On 8/27/07, Avi Kivity <[EMAIL PROTECTED]> wrote: > Anthony Liguori wrote: > > On Mon, 2007-08-27 at 20:36 +0300, Avi Kivity wrote: > >> userspace can > >> attach a signal to the eventfd if it wants a synchronous exit (does > >> eventfd allow fcntl(F_SETOWN)?) > > > > Which would address the latency issue nicely. Looking at the fs code, > > it looks like eventfd shouldn't have to do anything special for it. > > I'm not sure now. Which thread will be selected for accepting the > signal?
It's not specified. > if it isn't guaranteed to be the current thread, we're back > with scheduler involvement, and possibly cacheline bouncing. It's possible to use pthread_sigmask() to block the signal on all threads but one. But this would require changing the rest of the emulator; why not just select() the fd in a dedicated thread? Luca ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
