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QEMU With E2K User Support
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95f7142abc
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Peter Lieven 95f7142abc virtio-blk: introduce multiread 
this patch finally introduces multiread support to virtio-blk. While
multiwrite support was there for a long time, read support was missing.

The complete merge logic is moved into virtio-blk.c which has
been the only user of request merging ever since. This is required
to be able to merge chunks of requests and immediately invoke callbacks
for those requests. Secondly, this is required to switch to
direct invocation of coroutines which is planned at a later stage.

The following benchmarks show the performance of running fio with
4 worker threads on a local ram disk. The numbers show the average
of 10 test runs after 1 run as warmup phase.

              |        4k        |       64k        |        4k
MB/s          | rd seq | rd rand | rd seq | rd rand | wr seq | wr rand
--------------+--------+---------+--------+---------+--------+--------
master        | 1221   | 1187    | 4178   | 4114    | 1745   | 1213
multiread     | 1829   | 1189    | 4639   | 4110    | 1894   | 1216

Signed-off-by: Peter Lieven <pl@kamp.de>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2015-02-06 17:24:21 +01:00
audio audio: Don't free hw resources until after hw backend is stopped 2014-12-22 23:12:25 +00:00
backends Drop superfluous conditionals around g_strdup() 2014-12-10 11:30:55 +03:00
block block-backend: expose bs->bl.max_transfer_length 2015-02-06 17:24:21 +01:00
bsd-user bsd-user/elfload.c: Don't use ldl() or ldq_raw() 2015-01-20 15:19:33 +00:00
default-configs hw: misc, add educational driver 2015-01-26 12:26:55 +01:00
disas disas/arm-a64.cc: Tell libvixl correct code addresses 2015-02-05 13:37:25 +00:00
docs rcu: add call_rcu 2015-02-02 16:55:10 +01:00
dtc@bc895d6d09
fpu softfloat: Clarify license status 2015-01-29 16:45:45 +00:00
fsdev
gdb-xml s390x/gdb: add the feature xml files for s390x 2014-09-01 09:45:19 +02:00
hw virtio-blk: introduce multiread 2015-02-06 17:24:21 +01:00
include virtio-blk: introduce multiread 2015-02-06 17:24:21 +01:00
libcacard libcacard: fix resource leak 2014-11-14 12:15:40 +01:00
libdecnumber libdecnumber: Fix warnings from smatch (missing static, boolean operations) 2014-08-24 13:21:06 +04:00
linux-headers linux-headers: update to 3.18-rc5 2014-11-18 11:24:31 +00:00
linux-user linux-user: support target-to-host SCM_CREDENTIALS 2015-01-27 22:33:57 +02:00
migration Tracify migration/rdma.c 2015-02-05 17:16:14 +01:00
net net: del hub port when peer is deleted 2015-02-06 14:06:44 +00:00
pc-bios pc-bios/s390-ccw: update binary 2015-02-03 13:42:40 +01:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po po: fix conflict with %.mo rule in rules.mak 2014-09-26 13:35:08 +02:00
qapi block: add accounting for merged requests 2015-02-06 17:24:21 +01:00
qga qga: fix false negative argument passing 2014-11-17 11:41:25 +01:00
qobject qjson: Drop trailing space for pretty formatting 2014-12-10 10:25:30 +01:00
qom cpu: initialize cpu->exception_index on reset 2014-12-20 20:38:07 +00:00
roms pseries: Update SLOF firmware image to 20141202 2015-01-07 16:16:27 +01:00
scripts -----BEGIN PGP SIGNATURE----- 2015-02-06 13:46:12 +00:00
slirp slirp: udp: fix NULL pointer dereference because of uninitialized socket 2014-09-23 19:15:05 +01:00
stubs block: Code motion to get rid of stubs/blockdev.c 2014-10-20 13:41:26 +02:00
sysconfigs/target
target-alpha exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-arm target-arm: fix for exponent comparison in recpe_f64 2015-02-05 13:37:25 +00:00
target-cris exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-i386 target-i386: Disable HLE and RTM on Haswell & Broadwell 2015-01-26 12:27:05 +01:00
target-lm32 exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-m68k exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-microblaze exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-mips target-mips: Don't use _raw load/store accessors 2015-01-20 15:19:33 +00:00
target-moxie exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-openrisc target-openrisc: bugfix for dec_sys to decode instructions correctly 2015-01-15 10:44:13 +03:00
target-ppc exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-s390x s390 translator bug fixes 2015-02-03 21:37:16 +00:00
target-sh4 exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
target-sparc target-sparc: Mark gen_load_trap_state_at_tl() as !CONFIG_USER_ONLY 2015-01-21 16:18:01 +00:00
target-tricore target-tricore: Add instructions of RRR opcode format 2015-01-27 11:48:02 +00:00
target-unicore32 gen-icount: check cflags instead of use_icount global 2015-01-03 09:22:12 +01:00
target-xtensa exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
tcg tcg: add separate monitor command to dump opcode counters 2014-12-17 05:49:32 +03:00
tests migration: Append JSON description of migration stream 2015-02-05 17:16:14 +01:00
trace trace: [hmp] Reimplement "trace-event" and "info trace-events" using QMP 2014-09-26 09:34:38 +01:00
ui spice: fix coverity defect, add unix address support 2015-01-22 13:56:11 +00:00
util rcu: add call_rcu 2015-02-02 16:55:10 +01:00
.exrc
.gitignore .gitignore: Ignore generated "common.env" 2015-01-13 13:43:28 +00:00
.gitmodules
.mailmap
.travis.yml .travis.yml: Add "--enable-modules" 2015-01-26 12:27:05 +01:00
accel.c accel: Create accel object when initializing machine 2014-10-09 15:36:14 +02:00
aio-posix.c block: Use g_new0() for a bit of extra type checking 2014-12-10 10:31:21 +01:00
aio-win32.c block: Use g_new0() for a bit of extra type checking 2014-12-10 10:31:21 +01:00
arch_init.c xbzrle: optimize XBZRLE to decrease the cache misses 2015-01-15 17:49:43 +05:30
async.c block: replace g_new0 with g_new for bottom half allocation. 2015-01-13 11:47:56 +00:00
balloon.c balloon: Eliminate silly QERR_ macros 2015-01-29 10:06:02 +01:00
block.c block: add accounting for merged requests 2015-02-06 17:24:21 +01:00
blockdev-nbd.c nbd: Change external interface to BlockBackend 2014-12-10 10:31:12 +01:00
blockdev.c block: Split BLOCK_OP_TYPE_COMMIT to BLOCK_OP_TYPE_COMMIT_{SOURCE, TARGET} 2015-01-13 13:43:29 +00:00
blockjob.c block: declare blockjobs and dataplane friends! 2014-11-03 11:41:49 +00:00
bootdevice.c bootdevice: add Error **errp argument for QEMUBootSetHandler 2014-12-22 14:39:21 +08:00
bt-host.c
bt-vhci.c
Changelog
CODING_STYLE CODING_STYLE: Section about conditional statement 2014-08-15 18:54:06 +04:00
configure block: use fallocate(FALLOC_FL_ZERO_RANGE) in handle_aiocb_write_zeroes 2015-02-06 17:24:20 +01:00
COPYING
COPYING.LIB
coroutine-gthread.c
coroutine-sigaltstack.c coroutine-sigaltstack: Change jmp_buf to sigjmp_buf 2014-11-11 11:07:55 +03:00
coroutine-ucontext.c coroutine-ucontext: use __thread 2015-01-13 13:43:28 +00:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec.c cpu-exec: simplify init_delay_params 2015-02-02 16:55:11 +01:00
cpus.c cpu-exec: simplify init_delay_params 2015-02-02 16:55:11 +01:00
cputlb.c qemu-log: add log category for MMU info 2014-12-16 18:43:19 +00:00
device_tree.c device-tree: fix memory leak 2015-01-07 16:16:26 +01:00
device-hotplug.c blockdev: Eliminate drive_del() 2014-10-20 13:41:26 +02:00
disas.c
dma-helpers.c hw: Convert from BlockDriverState to BlockBackend, mostly 2014-10-20 14:02:25 +02:00
dump.c dump: Fix dump-guest-memory termination and use-after-close 2014-11-02 10:04:34 +03:00
exec.c exec: fix madvise of NULL pointer 2015-01-26 12:27:05 +01:00
gdbstub.c Add the "-semihosting-config" option. 2014-12-11 12:07:48 +00:00
HACKING
hmp-commands.hx hmp: Remove "info pcmcia" 2014-10-24 12:19:11 +01:00
hmp.c block: add accounting for merged requests 2015-02-06 17:24:21 +01:00
hmp.h Add HMP command "info memory-devices" 2014-09-26 13:37:06 -04:00
iohandler.c
ioport.c memory: convert memory_region_destroy to object_unparent 2014-08-18 12:06:20 +02:00
iothread.c async: aio_context_new(): Handle event_notifier_init failure 2014-09-22 11:39:48 +01:00
kvm-all.c kvm: extend kvm_irqchip_add_msi_route to work on s390 2015-01-12 10:14:04 +01:00
kvm-stub.c pc: kvm: check if KVM has free memory slots to avoid abort() 2014-11-23 12:11:29 +02:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c Revert "main-loop.c: Handle SIGINT, SIGHUP and SIGTERM synchronously" 2014-10-27 15:05:09 +00:00
MAINTAINERS -----BEGIN PGP SIGNATURE----- 2015-02-06 14:35:52 +00:00
Makefile Makefile: Remove config.status and common.env during 'make distclean' 2015-01-15 10:44:13 +03:00
Makefile.objs QJSON: Add JSON writer 2015-02-05 17:16:14 +01:00
Makefile.target bootdevice: move bootdevice related code to new file bootdevice.c 2014-10-15 09:49:48 +02:00
memory_mapping.c Add skip_dump flag to ignore memory region during dump 2014-10-31 11:29:01 +01:00
memory.c memory: avoid ref/unref in memory_region_find 2015-02-02 16:55:10 +01:00
module-common.c
monitor.c -----BEGIN PGP SIGNATURE----- 2015-02-06 14:35:52 +00:00
nbd.c nbd: Use BlockBackend internally 2014-12-10 10:31:12 +01:00
numa.c numa: make 'info numa' take into account hotplugged memory 2014-11-11 08:50:58 +03:00
os-posix.c os-posix: reorder parent notification for -daemonize 2014-11-02 10:04:34 +03:00
os-win32.c pidfile: stop making pidfile error a special case 2014-11-02 10:04:34 +03:00
page_cache.c xbzrle: rebuild the cache_is_cached function 2015-01-15 17:49:43 +05:30
qapi-schema.json input: misc fixes. 2015-01-22 17:41:59 +00:00
qdev-monitor.c qdev: Use qdev_get_device_class() for -device <type>,help 2014-11-04 17:50:00 +01:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c Do not hang on full PTY 2015-01-15 10:44:13 +03:00
qemu-coroutine-io.c qemu-coroutine-io: fix for Win32 2014-08-29 10:46:58 +01:00
qemu-coroutine-lock.c
qemu-coroutine-sleep.c coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
qemu-coroutine.c coroutine: try harder not to delete coroutines 2015-01-13 13:43:29 +00:00
qemu-doc.texi block: vhdx - change .vhdx_create default block state to ZERO 2014-12-12 15:42:49 +00:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c qemu-img: Add QEMU_PKGVERSION to QEMU_IMG_VERSION 2015-02-06 17:24:21 +01:00
qemu-img.texi qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-io-cmds.c qemu-io: Add sigraise command 2014-12-12 15:48:26 +00:00
qemu-io.c qemu-io: Allow explicitly specifying format 2014-12-10 10:31:12 +01:00
qemu-log.c qemu-log: add log category for MMU info 2014-12-16 18:43:19 +00:00
qemu-nbd.c qemu-nbd: Use BlockBackend where reasonable 2014-12-10 10:31:12 +01:00
qemu-nbd.texi
qemu-options-wrapper.h
qemu-options.h
qemu-options.hx spice: add unix address support 2015-01-22 11:18:41 +01:00
qemu-seccomp.c seccomp: add mlockall to whitelist 2015-01-23 14:07:08 +01:00
qemu-tech.texi
qemu-timer.c qemu-timer.c: Trim list of included headers 2015-01-26 18:15:54 +00:00
qemu.nsi
qemu.sasl
qjson.c QJSON: Add JSON writer 2015-02-05 17:16:14 +01:00
qmp-commands.hx block: add accounting for merged requests 2015-02-06 17:24:21 +01:00
qmp.c qmp: Clean up qmp_query_spice() #ifndef !CONFIG_SPICE dummy 2015-01-29 10:01:54 +01:00
qtest.c qtest: fix qtest log fd should be initialized before qtest chardev 2014-10-23 16:41:27 +02:00
README
rules.mak rules.mak: Fix module build 2015-01-14 10:38:57 +01:00
savevm.c migration: Append JSON description of migration stream 2015-02-05 17:16:14 +01:00
softmmu_template.h softmmu: provide softmmu access type enum 2014-11-03 11:48:34 +00:00
spice-qemu-char.c spice: remove spice-experimental.h include 2014-12-16 14:15:29 +01:00
tcg-runtime.c
tci.c
thread-pool.c block: Rename BlockDriverCompletionFunc to BlockCompletionFunc 2014-10-20 13:41:27 +02:00
thunk.c
tpm.c
trace-events virtio-blk: introduce multiread 2015-02-06 17:24:21 +01:00
translate-all.c exec.c: Drop TARGET_HAS_ICE define and checks 2015-01-20 15:19:32 +00:00
translate-all.h
user-exec.c
VERSION Open 2.3 development tree 2014-12-09 21:48:34 +00:00
version.rc
vl.c vnc: switch to QemuOpts, allow multiple servers 2015-01-22 11:18:46 +01:00
xen-common-stub.c accel: Move Xen registration code to xen-common.c 2014-10-04 08:59:15 +02:00
xen-common.c accel: Pass MachineState object to accel init functions 2014-10-09 12:57:10 +02:00
xen-hvm-stub.c
xen-hvm.c Xen: Use the ioreq-server API when available 2015-01-20 14:24:10 +00:00
xen-mapcache.c xen: add a lock for the mapcache 2015-01-20 14:24:17 +00:00

README 

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

- QEMU team