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QEMU With E2K User Support
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Stefan Hajnoczi 02ffb50448 coroutine: stop using AioContext in CoQueue 
qemu_co_queue_next(&queue) arranges that the next queued coroutine is
run at a later point in time.  This deferred restart is useful because
the caller may not want to transfer control yet.

This behavior was implemented using QEMUBH in the past, which meant that
CoQueue (and hence CoMutex and CoRwlock) had a dependency on the
AioContext event loop.  This hidden dependency causes trouble when we
move to a world with multiple event loops - now qemu_co_queue_next()
needs to know which event loop to schedule the QEMUBH in.

After pondering how to stash AioContext I realized the best solution is
to not use AioContext at all.  This patch implements the deferred
restart behavior purely in terms of coroutines and no longer uses
QEMUBH.

Here is how it works:

Each Coroutine has a wakeup queue that starts out empty.  When
qemu_co_queue_next() is called, the next coroutine is added to our
wakeup queue.  The wakeup queue is processed when we yield or terminate.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
 		2013-05-24 16:17:56 +02:00
QMP qmp: fix handling of cmd with Equals in qmp-shell 2013-05-15 08:58:43 -04:00
audio remove some double-includes 2013-05-18 16:35:12 +04:00
backends rng random backend: check for -EAGAIN errors on read 2013-04-16 16:10:21 -05:00
block Remove twice include of qemu-common.h 2013-05-18 16:35:11 +04:00
bsd-user bsd-user: OS-agnostic 64-bit SYSCTL types 2013-05-12 13:25:55 +04:00
default-configs audio: Enable all cards 2013-05-03 12:04:49 -05:00
disas tcg-arm: Implement division instructions 2013-04-27 02:16:44 +02:00
docs docs: mention AddressSpaces in docs/memory.txt 2013-05-12 13:25:55 +04:00
dtc@bc895d6d09 dtc: add submodule 2013-04-18 13:50:53 +02:00
fpu fpu: Correct edgecase in float64_muladd 2013-04-15 16:06:15 +02:00
fsdev remove double semicolons 2013-05-12 13:25:55 +04:00
gdb-xml gdb-xml: fix hacks in powerpc register numbering 2009-07-12 23:42:05 +02:00
hw Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-05-22 08:22:36 -05:00
include coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
ldscripts build: create ldscripts/ 2012-12-19 08:29:06 +01:00
libcacard libcacard/cac: change big switch functions to single return point 2013-04-24 11:48:06 +03:00
linux-headers linux-headers: Update to kvm/queue 2013-04-26 23:02:40 +02:00
linux-user Merge remote-tracking branch 'mjt/trivial-patches' into staging 2013-05-22 08:22:36 -05:00
net tap: properly initialize vhostfds 2013-05-03 13:53:46 +02:00
pc-bios Merge branch 's390-for-upstream' of git://github.com/agraf/qemu 2013-05-06 19:56:27 +02:00
pixman@97336fad32 qapi: move include files to include/qobject/ 2012-12-19 08:31:31 +01:00
po de_DE.po: Add missing leading spaces 2013-05-08 15:28:49 +02:00
qapi qapi: Fix unchecked strdup() by converting to g_strdup() 2013-01-30 11:14:46 +01:00
qga Merge remote-tracking branch 'mdroth/qga-pull-2013-05-13' into staging 2013-05-17 10:00:30 -05:00
qobject json-parser: fix handling of large whole number values 2013-05-23 09:44:20 -04:00
qom qom/object: Don't poll cast cache for NULL objects 2013-05-22 07:40:09 -05:00
roms pseries: Update SLOF firmware image 2013-05-06 17:22:48 +02:00
scripts qapi: qapi-visit.py, native list support 2013-05-23 09:44:20 -04:00
slirp remove some double-includes 2013-05-18 16:35:12 +04:00
stubs cpu: Introduce cpu_resume(), for single CPU 2013-05-01 13:04:17 +02:00
sysconfigs/target Eliminate cpus-x86_64.conf file 2012-09-21 15:12:58 +02:00
target-alpha cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-arm target-arm: Fix incorrect check of kvm_vcpu_ioctl return value 2013-05-03 18:47:22 +01:00
target-cris target-cris: Override do_interrupt for pre-v32 CPU cores 2013-04-16 02:45:11 +02:00
target-i386 target-i386: ROR r8/r16 imm instruction fix 2013-05-10 19:59:54 +02:00
target-lm32 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-m68k cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-microblaze microblaze: Add internal base vectors reg 2013-04-26 11:28:50 +02:00
target-mips linux-user: Save the correct resume address for MIPS signal handling 2013-05-20 18:16:17 +02:00
target-moxie target-moxie: replace target_phys_addr_t with hwaddr 2013-05-18 16:35:12 +04:00
target-openrisc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-ppc remove some double-includes 2013-05-18 16:35:12 +04:00
target-s390x osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
target-sh4 hw: move headers to include/ 2013-04-08 18:13:10 +02:00
target-sparc cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-unicore32 cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
target-xtensa cpu: Replace do_interrupt() by CPUClass::do_interrupt method 2013-03-12 10:35:55 +01:00
tcg tcg/optimize: fix setcond2 optimization 2013-05-09 16:14:58 +02:00
tests qemu-iotests: Try creating huge qcow2 image 2013-05-24 16:17:55 +02:00
trace trace: Add ftrace tracing backend 2013-05-03 13:58:09 +02:00
ui ui/input.c: replace magic numbers with macros 2013-05-23 09:58:45 -04:00
util Rename hexdump to avoid FreeBSD libutil conflict 2013-05-20 08:20:08 -05:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore S390: ccw firmware: Add Makefile 2013-04-26 20:18:24 +02:00
.gitmodules dtc: add submodule 2013-04-18 13:50:53 +02:00
.mailmap Add a .mailmap to map pre-git-conversion authors to friendly names 2011-12-12 17:06:21 -06:00
CODING_STYLE Replace Qemu by QEMU in internal documentation 2012-04-07 13:58:25 +00:00
COPYING COPYING: update from FSF 2008-10-12 17:54:42 +00:00
COPYING.LIB Update FSF address in GPL/LGPL boilerplate 2009-01-04 22:05:52 +00:00
Changelog fix some common typos 2012-05-14 07:27:24 +02:00
HACKING osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
LICENSE LICENSE: There is no libqemu.a anymore 2011-12-09 11:25:22 +00:00
MAINTAINERS target-i386: Introduce ICC bus/device/bridge 2013-05-01 13:06:06 +02:00
Makefile qapi: enable generation of native list code 2013-05-23 09:44:20 -04:00
Makefile.objs target-i386: Add "feature-words" property to X86CPU 2013-05-06 19:16:05 +02:00
Makefile.target cpu: Make kvm-stub.o available outside softmmu 2013-05-01 13:04:17 +02:00
README Update README 2011-12-11 17:50:43 -06:00
VERSION Open up 1.6 development 2013-05-20 10:55:18 -05:00
aio-posix.c aio: support G_IO_HUP and G_IO_ERR 2013-02-21 16:17:31 -06:00
aio-win32.c aio: Fix return value of aio_poll() 2013-01-17 10:51:42 +01:00
arch_init.c audio: look for the ISA and PCI buses 2013-04-29 12:16:57 -05:00
async.c aio: add a ThreadPool instance to AioContext 2013-03-15 16:07:50 +01:00
balloon.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
block-migration.c migration: run setup callbacks out of big lock 2013-03-11 13:32:01 +01:00
block.c block: Add hint to -EFBIG error message 2013-05-14 16:44:33 +02:00
blockdev-nbd.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
blockdev.c blockdev: Rename BlockdevAction -> TransactionAction 2013-05-24 16:17:55 +02:00
blockjob.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
cmd.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
cmd.h Delete useless 'extern' qualifiers for functions 2011-01-23 16:21:20 +00:00
configure w32: Fix configure test for -march=i486 2013-05-15 08:49:28 -05:00
coroutine-gthread.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
coroutine-sigaltstack.c Merge remote-tracking branch 'kwolf/for-anthony' into staging 2013-02-26 07:44:39 -06:00
coroutine-ucontext.c Fix warnings suppressors to honor --disable-werror 2013-04-17 10:28:04 -05:00
coroutine-win32.c block: move include files to include/block/ 2012-12-19 08:31:31 +01:00
cpu-exec.c Merge branch 'mingw' of git://qemu.weilnetz.de/qemu 2013-04-13 14:31:54 +02:00
cpus.c cpus: Fix pausing TCG CPUs while in vCPU thread 2013-05-02 12:15:38 +02:00
cputlb.c cpu: Move current_tb field to CPUState 2013-02-16 14:51:00 +01:00
device-hotplug.c hw: move device-hotplug.o to toplevel, compile it once 2013-03-01 13:57:13 +01:00
device_tree.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
disas.c disas: Disassemble all ppc insns for the guest 2013-04-26 23:02:42 +02:00
dma-helpers.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
dump-stub.c cpu: Move cpu_write_elfXX_note() functions to CPUState 2013-05-01 13:04:19 +02:00
dump.c cpu: Move cpu_write_elfXX_note() functions to CPUState 2013-05-01 13:04:19 +02:00
exec.c osdep: introduce qemu_anon_ram_free to free qemu_anon_ram_alloc-ed memory 2013-05-14 08:53:31 -05:00
gdbstub.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
hmp-commands.hx audio: remove HAS_AUDIO 2013-04-29 12:16:36 -05:00
hmp.c Merge remote-tracking branch 'bonzini/hw-dirs' into staging 2013-04-15 17:06:04 -05:00
hmp.h Revert "New QMP command query-cpu-max and HMP command cpu_max" 2013-04-12 09:41:54 -04:00
iohandler.c iohandler: switch to GPollFD 2013-02-21 16:17:31 -06:00
ioport.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
kvm-all.c osdep, kvm: rename low-level RAM allocation functions 2013-05-14 08:53:31 -05:00
kvm-stub.c cpu: Call cpu_synchronize_post_init() from DeviceClass::realize() 2013-05-01 13:04:17 +02:00
main-loop.c main-loop: partial revert of 5e3bc73 2013-05-16 14:18:47 -05:00
memory.c memory: fix a bug of detection of memory region collision 2013-03-22 13:21:28 +01:00
memory_mapping-stub.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
memory_mapping.c exec: change RAM list to a TAILQ 2012-12-20 23:08:47 +01:00
migration-exec.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-fd.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-tcp.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration-unix.c migration: eliminate s->migration_file 2013-03-11 13:32:03 +01:00
migration.c Revert "migration: don't account sleep time for calculating bandwidth" 2013-05-17 09:58:57 -05:00
monitor.c remove some double-includes 2013-05-18 16:35:12 +04:00
nbd.c nbd: support large NBD requests 2013-05-03 13:05:49 +02:00
os-posix.c Add option to mlock qemu and guest memory 2013-04-22 08:52:23 -05:00
os-win32.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
page_cache.c remove some double-includes 2013-05-18 16:35:12 +04:00
qapi-schema-test.json qapi: add native list coverage for QMP output visitor tests 2013-05-23 09:44:21 -04:00
qapi-schema.json blockdev: Rename BlockdevAction -> TransactionAction 2013-05-24 16:17:55 +02:00
qdev-monitor.c qdev: Let qdev_prop_parse() pass through Error 2013-05-06 19:40:44 +02:00
qdict-test-data.txt Introduce QDict test data file 2009-09-04 09:37:34 -05:00
qemu-bridge-helper.c qemu-bridge-helper: force usage of a very high MAC address for the bridge 2013-03-28 12:58:52 -05:00
qemu-char.c chardev: Get filename for new qapi backend 2013-05-22 07:40:10 -05:00
qemu-coroutine-io.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine-lock.c coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
qemu-coroutine-sleep.c misc: move include files to include/qemu/ 2012-12-19 08:32:39 +01:00
qemu-coroutine.c coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
qemu-doc.texi audio: update documentation after removing --audio-card-list option 2013-05-12 13:25:55 +04:00
qemu-img-cmds.hx qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-img.c qemu-img: do not zero-pad the compressed write buffer 2013-04-22 10:27:58 +02:00
qemu-img.texi qemu-img: Add compare subcommand 2013-02-22 21:21:10 +01:00
qemu-io.c qemu-io: Fix 'map' output 2013-05-24 16:17:55 +02:00
qemu-log.c qemu-log: default to stderr for logging output 2013-02-26 13:31:47 -06:00
qemu-nbd.c Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-nbd.texi Add -f FMT / --format FMT arg to qemu-nbd 2013-04-15 14:29:20 -05:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h vl.c: Move option generation logic into a wrapper file 2011-12-19 10:27:33 -06:00
qemu-options.hx monitor: allow to disable the default monitor 2013-05-23 09:58:45 -04:00
qemu-seccomp.c softmmu: move include files to include/sysemu/ 2012-12-19 08:32:45 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c qemu-timer: move timeBeginPeriod/timeEndPeriod to os-win32 2013-04-12 18:27:16 +02:00
qemu.sasl Add SASL authentication support ("Daniel P. Berrange") 2009-03-06 20:27:28 +00:00
qmp-commands.hx Merge remote-tracking branch 'afaerber/qom-cpu' into staging 2013-05-02 10:57:01 -05:00
qmp.c QMP: Add cpu-add command 2013-05-01 13:06:07 +02:00
qtest.c qtest: Handle addresses and values for {in, out}[bwl] as unsigned 2013-04-22 09:11:50 -05:00
readline.c readline: Handle xterm escape sequences for Home/End keys 2013-05-14 08:53:22 -05:00
rules.mak win32: fix compilation again 2013-05-03 12:04:40 -05:00
savevm.c qemu-file: do not use stdio for qemu_fdopen 2013-04-17 11:44:22 +02:00
spice-qemu-char.c spice-qemu-char: vmc_write: Don't write more bytes then we're asked too 2013-04-16 11:52:09 +02:00
tcg-runtime.c tcg: Implement multiword multiply helpers 2013-02-23 17:25:28 +00:00
tci.c tci: Make tcg temporaries local to tcg_qemu_tb_exec 2013-04-11 19:58:21 +02:00
thread-pool.c threadpool: drop global thread pool 2013-03-15 16:07:51 +01:00
thunk.c exec: move include files to include/exec/ 2012-12-19 08:31:31 +01:00
tpm.c Move TPM passthrough specific command line options to backend structure 2013-04-23 10:40:40 -05:00
trace-events coroutine: stop using AioContext in CoQueue 2013-05-24 16:17:56 +02:00
translate-all.c translate: remove redundantly included qemu/timer.h 2013-05-18 16:35:12 +04:00
translate-all.h cputlb: Pass CPUState to cpu_unlink_tb() 2013-02-16 14:51:00 +01:00
user-exec.c Replace all setjmp()/longjmp() with sigsetjmp()/siglongjmp() 2013-02-23 16:11:19 +00:00
version.rc mingw: add version information to the executables 2010-09-26 16:07:57 +00:00
vl.c monitor: allow to disable the default monitor 2013-05-23 09:58:45 -04:00
xbzrle.c Move XBZRLE encoding code to a separate file to allow testing 2013-02-01 08:32:20 +01:00
xen-all.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
xen-mapcache.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00
xen-stub.c hw: move headers to include/ 2013-04-08 18:13:10 +02:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu.org

- QEMU team