On 08/15/2011 01:27 PM, Umesh Deshpande wrote:
Yes, the mru list patch would obviate the need of holding the ram_list mutex in qemu_get_ram_ptr.
Feel free to take it and complete it with locking then!
Also, I was planning to protect the whole migration thread with iothread mutex, and ram_list mutex. (i.e. holding ram_list mutex while sleeping between two iterations, when we release iothread mutex). This will prevent the memslot block removal altogether during the migration. Do you see any problem with this?
No, indeed holding the ram_list mutex through all the migration "fixes" the problems with ram_lists removing during migration. I guess whoever will implement memory hotplug, will find a way around it. :)
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