QEMU With E2K User Support
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Eric Blake 093ea232b0 qemu-io: Allow unaligned access by default
There's no reason to require the user to specify a flag just so
they can pass in unaligned numbers.  Keep 'read -p' and 'write -p'
as no-ops so that I don't have to hunt down and update all users
of qemu-io, but otherwise make their behavior default as 'read' and
'write'.  Also fix 'write -z', 'readv', 'writev', 'writev',
'aio_read', 'aio_write', and 'aio_write -z'.  For now, 'read -b',
'write -b', and 'write -c' still require alignment (and 'multiwrite',
but that's slated to die soon).

qemu-iotest 23 is updated to match, as the only test that was
previously explicitly expecting an error on an unaligned request.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1462677405-4752-5-git-send-email-eblake@redhat.com
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
2016-05-12 15:33:24 +02:00
audio
backends hostmem-file: plug a small leak 2016-04-15 17:56:06 +02:00
block quorum: implement bdrv_add_child() and bdrv_del_child() 2016-05-12 15:33:23 +02:00
bsd-user bsd-user: Suppress gcc 4.x -Wpointer-sign (included in -Wall) warning 2016-04-05 17:49:41 +01:00
contrib
crypto
default-configs
disas
docs fw_cfg: Adopt /opt/RFQDN convention 2016-04-19 16:09:50 +02:00
dtc@65cc4d2748
fpu
fsdev
gdb-xml
hw atapi: Switch to byte-based block access 2016-05-12 15:22:09 +02:00
include quorum: implement bdrv_add_child() and bdrv_del_child() 2016-05-12 15:33:23 +02:00
io
libdecnumber
linux-headers
linux-user
migration
nbd block: Allow BDRV_REQ_FUA through blk_pwrite() 2016-05-12 15:22:08 +02:00
net filter-buffer: fix segfault when starting qemu with status=off property 2016-04-06 09:52:07 +08:00
pc-bios Update OpenBIOS images 2016-04-18 09:38:55 +01:00
pixman@87eea99e44
po Update language files for QEMU 2.6.0 2016-04-19 18:41:25 +01:00
qapi qmp: add monitor command to add/remove a child 2016-05-12 15:33:23 +02:00
qga qga: Workaround for console redirection from non-interactive qemu-ga service 2016-04-07 11:43:54 -05:00
qobject
qom qom: -object error messages lost location, restore it 2016-04-28 08:19:36 +02:00
replay replay: Fix dangling location bug in replay_configure() 2016-04-28 08:19:20 +02:00
roms Update OpenBIOS images 2016-04-18 09:38:55 +01:00
scripts
slirp slirp: fix guest network access with darwin host 2016-04-28 18:12:08 +01:00
stubs event-notifier: Add "is_external" parameter 2016-04-22 16:43:56 +02:00
target-alpha
target-arm
target-cris
target-i386 event-notifier: Add "is_external" parameter 2016-04-22 16:43:56 +02:00
target-lm32
target-m68k
target-microblaze
target-mips target-mips: Fix RDHWR exception host PC 2016-04-28 10:03:24 +01:00
target-moxie
target-openrisc
target-ppc ppc: Fix migration of the XER register 2016-04-18 15:14:38 +10:00
target-s390x
target-sh4
target-sparc target-sparc: fix Trap Based Address Register behavior for sparc64 2016-04-15 09:30:40 +01:00
target-tilegx
target-tricore
target-unicore32
target-xtensa
tcg tcg: check for CONFIG_DEBUG_TCG instead of NDEBUG 2016-04-21 15:43:20 +01:00
tests qemu-io: Allow unaligned access by default 2016-05-12 15:33:24 +02:00
trace
ui input-linux: refine mouse detection 2016-04-13 15:52:28 +02:00
util QemuOpts: Fix qemu_opts_foreach() dangling location regression 2016-04-28 08:18:56 +02:00
.dir-locals.el
.exrc
.gitignore
.gitmodules
.mailmap
.travis.yml
accel.c
aio-posix.c aio-posix: Skip external nodes in aio_dispatch 2016-04-22 16:43:59 +02:00
aio-win32.c
arch_init.c
async.c
balloon.c
block.c quorum: implement bdrv_add_child() and bdrv_del_child() 2016-05-12 15:33:23 +02:00
blockdev-nbd.c
blockdev.c qmp: add monitor command to add/remove a child 2016-05-12 15:33:23 +02:00
blockjob.c
bootdevice.c
bt-host.c
bt-vhci.c
Changelog
CODING_STYLE
configure configure: Check if struct fsxattr is available from linux header 2016-05-02 13:04:26 +01:00
COPYING
COPYING.LIB
cpu-exec-common.c
cpu-exec.c
cpus.c cpus: don't use atomic_read for vm_clock_warp_start 2016-04-05 11:46:52 +02:00
cputlb.c
device_tree.c
device-hotplug.c
disas.c
dma-helpers.c ide: Switch to byte-based aio block access 2016-05-12 15:22:08 +02:00
dump.c
exec.c
gdbstub.c
HACKING
hmp-commands-info.hx
hmp-commands.hx
hmp.c
hmp.h
iohandler.c iohandler: Introduce iohandler_get_aio_context 2016-04-22 16:43:42 +02:00
ioport.c
iothread.c
kvm-all.c
kvm-stub.c
LICENSE
main-loop.c
MAINTAINERS MAINTAINERS: Avoid using K: for NUMA section 2016-04-21 11:40:57 +01:00
Makefile
Makefile.objs
Makefile.target
memory_mapping.c
memory.c
module-common.c
monitor.c
numa.c
os-posix.c
os-win32.c
page_cache.c
qapi-schema.json
qdev-monitor.c
qdict-test-data.txt
qemu-bridge-helper.c
qemu-char.c char: ensure all clients are in non-blocking mode 2016-04-05 11:46:52 +02:00
qemu-doc.texi Allow users to specify the vmdk virtual hardware version. 2016-05-12 15:22:08 +02:00
qemu-ga.texi
qemu-img-cmds.hx
qemu-img.c qemu-img: check block status of backing file when converting. 2016-05-12 15:33:23 +02:00
qemu-img.texi
qemu-io-cmds.c qemu-io: Allow unaligned access by default 2016-05-12 15:33:24 +02:00
qemu-io.c qemu-io: Make 'open' subcommand more like command line 2016-05-12 15:33:24 +02:00
qemu-nbd.c nbd: Switch to byte-based block access 2016-05-12 15:22:09 +02:00
qemu-nbd.texi
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx fw_cfg: Adopt /opt/RFQDN convention 2016-04-19 16:09:50 +02:00
qemu-seccomp.c seccomp: adding sysinfo system call to whitelist 2016-04-16 20:27:44 +02:00
qemu-tech.texi
qemu-timer.c
qemu.nsi
qemu.sasl
qjson.c
qmp-commands.hx qmp: add monitor command to add/remove a child 2016-05-12 15:33:23 +02:00
qmp.c
qtest.c
README
rules.mak
softmmu_template.h
spice-qemu-char.c
tcg-runtime.c
tci.c tci: Fix build regression 2016-04-07 19:01:21 +02:00
thread-pool.c
thunk.c
tpm.c
trace-events virtio: Switch to byte-based aio block access 2016-05-12 15:22:09 +02:00
translate-all.c translate-all: add missing fold of tb_ctx into tcg_ctx 2016-04-08 00:07:56 +02:00
translate-all.h
translate-common.c
user-exec.c
VERSION Open 2.7 development tree 2016-05-12 12:35:25 +01:00
version.rc
vl.c qom: -object error messages lost location, restore it 2016-04-28 08:19:36 +02:00
xen-common-stub.c
xen-common.c
xen-hvm-stub.c
xen-hvm.c
xen-mapcache.c

         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