Vladimir Sementsov-Ogievskiy b3b76fc643 util/iov: improve qemu_iovec_is_zero ...

We'll need to check a part of qiov soon, so implement it now.

Optimization with align down to 4 * sizeof(long) is dropped due to:
1. It is strange: it aligns length of the buffer, but where is a
   guarantee that buffer pointer is aligned itself?
2. buffer_is_zero() is a better place for optimizations and it has
   them.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit f76889e7b9)
*prereq for 292d06b9
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2019-11-12 11:59:58 -06:00

..

aio-posix.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

aio-wait.c

block: Use a single global AioWait

2018-09-25 15:50:15 +02:00

aio-win32.c

aio-posix: Fix concurrent aio_poll/set_fd_handler.

2019-01-14 14:09:41 +00:00

aiocb.c

…

async.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

atomic64.c

util: add atomic64

2018-10-02 18:47:55 +02:00

base64.c

…

bitmap.c

bitmap: Add bitmap_copy_with_{src|dst}_offset()

2019-07-15 15:39:02 +02:00

bitops.c

avoid TABs in files that only contain a few

2019-01-11 15:46:56 +01:00

buffer.c

…

bufferiszero.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

cacheinfo.c

util/cacheinfo: Use uint64_t on LLP64 model to satisfy Windows ARM64

2019-05-07 12:55:03 +01:00

compatfd.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

coroutine-sigaltstack.c

…

coroutine-ucontext.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

coroutine-win32.c

…

crc32c.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

cutils.c

cutils: remove one unnecessary pointer operation

2019-07-15 15:39:02 +02:00

drm.c

util: promote qemu_egl_rendernode_open() to libqemuutil

2018-08-27 10:51:44 +02:00

envlist.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

error.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

event_notifier-posix.c

…

event_notifier-win32.c

…

fifo8.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

filemonitor-inotify.c

filemon: fix watch IDs to avoid potential wraparound issues

2019-04-02 13:52:02 +01:00

filemonitor-stub.c

filemon: fix watch IDs to avoid potential wraparound issues

2019-04-02 13:52:02 +01:00

getauxval.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

guest-random.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

hbitmap.c

hbitmap: handle set/reset with zero length

2019-11-04 08:31:55 -06:00

hexdump.c

…

host-utils.c

…

id.c

qemu-common: Move qemu_isalnum() etc. to qemu/ctype.h

2019-06-11 20:22:09 +02:00

iov.c

util/iov: improve qemu_iovec_is_zero

2019-11-12 11:59:58 -06:00

iova-tree.c

util: remove redundant include of glib.h and add osdep.h

2018-06-29 12:22:28 +01:00

keyval.c

qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF

2018-05-04 08:27:53 +02:00

lockcnt.c

…

log.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

main-loop.c

util: merge main-loop.c and iohandler.c

2019-07-15 11:20:43 +02:00

Makefile.objs

util: merge main-loop.c and iohandler.c

2019-07-15 11:20:43 +02:00

memfd.c

memfd: improve error messages

2019-03-11 17:17:01 -03:00

mmap-alloc.c

util/mmap-alloc: support MAP_SYNC in qemu_ram_mmap()

2019-04-25 14:17:36 -03:00

module.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

notify.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

osdep.c

slirp: prefer c99 types over BSD kind

2019-02-07 15:49:08 +02:00

oslib-posix.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

oslib-win32.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

pagesize.c

…

path.c

util/path: Do not cache all filenames at startup

2019-06-24 22:19:30 +02:00

qdist.c

…

qemu-config.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-coroutine-io.c

…

qemu-coroutine-lock.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-coroutine-sleep.c

qemu-coroutine-sleep: drop CoSleepCB

2019-01-24 10:05:16 +00:00

qemu-coroutine.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-error.c

monitor error: Make printf()-like functions return a value

2019-04-18 22:18:59 +02:00

qemu-openpty.c

…

qemu-option.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-print.c

qemu-print: New qemu_fprintf(), qemu_vfprintf()

2019-04-18 22:18:59 +02:00

qemu-progress.c

…

qemu-sockets.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-thread-common.h

Clean up includes

2018-12-20 10:29:08 +01:00

qemu-thread-posix.c

qemu-thread: Don't block SEGV, ILL and FPE

2019-01-08 12:34:46 +00:00

qemu-thread-win32.c

build-sys: build with Vista API by default

2019-01-11 13:57:25 +01:00

qemu-timer-common.c

…

qemu-timer.c

qemu-timer: avoid checkpoints for virtual clock timers in external subsystems

2018-10-19 13:44:03 +02:00

qht.c

qht: constify arguments to some internal functions

2018-09-26 08:55:54 -07:00

qsp.c

qsp: Simplify how qsp_report() prints

2019-04-18 22:18:59 +02:00

range.c

Don't talk about the LGPL if the file is licensed under the GPL

2019-01-30 10:51:20 +01:00

rcu.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

readline.c

qemu-common: Move qemu_isalnum() etc. to qemu/ctype.h

2019-06-11 20:22:09 +02:00

stats64.c

…

sys_membarrier.c

sys_membarrier: fix up include directives

2018-04-05 14:37:38 +02:00

systemd.c

…

thread-pool.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

throttle.c

…

timed-average.c

…

trace-events

filemon: fix watch IDs to avoid potential wraparound issues

2019-04-02 13:52:02 +01:00

unicode.c

json: Reject invalid UTF-8 sequences

2018-08-24 20:26:37 +02:00

uri.c

cutils: Provide strchrnul

2018-06-29 12:32:10 +02:00

uuid.c

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

vfio-helpers.c

exec: Change RAMBlockIterFunc definition

2019-03-06 10:49:17 +00:00