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Peter Lieven 41a259bd2b cutils: add a function to find non-zero content in a buffer
this adds buffer_find_nonzero_offset() which is a SSE2/Altivec
optimized function that searches for non-zero content in a
buffer.

the function starts full unrolling only after the first few chunks have
been checked one by one. analyzing real memory page data has revealed
that non-zero pages are non-zero within the first 256-512 bits in
most cases. as this function is also heavily used to check for zero memory
pages this tweak has been made to avoid the high setup costs of the fully
unrolled check for non-zero pages.

due to the optimizations used in the function there are restrictions
on buffer address and search length. the function
can_use_buffer_find_nonzero_content() can be used to check if
the function can be used safely.

Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2013-03-26 13:32:28 +01:00
audio
backends chardev: add braille support to qapi 2013-03-13 10:27:46 +01:00
block block: Add options QDict to bdrv_file_open() prototypes (fix MinGW build) 2013-03-25 09:53:04 +01:00
bsd-user qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
default-configs VMXNET3 device implementation 2013-03-25 11:13:10 +01:00
disas Add moxie disassembler 2013-03-23 14:25:41 +00:00
docs Fix typos and misspellings 2013-03-22 13:25:07 +01:00
fpu
fsdev virtfs-proxy-helper: Fix unchecked strdup() by conv. to g_strdup() 2013-01-30 11:14:46 +01:00
gdb-xml
hw savevm: Add VMSTATE_UINTTL_EQUAL helper 2013-03-26 13:30:49 +01:00
include cutils: add a function to find non-zero content in a buffer 2013-03-26 13:32:28 +01:00
ldscripts
libcacard libcacard: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
linux-headers linux-headers: resync from mainline to add ARM KVM headers 2013-03-05 00:34:40 +00:00
linux-user linux-user/syscall.c: Don't warn about unimplemented get_robust_list 2013-03-11 14:35:08 +02:00
net net: increase buffer size to accommodate Jumbo frame pkts 2013-03-25 11:14:07 +01:00
pc-bios ipxe: update binaries 2013-03-25 09:13:18 +01:00
pixman@97336fad32
po ui/gtk: Use menu item from stock for full screen 2013-02-22 14:49:00 -06:00
qapi qapi: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
qga Fix typos and misspellings 2013-03-22 13:25:07 +01:00
QMP
qobject Add qdict_clone_shallow() 2013-03-15 16:07:49 +01:00
qom exec: Pass CPUState to cpu_reset_interrupt() 2013-03-12 10:35:55 +01:00
roms ipxe: disable two second timeout 2013-03-25 09:07:40 +01:00
scripts make_device_config.sh: Emit dependency file to directory where included 2013-03-09 12:00:03 +00:00
slirp MinGW: Replace setsockopt by qemu_setsocketopt 2013-03-22 13:14:48 +01:00
stubs stubs: Add a vmstate_dummy struct for CONFIG_USER_ONLY 2013-03-12 10:35:54 +01:00
sysconfigs/target
target-alpha cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-arm target-arm: Override do_interrupt for ARMv7-M profile 2013-03-12 10:35:55 +01:00
target-cris cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-i386 target-i386: Don't modify env->eflags around cpu_dump_state 2013-03-23 14:30:12 +00:00
target-lm32 target-lm32: use HELPER() macro 2013-03-18 19:40:34 +01:00
target-m68k cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-microblaze microblaze: Ignore non-cpu accesses to unmapped areas 2013-03-19 17:34:47 +01:00
target-mips target-mips: fix rndrashift_short_acc and code for EXTR_ instructions 2013-03-17 01:06:34 +01:00
target-moxie Add moxie target code 2013-03-23 14:25:41 +00:00
target-openrisc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-ppc target-ppc: Use NARROW_MODE macro for tlbie 2013-03-22 15:28:54 +01:00
target-s390x Fix typos and misspellings 2013-03-22 13:25:07 +01:00
target-sh4 cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-sparc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-unicore32 cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-xtensa cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
tcg tcg-optimize: Fold sub r,0,x to neg r,x 2013-03-23 14:31:03 +00:00
tests Merge branch 'for-upstream' of git://github.com/mwalle/qemu 2013-03-23 14:23:26 +00:00
tpm Add support for cancelling of a TPM command 2013-03-12 13:40:55 -05:00
trace trace: deal with deprecated glib thread functions 2013-02-12 16:26:44 -06:00
ui gtk: Release modifier when graphic console loses keyboard focus 2013-03-25 13:10:40 -05:00
util cutils: add a function to find non-zero content in a buffer 2013-03-26 13:32:28 +01:00
.exrc
.gitignore gitignore: ignore more files 2013-03-22 16:09:46 +01:00
.gitmodules
.mailmap
aio-posix.c aio: support G_IO_HUP and G_IO_ERR 2013-02-21 16:17:31 -06:00
aio-win32.c
arch_init.c move vector definitions to qemu-common.h 2013-03-26 13:30:49 +01:00
async.c aio: add a ThreadPool instance to AioContext 2013-03-15 16:07:50 +01:00
balloon.c
block-migration.c migration: run setup callbacks out of big lock 2013-03-11 13:32:01 +01:00
block.c block: Allow omitting the file name when using driver-specific options 2013-03-22 17:51:32 +01:00
blockdev-nbd.c
blockdev.c block: Allow omitting the file name when using driver-specific options 2013-03-22 17:51:32 +01:00
blockjob.c
bt-host.c MinGW: Replace setsockopt by qemu_setsocketopt 2013-03-22 13:14:48 +01:00
bt-vhci.c
Changelog
cmd.c
cmd.h
CODING_STYLE
configure Add top level changes for moxie 2013-03-23 14:25:42 +00:00
COPYING
COPYING.LIB
coroutine-gthread.c
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-win32.c
cpu-exec.c target-i386: Don't modify env->eflags around cpu_dump_state 2013-03-23 14:30:12 +00:00
cpus.c cpu: Pass CPUState to cpu_interrupt() 2013-03-12 10:35:55 +01:00
cputlb.c cpu: Move current_tb field to CPUState 2013-02-16 14:51:00 +01:00
device_tree.c
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
disas.c Add moxie disassembler 2013-03-23 14:25:41 +00:00
dma-helpers.c
dump-stub.c
dump.c cpu: Move host_tid field to CPUState 2013-02-16 14:50:59 +01:00
exec.c Merge remote-tracking branch 'afaerber/qom-cpu' into staging 2013-03-14 14:50:58 -05:00
gdbstub.c Merge branch 'ppc-for-upstream' of git://github.com/agraf/qemu 2013-03-22 21:43:57 +01:00
HACKING
hmp-commands.hx Revert "hmp: Disable chardev-add and chardev-remove" 2013-03-13 10:27:47 +01:00
hmp.c Support for TPM command line options 2013-03-12 13:40:11 -05:00
hmp.h Support for TPM command line options 2013-03-12 13:40:11 -05:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c
kvm-all.c cpu: Pass CPUState to cpu_interrupt() 2013-03-12 10:35:55 +01:00
kvm-stub.c
LICENSE
main-loop.c main-loop: add qemu_get_aio_context() 2013-03-15 16:07:50 +01:00
MAINTAINERS Add top level changes for moxie 2013-03-23 14:25:42 +00:00
Makefile Fix TAGS creation 2013-03-15 11:36:49 -05:00
Makefile.objs Support for TPM command line options 2013-03-12 13:40:11 -05:00
Makefile.target build: always link device_tree.o into emulators if libfdt available 2013-03-01 15:01:19 +01:00
memory_mapping-stub.c
memory_mapping.c
memory.c memory: fix a bug of detection of memory region collision 2013-03-22 13:21:28 +01:00
migration-exec.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-fd.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-tcp.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-unix.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration.c migration: inline migrate_fd_close 2013-03-11 13:32:03 +01:00
monitor.c Merge branch 'ppc-for-upstream' of git://github.com/agraf/qemu 2013-03-22 21:43:57 +01:00
nbd.c nbd: Remove unused functions 2013-03-22 17:51:32 +01:00
os-posix.c
os-win32.c
page_cache.c page_cache: dup memory on insert 2013-03-11 13:32:03 +01:00
qapi-schema-test.json
qapi-schema.json Add top level changes for moxie 2013-03-23 14:25:42 +00:00
qdev-monitor.c hw: move qdev-monitor.o to toplevel directory 2013-03-01 13:54:10 +01:00
qdict-test-data.txt
qemu-bridge-helper.c
qemu-char.c char: Fix return type of qemu_chr_fe_add_watch() 2013-03-19 07:56:07 -05:00
qemu-coroutine-io.c
qemu-coroutine-lock.c coroutine: use AioContext for CoQueue BH 2013-03-15 16:07:51 +01:00
qemu-coroutine-sleep.c
qemu-coroutine.c coroutine: move pooling to common code 2013-02-22 21:21:10 +01:00
qemu-doc.texi sheepdog: add support for connecting to unix domain socket 2013-03-04 09:54:17 +01:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c block: Add options QDict to bdrv_open() prototype 2013-03-15 16:07:49 +01:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io.c block: Add options QDict to bdrv_file_open() prototypes 2013-03-22 17:51:31 +01:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c block: Add options QDict to bdrv_open() prototype 2013-03-15 16:07:49 +01:00
qemu-nbd.texi qemu-nbd: add --discard option 2013-02-22 21:29:43 +01:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx Fix typos and misspellings 2013-03-22 13:25:07 +01:00
qemu-seccomp.c
qemu-tech.texi
qemu-timer.c
qemu.sasl
qmp-commands.hx migration: Improve QMP documentation 2013-03-26 13:30:38 +01:00
qmp.c
qtest.c qtest: Add MMIO support 2013-02-18 08:39:10 -06:00
readline.c readline: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
README
rules.mak rules/mak: make clean should blow away timestamp files 2013-01-30 01:31:08 +02:00
savevm.c savevm: Add VMSTATE_FLOAT64 helpers 2013-03-26 13:30:49 +01:00
spice-qemu-char.c spice-qemu-char: Remove dead debugging code 2013-03-14 09:46:18 +01:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c
thread-pool.c threadpool: drop global thread pool 2013-03-15 16:07:51 +01:00
thunk.c
trace-events console: rework DisplaySurface handling [vga emu side] 2013-03-18 10:21:58 +01:00
translate-all.c tcg: Fix occasional TCG broken problem when ldst optimization enabled 2013-03-22 21:38:21 +01:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
VERSION Open up 1.5 development tree 2013-02-15 17:40:56 -06:00
version.rc
vl.c add a boot option to do strict boot 2013-03-19 08:00:10 -05:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c cpu: Move halted and interrupt_request fields to CPUState 2013-03-12 10:35:55 +01:00
xen-mapcache.c
xen-stub.c

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

- QEMU team