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Denis V. Lunev 006e196244 block: use bdrv_is_sg() helper instead of raw bs->sg reading
I believe that if the helper exists, it must be used always for reading
of the value. It breaks expectations in the other case.

Signed-off-by: Denis V. Lunev <den@openvz.org>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Hanna Reitz <hreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <fam@euphon.net>
CC: Ronnie Sahlberg <ronniesahlberg@gmail.com>
CC: Paolo Bonzini <pbonzini@redhat.com>
CC: Peter Lieven <pl@kamp.de>
CC: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20220817083736.40981-2-den@openvz.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2022-09-30 18:43:44 +02:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates
.gitlab-ci.d .gitlab-ci.d/windows.yml: Display meson test logs 2022-09-27 20:51:21 +02:00
accel linux-user: Passthrough MADV_DONTNEED for certain file mappings 2022-09-27 09:30:46 +02:00
audio audio: remove abort() in audio_bug() 2022-09-27 07:32:31 +02:00
authz
backends tpm_emulator: Have swtpm relock storage upon migration fall-back 2022-09-13 10:27:17 -04:00
block block: use bdrv_is_sg() helper instead of raw bs->sg reading 2022-09-30 18:43:44 +02:00
bsd-user bsd-user: Remove stray 'inline' from do_bsd_close 2022-07-02 07:52:48 -06:00
chardev chardev/baum: Avoid dynamic stack allocation 2022-09-22 16:38:28 +01:00
common-user common-user: Only compile the common user code if have_user is set 2022-06-28 11:12:05 +02:00
configs target/openrisc: Enable MTTCG 2022-09-04 07:02:57 +01:00
contrib contrib/vhost-user-blk: Clean up deallocation of VuVirtqElement 2022-08-08 07:19:26 +02:00
crypto crypto: Make block callbacks return 0 on success 2022-07-12 12:14:55 +02:00
disas target/riscv: Remove sideleg and sedeleg 2022-09-27 07:04:38 +10:00
docs qemu-img: Wean documentation and help output off '?' for help 2022-09-30 18:02:30 +02:00
dtc@b6910bec11 dtc: Update to version 1.6.1 2021-10-14 08:08:11 +02:00
dump dump/win_dump: add 32-bit guest Windows support 2022-04-22 13:41:56 +04:00
ebpf ebpf: replace deprecated bpf_program__set_socket_filter 2022-07-06 11:39:09 +08:00
fpu fpu: Add rebias bool, value and operation 2022-08-31 14:08:05 -03:00
fsdev Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
gdb-xml target/riscv: remove fixed numbering from GDB xml feature files 2022-09-27 07:04:38 +10:00
hw block: add missed block_acct_setup with new block device init procedure 2022-09-30 18:42:34 +02:00
include block: add missed block_acct_setup with new block device init procedure 2022-09-30 18:42:34 +02:00
io io/channel-websock: Replace strlen(const_str) by sizeof(const_str) - 1 2022-09-22 16:38:28 +01:00
libdecnumber libdecnumber: Introduce decNumberIntegralToInt128 2021-11-09 10:32:52 +11:00
linux-headers Update linux headers to v6.0-rc4 2022-09-26 17:23:47 +02:00
linux-user linux-user pull request 20220928-v2 2022-09-28 17:03:54 -04:00
meson@12f9f04ba0 meson: bump submodule to 0.59.3 2021-11-02 15:57:28 +01:00
migration migration: Define BLK_MIG_BLOCK_SIZE as unsigned long long 2022-08-02 16:46:52 +01:00
monitor monitor/hmp: print trace as option in help for log command 2022-09-15 12:19:08 +01:00
nbd block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
net virtio: del net client if net_init_tap_one failed 2022-09-27 15:14:37 +08:00
pc-bios roms/opensbi: Upgrade from v1.0 to v1.1 2022-09-07 09:18:32 +02:00
plugins meson: remove dead assignments 2022-09-01 07:42:37 +02:00
po po: add ukrainian translation 2022-07-05 10:15:49 +02:00
python misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
qapi audio: Add sndio backend 2022-09-27 07:32:31 +02:00
qga qga: Replace 'blacklist' and 'whitelist' in the guest agent sources 2022-09-20 12:37:00 +02:00
qobject include/qapi: add g_autoptr support for qobject types 2022-04-06 10:50:38 +02:00
qom include: add qemu/keyval.h 2022-04-21 17:03:51 +04:00
replay replay: simplify async event processing 2022-06-06 09:26:53 +02:00
roms qboot: update to latest submodule 2022-09-19 15:40:51 +02:00
scripts * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
scsi QIOChannel: Add flags on io_writev and introduce io_flush callback 2022-05-16 13:56:24 +01:00
semihosting semihosting: Allow optional use of semihosting from userspace 2022-09-13 17:18:21 +01:00
softmmu ui/cocoa: Run qemu_init in the main thread 2022-09-23 14:36:33 +02:00
storage-daemon qsd: Unlink absolute PID file path 2022-07-12 14:30:38 +02:00
stubs semihosting: Allow optional use of semihosting from userspace 2022-09-13 17:18:21 +01:00
subprojects libvduse: Pass positive value to strerror() 2022-08-02 11:01:42 +02:00
target linux-user pull request 20220928-v2 2022-09-28 17:03:54 -04:00
tcg misc: fix commonly doubled up words 2022-08-01 11:58:02 +02:00
tests block: add missed block_acct_setup with new block device init procedure 2022-09-30 18:42:34 +02:00
tools virtiofsd: use g_date_time_get_microsecond to get subsecond 2022-09-22 13:13:47 -04:00
trace error: use GLib to remember the program name 2022-03-22 14:46:18 +04:00
ui usb: make usbnet work with xhci. 2022-09-27 07:59:26 -04:00
util s390x/s390-virtio-ccw: add zpcii-disable machine property 2022-09-26 17:23:47 +02:00
.cirrus.yml ci: Upgrade msys2 release to 20220603 2022-07-29 10:33:29 -07:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitattributes gitattributes: Cover Objective-C source files 2022-03-29 00:15:14 +02:00
.gitignore .gitignore: add .gcov pattern 2022-02-09 12:08:41 +00:00
.gitlab-ci.yml docs: Document GitLab custom CI/CD variables 2021-07-29 07:56:01 +02:00
.gitmodules Remove the slirp submodule (i.e. compile only with an external libslirp) 2022-09-26 17:23:47 +02:00
.gitpublish
.mailmap MAINTAINERS/.mailmap: update email for Leif Lindholm 2022-05-09 11:47:53 +01:00
.patchew.yml
.readthedocs.yml
.travis.yml Revert "gitlab: disable accelerated zlib for s390x" 2022-07-20 12:15:09 +01:00
block.c block: Change blk_{pread,pwrite}() param order 2022-07-12 12:14:56 +02:00
blockdev-nbd.c nbd/server: Allow MULTI_CONN for shared writable exports 2022-05-12 13:10:52 +02:00
blockdev.c block: pass OnOffAuto instead of bool to block_acct_setup() 2022-09-30 18:02:30 +02:00
blockjob.c assertions for blockjob.h global state API 2022-03-04 18:18:25 +01:00
configure * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
COPYING
COPYING.LIB
cpu.c util/log: Remove qemu_log_close 2022-04-20 10:51:11 -07:00
cpus-common.c cpus: Introduce cpu_list_generation_id 2022-07-20 12:15:08 +01:00
disas.c disas: Remove libvixl disassembler 2022-07-05 10:15:49 +02:00
event-loop-base.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
gdbstub.c gdbstub: Adjust gdb_syscall_complete_cb declaration 2022-06-28 04:35:52 +05:30
gitdm.config contrib/gitdm: add a new interns group-map for GSoC/Outreachy work 2021-07-23 17:22:16 +01:00
hmp-commands-info.hx monitor: Support specified vCPU registers 2022-09-15 11:58:37 +01:00
hmp-commands.hx hmp: Fix ordering of text 2022-09-15 14:13:30 +01:00
iothread.c util/event-loop-base: Introduce options to set the thread pool size 2022-05-09 10:43:23 +01:00
job-qmp.c
job.c job.h: assertions in the callers of JobDriver function pointers 2022-03-04 18:18:26 +01:00
Kconfig meson: Introduce target-specific Kconfig 2021-07-09 18:21:34 +02:00
Kconfig.host vfio-user: build library 2022-06-15 16:42:33 +01:00
LICENSE
MAINTAINERS * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
Makefile build: remove extra parentheses causing missing rebuilds 2022-09-19 15:16:00 +02:00
memory_ldst.c.inc
meson_options.txt * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
meson.build * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
module-common.c
os-posix.c os-posix: replace pipe()+cloexec with g_unix_open_pipe(CLOEXEC) 2022-05-03 15:46:17 +04:00
os-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary-common.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary.c include: move target page bits declaration to page-vary.h 2022-04-06 14:31:43 +02:00
qemu-bridge-helper.c
qemu-edid.c edid: set default resolution to 1280x800 (WXGA) 2022-01-13 10:59:16 +01:00
qemu-img-cmds.hx qemu-img: Unify [-b [-F]] documentation 2022-02-01 13:49:15 +01:00
qemu-img.c qemu-img: Wean documentation and help output off '?' for help 2022-09-30 18:02:30 +02:00
qemu-io-cmds.c block: Change blk_pwrite_compressed() param order 2022-07-12 12:14:56 +02:00
qemu-io.c include: move qemu_*_exec_dir() to cutils 2022-05-28 11:42:56 +02:00
qemu-keymap.c qemu-keymap: Add license in generated files 2021-12-17 10:41:50 +01:00
qemu-nbd.c qemu-nbd: Pass max connections to blockdev layer 2022-05-12 13:10:52 +02:00
qemu-options.hx * Fix emulation of the LZRF instruction 2022-09-27 11:06:52 -04:00
qemu.nsi nsis installer: Fix mouse-over descriptions for emulators 2022-03-18 10:55:15 +00:00
qemu.sasl
README.rst README.rst: fix link formatting 2022-08-04 13:44:21 +02:00
replication.c
trace-events tracing: remove TCG memory access tracing 2022-02-09 12:08:42 +00:00
VERSION Open 7.2 development tree 2022-08-30 09:40:41 -07:00
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.


Documentation
=============

Documentation can be found hosted online at
`<https://www.qemu.org/documentation/>`_. The documentation for the
current development version that is available at
`<https://www.qemu.org/docs/master/>`_ is generated from the ``docs/``
folder in the source tree, and is built by `Sphinx
<https://www.sphinx-doc.org/en/master/>`_.


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


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

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

.. code-block:: shell

   git clone https://gitlab.com/qemu-project/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 `style section
<https://www.qemu.org/docs/master/devel/style.html>`_ of
the Developers Guide.

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

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

The QEMU website is also maintained under source control.

.. code-block:: shell

  git clone https://gitlab.com/qemu-project/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 GitLab issues to track bugs. Bugs
found when running code built from QEMU git or upstream released sources
should be reported via:

* `<https://gitlab.com/qemu-project/qemu/-/issues>`_

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 GitLab.

For additional information on bug reporting consult:

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