diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-09 11:44:25 +0100 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-12-17 17:33:48 +0100 |
commit | 612263cf33062f7441a5d0e3b37c65991fdc3210 (patch) | |
tree | b2f6e1e60a93546ac7e96647b67b113b102841fb /include/exec | |
parent | a676854f3447019c7c4b005ab6aece905fccfddd (diff) |
memory: avoid unnecessary object_ref/unref
For the common case of DMA into non-hotplugged RAM, it is unnecessary
but expensive to do object_ref/unref. Add back an owner field to
MemoryRegion, so that these memory regions can skip the reference
counting.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/exec')
-rw-r--r-- | include/exec/memory.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 5b1fd123cd..24b7cba737 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -172,6 +172,7 @@ struct MemoryRegion { bool global_locking; uint8_t dirty_log_mask; ram_addr_t ram_addr; + Object *owner; const MemoryRegionIOMMUOps *iommu_ops; const MemoryRegionOps *ops; |