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John Snow be58721dbf hbitmap: add hbitmap_merge 
We add a bitmap merge operation to assist in error cases
where we wish to combine two bitmaps together.

This is algorithmically O(bits) provided HBITMAP_LEVELS remains
constant. For a full bitmap on a 64bit machine:
sum(bits/64^k, k, 0, HBITMAP_LEVELS) ~= 1.01587 * bits

We may be able to improve running speed for particularly sparse
bitmaps by using iterators, but the running time for dense maps
will be worse.

We present the simpler solution first, and we can refine it later
if needed.

Signed-off-by: John Snow <jsnow@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1429314609-29776-8-git-send-email-jsnow@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-04-28 15:36:10 +02:00
audio
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backends
hostmem: Prevent removing an in-use memory backend
2015-04-01 10:06:38 +02:00
block
qmp: Add block-dirty-bitmap-add and block-dirty-bitmap-remove
2015-04-28 15:36:10 +02:00
bsd-user
cpu: Make cpu_init() return QOM CPUState object
2015-03-10 17:33:51 +01:00
default-configs
hw/usb: Include USB files only if necessary
2015-03-18 11:50:47 +01:00
disas
cris: remove unused cris_cond15 declarations
2015-03-19 11:11:55 +03:00
docs
docs: incremental backup documentation
2015-04-28 15:36:10 +02:00
dtc @ bc895d6d09
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fpu
…
fsdev
Fix typos in comments
2015-03-19 11:30:37 +03:00
gdb-xml
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hw
m25p80: fix s->blk usage before assignment
2015-04-28 15:36:09 +02:00
include
hbitmap: add hbitmap_merge
2015-04-28 15:36:10 +02:00
libcacard
…
libdecnumber
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linux-headers
synchronize Linux headers to 4.0-rc3
2015-03-10 09:26:22 +01:00
linux-user
rcu: do not create thread in pthread_atfork callback
2015-04-01 10:06:38 +02:00
migration
qapi: Add optional field "name" to block dirty bitmap
2015-04-28 15:36:10 +02:00
net
net: synchronize net_host_device_remove with host_net_remove_completion
2015-03-12 19:59:39 +00:00
pc-bios
pseries: Update SLOF firmware image to qemu-slof-20150313
2015-03-25 22:49:45 +01:00
pixman @ 87eea99e44
…
po
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qapi
qmp: Add block-dirty-bitmap-add and block-dirty-bitmap-remove
2015-04-28 15:36:10 +02:00
qga
qga: fitering out -fstack-protector-strong
2015-04-02 15:57:27 +02:00
qobject
…
qom
qom: Add can_be_deleted callback to UserCreatableClass
2015-04-01 10:06:38 +02:00
roms
pseries: Update SLOF firmware image to qemu-slof-20150313
2015-03-25 22:49:45 +01:00
scripts
scripts: add 'qemu coroutine' command to qemu-gdb.py
2015-04-28 15:36:09 +02:00
slirp
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stubs
pci, pc, virtio fixes and cleanups
2015-03-09 09:14:28 +00:00
sysconfigs/target
…
target-alpha
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-arm
Allow ARMv8 SCR.SMD updates
2015-04-26 16:49:26 +01:00
target-cris
cris: remove unused cris_cond15 declarations
2015-03-19 11:11:55 +03:00
target-i386
X86 queue, 2015-04-27 (v2)
2015-04-28 12:22:20 +01:00
target-lm32
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-m68k
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-microblaze
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-mips
trivial patches for 2015-03-19
2015-03-19 14:10:20 +00:00
target-moxie
target-moxie: Fix warnings from Sparse (one-bit signed bitfield)
2015-03-19 11:11:55 +03:00
target-openrisc
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-ppc
Convert (ffs(val) - 1) to ctz32(val)
2015-04-28 15:36:08 +02:00
target-s390x
Final batch of s390x enhancements/fixes for 2.3:
2015-03-16 11:44:55 +00:00
target-sh4
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-sparc
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-tricore
target-tricore: Fix check which was always false
2015-04-04 09:45:59 +03:00
target-unicore32
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
target-xtensa
tcg: Change translator-side labels to a pointer
2015-03-13 12:28:18 -07:00
tcg
tcg/tcg-op.c: Fix ld/st of 64 bit values on 32-bit bigendian hosts
2015-04-09 10:51:10 +01:00
tests
qemu-iotests: Test that "stop" doesn't drain block jobs
2015-04-28 15:36:09 +02:00
trace
Remove superfluous '\n' around error_report()
2015-03-10 08:15:33 +03:00
ui
spice: misc fixes.
2015-04-27 20:00:57 +01:00
util
hbitmap: add hbitmap_merge
2015-04-28 15:36:10 +02:00
.exrc
…
.gitignore
gitignore: Ignore more .pod files.
2015-04-04 09:45:59 +03:00
.gitmodules
…
.mailmap
…
.travis.yml
…
accel.c
…
aio-posix.c
AioContext: acquire/release AioContext during aio_poll
2015-04-28 15:36:08 +02:00
aio-win32.c
AioContext: acquire/release AioContext during aio_poll
2015-04-28 15:36:08 +02:00
arch_init.c
migration: remove last_sent_block from save_page_header
2015-03-26 15:31:46 +01:00
async.c
iothread: release iothread around aio_poll
2015-04-28 15:36:08 +02:00
balloon.c
balloon: improve error msg when adding second device
2015-04-24 14:18:05 -04:00
block.c
block: Introduce bdrv_dirty_bitmap_granularity()
2015-04-28 15:36:10 +02:00
blockdev-nbd.c
nbd: Fix up comment after commit e140177
2015-03-25 13:38:07 +01:00
blockdev.c
qmp: Add block-dirty-bitmap-add and block-dirty-bitmap-remove
2015-04-28 15:36:10 +02:00
blockjob.c
blockjob: Allow nested pause
2015-04-28 15:36:09 +02:00
bootdevice.c
misc: fix typos in copyright declaration
2015-03-26 14:21:43 +01:00
bt-host.c
…
bt-vhci.c
…
Changelog
…
CODING_STYLE
…
configure
Revert seccomp tests that allow it to be used on non-x86 architectures
2015-04-13 12:28:48 +01:00
COPYING
…
COPYING.LIB
…
coroutine-gthread.c
…
coroutine-sigaltstack.c
…
coroutine-ucontext.c
…
coroutine-win32.c
…
cpu-exec.c
…
cpus.c
cpus: Don't kick un-realized cpus.
2015-03-25 13:38:07 +01:00
cputlb.c
Add MemTxAttrs to the IOTLB
2015-04-26 16:49:24 +01:00
device_tree.c
machine: query phandle-start machine property
2015-03-11 18:17:11 +01:00
device-hotplug.c
…
disas.c
…
dma-helpers.c
exec.c: Make address_space_rw take transaction attributes
2015-04-26 16:49:24 +01:00
dump.c
…
exec.c
exec.c: Capture the memory attributes for a watchpoint hit
2015-04-26 16:49:24 +01:00
gdbstub.c
gdbstub: avoid possible NULL pointer dereference
2015-03-10 08:15:34 +03:00
HACKING
…
hmp-commands.hx
monitor: Make client_migrate_info synchronous
2015-04-27 12:46:57 +02:00
hmp.c
Revert "hmp: fix crash in 'info block -n -v'"
2015-04-28 15:36:09 +02:00
hmp.h
qom: Implement qom-set HMP command
2015-03-17 14:31:15 +01:00
iohandler.c
…
ioport.c
exec.c: Make address_space_rw take transaction attributes
2015-04-26 16:49:24 +01:00
iothread.c
iothread: release iothread around aio_poll
2015-04-28 15:36:08 +02:00
kvm-all.c
Convert ffs() != 0 callers to ctz32()
2015-04-28 15:36:08 +02:00
kvm-stub.c
…
LICENSE
…
main-loop.c
…
MAINTAINERS
MAINTAINERS: Add Fam Zheng as Null block driver maintainer
2015-04-28 15:36:09 +02:00
Makefile
Use $(MAKE) for recursive make
2015-04-02 15:58:39 +02:00
Makefile.objs
…
Makefile.target
…
memory_mapping.c
…
memory.c
memory: Replace io_mem_read/write with memory_region_dispatch_read/write
2015-04-26 16:49:23 +01:00
module-common.c
…
monitor.c
target-arm queue:
2015-04-28 10:31:03 +01:00
nbd.c
nbd: Drop unexpected data for NBD_OPT_LIST
2015-03-18 12:07:16 +01:00
numa.c
numa: Print warning if no node is assigned to a CPU
2015-03-19 16:20:15 -03:00
os-posix.c
rcu: do not create thread in pthread_atfork callback
2015-04-01 10:06:38 +02:00
os-win32.c
…
page_cache.c
…
qapi-schema.json
migration: Convert 'status' of MigrationInfo to use an enum type
2015-03-17 15:20:37 +01:00
qdev-monitor.c
qom: Implement info qom-tree HMP command
2015-03-17 14:31:21 +01:00
qdict-test-data.txt
…
qemu-bridge-helper.c
…
qemu-char.c
…
qemu-coroutine-io.c
coroutine-io: Return -errno in case of error
2015-03-18 12:07:21 +01:00
qemu-coroutine-lock.c
…
qemu-coroutine-sleep.c
…
qemu-coroutine.c
coroutine: Clean up qemu_coroutine_enter()
2015-03-09 11:11:59 +01:00
qemu-doc.texi
raw-posix: Deprecate host floppy passthrough
2015-03-19 11:43:02 +01:00
qemu-img-cmds.hx
…
qemu-img.c
qemu-img convert: Rewrite copying logic
2015-04-28 15:36:09 +02:00
qemu-img.texi
…
qemu-io-cmds.c
…
qemu-io.c
…
qemu-log.c
…
qemu-nbd.c
nbd: Set block size to BDRV_SECTOR_SIZE
2015-03-18 12:07:01 +01:00
qemu-nbd.texi
…
qemu-options-wrapper.h
…
qemu-options.h
…
qemu-options.hx
Block patches for 2.3.0-rc1
2015-03-19 17:47:08 +00:00
qemu-seccomp.c
…
qemu-tech.texi
…
qemu-timer.c
…
qemu.nsi
…
qemu.sasl
…
qjson.c
…
qmp-commands.hx
qmp: Add block-dirty-bitmap-add and block-dirty-bitmap-remove
2015-04-28 15:36:10 +02:00
qmp.c
qom: Add can_be_deleted callback to UserCreatableClass
2015-04-01 10:06:38 +02:00
qtest.c
…
README
…
rules.mak
…
savevm.c
error: Replace error_report() & error_free() with error_report_err()
2015-03-19 11:11:55 +03:00
softmmu_template.h
Add MemTxAttrs to the IOTLB
2015-04-26 16:49:24 +01:00
spice-qemu-char.c
…
tcg-runtime.c
…
tci.c
…
thread-pool.c
thread-pool: clean up thread_pool_completion_bh()
2015-04-28 15:36:09 +02:00
thunk.c
…
tpm.c
tpm: Remove superfluous '\n' around error_report()
2015-03-10 08:15:33 +03:00
trace-events
s390x/kvm: trace all SIGP orders
2015-03-10 09:26:22 +01:00
translate-all.c
target-i386: remove superfluous TARGET_HAS_SMC macro
2015-04-04 09:45:59 +03:00
translate-all.h
…
user-exec.c
user-exec.c: fix build on NetBSD/sparc64 and NetBSD/arm
2015-03-13 15:57:00 +00:00
VERSION
Open 2.4 development tree
2015-04-25 22:05:07 +01:00
version.rc
…
vl.c
Avoid crashing on multiple -incoming
2015-03-26 15:31:46 +01:00
xen-common-stub.c
…
xen-common.c
…
xen-hvm-stub.c
xen: Remove xen_cmos_set_s3_resume()
2015-03-10 08:15:33 +03:00
xen-hvm.c
…
xen-mapcache.c
…

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team
Description
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Readme 404 MiB
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