QEMU With E2K User Support
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Haozhong Zhang 084140bd49 exec: fix access to ram_list.dirty_memory when sync dirty bitmap
In cpu_physical_memory_sync_dirty_bitmap(rb, start, ...), the 2nd
argument 'start' is relative to the start of the ramblock 'rb'. When
it's used to access the dirty memory bitmap of ram_list (i.e.
ram_list.dirty_memory[DIRTY_MEMORY_MIGRATION]->blocks[]), an offset to
the start of all RAM (i.e. rb->offset) should be added to it, which has
however been missed since c/s 6b6712efcc. For a ramblock of host memory
backend whose offset is not zero, cpu_physical_memory_sync_dirty_bitmap()
synchronizes the incorrect part of the dirty memory bitmap of ram_list
to the per ramblock dirty bitmap. As a result, a guest with host
memory backend may crash after migration.

Fix it by adding the offset of ramblock when accessing the dirty memory
bitmap of ram_list in cpu_physical_memory_sync_dirty_bitmap().

Reported-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Message-Id: <20170628083704.24997-1-haozhong.zhang@intel.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Tested-by: Juan Quintela <quintela@redhat.com>
Tested-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2017-06-28 12:23:58 +02:00
accel accel: introduce AccelClass.global_props 2017-06-28 11:18:38 +02:00
audio audio: fix WAVState leak 2017-05-04 09:15:45 +02:00
backends object: use more specific property type names 2017-06-20 14:31:32 +02:00
block block: Do not strcmp() with NULL uri->scheme 2017-06-26 14:54:46 +02:00
bsd-user util: Use g_malloc/g_free in envlist.c 2017-05-07 09:57:51 +03:00
chardev chardev: don't use alias names in parse_compat() 2017-06-08 17:57:58 +04:00
contrib vhost-user-scsi: Introduce a vhost-user-scsi sample application 2017-06-15 11:18:40 +02:00
crypto fix mingw build failure 2017-05-16 15:33:25 +01:00
default-configs vhost-user-scsi: Introduce vhost-user-scsi host device 2017-06-15 11:18:40 +02:00
disas configure: split c and cxx extra flags 2017-06-07 15:29:46 +01:00
docs docs: create interop/ subdirectory 2017-06-15 11:18:39 +02:00
dtc@558cd81bdd dtc: Update submodule to avoid build errors 2017-03-14 12:24:29 +11:00
fpu softfloat: define 680x0 specific values 2017-06-15 09:15:38 +02:00
fsdev 9pfs: assume utimensat() and futimens() are present 2017-05-25 10:30:14 +02:00
gdb-xml target-m68k: define 96bit FP registers for gdb on 680x0 2017-06-21 22:11:12 +02:00
hw vmstate: error hint for failed equal checks 2017-06-28 11:18:44 +02:00
include exec: fix access to ram_list.dirty_memory when sync dirty bitmap 2017-06-28 12:23:58 +02:00
io sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +02:00
libdecnumber
linux-headers linux-headers: update 2017-05-19 12:29:01 +02:00
linux-user linux-user: add strace support for uinfo structure of rt_sigqueueinfo() and rt_tgsigqueueinfo() 2017-05-29 14:56:09 +03:00
migration migration: add "return-path" capability 2017-06-28 11:51:10 +02:00
nbd nbd/server: refactor nbd_trip 2017-06-15 11:18:39 +02:00
net object: use more specific property type names 2017-06-20 14:31:32 +02:00
pc-bios s390x: misc fixes 2017-06-13 09:27:17 +01:00
pixman@87eea99e44
po po: add missing translations in de, fr, it, zh 2016-12-14 18:47:19 +00:00
qapi qapi: update the qobject visitor to use QNUM_U64 2017-06-20 14:31:31 +02:00
qga qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
qobject json: learn to parse uint64 numbers 2017-06-20 14:31:31 +02:00
qom object: add uint property setter/getter 2017-06-20 14:31:32 +02:00
replay -----BEGIN PGP SIGNATURE----- 2017-06-05 10:09:14 +01:00
roms Update OpenBIOS images to 3ebaaa2 built from submodule. 2017-05-19 16:52:40 +01:00
scripts qapi: Remove visit_start_alternate() parameter promote_int 2017-06-20 14:31:31 +02:00
slirp migration: Split registration functions from vmstate.h 2017-06-13 11:00:44 +02:00
stubs migration: Move check_migratable() into qdev.c 2017-05-17 12:04:59 +02:00
target vmstate: error hint for failed equal checks 2017-06-28 11:18:44 +02:00
tcg Queued TCG patches 2017-06-22 10:25:03 +01:00
tests qemu-iotests: 068: test iothread mode 2017-06-26 14:51:13 +02:00
trace trace: fix tcg tracing build breakage 2017-03-28 11:07:46 +01:00
ui ui/cocoa.m: add Speed menu 2017-06-23 15:02:40 +01:00
util QAPI patches for 2017-06-09 2017-06-22 11:34:39 +01:00
.dir-locals.el
.exrc
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 2017-06-07 14:38:45 +01:00
.gitignore vhost-user-scsi: Introduce vhost-user-scsi host device 2017-06-15 11:18:40 +02:00
.gitmodules Add QemuMacDrivers as submodule 2017-05-11 09:45:15 +10:00
.mailmap
.shippable.yml shippable: add mipsel target 2017-06-21 15:03:06 +01:00
.travis.yml coroutine: remove GThread implementation 2017-05-12 10:36:46 -04:00
arch_init.c audio: Rename hw/audio/audio.h to hw/audio/soundhw.h 2017-05-19 10:48:54 +02:00
atomic_template.h tcg: Add atomic128 helpers 2016-10-26 08:29:01 -07:00
balloon.c trace: switch to modular code generation for sub-directories 2017-01-31 17:11:18 +00:00
block.c block: introduce dirty_bitmap_mutex 2017-06-16 07:55:00 +08:00
blockdev-nbd.c nbd: Fix regression on resiliency to port scan 2017-06-15 11:04:05 +02:00
blockdev.c QAPI patches for 2017-06-09 2017-06-22 11:34:39 +01:00
blockjob.c fix: avoid an infinite loop or a dangling pointer problem in img_commit 2017-06-26 14:54:46 +02:00
bootdevice.c
bt-host.c
bt-vhci.c
Changelog
CODING_STYLE CODING_STYLE: Mention preferred comment form 2017-02-28 09:03:38 +03:00
configure configure: Define NCURSES_WIDECHAR if we're using curses 2017-06-26 13:21:16 +01:00
COPYING
COPYING.LIB
cpus-common.c *_run_on_cpu: introduce run_on_cpu_data type 2016-10-31 15:00:25 +01:00
cpus.c cpus: reset throttle_thread_scheduled after sleep 2017-06-07 18:22:03 +02:00
device_tree.c device_tree: fix compiler warnings (clang 5) 2017-05-07 09:57:51 +03:00
device-hotplug.c
disas.c Fix Thumb-1 BE32 execution and disassembly. 2017-02-07 18:29:59 +00:00
dma-helpers.c block: explicitly acquire aiocontext in bottom halves that need it 2017-02-21 11:39:39 +00:00
dump.c dump: Acquire BQL around vm_start() in dump thread 2017-05-05 12:10:00 +02:00
exec.c exec: split qemu_ram_alloc_from_file() 2017-06-15 11:04:04 +02:00
gdbstub.c char: make chr_fe_deinit() optionaly delete backend 2017-06-02 11:33:53 +04:00
HACKING HACKING: document #include order 2017-01-03 16:38:47 +00:00
hax-stub.c Plumb the HAXM-based hardware acceleration support 2017-01-19 22:07:46 +01:00
hmp-commands-info.hx ramblock: add new hmp command "info ramblock" 2017-05-17 17:31:16 +01:00
hmp-commands.hx usb: Deprecate HMP commands usb_add and usb_del 2017-05-29 14:03:35 +02:00
hmp.c migration: hmp: dump globals 2017-06-28 11:18:39 +02:00
hmp.h ramblock: add new hmp command "info ramblock" 2017-05-17 17:31:16 +01:00
ioport.c trace: switch to modular code generation for sub-directories 2017-01-31 17:11:18 +00:00
iothread.c monitor: add poll-* properties into query-iothreads result 2017-02-21 18:29:01 +00:00
LICENSE
MAINTAINERS pull-seccomp-20170622 2017-06-23 16:19:04 +01:00
Makefile vhost-user-scsi: Introduce a vhost-user-scsi sample application 2017-06-15 11:18:40 +02:00
Makefile.objs vhost-user-scsi: Introduce a vhost-user-scsi sample application 2017-06-15 11:18:40 +02:00
Makefile.target tcg/tci: fix tcg-interpreter build 2017-06-20 18:39:15 +01:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2016-12-22 16:00:23 +01:00
memory_mapping.c dump: fix memory_mapping_filter leak 2017-06-04 18:42:55 +03:00
memory.c exec: allow to get a pointer for some mmio memory region 2017-06-27 15:09:15 +02:00
module-common.c
monitor.c qapi: merge QInt and QFloat in QNum 2017-06-20 14:31:31 +02:00
numa.c numa: use get_uint() for "size" property 2017-06-20 14:31:33 +02:00
os-posix.c
os-win32.c shutdown: Add source information to SHUTDOWN and RESET 2017-05-23 13:28:17 +02:00
qapi-schema.json migration: add "return-path" capability 2017-06-28 11:51:10 +02:00
qdev-monitor.c migration: Move remaining exported functions to migration/misc.h 2017-06-13 11:00:45 +02:00
qdict-test-data.txt
qemu-bridge-helper.c
qemu-doc.texi qemu-doc: include version number 2017-06-15 11:18:40 +02:00
qemu-ga.texi qemu-ga: Remove stray 'q' in documentation 2016-10-28 18:17:23 +03:00
qemu-img-cmds.hx qemu-img: introduce --target-image-opts for 'convert' command 2017-05-29 15:39:54 +02:00
qemu-img.c qemu-img: don't shadow opts variable in img_dd() 2017-06-26 14:54:46 +02:00
qemu-img.texi qemu-img: introduce --target-image-opts for 'convert' command 2017-05-29 15:39:54 +02:00
qemu-io-cmds.c block: change variable names in BlockDriverState 2017-06-26 14:54:46 +02:00
qemu-io.c block: Use QDict helpers for --force-share 2017-05-23 13:28:17 +02:00
qemu-nbd.c qemu-nbd: Ignore SIGPIPE 2017-06-15 11:04:05 +02:00
qemu-nbd.texi nbd: Add qemu-nbd -D for human-readable description 2016-11-02 09:28:55 +01:00
qemu-option-trace.texi docs: update manpage for stderr->log rename 2017-02-13 13:38:31 +00:00
qemu-options-wrapper.h hxtool: emit Texinfo headings as @subsection 2017-01-16 17:52:35 +01:00
qemu-options.h
qemu-options.hx doc: Document driver-specific -blockdev options 2017-06-26 14:51:13 +02:00
qemu-seccomp.c seccomp: adding getrusage to the whitelist 2016-09-21 11:26:02 +02:00
qemu-tech.texi qemu-doc: merge qemu-tech and qemu-doc 2016-10-07 10:05:54 +02:00
qemu.nsi qemu-doc: merge qemu-tech and qemu-doc 2016-10-07 10:05:54 +02:00
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 2017-05-09 14:41:47 +01:00
qmp.c chardev: move headers to include/chardev 2017-06-02 11:33:52 +04:00
qtest.c char: move CharBackend handling in char-fe unit 2017-06-02 11:33:53 +04:00
README README: Add linux to macOS build info 2017-01-24 23:26:52 +03:00
replication.c
replication.h
rules.mak docs: create interop/ subdirectory 2017-06-15 11:18:39 +02:00
softmmu_template.h cputlb: Tidy some macros 2016-10-26 08:29:00 -07:00
thunk.c
tpm.c
trace-events accel: move kvm related accelerator files into accel/ 2017-06-15 11:04:06 +02:00
user-exec-stub.c stubs: group stubs for user-mode emulation 2017-01-16 17:52:35 +01:00
user-exec.c user-exec: handle synchronous signals from QEMU gracefully 2017-03-28 10:50:35 +01:00
VERSION Open 2.10 development tree 2017-04-20 15:42:31 +01:00
version.rc
vl.c migration: move only_migratable to MigrationState 2017-06-28 11:18:38 +02:00

         QEMU README
         ===========

QEMU is a generic and open source machine & userspace emulator and
virtualizer.

QEMU is capable of emulating a complete machine in software without any
need for hardware virtualization support. By using dynamic translation,
it achieves very good performance. QEMU can also integrate with the Xen
and KVM hypervisors to provide emulated hardware while allowing the
hypervisor to manage the CPU. With hypervisor support, QEMU can achieve
near native performance for CPUs. When QEMU emulates CPUs directly it is
capable of running operating systems made for one machine (e.g. an ARMv7
board) on a different machine (e.g. an x86_64 PC board).

QEMU is also capable of providing userspace API virtualization for Linux
and BSD kernel interfaces. This allows binaries compiled against one
architecture ABI (e.g. the Linux PPC64 ABI) to be run on a host using a
different architecture ABI (e.g. the Linux x86_64 ABI). This does not
involve any hardware emulation, simply CPU and syscall emulation.

QEMU aims to fit into a variety of use cases. It can be invoked directly
by users wishing to have full control over its behaviour and settings.
It also aims to facilitate integration into higher level management
layers, by providing a stable command line interface and monitor API.
It is commonly invoked indirectly via the libvirt library when using
open source applications such as oVirt, OpenStack and virt-manager.

QEMU as a whole is released under the GNU General Public License,
version 2. For full licensing details, consult the LICENSE file.


Building
========

QEMU is multi-platform software intended to be buildable on all modern
Linux platforms, OS-X, Win32 (via the Mingw64 toolchain) and a variety
of other UNIX targets. The simple steps to build QEMU are:

  mkdir build
  cd build
  ../configure
  make

Additional information can also be found online via the QEMU website:

  http://qemu-project.org/Hosts/Linux
  http://qemu-project.org/Hosts/Mac
  http://qemu-project.org/Hosts/W32


Submitting patches
==================

The QEMU source code is maintained under the GIT version control system.

   git clone git://git.qemu-project.org/qemu.git

When submitting patches, the preferred approach is to use 'git
format-patch' and/or 'git send-email' to format & send the mail to the
qemu-devel@nongnu.org mailing list. All patches submitted must contain
a 'Signed-off-by' line from the author. Patches should follow the
guidelines set out in the HACKING and CODING_STYLE files.

Additional information on submitting patches can be found online via
the QEMU website

  http://qemu-project.org/Contribute/SubmitAPatch
  http://qemu-project.org/Contribute/TrivialPatches


Bug reporting
=============

The QEMU project uses Launchpad as its primary upstream bug tracker. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

  https://bugs.launchpad.net/qemu/

If using QEMU via an operating system vendor pre-built binary package, it
is preferable to report bugs to the vendor's own bug tracker first. If
the bug is also known to affect latest upstream code, it can also be
reported via launchpad.

For additional information on bug reporting consult:

  http://qemu-project.org/Contribute/ReportABug


Contact
=======

The QEMU community can be contacted in a number of ways, with the two
main methods being email and IRC

 - qemu-devel@nongnu.org
   http://lists.nongnu.org/mailman/listinfo/qemu-devel
 - #qemu on irc.oftc.net

Information on additional methods of contacting the community can be
found online via the QEMU website:

  http://qemu-project.org/Contribute/StartHere

-- End