OpenE2K/qemu-e2k
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Paolo Bonzini 05e514b1d4 AioContext: optimize clearing the EventNotifier 
It is pretty rare for aio_notify to actually set the EventNotifier.  It
can happen with worker threads such as thread-pool.c's, but otherwise it
should never be set thanks to the ctx->notify_me optimization.  The
previous patch, unfortunately, added an unconditional call to
event_notifier_test_and_clear; now add a userspace fast path that
avoids the call.

Note that it is not possible to do the same with event_notifier_set;
it would break, as proved (again) by the included formal model.

This patch survived over 3000 reboots on aarch64 KVM.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-id: 1437487673-23740-7-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2015-07-22 12:41:40 +01:00
audio
ossaudio: fix memory leak
2015-07-08 13:11:01 +02:00
backends
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
block
mirror: Speed up bitmap initial scanning
2015-07-22 11:14:21 +01:00
bsd-user
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
crypto
crypto: Fix aes_decrypt_wrapper()
2015-07-20 13:35:45 +02:00
default-configs
acpi: split out ICH ACPI support
2015-07-07 13:11:57 +03:00
disas
disas/arm-a64: Add missing compiler attribute GCC_FMT_ATTR
2015-07-21 11:18:45 +01:00
docs
AioContext: optimize clearing the EventNotifier
2015-07-22 12:41:40 +01:00
dtc @ 65cc4d2748
dtc: Update dtc / libfdt submodule to version 1.4.0
2015-06-03 23:56:49 +02:00
fpu
target-s390x: define default NaN values
2015-06-05 01:37:58 +02:00
fsdev
virtfs-proxy-helper: fail gracefully if socket path is too long
2015-06-16 20:32:29 +05:30
gdb-xml
gdb-xml: Include XML for s390 vector registers
2015-05-27 17:52:03 +02:00
hw
-----BEGIN PGP SIGNATURE-----
2015-07-21 10:04:32 +01:00
include
AioContext: optimize clearing the EventNotifier
2015-07-22 12:41:40 +01:00
libcacard
libcacard: pkgconfig: tidy dependent libs
2015-06-23 19:57:28 +03:00
libdecnumber
remove libdecnumber/dpd/decimal128Local.h
2015-06-23 19:57:27 +03:00
linux-headers
linux-headers: Update to 4.2-rc1
2015-07-06 17:59:01 +02:00
linux-user
linux-user: Fix MIPS N64 trap and break instruction bug
2015-07-15 14:07:25 +01:00
migration
RDMA: Fix error exits
2015-07-16 20:00:20 +02:00
net
net: Flush queued packets when guest resumes
2015-07-20 18:11:24 +01:00
pc-bios
pseries: Update SLOF firmware image to qemu-slof-20150429
2015-07-07 17:44:49 +02:00
pixman @ 87eea99e44
…
po
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qapi
migration: create migration event
2015-07-07 14:54:55 +02:00
qga
qga: added GuestPCIAddress information
2015-07-07 20:59:04 -05:00
qobject
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
qom
cpu: Convert cpu_index into a bitmap
2015-07-09 15:20:40 +02:00
roms
pseries: Update SLOF firmware image to qemu-slof-20150429
2015-07-07 17:44:49 +02:00
scripts
virtio-input: move sys/ioctl.h include
2015-07-16 17:34:41 +02:00
slirp
qerror: Move #include out of qerror.h
2015-06-22 18:20:40 +02:00
stubs
main-loop: introduce qemu_mutex_iothread_locked
2015-07-01 15:45:50 +02:00
target-alpha
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-arm
target-arm: kvm: Differentiate registers based on write-back levels
2015-07-21 11:18:45 +01:00
target-cris
disas: cris: QOMify target specific disas setup
2015-07-09 15:20:41 +02:00
target-i386
target-i386: emulate CPUID level of real hardware
2015-07-15 17:05:59 -03:00
target-lm32
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-m68k
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-microblaze
disas: microblaze: QOMify target specific disas setup
2015-07-09 15:20:41 +02:00
target-mips
mips/kvm: Sign extend registers written to KVM
2015-07-16 20:00:20 +02:00
target-moxie
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-openrisc
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-ppc
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-s390x
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-sh4
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-sparc
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-tricore
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-unicore32
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
target-xtensa
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
tcg
tci: Fix regression with INDEX_op_qemu_st_i32, INDEX_op_qemu_st_i64
2015-07-13 10:07:38 +01:00
tests
AioContext: fix broken ctx->dispatching optimization
2015-07-22 12:41:40 +01:00
trace
…
ui
vnc: fix vnc client authentication
2015-07-14 15:33:48 +02:00
util
timer: rename NSEC_PER_SEC due to Mac OS X header clash
2015-07-20 17:01:00 +01:00
.exrc
…
.gitignore
…
.gitmodules
…
.mailmap
…
.travis.yml
…
accel.c
…
aio-posix.c
AioContext: optimize clearing the EventNotifier
2015-07-22 12:41:40 +01:00
aio-win32.c
AioContext: optimize clearing the EventNotifier
2015-07-22 12:41:40 +01:00
arch_init.c
migration: reduce include files
2015-06-12 06:42:34 +02:00
async.c
AioContext: optimize clearing the EventNotifier
2015-07-22 12:41:40 +01:00
balloon.c
Include monitor/monitor.h exactly where needed
2015-06-22 18:20:41 +02:00
block.c
block: Fix backing file child when modifying graph
2015-07-14 17:15:23 +02:00
blockdev-nbd.c
Include monitor/monitor.h exactly where needed
2015-06-22 18:20:41 +02:00
blockdev.c
mirror: correct buf_size
2015-07-14 21:50:13 -04:00
blockjob.c
blockjob: add block_job_release function
2015-07-07 14:27:14 +01:00
bootdevice.c
…
bt-host.c
…
bt-vhci.c
…
Changelog
…
CODING_STYLE
…
configure
crypto: fix build with nettle >= 3.0.0
2015-07-16 20:00:20 +02:00
COPYING
…
COPYING.LIB
…
coroutine-gthread.c
…
coroutine-sigaltstack.c
…
coroutine-ucontext.c
…
coroutine-win32.c
…
cpu-exec.c
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
cpus.c
cpu-exec: Purge all uses of ENV_GET_CPU()
2015-07-09 15:20:40 +02:00
cputlb.c
memory: replace cpu_physical_memory_reset_dirty() with test-and-clear
2015-06-05 17:10:00 +02:00
device_tree.c
device-tree: Make a common-obj
2015-06-03 14:21:24 +03:00
device-hotplug.c
…
disas.c
disas: cris: QOMify target specific disas setup
2015-07-09 15:20:41 +02:00
dma-helpers.c
…
dump.c
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
exec.c
cpu: Change cpu_exec_init() arg to cpu, not env
2015-07-09 15:20:40 +02:00
gdbstub.c
gdbstub: Use cpu_set_pc() helper
2015-07-09 15:20:40 +02:00
HACKING
…
hmp-commands.hx
qmp/hmp: add rocker device support
2015-06-12 13:42:17 +01:00
hmp.c
qmp: Add optional bool "unmap" to drive-mirror
2015-07-02 10:06:23 +01:00
hmp.h
qmp/hmp: add rocker device support
2015-06-12 13:42:17 +01:00
iohandler.c
iohandler: Change return type of qemu_set_fd_handler to "void"
2015-06-12 13:26:21 +01:00
ioport.c
…
iothread.c
qom: Add helper function for getting user objects root
2015-06-19 18:40:00 +02:00
kvm-all.c
VFIO updates for 2.4-rc0
2015-07-07 09:22:40 +01:00
kvm-stub.c
kvm: some fixes to kvm_resamplefds_allowed
2015-07-06 12:15:14 -06:00
LICENSE
…
main-loop.c
Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler
2015-06-12 13:26:21 +01:00
MAINTAINERS
MAINTAINERS: update email address
2015-07-14 17:15:23 +02:00
Makefile
Makefile: Add "make ctags"
2015-06-23 20:23:39 +03:00
Makefile.objs
crypto: introduce new module for computing hash digests
2015-07-07 12:04:07 +02:00
Makefile.target
migration: move savevm.c inside migration/
2015-06-12 06:42:30 +02:00
memory_mapping.c
memory_mapping: Rework cpu related includes
2015-06-26 16:00:50 +02:00
memory.c
memory: fix refcount leak in memory_region_present
2015-07-16 20:00:20 +02:00
module-common.c
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monitor.c
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
nbd.c
…
numa.c
numa: Fix memory leak in numa_set_mem_node_id()
2015-07-15 16:57:50 -03:00
os-posix.c
…
os-win32.c
…
page_cache.c
…
qapi-schema.json
Revert "vhost-user: add multi queue support"
2015-07-20 14:19:40 +03:00
qdev-monitor.c
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
qdict-test-data.txt
…
qemu-bridge-helper.c
…
qemu-char.c
qerror: Move #include out of qerror.h
2015-06-22 18:20:40 +02:00
qemu-coroutine-io.c
…
qemu-coroutine-lock.c
…
qemu-coroutine-sleep.c
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qemu-coroutine.c
…
qemu-doc.texi
…
qemu-img-cmds.hx
…
qemu-img.c
Include qapi/qmp/qerror.h exactly where needed
2015-06-22 18:20:41 +02:00
qemu-img.texi
…
qemu-io-cmds.c
qerror: Move #include out of qerror.h
2015-06-22 18:20:40 +02:00
qemu-io.c
qerror: Move #include out of qerror.h
2015-06-22 18:20:40 +02:00
qemu-log.c
…
qemu-nbd.c
qerror: Move #include out of qerror.h
2015-06-22 18:20:40 +02:00
qemu-nbd.texi
…
qemu-options-wrapper.h
…
qemu-options.h
…
qemu-options.hx
Revert "vhost-user: add multi queue support"
2015-07-20 14:19:40 +03:00
qemu-seccomp.c
…
qemu-tech.texi
…
qemu-timer.c
qemu-timer: initialize "timers_done_ev" to set
2015-07-22 12:41:32 +01:00
qemu.nsi
…
qemu.sasl
…
qjson.c
…
qmp-commands.hx
migration: Write documetation for events capabilites
2015-07-15 09:07:54 +02:00
qmp.c
Include monitor/monitor.h exactly where needed
2015-06-22 18:20:41 +02:00
qtest.c
qtest: pre-buffer hex nibs
2015-05-22 15:58:22 -04:00
README
…
rules.mak
…
softmmu_template.h
softmmu: Add probe_write()
2015-06-11 10:13:28 +01:00
spice-qemu-char.c
spice: fix spice_chr_add_watch() pre-condition
2015-05-29 09:56:01 +02:00
tcg-runtime.c
…
tci.c
tcg: Mask TCGMemOp appropriately for indexing
2015-06-09 06:35:29 -07:00
thread-pool.c
…
thunk.c
linux-user: Allocate thunk size dynamically
2015-06-15 11:36:58 +03:00
tpm.c
Include monitor/monitor.h exactly where needed
2015-06-22 18:20:41 +02:00
trace-events
vmstate: Create optional sections
2015-07-07 14:54:52 +02:00
translate-all.c
translate-all: Change tb_flush() env argument to cpu
2015-07-09 15:20:40 +02:00
translate-all.h
translate-all: remove unnecessary argument to tb_invalidate_phys_range
2015-06-05 17:09:59 +02:00
user-exec.c
exec: move functions to translate-all.h
2015-06-05 17:09:59 +02:00
VERSION
Update version for v2.4.0-rc1 release
2015-07-16 20:32:20 +01:00
version.rc
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vl.c
migration: Register global state section before loadvm
2015-07-15 09:07:54 +02:00
xen-common-stub.c
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xen-common.c
…
xen-hvm-stub.c
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xen-hvm.c
xen-220615, more SOB lines
2015-06-23 17:46:20 +01:00
xen-mapcache.c
…

README 

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

- QEMU team
Description
QEMU With E2K User Support
Readme 459 MiB
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