On 07/14/2011 03:30 PM, Anthony Liguori wrote:
Does this mean that the following code is sometimes executed without
qemu_mutex? I don't think any of it is thread safe.
That was my reaction too.
I think the most rational thing to do is have a separate thread and a
pair of producer/consumer queues.
The I/O thread can push virtual addresses and sizes to the queue for
the migration thread to compress/write() to the fd. The migration
thread can then push sent regions onto a separate queue for the I/O
thread to mark as dirty.
Even virtual addresses are not safe enough, because of hotunplug.
Without some kind of locking, you have to copy the data.
--
error compiling committee.c: too many arguments to function
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