#include "exec/memory-internal.h"
#include "exec/ram_addr.h"
+#include "sysemu/sysemu.h"
//#define DEBUG_UNASSIGNED
static unsigned memory_region_transaction_depth;
static bool memory_region_update_pending;
+static bool ioeventfd_update_pending;
static bool global_dirty_log = false;
/* flat_view_mutex is taken around reading as->current_map; the critical
{
AddressSpace *as;
- while (mr->parent) {
- mr = mr->parent;
+ while (mr->container) {
+ mr = mr->container;
}
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
if (mr == as->root) {
return as;
}
}
- abort();
+ return NULL;
}
/* Render a memory region into the global view. Ranges in @view obscure
++memory_region_transaction_depth;
}
+static void memory_region_clear_pending(void)
+{
+ memory_region_update_pending = false;
+ ioeventfd_update_pending = false;
+}
+
void memory_region_transaction_commit(void)
{
AddressSpace *as;
assert(memory_region_transaction_depth);
--memory_region_transaction_depth;
- if (!memory_region_transaction_depth && memory_region_update_pending) {
- memory_region_update_pending = false;
- MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
+ if (!memory_region_transaction_depth) {
+ if (memory_region_update_pending) {
+ MEMORY_LISTENER_CALL_GLOBAL(begin, Forward);
- QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- address_space_update_topology(as);
- }
+ QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
+ address_space_update_topology(as);
+ }
- MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
- }
+ MEMORY_LISTENER_CALL_GLOBAL(commit, Forward);
+ } else if (ioeventfd_update_pending) {
+ QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
+ address_space_update_ioeventfds(as);
+ }
+ }
+ memory_region_clear_pending();
+ }
}
static void memory_region_destructor_none(MemoryRegion *mr)
mr->opaque = NULL;
mr->owner = owner;
mr->iommu_ops = NULL;
- mr->parent = NULL;
+ mr->container = NULL;
mr->size = int128_make64(size);
if (size == UINT64_MAX) {
mr->size = int128_2_64();
mr->ram_addr = qemu_ram_alloc(size, mr);
}
+#ifdef __linux__
+void memory_region_init_ram_from_file(MemoryRegion *mr,
+ struct Object *owner,
+ const char *name,
+ uint64_t size,
+ bool share,
+ const char *path,
+ Error **errp)
+{
+ memory_region_init(mr, owner, name, size);
+ mr->ram = true;
+ mr->terminates = true;
+ mr->destructor = memory_region_destructor_ram;
+ mr->ram_addr = qemu_ram_alloc_from_file(size, mr, share, path, errp);
+}
+#endif
+
void memory_region_init_ram_ptr(MemoryRegion *mr,
Object *owner,
const char *name,
cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client);
}
+int memory_region_get_fd(MemoryRegion *mr)
+{
+ if (mr->alias) {
+ return memory_region_get_fd(mr->alias);
+ }
+
+ assert(mr->terminates);
+
+ return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK);
+}
+
void *memory_region_get_ram_ptr(MemoryRegion *mr)
{
if (mr->alias) {
void memory_region_clear_coalescing(MemoryRegion *mr)
{
CoalescedMemoryRange *cmr;
+ bool updated = false;
qemu_flush_coalesced_mmio_buffer();
mr->flush_coalesced_mmio = false;
cmr = QTAILQ_FIRST(&mr->coalesced);
QTAILQ_REMOVE(&mr->coalesced, cmr, link);
g_free(cmr);
+ updated = true;
+ }
+
+ if (updated) {
+ memory_region_update_coalesced_range(mr);
}
- memory_region_update_coalesced_range(mr);
}
void memory_region_set_flush_coalesced(MemoryRegion *mr)
memmove(&mr->ioeventfds[i+1], &mr->ioeventfds[i],
sizeof(*mr->ioeventfds) * (mr->ioeventfd_nb-1 - i));
mr->ioeventfds[i] = mrfd;
- memory_region_update_pending |= mr->enabled;
+ ioeventfd_update_pending |= mr->enabled;
memory_region_transaction_commit();
}
--mr->ioeventfd_nb;
mr->ioeventfds = g_realloc(mr->ioeventfds,
sizeof(*mr->ioeventfds)*mr->ioeventfd_nb + 1);
- memory_region_update_pending |= mr->enabled;
+ ioeventfd_update_pending |= mr->enabled;
memory_region_transaction_commit();
}
-static void memory_region_add_subregion_common(MemoryRegion *mr,
- hwaddr offset,
- MemoryRegion *subregion)
+static void memory_region_update_container_subregions(MemoryRegion *subregion)
{
+ hwaddr offset = subregion->addr;
+ MemoryRegion *mr = subregion->container;
MemoryRegion *other;
memory_region_transaction_begin();
- assert(!subregion->parent);
memory_region_ref(subregion);
- subregion->parent = mr;
- subregion->addr = offset;
QTAILQ_FOREACH(other, &mr->subregions, subregions_link) {
if (subregion->may_overlap || other->may_overlap) {
continue;
memory_region_transaction_commit();
}
+static void memory_region_add_subregion_common(MemoryRegion *mr,
+ hwaddr offset,
+ MemoryRegion *subregion)
+{
+ assert(!subregion->container);
+ subregion->container = mr;
+ subregion->addr = offset;
+ memory_region_update_container_subregions(subregion);
+}
void memory_region_add_subregion(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion)
{
memory_region_transaction_begin();
- assert(subregion->parent == mr);
- subregion->parent = NULL;
+ assert(subregion->container == mr);
+ subregion->container = NULL;
QTAILQ_REMOVE(&mr->subregions, subregion, subregions_link);
memory_region_unref(subregion);
memory_region_update_pending |= mr->enabled && subregion->enabled;
memory_region_transaction_commit();
}
-void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
+static void memory_region_readd_subregion(MemoryRegion *mr)
{
- MemoryRegion *parent = mr->parent;
- int priority = mr->priority;
- bool may_overlap = mr->may_overlap;
+ MemoryRegion *container = mr->container;
- if (addr == mr->addr || !parent) {
- mr->addr = addr;
- return;
+ if (container) {
+ memory_region_transaction_begin();
+ memory_region_ref(mr);
+ memory_region_del_subregion(container, mr);
+ mr->container = container;
+ memory_region_update_container_subregions(mr);
+ memory_region_unref(mr);
+ memory_region_transaction_commit();
}
+}
- memory_region_transaction_begin();
- memory_region_ref(mr);
- memory_region_del_subregion(parent, mr);
- if (may_overlap) {
- memory_region_add_subregion_overlap(parent, addr, mr, priority);
- } else {
- memory_region_add_subregion(parent, addr, mr);
+void memory_region_set_address(MemoryRegion *mr, hwaddr addr)
+{
+ if (addr != mr->addr) {
+ mr->addr = addr;
+ memory_region_readd_subregion(mr);
}
- memory_region_unref(mr);
- memory_region_transaction_commit();
}
void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset)
sizeof(FlatRange), cmp_flatrange_addr);
}
-bool memory_region_present(MemoryRegion *parent, hwaddr addr)
+bool memory_region_present(MemoryRegion *container, hwaddr addr)
{
- MemoryRegion *mr = memory_region_find(parent, addr, 1).mr;
- if (!mr || (mr == parent)) {
+ MemoryRegion *mr = memory_region_find(container, addr, 1).mr;
+ if (!mr || (mr == container)) {
return false;
}
memory_region_unref(mr);
return true;
}
+bool memory_region_is_mapped(MemoryRegion *mr)
+{
+ return mr->container ? true : false;
+}
+
MemoryRegionSection memory_region_find(MemoryRegion *mr,
hwaddr addr, uint64_t size)
{
FlatRange *fr;
addr += mr->addr;
- for (root = mr; root->parent; ) {
- root = root->parent;
+ for (root = mr; root->container; ) {
+ root = root->container;
addr += root->addr;
}
as = memory_region_to_address_space(root);
+ if (!as) {
+ return ret;
+ }
range = addrrange_make(int128_make64(addr), int128_make64(size));
view = address_space_get_flatview(as);
void address_space_destroy(AddressSpace *as)
{
+ MemoryListener *listener;
+
/* Flush out anything from MemoryListeners listening in on this */
memory_region_transaction_begin();
as->root = NULL;
memory_region_transaction_commit();
QTAILQ_REMOVE(&address_spaces, as, address_spaces_link);
address_space_destroy_dispatch(as);
+
+ QTAILQ_FOREACH(listener, &memory_listeners, link) {
+ assert(listener->address_space_filter != as);
+ }
+
flatview_unref(as->current_map);
g_free(as->name);
g_free(as->ioeventfds);
projects / qemu.git / blobdiff