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Diffstat (limited to 'memory.c')
-rw-r--r--memory.c97
1 files changed, 60 insertions, 37 deletions
diff --git a/memory.c b/memory.c
index d14c6dec1d..61d66e4441 100644
--- a/memory.c
+++ b/memory.c
@@ -39,7 +39,7 @@ static bool memory_region_update_pending;
static bool ioeventfd_update_pending;
static bool global_dirty_log = false;
-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 +113,7 @@ 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 +127,17 @@ 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); \
} \
@@ -217,6 +214,7 @@ struct FlatRange {
bool romd_mode;
bool readonly;
bool nonvolatile;
+ int has_coalesced_range;
};
#define FOR_EACH_FLAT_RANGE(var, view) \
@@ -650,6 +648,7 @@ static void render_memory_region(FlatView *view,
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) {
@@ -850,6 +849,49 @@ 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,
@@ -882,6 +924,7 @@ 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);
}
@@ -889,7 +932,9 @@ static void address_space_update_topology_pass(AddressSpace *as,
} else if (frold && frnew && flatrange_equal(frold, frnew)) {
/* In both and unchanged (except logging may have changed) */
- if (adding) {
+ if (!adding) {
+ flat_range_coalesced_io_del(frold, as);
+ } else {
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, region_nop);
if (frnew->dirty_log_mask & ~frold->dirty_log_mask) {
MEMORY_LISTENER_UPDATE_REGION(frnew, as, Forward, log_start,
@@ -901,6 +946,7 @@ static void address_space_update_topology_pass(AddressSpace *as,
frold->dirty_log_mask,
frnew->dirty_log_mask);
}
+ flat_range_coalesced_io_add(frnew, as);
}
++iold;
@@ -910,6 +956,7 @@ 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;
@@ -2136,34 +2183,12 @@ 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);
@@ -2663,8 +2688,7 @@ 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) {
@@ -2676,8 +2700,7 @@ 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) {
@@ -2767,7 +2790,7 @@ 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)
generated by cgit v1.2.3 (git 2.26.2) at 2025-02-24 03:48:22 +0000