fridtjof/qemu-cr16
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

memory: Add global-locking property to memory regions

Browse source 
This introduces the memory region property "global_locking". It is true
by default. By setting it to false, a device model can request BQL-free
dispatching of region accesses to its r/w handlers. The actual BQL
break-up will be provided in a separate patch.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Frederic Konrad <fred.konrad@greensocs.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1434646046-27150-4-git-send-email-pbonzini@redhat.com>
This commit is contained in:
Jan Kiszka 2015-06-18 18:47:20 +02:00 • committed by Paolo Bonzini
parent afbe70535f
commit 196ea13104
2 changed files with 37 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

11
memory.c
View file

@ -1012,6 +1012,7 @@ static void memory_region_initfn(Object *obj)
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);
@ -1646,6 +1647,16 @@ void memory_region_clear_flush_coalesced(MemoryRegion *mr)
}
}
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,