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Gert Wollny ae23cd0017 ui/sdl2: set swap interval explicitly when OpenGL is enabled
Before 176e3783f2 (ui/sdl2: OpenGL window context)
SDL_CreateRenderer was called unconditionally setting
the swap interval to 0. Since SDL_CreateRenderer is now no
longer called when OpenGL is enabled, the swap interval is
no longer set explicitly and vsync handling depends on
the environment settings which may lead to a performance
regression with virgl as reported in
   https://gitlab.com/qemu-project/qemu/-/issues/2565

Restore the old vsync handling by explicitly calling
SDL_GL_SetSwapInterval if OpenGL is enabled.

Fixes: 176e3783f2 (ui/sdl2: OpenGL window context)
Closes: https://gitlab.com/qemu-project/qemu/-/issues/2565

Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Acked-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <01020191e05ce6df-84da6386-62c2-4ce8-840e-ad216ac253dd-000000@eu-west-1.amazonses.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2024-09-13 20:12:16 +02:00
.github/workflows github: fix config mistake preventing repo lockdown commenting 2022-04-26 16:12:26 +01:00
.gitlab/issue_templates .gitlab/issue_templates: Move suggestions into comments 2022-12-15 15:19:24 +01:00
.gitlab-ci.d system: Remove support for CRIS target 2024-09-13 20:11:13 +02:00
accel hvf: arm: Implement and use hvf_get_physical_address_range 2024-09-13 15:31:47 +01:00
audio ui: add more tracing for dbus 2024-07-22 12:47:28 +04:00
authz error: Drop superfluous #include "qapi/qmp/qerror.h" 2023-02-23 13:56:14 +01:00
backends qapi/cryptodev: Rename QCryptodevBackendAlgType to *Algo, and drop prefix 2024-09-10 14:03:30 +02:00
block qapi/crypto: Rename QCryptoCipherAlgorithm to *Algo, and drop prefix 2024-09-10 14:03:30 +02:00
bsd-user bsd-user: Handle short reads in mmap_h_gt_g 2024-08-21 09:10:42 +10:00
chardev chardev: set record/replay on the base device of a muxed device 2024-08-16 14:04:19 +01:00
common-user common-user/host/ppc: Implement safe-syscall.inc.S 2023-01-23 14:39:48 -10:00
configs system: Remove support for CRIS target 2024-09-13 20:11:13 +02:00
contrib contrib/plugins/Makefile: Add a 'distclean' target 2024-09-11 09:49:11 +02:00
crypto qapi/crypto: Rename QCryptoAFAlg to QCryptoAFAlgo 2024-09-10 14:03:30 +02:00
disas disas/riscv: Add decode for Zawrs extension 2024-07-18 12:08:44 +10:00
docs target/riscv: Remove the deprecated 'any' CPU type 2024-09-13 20:11:13 +02:00
dump dump: make range overlap check more readable 2024-07-23 20:30:36 +02:00
ebpf qapi/ebpf: Drop temporary 'prefix' 2024-09-10 13:22:47 +02:00
fpu target/cris: Remove the deprecated CRIS target 2024-09-13 20:11:13 +02:00
fsdev configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
gdb-xml Hexagon: lldb read/write predicate registers p0/p1/p2/p3 2024-08-07 20:34:41 -07:00
gdbstub virtio,pci,pc: features,fixes 2024-07-24 09:32:04 +10:00
host/include util/cpuinfo-riscv: Support host/cpuinfo.h for riscv 2024-07-03 10:24:12 -07:00
hw hw/pci-host: remove break after g_assert_not_reached() 2024-09-13 20:12:16 +02:00
include ui/sdl2: ignore GUI keys in SDL_TEXTINPUT handler 2024-09-13 20:12:16 +02:00
io qapi/crypto: Rename QCryptoHashAlgorithm to *Algo, and drop prefix 2024-09-10 14:02:16 +02:00
libdecnumber libdecnumber/dpd/decimal64: Fix compiler warning from Clang 15 2022-11-11 09:13:52 +01:00
linux-headers linux-header: PPC: KVM: Update one-reg ids for DEXCR, HASHKEYR and HASHPKEYR 2024-07-26 09:21:06 +10:00
linux-user linux-user: Remove support for CRIS target 2024-09-13 20:10:50 +02:00
migration migration: Introduce 'qatzip' compression method 2024-09-09 10:55:40 -04:00
monitor gdbstub: move enums into separate header 2024-06-24 10:14:17 +01:00
nbd nbd/server: CVE-2024-7409: Drop non-negotiating clients 2024-08-08 16:25:33 -05:00
net vhost: Add VIRTIO_NET_F_RSC_EXT to vhost feature bits 2024-08-20 06:57:47 -04:00
pc-bios roms/opensbi: Update to v1.5.1 2024-08-06 15:01:01 +10:00
plugins plugins: fix race condition with scoreboards 2024-08-16 14:13:07 +01:00
po po: update Italian translation 2024-08-13 19:01:42 +02:00
python python: Install pycotap in our venv if necessary 2024-09-04 10:52:29 +02:00
qapi system: Remove support for CRIS target 2024-09-13 20:11:13 +02:00
qga docs: Fix some typos (found by typos) and grammar issues 2024-08-16 14:12:59 +01:00
qobject docs/interop: Convert qmp-spec.txt to rST 2023-05-22 10:21:01 +02:00
qom target/sparc/cpu: Rename the CPU models with a "+" in their names 2024-05-05 21:02:47 +01:00
replay Revert "replay: stop us hanging in rr_wait_io_event" 2024-08-16 14:04:19 +01:00
roms roms/opensbi: Update to v1.5.1 2024-08-06 15:01:01 +10:00
scripts target/cris: Remove the deprecated CRIS target 2024-09-13 20:11:13 +02:00
scsi configure, meson: rename targetos to host_os 2023-12-31 09:11:29 +01:00
semihosting semihosting: Restrict to TCG 2024-07-22 09:38:16 +01:00
stats meson: Replace softmmu_ss -> system_ss 2023-06-20 10:01:30 +02:00
storage-daemon Revert "meson: Propagate gnutls dependency" 2024-07-03 18:41:26 +02:00
stubs meson: Drop the .fa library suffix 2024-07-03 18:41:26 +02:00
subprojects libvhost-user: mask F_INFLIGHT_SHMFD if memfd is not supported 2024-07-02 09:27:56 -04:00
system system: replace assert(0) with g_assert_not_reached() 2024-09-13 20:12:16 +02:00
target target/riscv: Remove the deprecated 'any' CPU type 2024-09-13 20:11:13 +02:00
tcg tcg/ppc: Sync tcg_out_test and constraints 2024-08-08 09:03:35 +10:00
tests hw/sensor/tmp105: Lower 4 bit of limit registers are always 0 2024-09-13 20:11:13 +02:00
tools qemu-vmsr-helper: implement --verbose/-v 2024-07-31 13:15:06 +02:00
trace trace: Remove deprecated 'vcpu' field from QMP trace events 2024-06-04 11:53:43 +02:00
ui ui/sdl2: set swap interval explicitly when OpenGL is enabled 2024-09-13 20:12:16 +02:00
util fifo8: introduce fifo8_peek() function 2024-09-13 20:11:13 +02:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.git-blame-ignore-revs metadata: add .git-blame-ignore-revs 2023-04-04 15:56:44 +01:00
.gitattributes gitattributes: Cover Objective-C source files 2022-03-29 00:15:14 +02:00
.gitignore configure: rename --enable-pypi to --enable-download, control subprojects too 2023-06-06 16:30:01 +02:00
.gitlab-ci.yml docs: Document GitLab custom CI/CD variables 2021-07-29 07:56:01 +02:00
.gitmodules meson: subprojects: replace berkeley-{soft,test}float-3 with wraps 2023-06-06 16:30:01 +02:00
.gitpublish
.mailmap MAINTAINERS: Update Sriram Yagnaraman mail address 2024-04-24 16:03:38 +02:00
.patchew.yml scripts/checkpatch: roll diff tweaking into checkpatch itself 2021-06-25 10:08:33 +01:00
.readthedocs.yml readthodocs: fully specify a build environment 2024-01-12 13:23:48 +00:00
.travis.yml .travis.yml: Install python3-tomli in all build jobs 2024-07-02 09:47:47 +02:00
block.c qapi/block-core: Drop temporary 'prefix' 2024-09-10 13:22:47 +02:00
blockdev-nbd.c nbd/server: CVE-2024-7409: Avoid use-after-free when closing server 2024-08-26 08:42:42 -05:00
blockdev.c qapi: blockdev-backup: add discard-source parameter 2024-05-28 15:52:15 +03:00
blockjob.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
configure buildsys: Remove CRIS cross container 2024-09-13 20:10:50 +02:00
COPYING
COPYING.LIB
cpu-common.c cpu-common.c: export cpu_get_free_index to be reused later 2024-07-26 09:21:06 +10:00
cpu-target.c cpu-target: don't set cpu->thread_id to bogus value 2024-06-04 10:02:39 +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
gitdm.config contrib/gitdm: add group map for AMD 2023-03-22 15:08:26 +00:00
hmp-commands-info.hx hmp-commands-info.hx: Add missing info command for stats subcommand 2024-06-30 19:51:44 +03:00
hmp-commands.hx hmp/migration: Fix "migrate" command's documentation 2024-05-08 09:22:37 -03:00
iothread.c iothread: Simplify expression in qemu_in_iothread() 2024-02-13 10:59:25 +03:00
job-qmp.c qapi job: Elide redundant has_FOO in generated C 2022-12-14 20:04:47 +01:00
job.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
Kconfig meson: Introduce target-specific Kconfig 2021-07-09 18:21:34 +02:00
Kconfig.host kconfig: express dependency of individual boards on libfdt 2024-05-10 15:45:15 +02:00
LICENSE
MAINTAINERS MAINTAINERS: Add myself as a reviewer of VT-d 2024-09-13 20:11:13 +02:00
Makefile Makefile: trigger re-configure on updated pythondeps 2024-08-16 14:04:19 +01:00
meson_options.txt meson: Split --enable-sanitizers to --enable-{asan, ubsan} 2024-09-11 09:49:11 +02:00
meson.build meson: Move -fsanitize=undefined into normal configuraton 2024-09-11 09:49:11 +02:00
module-common.c
os-posix.c os-posix: Expand setrlimit() syscall compatibility 2024-06-30 19:51:44 +03:00
os-win32.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-target.c exec: Expose 'target_page.h' API to user emulation 2024-04-26 15:28:11 +02:00
page-vary-common.c Remove qemu-common.h include from most units 2022-04-06 14:31:55 +02:00
page-vary-target.c exec: Rename target specific page-vary.c -> page-vary-target.c 2023-10-04 11:03:54 -07:00
pythondeps.toml python: Install pycotap in our venv if necessary 2024-09-04 10:52:29 +02:00
qemu-bridge-helper.c
qemu-edid.c qemu-edid: Restrict input parameter -d to avoid division by zero 2022-10-12 13:38:15 +02:00
qemu-img-cmds.hx docs/devel/docs: Document .hx file syntax 2024-01-15 17:12:22 +00:00
qemu-img.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-io-cmds.c qemu-io: add cvtnum() error handling for zone commands 2024-06-10 11:05:43 +02:00
qemu-io.c block: remove AioContext locking 2023-12-21 22:49:27 +01:00
qemu-keymap.c qemu-keymap: Make references to allocations static 2024-05-29 12:41:56 +02:00
qemu-nbd.c nbd/server: Plumb in new args to nbd_client_add() 2024-08-08 15:05:27 -05:00
qemu-options.hx hw/i386/pc: Ensure vmport prerequisites are fulfilled 2024-08-20 00:49:14 +02:00
qemu.nsi nsis installer: Fix mouse-over descriptions for emulators 2022-03-18 10:55:15 +00:00
qemu.sasl sasl: remove comment about obsolete kerberos versions 2021-06-14 13:28:50 +01:00
README.rst README.rst: add the missing punctuations 2024-07-17 14:04:15 +03:00
replication.c
trace-events tracepoints: move physmem trace points 2024-07-05 12:33:37 +01:00
VERSION Open 9.2 development tree 2024-09-03 09:18:43 -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>`_