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Vladimir Sementsov-Ogievskiy 63f4ad1186 block/io: improve bdrv_check_request: check qiov too
Operations with qiov add more restrictions on bytes, let's cover it.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20201211183934.169161-8-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
2021-02-03 08:14:00 -06:00
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.gitlab-ci.d gitlab-ci: Add alpine to pipeline 2021-01-20 10:46:54 +01:00
accel hvf: Add hypervisor entitlement to output binaries 2021-01-29 10:47:28 +00:00
audio
authz
backends hostmem-file: add readonly=on|off option 2021-02-01 17:07:34 -05:00
block block/io: improve bdrv_check_request: check qiov too 2021-02-03 08:14:00 -06:00
bsd-user
capstone@f8b1b83301
chardev
contrib elf2dmp: Rename PAGE_SIZE to ELF2DMP_PAGE_SIZE 2021-01-20 10:46:54 +01:00
crypto crypto: Add spaces around operator 2021-01-29 17:07:53 +00:00
default-configs
disas build-system: clean up TCG/TCI configury 2021-01-21 13:00:41 +01:00
docs Machine queue, 2021-02-02 2021-02-03 09:54:21 +00:00
dtc@85e5d83984
dump qapi: More complex uses of QAPI_LIST_APPEND 2021-01-28 08:08:45 +01:00
fpu
fsdev meson: Declare have_virtfs_proxy_helper in main meson.build 2021-01-23 15:55:04 -05:00
gdb-xml
hw nvdimm: check -object memory-backend-file, readonly=on option 2021-02-01 17:07:34 -05:00
include block/throttle-groups: throttle_group_co_io_limits_intercept(): 64bit bytes 2021-02-03 08:14:00 -06:00
io
libdecnumber
linux-headers Update linux headers to 5.11-rc2 2021-01-21 11:19:45 +01:00
linux-user linux-user: Remove obsolete F_SHLCK and F_EXLCK translation 2021-01-21 13:27:34 +01:00
meson@776acd2a80
migration qapi: More complex uses of QAPI_LIST_APPEND 2021-01-28 08:08:45 +01:00
monitor qapi: More complex uses of QAPI_LIST_APPEND 2021-01-28 08:08:45 +01:00
nbd nbd/server: Quiesce coroutines on context switch 2021-01-20 14:48:54 -06:00
net Trivial patches 20210129 2021-01-29 10:10:43 +00:00
pc-bios meson.build: Detect bzip2 program 2021-01-23 15:55:07 -05:00
plugins
po
python
qapi qapi: backup: disable copy_range by default 2021-01-26 14:36:37 +01:00
qga qapi: More complex uses of QAPI_LIST_APPEND 2021-01-28 08:08:45 +01:00
qobject
qom
replay
roms
scripts simpletrace: build() missing 2 required positional arguments 2021-02-01 10:51:00 +00:00
scsi qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
slirp@8f43a99191
softmmu Machine queue, 2021-02-02 2021-02-03 09:54:21 +00:00
storage-daemon block: move blk_exp_close_all() to qemu_cleanup() 2021-02-02 13:23:47 +01:00
stubs
subprojects/libvhost-user build-sys: add libvhost-user missing dependencies 2021-01-23 09:26:41 -05:00
target target-arm queue: 2021-01-29 17:22:53 +00:00
tcg tcg/tci: Restrict tci_write_reg16() to 64-bit hosts 2021-01-27 17:15:40 +01:00
tests block: refactor bdrv_check_request: add errp 2021-02-03 08:00:33 -06:00
tools
trace trace: add meson custom_target() depend_files for tracetool 2021-02-01 10:50:55 +00:00
ui ui: update keycodemapdb submodule commit 2021-01-29 17:07:53 +00:00
util util/iov: make qemu_iovec_init_extended() honest 2021-02-03 08:00:33 -06:00
.cirrus.yml
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitattributes
.gitignore
.gitlab-ci.yml gitlab-ci.yml: Avoid recompiling the sources in the test jobs 2021-01-27 04:47:40 +01:00
.gitmodules
.gitpublish
.mailmap
.patchew.yml
.readthedocs.yml
.shippable.yml
.travis.yml
block.c block: move blk_exp_close_all() to qemu_cleanup() 2021-02-02 13:23:47 +01:00
blockdev-nbd.c
blockdev.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
blockjob.c blockjob: add set_speed to BlockJobDriver 2021-01-26 14:36:37 +01:00
CODING_STYLE.rst
configure * Replace --enable/disable-git-update with --with-git-submodules 2021-01-29 19:51:25 +00:00
COPYING
COPYING.LIB
cpu.c
cpus-common.c
disas.c
exec-vary.c
gdbstub.c
gitdm.config
hmp-commands-info.hx
hmp-commands.hx hmp: remove "change vnc TARGET" command 2021-01-23 15:55:07 -05:00
iothread.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
job-qmp.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
job.c job: call job_enter from job_pause 2021-01-26 14:36:37 +01:00
Kconfig
Kconfig.host
LICENSE
MAINTAINERS MAINTAINERS: Add Vladimir as co-maintainer for Block Jobs 2021-02-02 13:23:47 +01:00
Makefile configure: replace --enable/disable-git-update with --with-git-submodules 2021-01-29 17:07:53 +00:00
memory_ldst.c.inc
meson_options.txt meson: convert wixl detection to Meson 2021-01-23 15:55:05 -05:00
meson.build trace: add meson custom_target() depend_files for tracetool 2021-02-01 10:50:55 +00:00
module-common.c
os-posix.c os: deprecate the -enable-fips option and QEMU's FIPS enforcement 2021-01-29 17:07:53 +00:00
os-win32.c
qemu-bridge-helper.c
qemu-edid.c
qemu-img-cmds.hx
qemu-img.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
qemu-io-cmds.c
qemu-io.c
qemu-keymap.c
qemu-nbd.c block: move blk_exp_close_all() to qemu_cleanup() 2021-02-02 13:23:47 +01:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx hostmem-file: add readonly=on|off option 2021-02-01 17:07:34 -05:00
qemu.nsi nsis: adjust for new MinGW paths 2021-01-23 15:55:05 -05:00
qemu.sasl
README.rst
replication.c
replication.h
thunk.c
trace-events
VERSION
version.rc

===========
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:


.. code-block:: shell

  mkdir build
  cd build
  ../configure
  make

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

* `<https://qemu.org/Hosts/Linux>`_
* `<https://qemu.org/Hosts/Mac>`_
* `<https://qemu.org/Hosts/W32>`_


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

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

.. code-block:: shell

   git clone https://git.qemu.org/git/qemu.git

When submitting patches, one common 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 CODING_STYLE.rst file.

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

* `<https://qemu.org/Contribute/SubmitAPatch>`_
* `<https://qemu.org/Contribute/TrivialPatches>`_

The QEMU website is also maintained under source control.

.. code-block:: shell

  git clone https://git.qemu.org/git/qemu-web.git

* `<https://www.qemu.org/2017/02/04/the-new-qemu-website-is-up/>`_

A 'git-publish' utility was created to make above process less
cumbersome, and is highly recommended for making regular contributions,
or even just for sending consecutive patch series revisions. It also
requires a working 'git send-email' setup, and by default doesn't
automate everything, so you may want to go through the above steps
manually for once.

For installation instructions, please go to

*  `<https://github.com/stefanha/git-publish>`_

The workflow with 'git-publish' is:

.. code-block:: shell

  $ git checkout master -b my-feature
  $ # work on new commits, add your 'Signed-off-by' lines to each
  $ git publish

Your patch series will be sent and tagged as my-feature-v1 if you need to refer
back to it in the future.

Sending v2:

.. code-block:: shell

  $ git checkout my-feature # same topic branch
  $ # making changes to the commits (using 'git rebase', for example)
  $ git publish

Your patch series will be sent with 'v2' tag in the subject and the git tip
will be tagged as my-feature-v2.

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:

* `<https://qemu.org/Contribute/ReportABug>`_


ChangeLog
=========

For version history and release notes, please visit
`<https://wiki.qemu.org/ChangeLog/>`_ or look at the git history for
more detailed information.


Contact
=======

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

* `<mailto:qemu-devel@nongnu.org>`_
* `<https://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:

* `<https://qemu.org/Contribute/StartHere>`_