On Tue, Jan 25, 2011 at 2:13 PM, Michael S. Tsirkin <m...@redhat.com> wrote: > On Tue, Jan 25, 2011 at 01:58:08PM +0000, Stefan Hajnoczi wrote: >> It is not possible to use virtio-ioeventfd when building without an I/O >> thread. We rely on a signal to kick us out of vcpu execution. Timers >> and AIO use SIGALRM and SIGUSR2 respectively. Unfortunately eventfd >> does not support O_ASYNC (SIGIO) so eventfd cannot be used in a signal >> driven manner. >> >> Signed-off-by: Stefan Hajnoczi <stefa...@linux.vnet.ibm.com> > > I'd rather have the CONFIG_ ... mess contained in kvm-all.c > which tests CONFIG_IOTHREAD anyway, than spread out > to devices. Can we make kvm_has_many_ioeventfds check this?
Good idea. Stefan
