QEMU With E2K User Support
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Kevin Wolf 54a32bfec1 block: Allow reopen rw without BDRV_O_ALLOW_RDWR
BDRV_O_ALLOW_RDWR is a flag that tells whether qemu can internally
reopen a node read-write temporarily because the user requested
read-write for the top-level image, but qemu decided that read-only is
enough for this node (a backing file).

bdrv_reopen() is different, it is also used for cases where the user
changed their mind and wants to update the options. There is no reason
to forbid making a node read-write in that case.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
2017-08-08 15:19:16 +02:00
accel accel: cleanup error output 2017-08-02 00:13:25 +03:00
audio trace-events: fix code style: %# -> 0x% 2017-08-01 12:13:07 +01:00
backends memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
block parallels: drop check that bdrv_truncate() is working 2017-08-08 15:19:16 +02:00
bsd-user bsd-user/main.c: Fix unused variable warning 2017-07-21 15:01:09 +01:00
chardev char: don't exit on hmp 'chardev-add help' 2017-08-01 17:27:33 +02:00
contrib vhost-user-scsi: Introduce a vhost-user-scsi sample application 2017-06-15 11:18:40 +02:00
crypto docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
default-configs build-sys: add --disable-vhost-user 2017-08-03 15:55:41 +03:00
disas disas/microblaze: Add missing 'const' attributes 2017-07-04 09:22:20 +02:00
docs vhost-user: fix legacy cross-endian configurations 2017-08-02 00:13:25 +03:00
dtc@558cd81bdd dtc: Revert unintentional submodule downgrade from commit c2cabb3422 2017-03-16 14:11:15 +00:00
fpu softfloat: define floatx80_round() 2017-06-29 20:27:39 +02:00
fsdev block: remove timer canceling in throttle_config() 2017-07-18 15:14:35 +02:00
gdb-xml s390x/gdb: add gs registers 2017-07-14 12:29:49 +02:00
hw virtio: fix for rc2 2017-08-08 10:01:49 +01:00
include block: Allow reopen rw without BDRV_O_ALLOW_RDWR 2017-08-08 15:19:16 +02:00
io io: fix qio_channel_socket_accept err handling 2017-08-02 11:27:44 +01:00
libdecnumber
linux-headers linux header sync against v4.13-rc1 2017-07-18 10:55:16 +02:00
linux-user trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
migration migration: fix comment disorder in RAMState 2017-08-02 11:27:28 +01:00
nbd trace-events: fix code style: print 0x before hex numbers 2017-08-01 12:13:07 +01:00
net slirp: fill error when failing to initialize user network 2017-08-03 00:24:31 +02:00
pc-bios pseries: Update SLOF firmware image 2017-07-25 14:35:42 +10:00
pixman@87eea99e44
po
qapi docs: fix broken paths to docs/devel/qapi-code-gen.txt 2017-07-31 13:12:41 +03:00
qga test-qga: add test for guest-get-osinfo 2017-07-18 05:49:01 -05:00
qobject qapi: Separate type QNull from QObject 2017-07-24 13:35:11 +02:00
qom cpu: add APIs to allocate/free CPU environment 2017-08-08 00:31:09 +03:00
replay -----BEGIN PGP SIGNATURE----- 2017-06-05 10:09:14 +01:00
roms pseries: Update SLOF firmware image 2017-07-25 14:35:42 +10:00
scripts checkpatch: check trace-events code style 2017-08-01 12:13:07 +01:00
slirp slirp: check len against dhcp options array end 2017-08-03 00:26:44 +02:00
stubs migration: Move check_migratable() into qdev.c 2017-05-17 12:04:59 +02:00
target Queued misc tcg patches 2017-08-04 14:23:29 +01:00
tcg tcg: Increase minimum alignment from tcg_malloc to 8 2017-08-03 11:00:30 -07:00
tests block/null: Remove 'filename' option 2017-08-08 15:19:16 +02:00
trace trace: add trace_event_get_state_backends() 2017-08-01 12:13:07 +01:00
ui docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
util docs: fix broken paths to docs/devel/tracing.txt 2017-07-31 13:12:53 +03:00
.dir-locals.el
.editorconfig add editorconfig 2017-07-20 09:56:56 +02:00
.exrc
.gdbinit .gdbinit: load QEMU sub-commands when gdb starts 2017-06-07 14:38:45 +01:00
.gitignore coccinelle: ignore ASTs pre-parsed cached C files 2017-07-19 14:45:15 -07:00
.gitmodules Add QemuMacDrivers as submodule 2017-05-11 09:45:15 +10:00
.mailmap
.shippable.yml shippable: add win32/64 targets 2017-07-18 10:58:36 +01:00
.travis.yml travis: move make -j flag out of script 2017-07-18 09:39:19 +01:00
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
balloon.c trace: switch to modular code generation for sub-directories 2017-01-31 17:11:18 +00:00
block.c block: Allow reopen rw without BDRV_O_ALLOW_RDWR 2017-08-08 15:19:16 +02:00
blockdev-nbd.c nbd: Fix regression on resiliency to port scan 2017-06-15 11:04:05 +02:00
blockdev.c block: Use JSON null instead of "" to disable backing file 2017-07-24 13:35:11 +02:00
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 Makefile: Move bootdevice.o to common-obj-y 2017-07-04 14:39:27 +02:00
bt-host.c
bt-vhci.c
Changelog
CODING_STYLE coding_style: add point about 0x in trace-events 2017-08-01 12:13:07 +01:00
configure build-sys: add --disable-vhost-user 2017-08-03 15:55:41 +03:00
COPYING
COPYING.LIB
cpus-common.c
cpus.c Convert error_report() to warn_report() 2017-07-13 13:49:58 +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: Add lock parameter to qemu_ram_ptr_length 2017-08-01 17:27:33 +02:00
gdbstub.c Use qemu_tolower() and qemu_toupper(), not tolower() and toupper() 2017-07-21 10:32:41 +01:00
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 s390x/migration: Monitor commands for storage attributes 2017-07-14 12:29:47 +02:00
hmp-commands.hx s390x/kvm/migration/cpumodel: fixes, enhancements and cleanups 2017-07-14 14:19:35 +01:00
hmp.c migration: Use JSON null instead of "" to reset parameter to default 2017-07-24 13:35:11 +02:00
hmp.h hmp: add hmp analogue for qmp-chardev-change 2017-07-14 11:04:34 +02:00
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 tests/hmp: Fix typo in the 'chardev-send-break' test 2017-08-02 15:51:52 +01:00
Makefile build-sys: there is no qemu-ga.c 2017-07-31 13:06:38 +03:00
Makefile.objs configure: Don't build ivshmem tools unless CONFIG_IVSHMEM is set 2017-07-20 14:58:19 +01:00
Makefile.target trace: ensure .stp files are rebuilt if trace tool source changes 2017-08-01 10:36:29 +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 migration: optimize the downtime 2017-08-01 17:27:33 +02:00
module-common.c
monitor.c monitor: Reduce handle_qmp_command() tracing overhead 2017-08-01 12:13:07 +01:00
numa.c memory: Rename memory_region_init_ram() to memory_region_init_ram_nomigrate() 2017-07-14 17:59:42 +01:00
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 docs: fix broken paths to docs/interop dir 2017-07-31 13:06:52 +03:00
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 docs: document deprecation policy & deprecated features in appendix 2017-08-01 17:27:33 +02:00
qemu-ga.texi
qemu-img-cmds.hx qemu-img: Check for backing image if specified during create 2017-07-18 15:27:37 +02:00
qemu-img.c maint: Reorder include directives for qemu-{nbd, io} 2017-07-24 08:53:08 -05:00
qemu-img.texi qemu-img: Check for backing image if specified during create 2017-07-18 15:27:37 +02:00
qemu-io-cmds.c block: Add PreallocMode to blk_truncate() 2017-07-11 17:45:01 +02:00
qemu-io.c block: rip out all traces of password prompting 2017-07-11 17:44:56 +02:00
qemu-nbd.c maint: Reorder include directives for qemu-{nbd, io} 2017-07-24 08:53:08 -05:00
qemu-nbd.texi
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 qemu-options: document existance of versioned machine types 2017-08-01 17:27:33 +02:00
qemu-seccomp.c
qemu-tech.texi
qemu.nsi
qemu.sasl Default to GSSAPI (Kerberos) instead of DIGEST-MD5 for SASL 2017-05-09 14:41:47 +01:00
qmp.c qmp: Include parent type on 'qom-list-types' output 2017-07-17 15:41:30 -03:00
qtest.c char: add backend hotswap handler 2017-07-14 11:04:33 +02:00
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
thunk.c thunk: assert nb_fields is valid 2017-07-31 13:06:39 +03:00
tpm.c
trace-events trace-events: fix code style: %# -> 0x% 2017-08-01 12:13:07 +01:00
user-exec-stub.c stubs: group stubs for user-mode emulation 2017-01-16 17:52:35 +01:00
user-exec.c Replace 'struct ucontext' with 'ucontext_t' type 2017-07-20 10:10:28 +01:00
VERSION Update version for v2.10.0-rc1 release 2017-08-02 16:36:32 +01:00
version.rc
vl.c char: don't exit on hmp 'chardev-add help' 2017-08-01 17:27:33 +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