On Fri, May 27, 2011 at 11:36 AM, Sasha Levin <levinsasha928@xxxxxxxxx> wrote: > ioeventfd is way provided by KVM to receive notifications about > reads and writes to PIO and MMIO areas within the guest. > > Such notifications are usefull if all we need to know is that > a specific area of the memory has been changed, and we don't need > a heavyweight exit to happen. > > The implementation uses epoll to scale to large number of ioeventfds. > > Signed-off-by: Sasha Levin <levinsasha928@xxxxxxxxx> > --- > tools/kvm/Makefile | 1 + > tools/kvm/include/kvm/ioeventfd.h | 27 ++++++++ > tools/kvm/ioeventfd.c | 127 +++++++++++++++++++++++++++++++++++++ > tools/kvm/kvm-run.c | 4 + > 4 files changed, 159 insertions(+), 0 deletions(-) > create mode 100644 tools/kvm/include/kvm/ioeventfd.h > create mode 100644 tools/kvm/ioeventfd.c Did you run any benchmarks? Stefan -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
