Re: [kvm-devel] [PATCH 1/3] Use signalfd() in io-thread

[Avi K. <av...@qu...>]

Anthony Liguori wrote:
> This patch reworks the IO thread to use signalfd() instead of sigtimedwait().
> This will eliminate the need to use SIGIO everywhere.  In this version of the
> patch, we use signalfd() when it's available.  When it isn't available, we
> create a separate thread and use sigwaitinfo() to simulate signalfd().
>
> We cannot handle thread-specific signals with signalfd() emulation so also
> replace SIGUSR1 notifications to the io-thread with an eventfd.  Since eventfd
> isn't always available, use pipe() to emulate eventfd.
>   

Please break the SIGUSR1 changes into a separate patch.  Ditto with *fd 
syscall compat.

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