QEMU With E2K User Support
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Kevin Wolf 7556a320c9 vhost-user-blk: Get more feature flags from vhost device
VIRTIO_F_RING_PACKED and VIRTIO_F_IOMMU_PLATFORM need to be supported by
the vhost device, otherwise advertising it to the guest doesn't result
in a working configuration. They are currently not supported by the
vhost-user-blk export in QEMU.

Fixes: https://bugzilla.redhat.com/show_bug.cgi?id=1935020
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20210429171316.162022-5-kwolf@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2021-05-18 12:57:38 +02:00
.github .github: point Repo Lockdown bot to GitLab repo 2021-02-09 20:53:56 +00:00
.gitlab-ci.d gitlab-ci: Replace YAML anchors by extends (container_job) 2021-05-14 12:28:01 +02:00
accel accel: add init_accel_cpu for adapting accel behavior to CPU type 2021-05-10 15:41:52 -04:00
audio coreaudio: Handle output device change 2021-03-16 07:17:50 +01:00
authz authz-simple: Check that 'identity' property is set 2020-11-18 10:51:35 +00:00
backends backends/tpm: Replace qemu_mutex_lock calls with QEMU_LOCK_GUARD 2021-05-13 17:43:56 +02:00
block block/export: improve vu_blk_sect_range_ok() 2021-05-18 11:08:13 +02:00
bsd-user accel: move call to accel_init_interfaces 2021-05-10 15:41:52 -04:00
capstone@f8b1b83301 capstone: Update to upstream "next" branch 2020-10-03 04:23:14 -05:00
chardev Do not include sysemu/sysemu.h if it's not really necessary 2021-05-02 17:24:50 +02:00
contrib Fix build with 64 bits time_t 2021-05-14 10:26:18 -04:00
crypto crypto: add reload for QCryptoTLSCredsClass 2021-03-23 08:48:21 +01:00
default-configs Miscellaneous patches for 2021-05-12 2021-05-13 20:13:24 +01:00
disas Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
docs Block patches: 2021-05-17 11:29:59 +01:00
dtc@85e5d83984
dump Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
fpu Miscellaneous patches for 2021-05-12 2021-05-13 20:13:24 +01:00
fsdev meson: Declare have_virtfs_proxy_helper in main meson.build 2021-01-23 15:55:04 -05:00
gdb-xml target/riscv: Remove built-in GDB XML files for CSRs 2021-01-16 10:57:21 -08:00
hw vhost-user-blk: Get more feature flags from vhost device 2021-05-18 12:57:38 +02:00
include Block patches: 2021-05-17 11:29:59 +01:00
io io: error_prepend() in qio_channel_readv_full_all() causes segfault 2021-02-12 07:50:59 -06:00
libdecnumber
linux-headers Update linux headers to 5.11-rc2 2021-01-21 11:19:45 +01:00
linux-user accel: move call to accel_init_interfaces 2021-05-10 15:41:52 -04:00
meson@776acd2a80 submodules: bump meson to 0.55.3 2020-10-17 10:45:42 -04:00
migration * Replace YAML anchors by extends in the gitlab-CI yaml files 2021-05-14 19:33:23 +01:00
monitor Migration pull 2021-05-13 2021-05-14 12:03:47 +01:00
nbd nbd: server: Report holes for raw images 2021-03-08 13:08:45 -06:00
net * NetBSD NVMM support 2021-05-06 18:56:17 +01:00
pc-bios pc-bios/s390-ccw: Fix inline assembly for older versions of Clang 2021-05-14 12:38:43 +02:00
plugins Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
po configure: move gettext detection to meson.build 2021-01-02 21:03:09 +01:00
python Python: close the log file kept by QEMUMachine before reading it 2021-02-15 21:40:16 -05:00
qapi Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
qga qga: fix guest-get-disks regression 2021-04-20 16:27:45 +01:00
qobject qobject: braces {} are necessary for all arms of this statement 2021-02-04 13:20:29 +01:00
qom * Updates for the MAINTAINERS file 2021-04-01 23:34:16 +01:00
replay replay: notify CPU on event 2021-04-01 10:37:20 +02:00
roms roms/u-boot: Bump ppce500 u-boot to v2021.04 to fix broken pci support 2021-05-04 11:41:25 +10:00
scripts pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
scsi scsi: fix sense code for EREMOTEIO 2021-03-16 14:30:30 -04:00
semihosting Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
slirp@8f43a99191 slirp: update to fix CVE-2020-29129 CVE-2020-29130 2020-11-27 20:57:11 +04:00
softmmu Migration pull 2021-05-13 2021-05-14 12:03:47 +01:00
storage-daemon qsd: Document FUSE exports 2021-03-29 18:28:33 +02:00
stubs usb: fix some memory allocation issues (CVE-2021-3527). 2021-05-10 19:55:06 +01:00
subprojects/libvhost-user build-sys: add libvhost-user missing dependencies 2021-01-23 09:26:41 -05:00
target Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
tcg Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
tests vhost-user-blk-test: test discard/write zeroes invalid inputs 2021-05-18 12:57:38 +02:00
tools virtiofsd: Fix check of chown()'s return value 2021-05-13 17:48:47 +02:00
trace trace: fix "-trace file=..." 2021-03-06 11:42:57 +01:00
ui ui: Fix memory leak in qemu_xkeymap_mapping_table() 2021-05-02 17:24:50 +02:00
util Pull request trivial-branch 20210515 2021-05-17 16:44:47 +01:00
.cirrus.yml cirrus.yml: Fix the MSYS2 task 2021-05-14 13:11:48 +02:00
.dir-locals.el
.editorconfig .editorconfig: update the automatic mode setting for Emacs 2021-03-10 15:34:11 +00:00
.exrc
.gdbinit
.gitattributes maint: Tell git that *.py files should use python diff hunks 2021-02-15 22:13:34 -05:00
.gitignore Makefile: add GNU global tags support 2021-01-18 10:04:31 +00:00
.gitlab-ci.yml gitlab-ci: Replace YAML anchors by extends (native_test_job) 2021-05-14 12:28:01 +02:00
.gitmodules gitmodules: use GitLab repos instead of qemu.org 2021-02-09 20:53:56 +00:00
.gitpublish
.mailmap MAINTAINERS: chenhc@lemote.com -> chenhuacai@kernel.org 2020-12-13 16:00:58 +01:00
.patchew.yml
.readthedocs.yml readthedocs: build with Python 3.6 2020-10-05 16:30:45 +01:00
.travis.yml travis.yml: Limit simultaneous jobs to 3 2021-02-19 06:31:40 +01:00
COPYING
COPYING.LIB
Kconfig semihosting: Move hw/semihosting/ -> semihosting/ 2021-03-10 15:34:12 +00:00
Kconfig.host multi-process: Add config option for multi-process QEMU 2021-02-09 20:53:56 +00:00
LICENSE
MAINTAINERS test: new qTest case to test the vhost-user-blk-server 2021-05-18 12:57:38 +02:00
Makefile configure: Poison all current target-specific #defines 2021-05-14 12:32:17 +02:00
README.rst README: Add Documentation blurb 2021-03-12 15:46:30 +01:00
VERSION Open 6.1 development tree 2021-04-30 11:15:40 +01:00
block.c block: Fix Transaction leak in bdrv_reopen_multiple() 2021-05-18 11:08:13 +02:00
blockdev-nbd.c qemu-nbd: Use SOMAXCONN for socket listen() backlog 2021-02-12 07:42:08 -06:00
blockdev.c block: bdrv_append(): don't consume reference 2021-04-30 12:27:47 +02:00
blockjob.c ratelimit: protect with a mutex 2021-05-04 14:15:35 +02:00
configure configure: Poison all current target-specific #defines 2021-05-14 12:32:17 +02:00
cpu.c accel-cpu: make cpu_realizefn return a bool 2021-05-10 15:41:50 -04:00
cpus-common.c overall/alpha tcg cpus|hppa: Fix Lesser GPL version number 2020-11-15 16:43:54 +01:00
disas.c Do not include cpu.h if it's not really necessary 2021-05-02 17:24:51 +02:00
gdbstub.c Do not include sysemu/sysemu.h if it's not really necessary 2021-05-02 17:24:50 +02:00
gitdm.config
hmp-commands-info.hx migrate: remove QMP/HMP commands for speed, downtime and cache size 2021-03-18 09:22:55 +00:00
hmp-commands.hx block: Remove monitor command block_passwd 2021-03-23 22:31:56 +01:00
iothread.c multi-process: define MPQemuMsg format and transmission functions 2021-02-10 09:23:28 +00:00
job-qmp.c qapi: Use QAPI_LIST_APPEND in trivial cases 2021-01-28 08:08:45 +01:00
job.c mirror: stop cancelling in-flight requests on non-force cancel in READY 2021-05-14 16:14:10 +02:00
memory_ldst.c.inc fuzz: ignore address_space_map is_write flag 2021-02-08 14:43:54 +01:00
meson.build Drop the deprecated lm32 target 2021-05-12 18:20:25 +02:00
meson_options.txt Add NVMM accelerator: configure and build logic 2021-05-04 14:15:34 +02:00
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 vl: relocate paths to data directories 2020-09-30 19:11:36 +02:00
page-vary-common.c exec: Build page-vary-common.c with -fno-lto 2021-03-23 19:36:47 -06:00
page-vary.c exec: Build page-vary-common.c with -fno-lto 2021-03-23 19:36:47 -06:00
qemu-bridge-helper.c qemu-bridge-helper: relocate path to default ACL 2020-09-30 19:11:36 +02:00
qemu-edid.c qemu-edid: use qemu_edid_size() 2021-05-10 11:41:02 +02:00
qemu-img-cmds.hx qemu-img: add support for rate limit in qemu-img convert 2020-10-27 15:26:20 +01:00
qemu-img.c qemu-img convert: Unshare write permission for source 2021-04-30 12:27:48 +02:00
qemu-io-cmds.c monitor: hmp_qemu_io: acquire aio contex, fix crash 2021-05-14 16:14:10 +02:00
qemu-io.c monitor: hmp_qemu_io: acquire aio contex, fix crash 2021-05-14 16:14:10 +02:00
qemu-keymap.c
qemu-nbd.c qemu-nbd: Use user_creatable_process_cmdline() for --object 2021-03-19 10:17:14 +01:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx pc,pci,virtio: bugfixes, improvements 2021-05-16 17:22:46 +01:00
qemu.nsi nsis: adjust for new MinGW paths 2021-01-23 15:55:05 -05:00
qemu.sasl
replication.c
replication.h
thunk.c overall usermode...: Fix Lesser GPL version number 2020-11-15 16:43:40 +01:00
trace-events
version.rc configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION 2021-01-02 21:03:37 +01:00

README.rst

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