemoryRegion *mr)
+static void mtree_print_mr_owner(const MemoryRegion *mr)
 {
     Object *owner = mr->owner;
     Object *parent = memory_region_owner((MemoryRegion *)mr);
 
     if (!owner && !parent) {
-        mon_printf(f, " orphan");
+        qemu_printf(" orphan");
         return;
     }
     if (owner) {
-        mtree_expand_owner(mon_printf, f, "owner", owner);
+        mtree_expand_owner("owner", owner);
     }
     if (parent && parent != owner) {
-        mtree_expand_owner(mon_printf, f, "parent", parent);
+        mtree_expand_owner("parent", parent);
     }
 }
 
-static void mtree_print_mr(fprintf_function mon_printf, void *f,
-                           const MemoryRegion *mr, unsigned int level,
+static void mtree_print_mr(const MemoryRegion *mr, unsigned int level,
                            hwaddr base,
                            MemoryRegionListHead *alias_print_queue,
                            bool owner)
@@ -2807,7 +2907,7 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
     }
 
     for (i = 0; i < level; i++) {
-        mon_printf(f, MTREE_INDENT);
+        qemu_printf(MTREE_INDENT);
     }
 
     cur_start = base + mr->addr;
@@ -2819,7 +2919,7 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
      * user who is observing this.
      */
     if (cur_start < base || cur_end < cur_start) {
-        mon_printf(f, "[DETECTED OVERFLOW!] ");
+        qemu_printf("[DETECTED OVERFLOW!] ");
     }
 
     if (mr->alias) {
@@ -2838,33 +2938,35 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
             ml->mr = mr->alias;
             QTAILQ_INSERT_TAIL(alias_print_queue, ml, mrqueue);
         }
-        mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
-                   " (prio %d, %s): alias %s @%s " TARGET_FMT_plx
-                   "-" TARGET_FMT_plx "%s",
-                   cur_start, cur_end,
-                   mr->priority,
-                   memory_region_type((MemoryRegion *)mr),
-                   memory_region_name(mr),
-                   memory_region_name(mr->alias),
-                   mr->alias_offset,
-                   mr->alias_offset + MR_SIZE(mr->size),
-                   mr->enabled ? "" : " [disabled]");
+        qemu_printf(TARGET_FMT_plx "-" TARGET_FMT_plx
+                    " (prio %d, %s%s): alias %s @%s " TARGET_FMT_plx
+                    "-" TARGET_FMT_plx "%s",
+                    cur_start, cur_end,
+                    mr->priority,
+                    mr->nonvolatile ? "nv-" : "",
+                    memory_region_type((MemoryRegion *)mr),
+                    memory_region_name(mr),
+                    memory_region_name(mr->alias),
+                    mr->alias_offset,
+                    mr->alias_offset + MR_SIZE(mr->size),
+                    mr->enabled ? "" : " [disabled]");
         if (owner) {
-            mtree_print_mr_owner(mon_printf, f, mr);
+            mtree_print_mr_owner(mr);
         }
     } else {
-        mon_printf(f,
-                   TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %s): %s%s",
-                   cur_start, cur_end,
-                   mr->priority,
-                   memory_region_type((MemoryRegion *)mr),
-                   memory_region_name(mr),
-                   mr->enabled ? "" : " [disabled]");
+        qemu_printf(TARGET_FMT_plx "-" TARGET_FMT_plx
+                    " (prio %d, %s%s): %s%s",
+                    cur_start, cur_end,
+                    mr->priority,
+                    mr->nonvolatile ? "nv-" : "",
+                    memory_region_type((MemoryRegion *)mr),
+                    memory_region_name(mr),
+                    mr->enabled ? "" : " [disabled]");
         if (owner) {
-            mtree_print_mr_owner(mon_printf, f, mr);
+            mtree_print_mr_owner(mr);
         }
     }
-    mon_printf(f, "\n");
+    qemu_printf("\n");
 
     QTAILQ_INIT(&submr_print_queue);
 
@@ -2886,7 +2988,7 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
     }
 
     QTAILQ_FOREACH(ml, &submr_print_queue, mrqueue) {
-        mtree_print_mr(mon_printf, f, ml->mr, level + 1, cur_start,
+        mtree_print_mr(ml->mr, level + 1, cur_start,
                        alias_print_queue, owner);
     }
 
@@ -2896,11 +2998,11 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
 }
 
 struct FlatViewInfo {
-    fprintf_function mon_printf;
-    void *f;
     int counter;
     bool dispatch_tree;
     bool owner;
+    AccelClass *ac;
+    const char *ac_name;
 };
 
 static void mtree_print_flatview(gpointer key, gpointer value,
@@ -2909,68 +3011,82 @@ static void mtree_print_flatview(gpointer key, gpointer value,
     FlatView *view = key;
     GArray *fv_address_spaces = value;
     struct FlatViewInfo *fvi = user_data;
-    fprintf_function p = fvi->mon_printf;
-    void *f = fvi->f;
     FlatRange *range = &view->ranges[0];
     MemoryRegion *mr;
     int n = view->nr;
     int i;
     AddressSpace *as;
 
-    p(f, "FlatView #%d\n", fvi->counter);
+    qemu_printf("FlatView #%d\n", fvi->counter);
     ++fvi->counter;
 
     for (i = 0; i < fv_address_spaces->len; ++i) {
         as = g_array_index(fv_address_spaces, AddressSpace*, i);
-        p(f, " AS \"%s\", root: %s", as->name, memory_region_name(as->root));
+        qemu_printf(" AS \"%s\", root: %s",
+                    as->name, memory_region_name(as->root));
         if (as->root->alias) {
-            p(f, ", alias %s", memory_region_name(as->root->alias));
+            qemu_printf(", alias %s", memory_region_name(as->root->alias));
         }
-        p(f, "\n");
+        qemu_printf("\n");
     }
 
-    p(f, " Root memory region: %s\n",
+    qemu_printf(" Root memory region: %s\n",
       view->root ? memory_region_name(view->root) : "(none)");
 
     if (n <= 0) {
-        p(f, MTREE_INDENT "No rendered FlatView\n\n");
+        qemu_printf(MTREE_INDENT "No rendered FlatView\n\n");
         return;
     }
 
     while (n--) {
         mr = range->mr;
         if (range->offset_in_region) {
-            p(f, MTREE_INDENT TARGET_FMT_plx "-"
-              TARGET_FMT_plx " (prio %d, %s): %s @" TARGET_FMT_plx,
-              int128_get64(range->addr.start),
-              int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
-              mr->priority,
-              range->readonly ? "rom" : memory_region_type(mr),
-              memory_region_name(mr),
-              range->offset_in_region);
+            qemu_printf(MTREE_INDENT TARGET_FMT_plx "-" TARGET_FMT_plx
+                        " (prio %d, %s%s): %s @" TARGET_FMT_plx,
+                        int128_get64(range->addr.start),
+                        int128_get64(range->addr.start)
+                        + MR_SIZE(range->addr.size),
+                        mr->priority,
+                        range->nonvolatile ? "nv-" : "",
+                        range->readonly ? "rom" : memory_region_type(mr),
+                        memory_region_name(mr),
+                        range->offset_in_region);
         } else {
-            p(f, MTREE_INDENT TARGET_FMT_plx "-"
-              TARGET_FMT_plx " (prio %d, %s): %s",
-              int128_get64(range->addr.start),
-              int128_get64(range->addr.start) + MR_SIZE(range->addr.size),
-              mr->priority,
-              range->readonly ? "rom" : memory_region_type(mr),
-              memory_region_name(mr));
+            qemu_printf(MTREE_INDENT TARGET_FMT_plx "-" TARGET_FMT_plx
+                        " (prio %d, %s%s): %s",
+                        int128_get64(range->addr.start),
+                        int128_get64(range->addr.start)
+                        + MR_SIZE(range->addr.size),
+                        mr->priority,
+                        range->nonvolatile ? "nv-" : "",
+                        range->readonly ? "rom" : memory_region_type(mr),
+                        memory_region_name(mr));
         }
         if (fvi->owner) {
-            mtree_print_mr_owner(p, f, mr);
+            mtree_print_mr_owner(mr);
         }
-        p(f, "\n");
+
+        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++;
     }
 
 #if !defined(CONFIG_USER_ONLY)
     if (fvi->dispatch_tree && view->root) {
-        mtree_print_dispatch(p, f, view->dispatch, view->root);
+        mtree_print_dispatch(view->dispatch, view->root);
     }
 #endif
 
-    p(f, "\n");
+    qemu_printf("\n");
 }
 
 static gboolean mtree_info_flatview_free(gpointer key, gpointer value,
@@ -2985,8 +3101,7 @@ static gboolean mtree_info_flatview_free(gpointer key, gpointer value,
     return true;
 }
 
-void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
-                bool dispatch_tree, bool owner)
+void mtree_info(bool flatview, bool dispatch_tree, bool owner)
 {
     MemoryRegionListHead ml_head;
     MemoryRegionList *ml, *ml2;
@@ -2995,14 +3110,19 @@ void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
     if (flatview) {
         FlatView *view;
         struct FlatViewInfo fvi = {
-            .mon_printf = mon_printf,
-            .f = f,
             .counter = 0,
             .dispatch_tree = dispatch_tree,
             .owner = 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) {
@@ -3030,16 +3150,16 @@ void mtree_info(fprintf_function mon_printf, void *f, bool flatview,
     QTAILQ_INIT(&ml_head);
 
     QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
-        mon_printf(f, "address-space: %s\n", as->name);
-        mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head, owner);
-        mon_printf(f, "\n");
+        qemu_printf("address-space: %s\n", as->name);
+        mtree_print_mr(as->root, 1, 0, &ml_head, owner);
+        qemu_printf("\n");
     }
 
     /* print aliased regions */
     QTAILQ_FOREACH(ml, &ml_head, mrqueue) {
-        mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
-        mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head, owner);
-        mon_printf(f, "\n");
+        qemu_printf("memory-region: %s\n", memory_region_name(ml->mr));
+        mtree_print_mr(ml->mr, 1, 0, &ml_head, owner);
+        qemu_printf("\n");
     }
 
     QTAILQ_FOREACH_SAFE(ml, &ml_head, mrqueue, ml2) {
@@ -3125,6 +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,