On 09/06/2015 12:08, Igor Mammedov wrote: > > 3. until #2 is done we can't allow to map another memory region in > current flatview at the same range, hence need to keep list of > still active HVA ranges so we could check at memory_region_add_subregion() > time that new mapping is allowed. => adding "Error **errp" > to memory_region_add_subregion() for reporting fail.
No, we cannot do that. memory_region_add_subregion cannot fail. The RCU mechanism is transparent. Paolo
