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memory: Remove code for mr->may_overlap 

The collision check does nothing and hasn't been used. Remove the
variable together with related code.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-Id: <1458900629-2334-2-git-send-email-famz@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Fam Zheng 2016-03-25 18:10:28 +08:00 committed by Paolo Bonzini
parent ab0a995608
commit b613597819
2 changed files with 0 additions and 36 deletions
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1
include/exec/memory.h
View File

@ -187,7 +187,6 @@ struct MemoryRegion {
MemoryRegion *alias;
hwaddr alias_offset;
int32_t priority;
bool may_overlap;
QTAILQ_HEAD(subregions, MemoryRegion) subregions;
QTAILQ_ENTRY(MemoryRegion) subregions_link;
QTAILQ_HEAD(coalesced_ranges, CoalescedMemoryRange) coalesced;

35
memory.c
View File

@ -1057,13 +1057,6 @@ static void memory_region_get_priority(Object *obj, Visitor *v,
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)
{
@ -1101,10 +1094,6 @@ static void memory_region_initfn(Object *obj)
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, */
@ -1864,34 +1853,12 @@ void memory_region_del_eventfd(MemoryRegion *mr,
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);
@ -1918,7 +1885,6 @@ void memory_region_add_subregion(MemoryRegion *mr,
hwaddr offset,
MemoryRegion *subregion)
{
subregion->may_overlap = false;
subregion->priority = 0;
memory_region_add_subregion_common(mr, offset, subregion);
}
@ -1928,7 +1894,6 @@ void memory_region_add_subregion_overlap(MemoryRegion *mr,
MemoryRegion *subregion,
int priority)
{
subregion->may_overlap = true;
subregion->priority = priority;
memory_region_add_subregion_common(mr, offset, subregion);
}