Re: [PATCH 05/24] compatfd is included before, and it is compiled unconditionally

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On Thu, Oct 01, 2009 at 01:58:10PM +0200, Juan Quintela wrote:
> Discused with Anthony about it.  signalfd is complicated for qemu
> upstream (too difficult to use properly), and eventfd ...  The current
> eventfd emulation is worse than the pipe code that it substitutes.
> 
> His suggestion here was to create a new abstraction with an API like:
> 
> push_notify()
> 
> pop_notify()
> 
> and then you can implement it with eventfd() pipes/whatever.
> 
> What was missing for you of compatfd: qemu_eventfd/qemu_signalfd?
> Do a push_notify()/pop_notify() work for you?

I don't desperately want to use it myself anyway.  I just want to get
rid of the highly annoyind spurious differences in the AIO code due
to use of compatfd.  I would be perfectly fine with just killing this
use of eventfd in qemu-kvm.
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