//#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;
static bool global_dirty_log = false;
-/* flat_view_mutex is taken around reading as->current_map; the critical
- * section is extremely short, so I'm using a single mutex for every AS.
- * We could also RCU for the read-side.
- *
- * The BQL is taken around transaction commits, hence both locks are taken
- * while writing to as->current_map (with the BQL taken outside).
- */
-static QemuMutex flat_view_mutex;
-
static QTAILQ_HEAD(memory_listeners, MemoryListener) memory_listeners
= QTAILQ_HEAD_INITIALIZER(memory_listeners);
static QTAILQ_HEAD(, AddressSpace) address_spaces
= QTAILQ_HEAD_INITIALIZER(address_spaces);
-static void memory_init(void)
-{
- qemu_mutex_init(&flat_view_mutex);
-}
-
typedef struct AddrRange AddrRange;
/*
} while (0)
/* No need to ref/unref .mr, the FlatRange keeps it alive. */
-#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback) \
+#define MEMORY_LISTENER_UPDATE_REGION(fr, as, dir, callback, _args...) \
MEMORY_LISTENER_CALL(callback, dir, (&(MemoryRegionSection) { \
.mr = (fr)->mr, \
.address_space = (as), \
.size = (fr)->addr.size, \
.offset_within_address_space = int128_get64((fr)->addr.start), \
.readonly = (fr)->readonly, \
- }))
+ }), ##_args)
struct CoalescedMemoryRange {
AddrRange addr;
* order.
*/
struct FlatView {
+ struct rcu_head rcu;
unsigned ref;
FlatRange *ranges;
unsigned nr;
}
}
-static void memory_region_oldmmio_read_accessor(MemoryRegion *mr,
+static MemTxResult memory_region_oldmmio_read_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs)
+{
+ uint64_t tmp;
+
+ tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
+ trace_memory_region_ops_read(mr, addr, tmp, size);
+ *value |= (tmp & mask) << shift;
+ return MEMTX_OK;
+}
+
+static MemTxResult memory_region_read_accessor(MemoryRegion *mr,
hwaddr addr,
uint64_t *value,
unsigned size,
unsigned shift,
- uint64_t mask)
+ uint64_t mask,
+ MemTxAttrs attrs)
{
uint64_t tmp;
- tmp = mr->ops->old_mmio.read[ctz32(size)](mr->opaque, addr);
+ tmp = mr->ops->read(mr->opaque, addr, size);
trace_memory_region_ops_read(mr, addr, tmp, size);
*value |= (tmp & mask) << shift;
+ return MEMTX_OK;
}
-static void memory_region_read_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- unsigned shift,
- uint64_t mask)
+static MemTxResult memory_region_read_with_attrs_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs)
{
- uint64_t tmp;
+ uint64_t tmp = 0;
+ MemTxResult r;
- if (mr->flush_coalesced_mmio) {
- qemu_flush_coalesced_mmio_buffer();
- }
- tmp = mr->ops->read(mr->opaque, addr, size);
+ r = mr->ops->read_with_attrs(mr->opaque, addr, &tmp, size, attrs);
trace_memory_region_ops_read(mr, addr, tmp, size);
*value |= (tmp & mask) << shift;
+ return r;
}
-static void memory_region_oldmmio_write_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- unsigned shift,
- uint64_t mask)
+static MemTxResult memory_region_oldmmio_write_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs)
{
uint64_t tmp;
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
mr->ops->old_mmio.write[ctz32(size)](mr->opaque, addr, tmp);
+ return MEMTX_OK;
}
-static void memory_region_write_accessor(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- unsigned shift,
- uint64_t mask)
+static MemTxResult memory_region_write_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs)
{
uint64_t tmp;
- if (mr->flush_coalesced_mmio) {
- qemu_flush_coalesced_mmio_buffer();
- }
tmp = (*value >> shift) & mask;
trace_memory_region_ops_write(mr, addr, tmp, size);
mr->ops->write(mr->opaque, addr, tmp, size);
+ return MEMTX_OK;
}
-static void access_with_adjusted_size(hwaddr addr,
+static MemTxResult memory_region_write_with_attrs_accessor(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs)
+{
+ uint64_t tmp;
+
+ tmp = (*value >> shift) & mask;
+ trace_memory_region_ops_write(mr, addr, tmp, size);
+ return mr->ops->write_with_attrs(mr->opaque, addr, tmp, size, attrs);
+}
+
+static MemTxResult access_with_adjusted_size(hwaddr addr,
uint64_t *value,
unsigned size,
unsigned access_size_min,
unsigned access_size_max,
- void (*access)(MemoryRegion *mr,
- hwaddr addr,
- uint64_t *value,
- unsigned size,
- unsigned shift,
- uint64_t mask),
- MemoryRegion *mr)
+ MemTxResult (*access)(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *value,
+ unsigned size,
+ unsigned shift,
+ uint64_t mask,
+ MemTxAttrs attrs),
+ MemoryRegion *mr,
+ MemTxAttrs attrs)
{
uint64_t access_mask;
unsigned access_size;
unsigned i;
+ MemTxResult r = MEMTX_OK;
if (!access_size_min) {
access_size_min = 1;
access_mask = -1ULL >> (64 - access_size * 8);
if (memory_region_big_endian(mr)) {
for (i = 0; i < size; i += access_size) {
- access(mr, addr + i, value, access_size,
- (size - access_size - i) * 8, access_mask);
+ r |= access(mr, addr + i, value, access_size,
+ (size - access_size - i) * 8, access_mask, attrs);
}
} else {
for (i = 0; i < size; i += access_size) {
- access(mr, addr + i, value, access_size, i * 8, access_mask);
+ r |= access(mr, addr + i, value, access_size, i * 8,
+ access_mask, attrs);
}
}
+ return r;
}
static AddressSpace *memory_region_to_address_space(MemoryRegion *mr)
remain = clip.size;
fr.mr = mr;
- fr.dirty_log_mask = mr->dirty_log_mask;
+ fr.dirty_log_mask = memory_region_get_dirty_log_mask(mr);
fr.romd_mode = mr->romd_mode;
fr.readonly = readonly;
{
FlatView *view;
- qemu_mutex_lock(&flat_view_mutex);
- view = as->current_map;
+ rcu_read_lock();
+ view = atomic_rcu_read(&as->current_map);
flatview_ref(view);
- qemu_mutex_unlock(&flat_view_mutex);
+ rcu_read_unlock();
return view;
}
if (adding) {
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
- if (frold->dirty_log_mask && !frnew->dirty_log_mask) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop);
- } else if (frnew->dirty_log_mask && !frold->dirty_log_mask) {
- MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start);
+ if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
+ frold->dirty_log_mask,
+ frnew->dirty_log_mask);
+ }
+ if (frold->dirty_log_mask & ~frnew->dirty_log_mask) {
+ MEMORY_LISTENER_UPDATE_REGION(frnew, as, Reverse, log_stop,
+ frold->dirty_log_mask,
+ frnew->dirty_log_mask);
}
}
address_space_update_topology_pass(as, old_view, new_view, false);
address_space_update_topology_pass(as, old_view, new_view, true);
- qemu_mutex_lock(&flat_view_mutex);
- flatview_unref(as->current_map);
- as->current_map = new_view;
- qemu_mutex_unlock(&flat_view_mutex);
+ /* Writes are protected by the BQL. */
+ atomic_rcu_set(&as->current_map, new_view);
+ call_rcu(old_view, flatview_unref, rcu);
/* Note that all the old MemoryRegions are still alive up to this
* point. This relieves most MemoryListeners from the need to
qemu_ram_free(mr->ram_addr);
}
-static void memory_region_destructor_alias(MemoryRegion *mr)
-{
- memory_region_unref(mr->alias);
-}
-
static void memory_region_destructor_ram_from_ptr(MemoryRegion *mr)
{
qemu_ram_free_from_ptr(mr->ram_addr);
uint64_t size)
{
if (!owner) {
- owner = qdev_get_machine();
+ owner = container_get(qdev_get_machine(), "/unattached");
}
object_initialize(mr, sizeof(*mr), TYPE_MEMORY_REGION);
ObjectProperty *op;
mr->ops = &unassigned_mem_ops;
+ mr->ram_addr = RAM_ADDR_INVALID;
mr->enabled = true;
mr->romd_mode = true;
+ mr->global_locking = true;
mr->destructor = memory_region_destructor_none;
QTAILQ_INIT(&mr->subregions);
QTAILQ_INIT(&mr->coalesced);
return true;
}
-static uint64_t memory_region_dispatch_read1(MemoryRegion *mr,
- hwaddr addr,
- unsigned size)
+static MemTxResult memory_region_dispatch_read1(MemoryRegion *mr,
+ hwaddr addr,
+ uint64_t *pval,
+ unsigned size,
+ MemTxAttrs attrs)
{
- uint64_t data = 0;
+ *pval = 0;
if (mr->ops->read) {
- access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_read_accessor, mr);
+ return access_with_adjusted_size(addr, pval, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_read_accessor,
+ mr, attrs);
+ } else if (mr->ops->read_with_attrs) {
+ return access_with_adjusted_size(addr, pval, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_read_with_attrs_accessor,
+ mr, attrs);
} else {
- access_with_adjusted_size(addr, &data, size, 1, 4,
- memory_region_oldmmio_read_accessor, mr);
+ return access_with_adjusted_size(addr, pval, size, 1, 4,
+ memory_region_oldmmio_read_accessor,
+ mr, attrs);
}
-
- return data;
}
-static bool memory_region_dispatch_read(MemoryRegion *mr,
+MemTxResult memory_region_dispatch_read(MemoryRegion *mr,
hwaddr addr,
uint64_t *pval,
- unsigned size)
+ unsigned size,
+ MemTxAttrs attrs)
{
+ MemTxResult r;
+
if (!memory_region_access_valid(mr, addr, size, false)) {
*pval = unassigned_mem_read(mr, addr, size);
- return true;
+ return MEMTX_DECODE_ERROR;
}
- *pval = memory_region_dispatch_read1(mr, addr, size);
+ r = memory_region_dispatch_read1(mr, addr, pval, size, attrs);
adjust_endianness(mr, pval, size);
- return false;
+ return r;
}
-static bool memory_region_dispatch_write(MemoryRegion *mr,
+MemTxResult memory_region_dispatch_write(MemoryRegion *mr,
hwaddr addr,
uint64_t data,
- unsigned size)
+ unsigned size,
+ MemTxAttrs attrs)
{
if (!memory_region_access_valid(mr, addr, size, true)) {
unassigned_mem_write(mr, addr, data, size);
- return true;
+ return MEMTX_DECODE_ERROR;
}
adjust_endianness(mr, &data, size);
if (mr->ops->write) {
- access_with_adjusted_size(addr, &data, size,
- mr->ops->impl.min_access_size,
- mr->ops->impl.max_access_size,
- memory_region_write_accessor, mr);
+ return access_with_adjusted_size(addr, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_accessor, mr,
+ attrs);
+ } else if (mr->ops->write_with_attrs) {
+ return
+ access_with_adjusted_size(addr, &data, size,
+ mr->ops->impl.min_access_size,
+ mr->ops->impl.max_access_size,
+ memory_region_write_with_attrs_accessor,
+ mr, attrs);
} else {
- access_with_adjusted_size(addr, &data, size, 1, 4,
- memory_region_oldmmio_write_accessor, mr);
+ return access_with_adjusted_size(addr, &data, size, 1, 4,
+ memory_region_oldmmio_write_accessor,
+ mr, attrs);
}
- return false;
}
void memory_region_init_io(MemoryRegion *mr,
uint64_t size)
{
memory_region_init(mr, owner, name, size);
- mr->ops = ops;
+ mr->ops = ops ? ops : &unassigned_mem_ops;
mr->opaque = opaque;
mr->terminates = true;
- mr->ram_addr = ~(ram_addr_t)0;
}
void memory_region_init_ram(MemoryRegion *mr,
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
mr->ram_addr = qemu_ram_alloc(size, mr, errp);
+ mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
+}
+
+void memory_region_init_resizeable_ram(MemoryRegion *mr,
+ Object *owner,
+ const char *name,
+ uint64_t size,
+ uint64_t max_size,
+ void (*resized)(const char*,
+ uint64_t length,
+ void *host),
+ 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_resizeable(size, max_size, resized, mr, errp);
+ mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
}
#ifdef __linux__
mr->terminates = true;
mr->destructor = memory_region_destructor_ram;
mr->ram_addr = qemu_ram_alloc_from_file(size, mr, share, path, errp);
+ mr->dirty_log_mask = tcg_enabled() ? (1 << DIRTY_MEMORY_CODE) : 0;
}
#endif
mr->ram = true;
mr->terminates = true;
mr->destructor = memory_region_destructor_ram_from_ptr;
+ 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_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_abort);
+ mr->ram_addr = qemu_ram_alloc_from_ptr(size, ptr, mr, &error_fatal);
}
void memory_region_set_skip_dump(MemoryRegion *mr)
uint64_t size)
{
memory_region_init(mr, owner, name, size);
- memory_region_ref(orig);
- mr->destructor = memory_region_destructor_alias;
mr->alias = orig;
mr->alias_offset = offset;
}
notifier_list_init(&mr->iommu_notify);
}
-void memory_region_init_reservation(MemoryRegion *mr,
- Object *owner,
- const char *name,
- uint64_t size)
-{
- memory_region_init_io(mr, owner, &unassigned_mem_ops, mr, name, size);
-}
-
static void memory_region_finalize(Object *obj)
{
MemoryRegion *mr = MEMORY_REGION(obj);
assert(QTAILQ_EMPTY(&mr->subregions));
- assert(memory_region_transaction_depth == 0);
mr->destructor(mr);
memory_region_clear_coalescing(mr);
g_free((char *)mr->name);
return mr->skip_dump;
}
-bool memory_region_is_logging(MemoryRegion *mr)
+uint8_t memory_region_get_dirty_log_mask(MemoryRegion *mr)
+{
+ uint8_t mask = mr->dirty_log_mask;
+ if (global_dirty_log) {
+ mask |= (1 << DIRTY_MEMORY_MIGRATION);
+ }
+ return mask;
+}
+
+bool memory_region_is_logging(MemoryRegion *mr, uint8_t client)
{
- return mr->dirty_log_mask;
+ return memory_region_get_dirty_log_mask(mr) & (1 << client);
}
bool memory_region_is_rom(MemoryRegion *mr)
void memory_region_set_log(MemoryRegion *mr, bool log, unsigned client)
{
uint8_t mask = 1 << client;
+ uint8_t old_logging;
+
+ assert(client == DIRTY_MEMORY_VGA);
+ old_logging = mr->vga_logging_count;
+ mr->vga_logging_count += log ? 1 : -1;
+ if (!!old_logging == !!mr->vga_logging_count) {
+ return;
+ }
memory_region_transaction_begin();
mr->dirty_log_mask = (mr->dirty_log_mask & ~mask) | (log * mask);
bool memory_region_get_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
- assert(mr->terminates);
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
return cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
}
void memory_region_set_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size)
{
- assert(mr->terminates);
- cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size);
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
+ cpu_physical_memory_set_dirty_range(mr->ram_addr + addr, size,
+ memory_region_get_dirty_log_mask(mr));
}
bool memory_region_test_and_clear_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
- bool ret;
- assert(mr->terminates);
- ret = cpu_physical_memory_get_dirty(mr->ram_addr + addr, size, client);
- if (ret) {
- cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client);
- }
- return ret;
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
+ return cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr,
+ size, client);
}
void memory_region_reset_dirty(MemoryRegion *mr, hwaddr addr,
hwaddr size, unsigned client)
{
- assert(mr->terminates);
- cpu_physical_memory_reset_dirty(mr->ram_addr + addr, size, client);
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
+ cpu_physical_memory_test_and_clear_dirty(mr->ram_addr + addr, size,
+ client);
}
int memory_region_get_fd(MemoryRegion *mr)
return memory_region_get_fd(mr->alias);
}
- assert(mr->terminates);
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
return qemu_get_ram_fd(mr->ram_addr & TARGET_PAGE_MASK);
}
return memory_region_get_ram_ptr(mr->alias) + mr->alias_offset;
}
- assert(mr->terminates);
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
return qemu_get_ram_ptr(mr->ram_addr & TARGET_PAGE_MASK);
}
+void memory_region_ram_resize(MemoryRegion *mr, ram_addr_t newsize, Error **errp)
+{
+ assert(mr->ram_addr != RAM_ADDR_INVALID);
+
+ qemu_ram_resize(mr->ram_addr, newsize, errp);
+}
+
static void memory_region_update_coalesced_range_as(MemoryRegion *mr, AddressSpace *as)
{
FlatView *view;
}
}
+void memory_region_set_global_locking(MemoryRegion *mr)
+{
+ mr->global_locking = true;
+}
+
+void memory_region_clear_global_locking(MemoryRegion *mr)
+{
+ mr->global_locking = false;
+}
+
void memory_region_add_eventfd(MemoryRegion *mr,
hwaddr addr,
unsigned size,
memory_region_transaction_commit();
}
+void memory_region_set_size(MemoryRegion *mr, uint64_t size)
+{
+ Int128 s = int128_make64(size);
+
+ if (size == UINT64_MAX) {
+ s = int128_2_64();
+ }
+ if (int128_eq(s, mr->size)) {
+ return;
+ }
+ memory_region_transaction_begin();
+ mr->size = s;
+ memory_region_update_pending = true;
+ memory_region_transaction_commit();
+}
+
static void memory_region_readd_subregion(MemoryRegion *mr)
{
MemoryRegion *container = mr->container;
return mr->ram_addr;
}
+uint64_t memory_region_get_alignment(const MemoryRegion *mr)
+{
+ return mr->align;
+}
+
static int cmp_flatrange_addr(const void *addr_, const void *fr_)
{
const AddrRange *addr = addr_;
sizeof(FlatRange), cmp_flatrange_addr);
}
-bool memory_region_present(MemoryRegion *container, hwaddr addr)
-{
- 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)
+/* Same as memory_region_find, but it does not add a reference to the
+ * returned region. It must be called from an RCU critical section.
+ */
+static MemoryRegionSection memory_region_find_rcu(MemoryRegion *mr,
+ hwaddr addr, uint64_t size)
{
MemoryRegionSection ret = { .mr = NULL };
MemoryRegion *root;
}
range = addrrange_make(int128_make64(addr), int128_make64(size));
- view = address_space_get_flatview(as);
+ view = atomic_rcu_read(&as->current_map);
fr = flatview_lookup(view, range);
if (!fr) {
- flatview_unref(view);
return ret;
}
ret.size = range.size;
ret.offset_within_address_space = int128_get64(range.start);
ret.readonly = fr->readonly;
- memory_region_ref(ret.mr);
+ return ret;
+}
- flatview_unref(view);
+MemoryRegionSection memory_region_find(MemoryRegion *mr,
+ hwaddr addr, uint64_t size)
+{
+ MemoryRegionSection ret;
+ rcu_read_lock();
+ ret = memory_region_find_rcu(mr, addr, size);
+ if (ret.mr) {
+ memory_region_ref(ret.mr);
+ }
+ rcu_read_unlock();
return ret;
}
+bool memory_region_present(MemoryRegion *container, hwaddr addr)
+{
+ MemoryRegion *mr;
+
+ rcu_read_lock();
+ mr = memory_region_find_rcu(container, addr, 1).mr;
+ rcu_read_unlock();
+ return mr && mr != container;
+}
+
void address_space_sync_dirty_bitmap(AddressSpace *as)
{
FlatView *view;
void memory_global_dirty_log_start(void)
{
global_dirty_log = true;
+
MEMORY_LISTENER_CALL_GLOBAL(log_global_start, Forward);
+
+ /* Refresh DIRTY_LOG_MIGRATION bit. */
+ memory_region_transaction_begin();
+ memory_region_update_pending = true;
+ memory_region_transaction_commit();
}
void memory_global_dirty_log_stop(void)
{
global_dirty_log = false;
+
+ /* Refresh DIRTY_LOG_MIGRATION bit. */
+ memory_region_transaction_begin();
+ memory_region_update_pending = true;
+ memory_region_transaction_commit();
+
MEMORY_LISTENER_CALL_GLOBAL(log_global_stop, Reverse);
}
void address_space_init(AddressSpace *as, MemoryRegion *root, const char *name)
{
- if (QTAILQ_EMPTY(&address_spaces)) {
- memory_init();
- }
-
+ memory_region_ref(root);
memory_region_transaction_begin();
as->root = root;
as->current_map = g_new(FlatView, 1);
memory_region_transaction_commit();
}
-void address_space_destroy(AddressSpace *as)
+static void do_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) {
flatview_unref(as->current_map);
g_free(as->name);
g_free(as->ioeventfds);
+ memory_region_unref(as->root);
}
-bool io_mem_read(MemoryRegion *mr, hwaddr addr, uint64_t *pval, unsigned size)
+void address_space_destroy(AddressSpace *as)
{
- return memory_region_dispatch_read(mr, addr, pval, size);
-}
+ MemoryRegion *root = as->root;
-bool io_mem_write(MemoryRegion *mr, hwaddr addr,
- uint64_t val, unsigned size)
-{
- return memory_region_dispatch_write(mr, addr, val, size);
+ /* 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_unregister(as);
+
+ /* At this point, as->dispatch and as->current_map are dummy
+ * entries that the guest should never use. Wait for the old
+ * values to expire before freeing the data.
+ */
+ as->root = root;
+ call_rcu(as, do_address_space_destroy, rcu);
}
typedef struct MemoryRegionList MemoryRegionList;
const MemoryRegion *submr;
unsigned int i;
- if (!mr || !mr->enabled) {
+ if (!mr) {
return;
}
}
mon_printf(f, TARGET_FMT_plx "-" TARGET_FMT_plx
" (prio %d, %c%c): alias %s @%s " TARGET_FMT_plx
- "-" TARGET_FMT_plx "\n",
+ "-" TARGET_FMT_plx "%s\n",
base + mr->addr,
base + mr->addr
+ (int128_nz(mr->size) ?
mr->alias_offset
+ (int128_nz(mr->size) ?
(hwaddr)int128_get64(int128_sub(mr->size,
- int128_one())) : 0));
+ int128_one())) : 0),
+ mr->enabled ? "" : " [disabled]");
} else {
mon_printf(f,
- TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
+ TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s%s\n",
base + mr->addr,
base + mr->addr
+ (int128_nz(mr->size) ?
mr->romd_mode ? 'R' : '-',
!mr->readonly && !(mr->rom_device && mr->romd_mode) ? 'W'
: '-',
- memory_region_name(mr));
+ memory_region_name(mr),
+ mr->enabled ? "" : " [disabled]");
}
QTAILQ_INIT(&submr_print_queue);
QTAILQ_INIT(&ml_head);
QTAILQ_FOREACH(as, &address_spaces, address_spaces_link) {
- mon_printf(f, "%s\n", as->name);
- mtree_print_mr(mon_printf, f, as->root, 0, 0, &ml_head);
+ mon_printf(f, "address-space: %s\n", as->name);
+ mtree_print_mr(mon_printf, f, as->root, 1, 0, &ml_head);
+ mon_printf(f, "\n");
}
- mon_printf(f, "aliases\n");
/* print aliased regions */
QTAILQ_FOREACH(ml, &ml_head, queue) {
- mon_printf(f, "%s\n", memory_region_name(ml->mr));
- mtree_print_mr(mon_printf, f, ml->mr, 0, 0, &ml_head);
+ mon_printf(f, "memory-region: %s\n", memory_region_name(ml->mr));
+ mtree_print_mr(mon_printf, f, ml->mr, 1, 0, &ml_head);
+ mon_printf(f, "\n");
}
QTAILQ_FOREACH_SAFE(ml, &ml_head, queue, ml2) {
projects / qemu.git / blobdiff