Eric Blake 5d64550dc5 bitmap: Update count after a merge ...

We need an accurate count of the number of bits set in a bitmap
after a merge. In particular, since the merge operation short-circuits
a merge from an empty source, if you have bitmaps A, B, and C where
B started empty, then merge C into B, and B into A, an inaccurate
count meant that A did not get the contents of C.

In the worst case, we may falsely regard the bitmap as empty when
it has had new writes merged into it.

Fixes: be58721db
CC: qemu-stable@nongnu.org
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-id: 20181002233314.30159-1-jsnow@redhat.com
Signed-off-by: John Snow <jsnow@redhat.com>
(cherry picked from commit d1dde7149e)
*drop functional dep. on fa000f2f
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2019-04-01 20:36:21 -05:00

..

acl.c

Drop Emacs local variables lists redundant with .dir-locals.el

2016-07-12 16:19:16 +02:00

aio-posix.c

aio: Do aio_notify_accept only during blocking aio_poll

2019-03-18 21:40:40 -05:00

aio-wait.c

block: make BDRV_POLL_WHILE() re-entrancy safe

2018-03-12 11:07:37 +00:00

aio-win32.c

aio: Do aio_notify_accept only during blocking aio_poll

2019-03-18 21:40:40 -05:00

aiocb.c

block: move AioContext, QEMUTimer, main-loop to libqemuutil

2017-02-21 11:14:07 +00:00

async.c

linux-aio: properly bubble up errors from initialization

2018-06-27 13:06:34 +01:00

base64.c

include/qemu/osdep.h: Don't include qapi/error.h

2016-03-22 22:20:15 +01:00

bitmap.c

bitmap: provide to_le/from_le helpers

2017-09-22 14:11:25 +02:00

bitops.c

bitmap: remove BITOP_WORD()

2017-09-22 14:11:23 +02:00

buffer.c

qemu-common: stop including qemu/host-utils.h from qemu-common.h

2016-05-19 16:42:28 +02:00

bufferiszero.c

util: Introduce include/qemu/cpuid.h

2017-07-24 12:42:55 +01:00

cacheinfo.c

configure: Drop AIX host support

2017-09-07 19:02:30 +01:00

compatfd.c

cpus: remove ugly cast on sigbus_handler

2017-03-03 16:40:02 +01:00

coroutine-sigaltstack.c

coroutine-sigaltstack: use helper for allocating stack memory

2016-09-29 14:13:39 +02:00

coroutine-ucontext.c

build: try improve handling of clang warnings

2018-03-12 08:59:03 +01:00

coroutine-win32.c

coroutine: add a macro for the coroutine stack size

2016-09-29 14:13:39 +02:00

crc32c.c

…

cutils.c

cutils: Provide strchrnul

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

envlist.c

util: Use g_malloc/g_free in envlist.c

2017-05-07 09:57:51 +03:00

error.c

error: Implement the warn and free Error functions

2017-07-13 13:50:19 +02:00

event_notifier-posix.c

Revert "qemu: add a cleanup callback function to EventNotifier"

2018-01-24 19:20:19 +02:00

event_notifier-win32.c

Revert "qemu: add a cleanup callback function to EventNotifier"

2018-01-24 19:20:19 +02:00

fifo8.c

migration: consolidate VMStateField.start

2017-02-13 17:27:13 +00:00

getauxval.c

…

hbitmap.c

bitmap: Update count after a merge

2019-04-01 20:36:21 -05:00

hexdump.c

util: Improved qemu_hexmap() to include an ascii dump of the buffer

2016-04-06 09:52:07 +08:00

host-utils.c

host-utils: Implement unsigned quadword left/right shift and unit tests

2017-01-31 10:10:14 +11:00

id.c

util: move declarations out of qemu-common.h

2016-03-22 22:20:17 +01:00

iohandler.c

block: move AioContext, QEMUTimer, main-loop to libqemuutil

2017-02-21 11:14:07 +00:00

iov.c

util: Fix assertion in iov_copy() upon zero 'bytes' and non-zero 'offset'

2016-08-03 18:44:57 +02:00

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

qemu-thread: optimize QemuLockCnt with futexes on Linux

2017-01-16 13:25:18 +00:00

log.c

tcg: Optionally log FPU state in TCG -d cpu logging

2018-05-15 14:58:44 +01:00

main-loop.c

main-loop: drop spin_counter

2018-06-01 16:01:29 +01:00

Makefile.objs

util: implement simple iova tree

2018-05-23 17:33:58 +03:00

memfd.c

memfd: Avoid Coverity warning about integer overflow

2018-06-01 15:13:46 +02:00

mmap-alloc.c

Make qemu_mempath_getpagesize() accept NULL

2018-04-27 18:05:22 +10:00

module.c

module: Don't load the same module if requested multiple times

2016-10-07 14:14:06 +02:00

notify.c

…

osdep.c

glib: bump min required glib library version to 2.40

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

oslib-posix.c

mem: add share parameter to memory-backend-ram

2018-02-19 13:03:24 +02:00

oslib-win32.c

mem: add share parameter to memory-backend-ram

2018-02-19 13:03:24 +02:00

pagesize.c

util: move qemu_real_host_page_size/mask to osdep.h

2017-10-10 09:45:00 -07:00

path.c

util: Removed unneeded header from path.c

2017-03-14 13:26:37 +01:00

qdist.c

qdist: return "(empty)" instead of NULL when printing an empty dist

2016-08-03 18:44:56 +02:00

qemu-config.c

block: Add block-specific QDict header

2018-06-15 14:49:44 +02:00

qemu-coroutine-io.c

coroutine: move entry argument to qemu_coroutine_create

2016-07-13 13:26:02 +02:00

qemu-coroutine-lock.c

coroutine: avoid co_queue_wakeup recursion

2018-03-27 13:05:28 +01:00

qemu-coroutine-sleep.c

coroutine: simplify co_aio_sleep_ns() prototype

2017-12-19 09:25:27 +00:00

qemu-coroutine.c

coroutine: avoid co_queue_wakeup recursion

2018-03-27 13:05:28 +01:00

qemu-error.c

error: Revert unwanted change of warning messages

2017-07-24 14:16:29 +02:00

qemu-openpty.c

…

qemu-option.c

opts: remove redundant check for NULL parameter

2018-07-17 16:24:50 +02:00

qemu-progress.c

progress: Show current progress on SIGINFO

2017-04-28 18:48:11 +02:00

qemu-sockets.c

sockets: allow SocketAddress 'fd' to reference numeric file descriptors

2018-03-13 18:06:06 +00:00

qemu-thread-common.h

QemuMutex: support --enable-debug-mutex

2018-06-28 19:05:32 +02:00

qemu-thread-posix.c

qemu-thread: introduce qemu-thread-common.h

2018-06-28 19:05:31 +02:00

qemu-thread-win32.c

qemu-thread: introduce qemu-thread-common.h

2018-06-28 19:05:31 +02:00

qemu-timer-common.c

…

qemu-timer.c

timer: remove replay clock probe in deadline calculation

2018-07-30 14:00:11 +02:00

qht.c

qht: return existing entry when qht_insert fails

2018-06-15 07:42:55 -10:00

range.c

range: Replace internal representation of Range

2016-07-04 16:49:33 +03:00

rcu.c

membarrier: introduce qemu/sys_membarrier.h

2018-03-12 16:12:47 +01:00

readline.c

readline: don't free completions in readline_free()

2018-02-05 13:54:39 +01:00

stats64.c

util/stats64: Fix min/max comparisons

2017-11-15 09:34:51 +01:00

sys_membarrier.c

sys_membarrier: fix up include directives

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

systemd.c

qemu-ga: obey LISTEN_PID when using systemd socket activation

2017-03-19 11:12:12 +01:00

thread-pool.c

thread-pool: add missing qemu_bh_cancel in completion function

2017-03-17 12:54:21 +01:00

throttle.c

throttle: Assert that bkt->max is valid in throttle_compute_wait()

2017-09-26 14:46:23 +02:00

timed-average.c

Fix some typos found by codespell

2016-05-18 15:04:27 +03:00

trace-events

util: Introduce vfio helpers

2018-02-08 09:22:03 +08:00

unicode.c

util: move declarations out of qemu-common.h

2016-03-22 22:20:17 +01:00

uri.c

cutils: Provide strchrnul

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

uuid.c

util: add is_equal to UUID API

2017-12-20 22:01:24 +08:00

vfio-helpers.c

vfio-helpers: Fix qemu_vfio_open_pci() crash

2019-04-01 20:36:21 -05:00