QEMU With E2K User Support
Go to file
Paolo Bonzini ca6155c0f2 Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD
This series removes ad hoc RAM allocation API (memory_region_allocate_system_memory)
and consolidates it around hostmem backend. It allows to

* resolve conflicts between global -mem-prealloc and hostmem's "policy" option,
  fixing premature allocation before binding policy is applied

* simplify complicated memory allocation routines which had to deal with 2 ways
  to allocate RAM.

* reuse hostmem backends of a choice for main RAM without adding extra CLI
  options to duplicate hostmem features.  A recent case was -mem-shared, to
  enable vhost-user on targets that don't support hostmem backends [1] (ex: s390)

* move RAM allocation from individual boards into generic machine code and
  provide them with prepared MemoryRegion.

* clean up deprecated NUMA features which were tied to the old API (see patches)
  - "numa: remove deprecated -mem-path fallback to anonymous RAM"
  - (POSTPONED, waiting on libvirt side) "forbid '-numa node,mem' for 5.0 and newer machine types"
  - (POSTPONED) "numa: remove deprecated implicit RAM distribution between nodes"

Introduce a new machine.memory-backend property and wrapper code that aliases
global -mem-path and -mem-alloc into automatically created hostmem backend
properties (provided memory-backend was not set explicitly given by user).
A bulk of trivial patches then follow to incrementally convert individual
boards to using machine.memory-backend provided MemoryRegion.

Board conversion typically involves:

* providing MachineClass::default_ram_size and MachineClass::default_ram_id
  so generic code could create default backend if user didn't explicitly provide
  memory-backend or -m options

* dropping memory_region_allocate_system_memory() call

* using convenience MachineState::ram MemoryRegion, which points to MemoryRegion
   allocated by ram-memdev

On top of that for some boards:

* missing ram_size checks are added (typically it were boards with fixed ram size)

* ram_size fixups are replaced by checks and hard errors, forcing user to
  provide correct "-m" values instead of ignoring it and continuing running.

After all boards are converted, the old API is removed and memory allocation
routines are cleaned up.
2020-02-25 09:19:00 +01:00
.gitlab-ci.d/edk2 gitlab-ci.yml: Add jobs to build EDK2 firmware binaries 2020-01-21 14:15:48 +01:00
accel accel/kvm: Check ioctl(KVM_SET_USER_MEMORY_REGION) return value 2020-02-25 09:18:01 +01:00
audio audio/alsaaudio: Remove superfluous semicolons 2020-02-18 20:20:49 +01:00
authz authz: fix usage of bool in listfile.c 2020-02-07 12:22:19 +00:00
backends hostmem: fix strict bind policy 2020-02-19 16:50:02 +00:00
block block: Fix VM size field width in snapshot dump 2020-02-20 16:43:42 +01:00
bsd-user build: move TARGET_GPROF to config-host.mak 2020-02-12 16:29:27 +01:00
capstone@22ead3e0bf
chardev qemu/queue.h: add QLIST_SAFE_REMOVE() 2020-02-22 08:26:47 +00:00
contrib contrib/rdmacm-mux: Remove superfluous semicolon 2020-02-18 20:20:49 +01:00
crypto * More uses of RCU_READ_LOCK_GUARD (Dave, myself) 2019-12-20 11:20:25 +00:00
default-configs spapr: Add NVDIMM device support 2020-02-21 09:15:04 +11:00
disas target/mips: Add implementation of GINVT instruction 2020-01-29 19:28:52 +01:00
docs fuzz: add documentation to docs/devel/ 2020-02-22 08:26:48 +00:00
dtc@88f18909db
dump hmp: drop Error pointer indirection in hmp_handle_error 2019-12-18 08:36:16 +01:00
fpu softfp: Added hardfloat conversion from float32 to float64 2019-10-30 19:03:37 +01:00
fsdev virtfs-proxy-helper: Convert documentation to rST 2020-02-03 11:02:23 +00:00
gdb-xml target/riscv: Expose "priv" register for GDB for reads 2019-10-28 07:47:29 -07:00
hw Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
include Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
io io/channel-websock: treat 'binary' and no sub-protocol as the same 2020-02-07 12:22:18 +00:00
libdecnumber
linux-headers linux-headers: Update 2020-01-08 11:01:59 +11:00
linux-user target/arm: Add _aa32_ to isar_feature functions testing 32-bit ID registers 2020-02-21 16:07:00 +00:00
migration migration/rdma: rdma_accept_incoming_migration fix error handling 2020-02-13 10:55:55 +01:00
monitor qapi: Allow getting flat output from 'query-named-block-nodes' 2020-02-20 16:43:42 +01:00
nbd nbd: fix uninitialized variable warning 2020-01-08 16:08:17 +01:00
net chardev: Use QEMUChrEvent enum in IOEventHandler typedef 2020-01-08 11:15:35 +01:00
pc-bios hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS 2020-02-02 14:07:57 +11:00
plugins plugins: Include trace/mem.h in api.c 2020-01-15 15:13:09 -10:00
po ui/gtk: fix gettext message's charset. 2019-11-21 09:42:30 +01:00
python/qemu python/qemu/machine: Allow to use other serial consoles than default 2020-02-07 15:12:48 +01:00
qapi qapi: Allow getting flat output from 'query-named-block-nodes' 2020-02-20 16:43:42 +01:00
qga qga/qapi-schema.json: minor format fixups for rST 2020-02-15 11:41:49 +01:00
qobject qstring: add qstring_free() 2020-01-24 20:59:13 +01:00
qom qapi/qmp: add ObjectPropertyInfo.default-value 2020-01-24 20:59:16 +01:00
replay replay: record and replay random number sources 2020-01-07 12:08:39 +01:00
roms hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS 2020-02-02 14:07:57 +11:00
scripts softmmu: move vl.c to softmmu/ 2020-02-22 08:26:47 +00:00
scsi build: rename CONFIG_LIBCAP to CONFIG_LIBCAP_NG 2019-12-17 19:35:47 +01:00
slirp@126c04acba
softmmu Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
stubs stubs: add stubs for io_uring interface 2020-01-30 20:59:41 +00:00
target target/i386: check for empty register in FXAM 2020-02-25 09:18:01 +01:00
tcg tcg: Add tcg_gen_gvec_5_ptr 2020-02-12 14:58:36 -08:00
tests Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
tools/virtiofsd virtiofsd: Remove fuse.h and struct fuse_module 2020-02-21 12:53:17 +00:00
trace qemu_set_log_filename: filename argument may be NULL 2020-01-30 21:33:50 +00:00
ui ui/input-barrier: Remove superfluous semicolon 2020-02-18 20:20:49 +01:00
util mem-prealloc: optimize large guest startup 2020-02-25 09:18:01 +01:00
.cirrus.yml ci: build out-of-tree 2019-12-18 20:17:55 +00:00
.dir-locals.el
.editorconfig
.exrc
.gdbinit
.gitignore virtiofsd: add vhost-user.json file 2020-01-23 16:41:36 +00:00
.gitlab-ci-edk2.yml gitlab-ci.yml: Add jobs to build EDK2 firmware binaries 2020-01-21 14:15:48 +01:00
.gitlab-ci.yml gitlab-ci: Refresh the list of iotests 2020-02-04 09:00:57 +01:00
.gitmodules hw/ppc/prep: Remove the deprecated "prep" machine and the OpenHackware BIOS 2020-02-02 14:07:57 +11:00
.gitpublish
.mailmap mailmap: Add entry for Yu-Chen Lin 2020-02-18 20:20:49 +01:00
.patchew.yml
.readthedocs.yml .readthedocs.yml: specify some minimum python requirements 2020-02-07 15:15:16 +01:00
.shippable.yml .shippable: --disable-docs for cross-compile tests 2020-02-04 17:13:29 +00:00
.travis.yml tests/acceptance: Add boot tests for some of the QEMU advent calendar images 2020-02-07 15:12:48 +01:00
arch_init.c hw/m68k: add Nubus macfb video card 2019-10-28 19:06:49 +01:00
balloon.c
block.c qemu/queue.h: add QLIST_SAFE_REMOVE() 2020-02-22 08:26:47 +00:00
blockdev-nbd.c nbd: Allow description when creating NBD blockdev 2020-02-05 17:22:13 -06:00
blockdev.c qapi: Allow getting flat output from 'query-named-block-nodes' 2020-02-20 16:43:42 +01:00
blockjob.c blockjob: Fix error message for negative speed 2019-12-18 11:21:07 +01:00
bootdevice.c bootdevice: FW_CFG interface for LCHS values 2019-10-31 11:47:38 -04:00
Changelog
CODING_STYLE.rst
configure fuzz: add configure flag --enable-fuzzing 2020-02-22 08:26:48 +00:00
COPYING
COPYING.LIB
cpus-common.c cpu: introduce cpu_in_exclusive_context() 2019-10-28 15:12:38 +00:00
cpus.c Wrapper function to wait on condition for the main loop mutex 2020-02-03 11:33:10 +11:00
device_tree.c
device-hotplug.c
disas.c plugin: add qemu_plugin_insn_disas helper 2019-10-28 15:12:38 +00:00
dma-helpers.c
exec-vary.c
exec.c Merge tag 'patchew/20200219160953.13771-1-imammedo@redhat.com' of https://github.com/patchew-project/qemu into HEAD 2020-02-25 09:19:00 +01:00
gdbstub.c chardev: Use QEMUChrEvent enum in IOEventHandler typedef 2020-01-08 11:15:35 +01:00
gitdm.config
hmp-commands-info.hx
hmp-commands.hx hmp: Allow using qdev ID for qemu-io command 2019-12-19 18:04:25 +01:00
ioport.c
iothread.c
job-qmp.c
job.c
Kconfig.host configure: simplify vhost condition with Kconfig 2019-12-17 19:32:48 +01:00
LICENSE tcg/LICENSE: Remove out of date claim about TCG subdirectory licensing 2019-11-11 15:11:21 +01:00
MAINTAINERS WHPX: Assigning maintainer for Windows Hypervisor Platform 2020-02-25 09:18:01 +01:00
Makefile Pull request 2020-02-24 11:38:54 +00:00
Makefile.objs softmmu: move vl.c to softmmu/ 2020-02-22 08:26:47 +00:00
Makefile.target fuzz: add target/fuzz makefile rules 2020-02-22 08:26:48 +00:00
memory_ldst.inc.c
memory_mapping.c
memory.c memory: batch allocate ioeventfds[] in address_space_update_ioeventfds() 2020-02-25 09:18:01 +01:00
module-common.c
os-posix.c os-posix: simplify os_find_datadir 2019-12-17 19:32:47 +01:00
os-win32.c glib: use portable g_setenv() 2019-12-17 09:05:23 +01:00
qdev-monitor.c qdev-monitor: Forbid repeated device_del 2020-02-25 09:18:01 +01:00
qemu-bridge-helper.c build: rename CONFIG_LIBCAP to CONFIG_LIBCAP_NG 2019-12-17 19:35:47 +01:00
qemu-deprecated.texi numa: remove deprecated -mem-path fallback to anonymous RAM 2020-02-19 16:49:53 +00:00
qemu-doc.texi qemu-doc: Clarify extent of build platform support 2020-02-17 13:53:47 +01:00
qemu-edid.c
qemu-img-cmds.hx qemu-img: Add --target-is-zero to convert 2020-02-20 16:43:42 +01:00
qemu-img.c qemu-img: Fix convert -n -B for backing-less targets 2020-02-20 16:43:42 +01:00
qemu-io-cmds.c
qemu-io.c qemu-io: adds option to use aio engine 2020-01-30 20:59:42 +00:00
qemu-keymap.c
qemu-nbd.c qemu-nbd: Removed deprecated --partition option 2020-02-05 17:29:49 -06:00
qemu-option-trace.texi qemu-nbd: Convert invocation documentation to rST 2020-01-23 15:22:39 +00:00
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx docs: stop documenting the e1000 NIC model as the default 2020-02-07 12:22:19 +00:00
qemu-seccomp.c
qemu-tech.texi
qemu.nsi
qemu.sasl
qtest.c qtest: add in-process incoming command handler 2020-02-22 08:26:48 +00:00
README.rst
replication.c
replication.h
rules.mak Makefile: Ensure we don't run Sphinx in parallel for manpages 2020-02-03 10:46:32 +00:00
thunk.c
tpm.c
trace-events trace: add mmu_index to mem_info 2019-10-28 15:12:38 +00:00
VERSION Open 5.0 development tree 2019-12-13 11:59:06 +00:00
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.


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>`_


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>`_