openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity
29,661 Commits 10 Branches 342 Tags 565 MiB
C 79.2%
JavaScript 6.6%
Python 4.3%
C++ 2.5%
Assembly 1.4%
Other 5.3%
Go to file
Paolo Bonzini 97a2ae3453 raw-posix: add support for write_zeroes on XFS and block devices 
The code is similar to the implementation of discard and write_zeroes
with UNMAP.  However, failure must be propagated up to block.c.

The stale page cache problem can be reproduced as follows:

    # modprobe scsi-debug lbpws=1 lbprz=1
    # ./qemu-io /dev/sdXX
    qemu-io> write -P 0xcc 0 2M
    qemu-io> write -z 0 1M
    qemu-io> read -P 0x00 0 512
    Pattern verification failed at offset 0, 512 bytes
    qemu-io> read -v 0 512
    00000000:  cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc  ................
    ...

    # ./qemu-io --cache=none /dev/sdXX
    qemu-io> write -P 0xcc 0 2M
    qemu-io> write -z 0 1M
    qemu-io> read -P 0x00 0 512
    qemu-io> read -v 0 512
    00000000:  00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
    ...

And similarly with discard instead of "write -z".

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
 		2013-12-03 15:26:49 +01:00
audio ossaudio: check for oss support in oss_audio_init 2013-11-07 12:26:00 +01:00
backends rng-egd: offset the point when repeatedly read from the buffer 2013-11-21 17:39:17 +01:00
block raw-posix: add support for write_zeroes on XFS and block devices 2013-12-03 15:26:49 +01:00
bsd-user *-user: Improve documentation for lock_user function 2013-09-20 20:09:24 +04:00
default-configs arm11mpcore: Split off SCU device 2013-11-05 17:47:30 +01:00
disas disas/ppc.c: Fix little endian disassembly 2013-09-02 10:06:41 +02:00
docs docs/memory.txt: Clarify and expand priority/overlap documentation 2013-11-05 19:59:24 -08:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu softfloat: Fix shift128Right for shift counts 64..127 2013-06-10 11:36:12 -05:00
fsdev fsdev: Fix potential memory leak 2013-07-09 13:38:56 -05:00
gdb-xml target-arm: Add AArch64 gdbstub support 2013-09-10 19:11:28 +01:00
hw PPC: BookE: Make FIT/WDT timers at best millisecond grained 2013-11-25 20:35:12 -08:00
include block: add bdrv_aio_write_zeroes 2013-12-03 15:26:49 +01:00
libcacard Merge remote-tracking branch 'stefanha/block' into staging 2013-09-23 11:53:05 -05:00
linux-headers linux-headers: update to 3.12-rc1 2013-09-20 12:38:48 +02:00
linux-user linux-user: Fix stat64 syscall for SPARC64 2013-11-07 07:02:44 +01:00
net net: fix qemu_flush_queued_packets() in presence of a hub 2013-11-08 17:32:34 +01:00
pc-bios sun4m: Add FCode ROM for TCX framebuffer 2013-11-21 17:38:52 +01:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po po: Update all *.po files 2013-08-07 12:48:00 -05:00
qapi qapi: fix memleak by adding implict struct functions in dealloc visitor 2013-11-05 19:58:38 -08:00
qga qga: Fix two format strings for MinGW 2013-11-25 20:35:28 -08:00
qobject qdict: Optimise qdict_do_flatten() 2013-11-29 13:40:37 +01:00
qom qom: Fix memory leak in object_property_set_link() 2013-11-19 10:58:21 +01:00
roms pseries: Update SLOF firmware image 2013-11-08 04:33:19 +01:00
scripts Adjust qapi-visit for python-2.4.3 2013-11-11 10:02:21 -05:00
slirp misc: Spelling and grammar fixes in comments 2013-10-26 13:06:45 +04:00
stubs Merge remote-tracking branch 'kiszka/queues/slirp' into staging 2013-09-17 10:01:24 -05:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha misc: New spelling fixes in comments 2013-10-26 13:01:57 +04:00
target-arm target-arm: fix sorting issue of KVM cpreg list 2013-10-31 14:00:16 +01:00
target-cris tcg: Remove stray semi-colons from target-*/helper.h 2013-10-10 11:43:37 -07:00
target-i386 Here are a bunch of 1.7-tagged patches that I was afraid 2013-11-25 09:41:24 -08:00
target-lm32 target: Include softmmu_exec.h where forgotten 2013-09-02 09:08:30 -07:00
target-m68k Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-microblaze microblaze: At swx, check that the reserved word is unmodified 2013-10-24 22:32:56 +02:00
target-mips Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-moxie cpu: Drop cpu_model_str from CPU_COMMON 2013-10-07 11:48:47 +02:00
target-openrisc target-openrisc: Correct memory bounds checking for the tlb buffers 2013-11-20 21:47:17 +08:00
target-ppc spapr: Use DeviceClass::fw_name for device tree CPU node 2013-10-25 23:25:48 +02:00
target-s390x exec: Fix prototype of phys_mem_set_alloc and related functions 2013-10-14 08:50:34 -07:00
target-sh4 Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-sparc Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-unicore32 Merge remote-tracking branch 'rth/tcg-pull' into staging 2013-10-11 09:36:52 -07:00
target-xtensa target-xtensa: add missing DEBUG section to dc233c config 2013-11-08 09:26:07 +04:00
tcg tcg-ia64: Introduce tcg_opc_bswap64_i 2013-11-18 15:57:59 +10:00
tests vmdk: Fix creating big description file 2013-12-03 09:54:16 +01:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui curses: fixup SIGWINCH handler mess 2013-11-25 20:36:27 -08:00
util util/error: Save errno from clobbering 2013-11-28 10:30:52 +01:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore .gitignore: ignore qmp-commands.txt 2013-10-26 13:01:57 +04:00
.gitmodules Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: basic compile and check recipes 2013-11-13 15:48:38 +04:00
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
COPYING
…
COPYING.LIB
…
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
LICENSE LICENSE: clarify 2013-08-12 09:15:12 -05:00
MAINTAINERS MAINTAINERS: add sheepdog development mailing list 2013-11-29 13:40:37 +01:00
Makefile sun4m: Add FCode ROM for TCX framebuffer 2013-11-21 17:38:52 +01:00
Makefile.objs qemu-ga: Add Windows VSS provider and requester as DLL 2013-09-09 14:17:57 -05:00
Makefile.target default-configs/: CONFIG_GDBSTUB_XML removed 2013-10-16 18:21:01 +02:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
VERSION Open 2.0 development tree 2013-11-27 14:02:45 -08:00
aio-posix.c aio / timers: Convert aio_poll to use AioContext timers' deadline 2013-08-22 19:10:28 +02:00
aio-win32.c aio-win32: replace incorrect AioHandler->opaque usage with ->e 2013-08-22 22:04:54 +02:00
arch_init.c migration: drop MADVISE_DONT_NEED for incoming zero pages 2013-11-19 17:23:57 +01:00
async.c aio / timers: aio_ctx_prepare sets timeout from AioContext timers 2013-08-22 19:10:28 +02:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c block: per caller dirty bitmap 2013-11-29 13:40:33 +01:00
block.c block: make bdrv_co_do_write_zeroes stricter in producing aligned requests 2013-12-03 15:26:49 +01:00
blockdev-nbd.c nbd: use BlockDriverState refcnt 2013-09-06 15:25:08 +02:00
blockdev.c block/drive-mirror: Reuse backing HD for sync=none 2013-11-27 07:53:32 -08:00
blockjob.c qapi: make use of new BlockJobType 2013-10-11 10:52:54 +02:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
configure pc very last minute fixes for 1.7 2013-11-25 09:49:43 -08:00
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c cpu-exec: Also reload CPUClass *cc after longjmp return in cpu_exec() 2013-10-07 11:46:58 +02:00
cpus.c timers: fix stop/cont with -icount 2013-11-06 21:47:05 -08:00
cputlb.c cputlb: Remove dead function tlb_update_dirty() 2013-10-07 11:48:03 +02:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
device_tree.c device_tree: Add qemu_devtree_setprop_sized_cells() utility functions 2013-07-19 12:58:46 +01:00
disas.c disas: Implement fallback to dump object code as hex 2013-08-24 07:26:45 +02:00
dma-helpers.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
dump.c dump-guest-memory: Check for the correct return value 2013-10-25 23:25:48 +02:00
exec.c pci, pc, virtio bug fixes 2013-11-13 11:48:35 -08:00
gdbstub.c vl: allow "cont" from panicked state 2013-11-04 15:39:41 +02:00
hmp-commands.hx hmp: add interface hmp_snapshot_delete_blkdev_internal 2013-09-12 10:12:47 +02:00
hmp.c hmp: drop bogus "[not inserted]" 2013-10-17 10:10:14 +02:00
hmp.h hmp: add interface hmp_snapshot_delete_blkdev_internal 2013-09-12 10:12:47 +02:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c portio: Allow to mark portio lists as coalesced MMIO flushing 2013-10-17 17:24:15 +02:00
kvm-all.c Merge remote-tracking branch 'qemu-kvm/uq/master' into staging 2013-09-23 11:52:49 -05:00
kvm-stub.c kvm irqfd: support direct msimessage to irq translation 2013-09-20 12:37:52 +02:00
main-loop.c slirp: set mainloop timeout with more precise value 2013-09-17 12:26:05 +02:00
memory.c pci, pc, acpi fixes, enhancements 2013-10-31 16:58:32 +01:00
memory_mapping.c cpu: Use QTAILQ for CPU list 2013-09-03 12:25:55 +02:00
migration-exec.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-fd.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-rdma.c rdma: constify ram_chunk_{index, start, end} 2013-09-24 13:22:50 +02:00
migration-tcp.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration-unix.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
migration.c migration: Fix compiler warning ('caps' may be used uninitialized) 2013-10-05 14:02:29 +04:00
monitor.c Merge remote-tracking branch 'agraf/ppc-for-upstream' into staging 2013-10-31 17:01:12 +01:00
nbd.c nbd: use BlockDriverState refcnt 2013-09-06 15:25:08 +02:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema.json qapi: Change BlockDirtyInfo to list 2013-11-29 13:40:36 +01:00
qdev-monitor.c qdev-monitor: Inline qdev_init() for device_add 2013-11-05 18:06:51 +01:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c Merge remote-tracking branch 'amit/char-remove-watch-on-unplug' into staging 2013-10-10 13:16:02 -07:00
qemu-coroutine-io.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
qemu-coroutine-lock.c coroutine: remove qemu_co_queue_wait_insert_head 2013-12-02 17:11:49 +01:00
qemu-coroutine-sleep.c coroutine: add co_aio_sleep_ns() to allow sleep in block drivers 2013-10-30 12:22:09 +01:00
qemu-coroutine.c coroutine: add ./configure --disable-coroutine-pool 2013-09-12 10:12:48 +02:00
qemu-doc.texi doc: we use seabios, not bochs bios 2013-06-28 22:10:34 +04:00
qemu-img-cmds.hx block: Image file option amendment 2013-09-12 10:12:46 +02:00
qemu-img.c qemu-img: conditionally zero out target on convert 2013-11-28 10:30:52 +01:00
qemu-img.texi qemu-img: add support for fully allocated images 2013-11-28 10:30:52 +01:00
qemu-io-cmds.c blkdebug: add "remove_break" command 2013-11-29 13:40:37 +01:00
qemu-io.c qemu-io: Let "open" pass options to block driver 2013-10-11 16:50:02 +02:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c block: Error parameter for open functions 2013-09-12 10:12:48 +02:00
qemu-nbd.texi Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx doc: fix hardcoded helper path 2013-11-18 13:45:10 +02:00
qemu-seccomp.c seccomp: fine tuning whitelist by adding times() 2013-09-24 15:15:16 -03:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c timer: add timer_mod_anticipate and timer_mod_anticipate_ns 2013-10-17 17:31:00 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl Fix command example in qemu.sasl 2013-07-19 12:52:03 +04:00
qmp-commands.hx blockdev: 'blockdev-add' QMP command 2013-10-11 16:50:01 +02:00
qmp.c QMP: Add cpu-add command 2013-05-01 13:06:07 +02:00
qtest.c qtest: Fix FMT_timeval vs time_t 2013-09-02 09:08:29 -07:00
readline.c monitor: avoid use of global *cur_mon in readline_completion() 2013-08-30 07:41:14 -04:00
rules.mak rules.mak: New string testing functions 2013-10-16 18:21:00 +02:00
savevm.c The calculation of bytes_xfer in qemu_put_buffer() is wrong 2013-11-20 12:16:04 +01:00
spice-qemu-char.c qemu-char: don't issue CHR_EVENT_OPEN in a BH 2013-06-10 11:38:37 -05:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c misc: Use new rotate functions 2013-09-25 21:23:05 +02:00
thread-pool.c aio / timers: Untangle include files 2013-08-22 19:10:27 +02:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
tpm.c tpm.c: Don't try to put -1 in a variable of type TpmModel 2013-07-29 10:37:10 -05:00
trace-events raw-posix: implement write_zeroes with MAY_UNMAP for files 2013-12-03 15:26:49 +01:00
translate-all.c exec: Delete is_tcg_gen_code and GETRA_EXT 2013-10-10 11:44:25 -07:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c linux-user: fix segmentation fault passing with h2g(x) != x 2013-07-23 17:28:28 +03:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-11-19 12:59:26 -08:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c qemu/xen: make use of xenstore relative paths 2013-10-10 14:25:52 +00:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c pc: Initializing ram_memory under Xen. 2013-09-09 16:22:19 +00:00

README 

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

- QEMU team