> > quick question: Can a resume from a qemu_coroutine_yield happen in a > > different thread? > > > > Well, it can, since I'm seeing it happen, but is that okay or a bug? > > Yes, it can happen. At least for devices like IDE where a request is > started during a vmexit (MMIO or I/O port write), the coroutine will > usually begin its life in the vcpu thread and then move to the main loop > thread. > > This is not a problem because the vcpu thread holds the BQL while > running the request coroutine.
Isn't that a problem when using QemuRecMutex, for example: qemu_rec_mutex_lock(lock) ... qemu_coroutine_yield() // wait for something // we are now inside a different thread qemu_rec_mutex_unlock(lock) // Crash - wrong thread!! ?
