//#define DEBUG_UNASSIGNED
-#define RAM_ADDR_INVALID (~(ram_addr_t)0)
-
static unsigned memory_region_transaction_depth;
static bool memory_region_update_pending;
static bool ioeventfd_update_pending;
visit_type_int32(v, name, &value, errp);
}
-static bool memory_region_get_may_overlap(Object *obj, Error **errp)
-{
- MemoryRegion *mr = MEMORY_REGION(obj);
-
- return mr->may_overlap;
-}
-
static void memory_region_get_size(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
memory_region_get_priority,
NULL, /* memory_region_set_priority */
NULL, NULL, &error_abort);
- object_property_add_bool(OBJECT(mr), "may-overlap",
- memory_region_get_may_overlap,
- NULL, /* memory_region_set_may_overlap */
- &error_abort);
object_property_add(OBJECT(mr), "size", "uint64",
memory_region_get_size,
NULL, /* memory_region_set_size, */
int memory_region_get_fd(MemoryRegion *mr)
{
- if (mr->alias) {
- return memory_region_get_fd(mr->alias);
+ int fd;
+
+ rcu_read_lock();
+ while (mr->alias) {
+ mr = mr->alias;
}
+ fd = mr->ram_block->fd;
+ rcu_read_unlock();
- assert(mr->ram_block);
+ return fd;
+}
- return qemu_get_ram_fd(memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK);
+void memory_region_set_fd(MemoryRegion *mr, int fd)
+{
+ rcu_read_lock();
+ while (mr->alias) {
+ mr = mr->alias;
+ }
+ mr->ram_block->fd = fd;
+ rcu_read_unlock();
}
void *memory_region_get_ram_ptr(MemoryRegion *mr)
mr = mr->alias;
}
assert(mr->ram_block);
- ptr = qemu_get_ram_ptr(mr->ram_block,
- memory_region_get_ram_addr(mr) & TARGET_PAGE_MASK);
+ ptr = qemu_map_ram_ptr(mr->ram_block, offset);
rcu_read_unlock();
- return ptr + offset;
+ return ptr;
+}
+
+MemoryRegion *memory_region_from_host(void *ptr, ram_addr_t *offset)
+{
+ RAMBlock *block;
+
+ block = qemu_ram_block_from_host(ptr, false, offset);
+ if (!block) {
+ return NULL;
+ }
+
+ return block->mr;
}
ram_addr_t memory_region_get_ram_addr(MemoryRegion *mr)
{
assert(mr->ram_block);
- qemu_ram_resize(memory_region_get_ram_addr(mr), newsize, errp);
+ qemu_ram_resize(mr->ram_block, newsize, errp);
}
static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
static void memory_region_update_container_subregions(MemoryRegion *subregion)
{
- hwaddr offset = subregion->addr;
MemoryRegion *mr = subregion->container;
MemoryRegion *other;
memory_region_transaction_begin();
memory_region_ref(subregion);
- QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
- if (subregion->may_overlap || other->may_overlap) {
- continue;
- }
- if (int128_ge(int128_make64(offset),
- int128_add(int128_make64(other->addr), other->size))
- || int128_le(int128_add(int128_make64(offset), subregion->size),
- int128_make64(other->addr))) {
- continue;
- }
-#if 0
- printf("warning: subregion collision %llx/%llx (%s) "
- "vs %llx/%llx (%s)\n",
- (unsigned long long)offset,
- (unsigned long long)int128_get64(subregion->size),
- subregion->name,
- (unsigned long long)other->addr,
- (unsigned long long)int128_get64(other->size),
- other->name);
-#endif
- }
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
if (subregion->priority >= other->priority) {
QTAILQ_INSERT_BEFORE(other, subregion, subregions_link);
hwaddr offset,
MemoryRegion *subregion)
{
- subregion->may_overlap = false;
subregion->priority = 0;
memory_region_add_subregion_common(mr, offset, subregion);
}
MemoryRegion *subregion,
int priority)
{
- subregion->may_overlap = true;
subregion->priority = priority;
memory_region_add_subregion_common(mr, offset, subregion);
}