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From: | Paolo Bonzini |
Subject: | Re: [Qemu-devel] [RFC v2 3/6] memory: support unmapping of MemoryRegion mapped into HVA parent |
Date: | Wed, 17 Jun 2015 10:14:00 +0200 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 |
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
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