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Paolo Bonzini 837a183f00 Revert "qemu-char: Keep pty slave file descriptor open until the master is closed"
This reverts commit 34689e206a.

Marc-André Lureau provided the following commentary: "It looks like if
a the slave is opened, then Linux will buffer the master writes, up to
a few kb and then throttle, so it's not entirely blocked but eventually
the guest VM dies.  However, not having any slave open it will simply let
the write go and discard the data.  At least, virt-install configures
a pty for the serial but viewers like virt-manager do not necessarily
open it.  And, if there are no viewers, it will just hang.  If qemu
starts reading all the data from the slave, I don't think interactions
with other slaves will work. I don't see much options but to close the
slave, thus reverting this patch."

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-02-16 09:27:59 +01:00
audio audio: Clean up includes 2016-02-02 13:57:31 +01:00
backends qom: Swap 'name' next to visitor in ObjectPropertyAccessor 2016-02-08 17:29:56 +01:00
block -----BEGIN PGP SIGNATURE----- 2016-02-09 17:56:46 +00:00
bsd-user bsd-user: Clean up includes 2016-02-04 17:01:04 +00:00
contrib contrib: Clean up includes 2016-02-04 17:41:30 +00:00
crypto crypto: ensure qcrypto_hash_digest_len is always defined 2016-02-02 13:02:56 +00:00
default-configs hw: Add support for LSI SAS1068 (mptsas) device 2016-02-09 15:45:26 +01:00
disas disas: Clean up includes 2016-02-04 17:41:30 +00:00
docs qmp-spec: fix index in doc 2016-02-11 15:15:46 +03:00
dtc@65cc4d2748 dtc: Update dtc / libfdt submodule to version 1.4.0 2015-06-03 23:56:49 +02:00
fpu all: Clean up includes 2016-02-04 17:41:30 +00:00
fsdev man: virtfs-proxy-helper: Rework awkward sentence 2016-02-11 15:15:46 +03:00
gdb-xml target-ppc: gdbstub: Add VSX support 2016-01-30 23:37:38 +11:00
hw Xen 2016-02-12 2016-02-12 17:36:12 +00:00
include Xen 2016-02-12 2016-02-12 17:36:12 +00:00
io qemu-char, io: fix ordering of arguments for UDP socket creation 2016-02-09 17:09:15 +01:00
libdecnumber typofixes - v4 2015-09-11 10:45:43 +03:00
linux-headers linux-headers: update from kvm/next 2015-12-17 15:24:34 +01:00
linux-user log: do not unnecessarily include qom/cpu.h 2016-02-03 09:19:10 +00:00
migration rdma: remove check on time_spent when calculating mbs 2016-02-11 15:15:46 +03:00
nbd nbd: avoid unaligned uint64_t store 2016-02-09 15:45:26 +01:00
net qom: Swap 'name' next to visitor in ObjectPropertyAccessor 2016-02-08 17:29:56 +01:00
pc-bios s390x: remove s390-zipl.rom 2016-02-11 15:15:47 +03:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po Update language files for QEMU 2.5.0 2015-12-10 13:50:45 +00:00
qapi qmp: Don't abuse stack to track qmp-output root 2016-02-08 17:29:57 +01:00
qga qga: Clean up includes 2016-02-04 17:41:30 +00:00
qobject qobject: Document more shortcomings in our number handling 2016-02-08 17:29:54 +01:00
qom cpu: Add callback to check architectural watchpoint match 2016-02-11 11:17:32 +00:00
replay qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
roms Update OpenBIOS images 2016-02-04 11:17:44 +00:00
scripts checkpatch: Eliminate false positive in case of space before square bracket in a definition 2016-02-15 20:02:09 +01:00
slirp slirp: Clean up includes 2016-02-04 17:41:30 +00:00
stubs stubs: Clean up includes 2016-02-04 17:01:04 +00:00
target-alpha tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-arm target-arm: Implement checking of fired watchpoint 2016-02-11 11:17:32 +00:00
target-cris tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-i386 target-i386: Implement FSGSBASE 2016-02-15 14:50:00 +11:00
target-lm32 tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-m68k tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-microblaze tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-mips tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-moxie tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-openrisc tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-ppc QAPI patches for 2016-02-09 2016-02-09 11:42:43 +00:00
target-s390x tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-sh4 tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-sparc tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-tilegx tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-tricore tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-unicore32 tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
target-xtensa tcg: Change tcg_global_mem_new_* to take a TCGv_ptr 2016-02-09 10:19:32 +11:00
tcg tcg: Introduce temp_load 2016-02-09 10:45:34 +11:00
tests qmp: Fix reference-counting of qnull on empty output visit 2016-02-08 17:29:57 +01:00
trace all: Clean up includes 2016-02-04 17:41:30 +00:00
ui ui/cocoa.m: Include qemu/osdep.h 2016-02-08 13:14:40 +00:00
util qemu-sockets: simplify error handling 2016-02-11 15:15:46 +03:00
.dir-locals.el Add .dir-locals.el file to configure emacs coding style 2015-10-08 19:46:01 +03:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore maint: Ignore ivshmem binaries 2015-11-06 15:42:38 +03:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: reduce the test matrix a little 2016-02-08 18:50:25 +00:00
accel.c all: Clean up includes 2016-02-04 17:41:30 +00:00
aio-posix.c all: Clean up includes 2016-02-04 17:41:30 +00:00
aio-win32.c all: Clean up includes 2016-02-04 17:41:30 +00:00
arch_init.c all: Clean up includes 2016-02-04 17:41:30 +00:00
async.c all: Clean up includes 2016-02-04 17:41:30 +00:00
balloon.c all: Clean up includes 2016-02-04 17:41:30 +00:00
block.c all: Clean up includes 2016-02-04 17:41:30 +00:00
blockdev-nbd.c all: Clean up includes 2016-02-04 17:41:30 +00:00
blockdev.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
blockjob.c blockjob: Fix hang in block_job_finish_sync 2016-02-09 13:52:26 +00:00
bootdevice.c qom: Swap 'name' next to visitor in ObjectPropertyAccessor 2016-02-08 17:29:56 +01:00
bt-host.c all: Clean up includes 2016-02-04 17:41:30 +00:00
bt-vhci.c all: Clean up includes 2016-02-04 17:41:30 +00:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: update mixed declaration rules 2015-09-09 15:34:54 +02:00
configure Xen 2016-02-12 2016-02-12 17:36:12 +00:00
COPYING COPYING: update from FSF 2008-10-12 17:54:42 +00:00
COPYING.LIB Update FSF address in GPL/LGPL boilerplate 2009-01-04 22:05:52 +00:00
cpu-exec-common.c exec: Clean up includes 2016-01-29 15:07:22 +00:00
cpu-exec.c log: do not unnecessarily include qom/cpu.h 2016-02-03 09:19:10 +00:00
cpus.c qapi: Fix compilation failure on MIPS and SPARC 2016-02-08 17:29:57 +01:00
cputlb.c exec: Clean up includes 2016-01-29 15:07:22 +00:00
device_tree.c all: Clean up includes 2016-02-04 17:41:30 +00:00
device-hotplug.c all: Clean up includes 2016-02-04 17:41:30 +00:00
disas.c all: Clean up includes 2016-02-04 17:41:30 +00:00
dma-helpers.c all: Clean up includes 2016-02-04 17:41:30 +00:00
dump.c all: Clean up includes 2016-02-04 17:41:30 +00:00
exec.c trivial patches for 2016-02-11 2016-02-11 15:09:33 +00:00
gdbstub.c all: Clean up includes 2016-02-04 17:41:30 +00:00
HACKING HACKING: Add a section on error handling and reporting 2016-02-09 13:19:49 +01:00
hmp-commands-info.hx hmp: added io apic dump state 2015-09-25 12:04:42 +02:00
hmp-commands.hx migrate-start-postcopy: Improve text 2015-11-12 17:54:39 +01:00
hmp.c qapi: Fix compilation failure on MIPS and SPARC 2016-02-08 17:29:57 +01:00
hmp.h migrate_start_postcopy: Command to trigger transition to postcopy 2015-11-10 15:00:26 +01:00
iohandler.c all: Clean up includes 2016-02-04 17:41:30 +00:00
ioport.c all: Clean up includes 2016-02-04 17:41:30 +00:00
iothread.c all: Clean up includes 2016-02-04 17:41:30 +00:00
kvm-all.c kvm-all: trace: strerror fixup 2016-02-09 15:45:26 +01:00
kvm-stub.c all: Clean up includes 2016-02-04 17:41:30 +00:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c all: Clean up includes 2016-02-04 17:41:30 +00:00
MAINTAINERS * switch to C11 atomics (Alex) 2016-02-09 19:34:46 +00:00
Makefile s390x: remove s390-zipl.rom 2016-02-11 15:15:47 +03:00
Makefile.objs log: move qemu-log.c into util/ directory 2016-02-03 09:19:10 +00:00
Makefile.target io: add abstract QIOChannel classes 2015-12-18 12:18:05 +00:00
memory_mapping.c all: Clean up includes 2016-02-04 17:41:30 +00:00
memory.c qom: Swap 'name' next to visitor in ObjectPropertyAccessor 2016-02-08 17:29:56 +01:00
module-common.c all: Clean up includes 2016-02-04 17:41:30 +00:00
monitor.c all: Clean up includes 2016-02-04 17:41:30 +00:00
numa.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
os-posix.c all: Clean up includes 2016-02-04 17:41:30 +00:00
os-win32.c all: Clean up includes 2016-02-04 17:41:30 +00:00
page_cache.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qapi-schema.json char: introduce support for TLS encrypted TCP chardev backend 2016-01-26 15:58:11 +01:00
qdev-monitor.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qemu-char.c Revert "qemu-char: Keep pty slave file descriptor open until the master is closed" 2016-02-16 09:27:59 +01:00
qemu-doc.texi remove libtool support 2016-02-11 15:15:46 +03:00
qemu-ga.texi docs: Style the command and its options in the synopsis 2016-01-26 15:58:11 +01:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c qapi: Swap visit_* arguments for consistent 'name' placement 2016-02-08 17:29:56 +01:00
qemu-img.texi docs: Style the command and its options in the synopsis 2016-01-26 15:58:11 +01:00
qemu-io-cmds.c block: Clean up includes 2016-01-20 13:36:23 +01:00
qemu-io.c trace: split trace_init_file out of trace_init_backends 2016-02-03 09:19:09 +00:00
qemu-nbd.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qemu-nbd.texi qemu-nbd: Fix texi sentence capitalisation 2016-02-09 15:45:26 +01:00
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 pc: set the OEM fields in the RSDT and the FADT from the SLIC 2016-02-06 20:44:10 +02:00
qemu-seccomp.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qemu-tech.texi doc: Refresh URLs in the qemu-tech documentation 2015-09-25 12:20:21 +02:00
qemu-timer.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qemu.nsi nsis: Add QEMU version information to Windows registry 2015-09-24 20:52:28 +02:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qjson.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qmp-commands.hx qmp-commands.hx: Document the missing options for migration capability commands 2016-02-05 19:09:50 +05:30
qmp.c all: Clean up includes 2016-02-04 17:41:30 +00:00
qtest.c all: Clean up includes 2016-02-04 17:41:30 +00:00
README README: fill out some useful quickstart information 2015-10-13 18:48:46 +02:00
rules.mak remove libtool support 2016-02-11 15:15:46 +03:00
softmmu_template.h exec.c: Pass MemTxAttrs to iotlb_to_region so it uses the right AS 2016-01-21 14:15:05 +00:00
spice-qemu-char.c all: Clean up includes 2016-02-04 17:41:30 +00:00
tcg-runtime.c all: Clean up includes 2016-02-04 17:41:30 +00:00
tci.c all: Clean up includes 2016-02-04 17:41:30 +00:00
thread-pool.c all: Clean up includes 2016-02-04 17:41:30 +00:00
thunk.c all: Clean up includes 2016-02-04 17:41:30 +00:00
tpm.c all: Clean up includes 2016-02-04 17:41:30 +00:00
trace-events hw: Add support for LSI SAS1068 (mptsas) device 2016-02-09 15:45:26 +01:00
translate-all.c log: do not unnecessarily include qom/cpu.h 2016-02-03 09:19:10 +00:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
translate-common.c exec: Clean up includes 2016-01-29 15:07:22 +00:00
user-exec.c all: Clean up includes 2016-02-04 17:41:30 +00:00
VERSION Open 2.6 development tree 2015-12-17 10:17:08 +00:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c Error reporting patches for 2016-02-09 2016-02-09 16:09:15 +00:00
xen-common-stub.c xen: Clean up includes 2016-01-29 15:07:23 +00:00
xen-common.c xen: drop XenXC and associated interface wrappers 2016-02-10 12:01:24 +00:00
xen-hvm-stub.c fix MSI injection on Xen 2016-02-06 20:44:10 +02:00
xen-hvm.c xen: Drop __XEN_LATEST_INTERFACE_VERSION__ checks from prior to Xen 4.2 2016-02-10 12:01:32 +00:00
xen-mapcache.c xen: Clean up includes 2016-01-29 15:07:23 +00:00

         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

Complete details of the process for building and configuring QEMU for
all supported host platforms can be found in the qemu-tech.html file.
Additional information can also be found online via the QEMU website:

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