Stefan Hajnoczi <[email protected]> 于2022年5月31日周二 19:31写道： > > On Tue, May 31, 2022 at 06:50:11PM +0800, Sam Li wrote: > > Linux recently added a new io_uring(7) optimization API that QEMU > > doesn't take advantage of yet. The liburing library that QEMU uses > > has added a corresponding new API calling io_uring_register_ring_fd(). > > When this API is called after creating the ring, the io_uring_submit() > > library function passes a flag to the io_uring_enter(2) syscall > > allowing it to skip the ring file descriptor fdget()/fdput() > > operations. This saves some CPU cycles. > > > > Signed-off-by: Sam Li <[email protected]> > > --- > > block/io_uring.c | 12 +++++++++++- > > meson.build | 1 + > > 2 files changed, 12 insertions(+), 1 deletion(-) > > Thanks, applied to my block tree: > https://gitlab.com/stefanha/qemu/commits/block >
Great! Sorry about the mistake before. I'm flushed. > Stefan
