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Eric Blake aedbe19297 shutdown: Prepare for use of an enum in reset/shutdown_request
We want to track why a guest was shutdown; in particular, being able
to tell the difference between a guest request (such as ACPI request)
and host request (such as SIGINT) will prove useful to libvirt.
Since all requests eventually end up changing shutdown_requested in
vl.c, the logical change is to make that value track the reason,
rather than its current 0/1 contents.

Since command-line options control whether a reset request is turned
into a shutdown request instead, the same treatment is given to
reset_requested.

This patch adds an internal enum ShutdownCause that describes reasons
that a shutdown can be requested, and changes qemu_system_reset() to
pass the reason through, although for now nothing is actually changed
with regards to what gets reported.  The enum could be exported via
QAPI at a later date, if deemed necessary, but for now, there has not
been a request to expose that much detail to end clients.

For the most part, we turn 0 into SHUTDOWN_CAUSE_NONE, and 1 into
SHUTDOWN_CAUSE_HOST_ERROR; the only specific case where we have enough
information right now to use a different value is when we are reacting
to a host signal.  It will take a further patch to edit all call-sites
that can trigger a reset or shutdown request to properly pass in any
other reasons; this patch includes TODOs to point such places out.

qemu_system_reset() trades its 'bool report' parameter for a
'ShutdownCause reason', with all non-zero values having the same
effect; this lets us get rid of the weird #defines for VMRESET_*
as synonyms for bools.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20170515214114.15442-3-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-05-23 13:28:17 +02:00
audio audio: fix WAVState leak 2017-05-04 09:15:45 +02:00
backends hostmem: use host_memory_backend_mr_inited() where proper 2017-04-20 15:22:41 -03:00
block migration/next for 20170517 2017-05-18 10:05:52 +01:00
bsd-user util: Use g_malloc/g_free in envlist.c 2017-05-07 09:57:51 +03:00
chardev QAPI patches for 2017-05-04 2017-05-09 15:49:14 -04:00
contrib libvhost-user: fix crash when rings aren't ready 2017-05-10 22:04:23 +03:00
crypto fix mingw build failure 2017-05-16 15:33:25 +01:00
default-configs s390x/3270: Mark non-migratable and enable the device 2017-05-04 10:34:37 +02:00
disas disas/cris.c: Avoid unintentional sign extension 2017-04-03 14:06:59 +01:00
docs qemu-doc: Update to use the new way of attaching USB devices 2017-05-12 12:26:40 +02:00
dtc@558cd81bdd dtc: Revert unintentional submodule downgrade from commit c2cabb3422 2017-03-16 14:11:15 +00:00
fpu softfloat: Use correct type in float64_to_uint64_round_to_zero() 2017-02-28 09:03:38 +03:00
fsdev throttle: factor out duplicate code 2017-02-28 10:31:46 +01:00
gdb-xml target/i386: Add GDB XML register description support 2017-05-05 12:09:59 +02:00
hw shutdown: Prepare for use of an enum in reset/shutdown_request 2017-05-23 13:28:17 +02:00
include shutdown: Prepare for use of an enum in reset/shutdown_request 2017-05-23 13:28:17 +02:00
io sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +02:00
libdecnumber
linux-headers update Linux headers to 4.11 2017-02-28 16:18:49 +00:00
linux-user trivial patches for 2017-05-10 2017-05-10 12:31:19 -04:00
migration shutdown: Prepare for use of an enum in reset/shutdown_request 2017-05-23 13:28:17 +02:00
nbd nbd-client: fix handling of hungup connections 2017-03-27 16:50:36 +02:00
net sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +02:00
pc-bios Add QemuMacDrivers qemu_vga.ndrv revision d4e7d7a built as submodule 2017-05-11 09:45:15 +10:00
pixman@87eea99e44
po po: add missing translations in de, fr, it, zh 2016-12-14 18:47:19 +00:00
qapi HMP pull 2017-05-18 13:36:15 +01:00
qga trivial patches for 2017-05-10 2017-05-10 12:31:19 -04:00
qobject qobject: Use simpler QDict/QList scalar insertion macros 2017-05-09 09:13:51 +02:00
qom qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
replay migration: Pass Error ** argument to {save,load}_vmstate 2017-05-17 12:04:59 +02:00
roms Add QemuMacDrivers as submodule 2017-05-11 09:45:15 +10:00
scripts scripts/qmp/qom-set: fix the value argument passed to srv.command() 2017-05-23 13:28:17 +02:00
slirp slirp: VMStatify remaining except for loop 2017-04-29 18:44:16 +02:00
stubs migration: Move check_migratable() into qdev.c 2017-05-17 12:04:59 +02:00
target migration/next for 20170517 2017-05-18 10:05:52 +01:00
tcg tcg/mips: fix field extraction opcode 2017-05-06 12:48:53 +02:00
tests migration/next for 20170517 2017-05-18 10:05:52 +01:00
trace trace: fix tcg tracing build breakage 2017-03-28 11:07:46 +01:00
ui vnc: replace hweight_long() with ctpopl() 2017-05-12 12:36:02 +02:00
util sockets: Plug memory leak in socket_address_flatten() 2017-05-23 13:28:17 +02:00
.dir-locals.el
.exrc
.gitignore qapi: Clean up build of generated documentation 2017-03-16 07:13:02 +01:00
.gitmodules Add QemuMacDrivers as submodule 2017-05-11 09:45:15 +10:00
.mailmap
.shippable.yml .shippable: add s390x-cross target 2017-02-28 20:31:01 +08:00
.travis.yml coroutine: remove GThread implementation 2017-05-12 10:36:46 -04:00
accel.c clean-up: removed duplicate #includes 2016-10-28 18:17:24 +03:00
arch_init.c nios2: Add support for Nios-II R1 2017-01-24 13:10:36 -08:00
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: Fix write/resize permissions for inactive images 2017-05-11 12:08:24 +02:00
blockdev-nbd.c sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +02:00
blockdev.c blockdev: use drained_begin/end for qmp_block_resize 2017-05-11 12:08:24 +02:00
blockjob.c blockjob: Use bdrv_coroutine_enter to start coroutine 2017-04-11 20:07:15 +08:00
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: Remove -lxencall for Xen detection 2017-05-16 11:49:46 -07:00
COPYING
COPYING.LIB
cpu-exec-common.c ui/console: ensure do_safe_dpy_refresh holds BQL 2017-03-28 10:52:24 +01:00
cpu-exec.c cpu-exec: update icount after each TB_EXIT 2017-04-10 10:23:38 +01:00
cpus-common.c *_run_on_cpu: introduce run_on_cpu_data type 2016-10-31 15:00:25 +01:00
cpus.c x86 and machine queue, 2017-05-11 2017-05-15 14:12:03 +01:00
cputlb.c cputlb: handle first atomic write to the page 2017-05-11 09:45:14 +10:00
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 HMP pull 2017-05-18 13:36:15 +01:00
gdbstub.c gdbstub: implement remote debugging protocol escapes for command receive 2017-05-08 09:26:32 -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 hmp: gpa2hva and gpa2hpa hostaddr command 2017-04-26 14:42:31 +01:00
hmp.c HMP pull 2017-05-18 13:36:15 +01:00
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
kvm-all.c qemu-timer: do not include sysemu/cpus.h from util/qemu-timer.h 2017-03-14 13:28:18 +01:00
kvm-stub.c KVM: move SIG_IPI handling to kvm-all.c 2017-03-03 16:40:02 +01:00
LICENSE
MAINTAINERS maintainers: Add myself as a NetBSD reviewer 2017-05-16 15:33:06 +01:00
Makefile Add QemuMacDrivers qemu_vga.ndrv revision d4e7d7a built as submodule 2017-05-11 09:45:15 +10:00
Makefile.objs migration: Move page_cache.c to migration/ 2017-05-17 12:04:59 +02:00
Makefile.target Xen 2017/04/21 + fix 2017-04-26 10:22:31 +01:00
memory_ldst.inc.c exec: introduce memory_ldst.inc.c 2016-12-22 16:00:23 +01:00
memory_mapping.c memory: Replace skip_dump flag with "ram_device" 2016-10-31 09:53:03 -06:00
memory.c memory: add support getting and using a dirty bitmap copy. 2017-04-24 10:12:28 +02:00
module-common.c
monitor.c qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
numa.c x86 and machine queue, 2017-05-11 2017-05-15 14:12:03 +01:00
os-posix.c
os-win32.c
qapi-schema.json numa: add '-numa cpu,...' option for property based node mapping 2017-05-11 16:08:50 -03:00
qdev-monitor.c qdev: Replace cannot_instantiate_with_device_add_yet with !user_creatable 2017-05-17 10:37:00 -03:00
qdict-test-data.txt
qemu-bridge-helper.c
qemu-doc.texi usb: bugfixes, doc update 2017-05-15 14:29:58 +01:00
qemu-ga.texi qemu-ga: Remove stray 'q' in documentation 2016-10-28 18:17:23 +03:00
qemu-img-cmds.hx qemu-img: Update documentation for -U 2017-05-11 11:08:40 +02:00
qemu-img.c qemu-img: wait for convert coroutines to complete 2017-05-11 12:08:24 +02:00
qemu-img.texi progress: Show current progress on SIGINFO 2017-04-28 18:48:11 +02:00
qemu-io-cmds.c qemu-io: Switch 'map' output to byte-based reporting 2017-05-11 14:28:06 +02:00
qemu-io.c qemu-io: Add --force-share option 2017-05-11 11:08:40 +02:00
qemu-nbd.c sockets: Limit SocketAddressLegacy to external interfaces 2017-05-09 09:14:40 +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 x86 and machine queue, 2017-05-11 2017-05-15 14:12:03 +01:00
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 block: New BdrvChildRole.activate() for blk_resume_after_migration() 2017-05-11 12:08:24 +02:00
qtest.c qtest: fix a memory leak 2017-03-01 00:09:28 +04:00
README README: Add linux to macOS build info 2017-01-24 23:26:52 +03:00
replication.c
replication.h
rules.mak qapi: Clean up build of generated documentation 2017-03-16 07:13:02 +01:00
softmmu_template.h cputlb: Tidy some macros 2016-10-26 08:29:00 -07:00
spice-qemu-char.c spice-char: fix segfault in char_spice_finalize 2017-03-03 16:40:03 +01:00
tcg-runtime.c tcg: Add opcode for ctpop 2017-01-10 08:48:56 -08:00
tci.c
thunk.c
tpm.c
trace-events move xen-mapcache.c to hw/i386/xen/ 2017-04-25 11:04:34 -07:00
translate-all.c qemu-timer: do not include sysemu/cpus.h from util/qemu-timer.h 2017-03-14 13:28:18 +01:00
translate-all.h
translate-common.c Merge branch 'icount-update' into HEAD 2017-03-03 16:39:18 +01:00
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 shutdown: Prepare for use of an enum in reset/shutdown_request 2017-05-23 13:28:17 +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