The default test run outputs to stdout so it can be re-directed.
Errors are still reported to stderr.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>
Reviewed-by: NThomas Huth <thuth@redhat.com>

The fixed path and ports get in the way of running our tests and
builds in parallel. Instead of using TESTPATH we use mkdtemp() and
instead of a fixed port we allow the kernel to assign one and query it
afterwards.

Ideally test directory creation should be common functionally across
all TCG tests but this could complicate an already huge patch series
so we mark it as a TODO for next time.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>

Un-comment the remaining tests.

I removed the itimer value tests because I'm fairly sure a re-arming
timer will always have a different value in it when you grab it.

I've also fixed up the clone thread flags as QEMU will only allow a
clone to use flags which match glibc. However the test is still racey
so it remains disabled by default - it can be run by passing any
additional parameters on the command line.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

To keep the compiler happy, and to fit in our buildsys flags:

- Make local functions "static"
- #ifdef out unused functions
- drop cutils/osdep dependencies
Signed-off-by: NFam Zheng <famz@redhat.com>
[AJB: drop cutils/osdep dependencies]
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

We will want to build these for all supported guest architectures so
lets move them all into one place. We also drop test_path at this
point because it needs qemu utils and glib bits which is hard to
support for cross compiling.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NThomas Huth <thuth@redhat.com>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

Define this in one place to make it easy to re-use.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>

Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>

When calling our cross-compilation images we want to call something
other than the default cc.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NFam Zheng <famz@redhat.com>

Signed-off-by: NFam Zheng <famz@redhat.com>
[AJB: add if args.paths check]
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>

We can build tests for the host system with the compiler that we have
selected.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

As an individual compiler may be able to support several targets with
the appropriate flags we need to expose this to the user as well.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

Also dont assume x86_64 compiler can build i386 binaries.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Tested-by: NPhilippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

This allows us to specify cross compilers for our guests. This is
useful for building test images/programs. Currently we re-run the
compile test for each target. I couldn't think of a way to cache the
value for a given arch without getting messier configure code.

The cross compiler for the guest is visible to each target as
CROSS_CC_GUEST in config-target.mak. This is quoted to handle the case
of --cc="ccache gcc".
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>
Reviewed-by: NRichard Henderson <richard.henderson@linaro.org>

Although the docker.py is nominally python2 we actually invoke it with
the configured python from the configure script.
Signed-off-by: NAlex Bennée <alex.bennee@linaro.org>

- cleanup in virtio-ccw
- accommodate guests using vfio-ccw without specifying unlimited
  prefetch, but actually working fine
- add cpu model for the z14 Model ZR1
- add support for pxelinux.cfg-style network booting to the s390x
  firmware

# gpg: Signature made Tue 19 Jun 2018 10:33:06 BST
# gpg:                using RSA key DECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <conny@cornelia-huck.de>"
# gpg:                 aka "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# gpg:                 aka "Cornelia Huck <cohuck@kernel.org>"
# gpg:                 aka "Cornelia Huck <cohuck@redhat.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20180619:
  pc-bios/s390-ccw: Update the s390-netboot.img binary
  pc-bios/s390-ccw: Optimize the s390-netboot.img for size
  pc-bios/s390-ccw/net: Try to load pxelinux.cfg file accoring to the UUID
  pc-bios/s390-ccw/net: Add support for pxelinux-style config files
  pc-bios/s390-ccw/net: Update code for the latest changes in SLOF
  roms: Update SLOF submodule to current status
  pc-bios/s390-ccw: define loadparm length
  s390x/cpumodels: add z14 Model ZR1
  s390x/ipl: Try to detect Linux vs non Linux for initial IPL PSW
  vfio-ccw: remove orb.c64 (64 bit data addresses) check
  vfio-ccw: add force unlimited prefetch property
  virtio-ccw: clean up notify
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

qemu-openbios queue

# gpg: Signature made Mon 18 Jun 2018 19:28:08 BST
# gpg:                using RSA key 5BC2C56FAE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-openbios-20180618:
  Update OpenBIOS images to 8fe6f5f96f built from submodule.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

qemu-sparc queue

# gpg: Signature made Mon 18 Jun 2018 18:43:24 BST
# gpg:                using RSA key 5BC2C56FAE0F321F
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>"
# Primary key fingerprint: CC62 1AB9 8E82 200D 915C  C9C4 5BC2 C56F AE0F 321F

* remotes/mcayland/tags/qemu-sparc-20180618:
  SPARC64: add icount support
  hw/sparc/sun4m: Fix problems with device introspection
  hw/sparc64/sun4u: Fix introspection by converting prom instance_init to realize
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Place parallel device properly, fixing vga

# gpg: Signature made Mon 18 Jun 2018 17:45:50 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-axp-20180618:
  hw/isa/smc37c669: Change the parallel I/O base to 378H
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Block layer patches:

- Active mirror (blockdev-mirror copy-mode=write-blocking)
- bdrv_drain_*() fixes and test cases
- Fix crash with scsi-hd and drive_del

# gpg: Signature made Mon 18 Jun 2018 17:44:10 BST
# gpg:                using RSA key 7F09B272C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* remotes/kevin/tags/for-upstream: (35 commits)
  iotests: Add test for active mirroring
  block/mirror: Add copy mode QAPI interface
  block/mirror: Add active mirroring
  job: Add job_progress_increase_remaining()
  block/mirror: Add MirrorBDSOpaque
  block/dirty-bitmap: Add bdrv_dirty_iter_next_area
  test-hbitmap: Add non-advancing iter_next tests
  hbitmap: Add @advance param to hbitmap_iter_next()
  block: Generalize should_update_child() rule
  block/mirror: Use source as a BdrvChild
  block/mirror: Wait for in-flight op conflicts
  block/mirror: Use CoQueue to wait on in-flight ops
  block/mirror: Convert to coroutines
  block/mirror: Pull out mirror_perform()
  block: fix QEMU crash with scsi-hd and drive_del
  test-bdrv-drain: Test graph changes in drain_all section
  block: Allow graph changes in bdrv_drain_all_begin/end sections
  block: ignore_bds_parents parameter for drain functions
  block: Move bdrv_drain_all_begin() out of coroutine context
  block: Allow AIO_WAIT_WHILE with NULL ctx
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Monitor patches for 2018-06-18

# gpg: Signature made Mon 18 Jun 2018 14:50:29 BST
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-monitor-2018-06-18:
  monitor: add lock to protect mon_fdsets
  monitor: move init global earlier
  monitor: remove event_clock_type
  monitor: fix comment for monitor_lock
  monitor: more comments on lock-free elements
  monitor: protect mon->fds with mon_lock
  monitor: rename out_lock to mon_lock
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

input: ps2 post_load fix.

# gpg: Signature made Mon 18 Jun 2018 11:18:30 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/input-20180618-pull-request:
  ps2: check PS2Queue wptr pointer in post_load routine
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

vga: add ramfb, print virglrenderer version

# gpg: Signature made Mon 18 Jun 2018 10:57:38 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/vga-20180618-pull-request:
  Add ramfb MAINTAINERS entry
  hw/display: add standalone ramfb device
  hw/display: add ramfb, a simple boot framebuffer living in guest ram
  configure: print virglrenderer version
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

usb: revert ccid / qom patches.

# gpg: Signature made Mon 18 Jun 2018 10:21:11 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20180618-pull-request:
  Revert "bus: do not unref the added child bus on realize"
  Revert "usb: release the created buses"
  Revert "usb-ccid: fix bus leak"
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

ppc patch queue 2018-06-18

Next batch of ppc and spapr related patches for the 3.0 release.
    * Improved handling of Spectre/Meltdown mitigations for POWER8
    * Numerous Mac machine type cleanups and improvements
    * Cleanup to cpu realize/unrealize path for spapr
    * Create a place for machine-specific per-cpu information, and
      start moving some things to it
    * Assorted bugfixes

# gpg: Signature made Mon 18 Jun 2018 04:52:37 BST
# gpg:                using RSA key 6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg:                 aka "David Gibson (kernel.org) <dwg@kernel.org>"
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-3.0-20180618: (28 commits)
  spapr: fix xics_system_init() error path
  target/ppc, spapr: Move VPA information to machine_data
  ppc/pnv: introduce a pnv_chip_core_realize() routine
  spapr_cpu_core: introduce spapr_create_vcpu()
  spapr_cpu_core: add missing rollback on realization path
  spapr_cpu_core: fix potential leak in spapr_cpu_core_realize()
  spapr_cpu_core: convert last snprintf() to g_strdup_printf()
  pnv: Add cpu unrealize path
  pnv: Clean up cpu realize path
  pnv_core: Allocate cpu thread objects individually
  pnv: Fix some error handling cpu realize()
  spapr: Clean up cpu realize/unrealize paths
  sm501: Do not clear read only bits when writing registers
  mos6522: expose mos6522_update_irq() through MOS6522DeviceClass
  mos6522: remove additional interrupt flag filter from mos6522_update_irq()
  mos6522: only clear the shift register interrupt upon write
  xics_kvm: fix a build break
  mac_newworld: add PMU device
  adb: add property to disable direct reg 3 writes
  adb: fix read reg 3 byte ordering
  ...
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Python queue, 2018-06-15

* Add avocado_qemu: functional/acceptance test infrastructure

# gpg: Signature made Fri 15 Jun 2018 20:12:20 BST
# gpg:                using RSA key 2807936F984DC5A6
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>"
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/python-next-pull-request:
  configure: Enable out-of-tree acceptance tests
  Acceptance tests: add Linux kernel boot and console checking test
  scripts/qemu.py: introduce set_console() method
  Acceptance tests: add quick VNC tests
  scripts/qemu.py: allow adding to the list of extra arguments
  Add functional/acceptance tests infrastructure
  Remove COPYING.PYTHON
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NMark Cave-Ayland <mark.cave-ayland@ilande.co.uk>

Block patches:
- Active mirror (blockdev-mirror copy-mode=write-blocking)

# gpg: Signature made Mon Jun 18 17:08:19 2018 CEST
# gpg:                using RSA key F407DB0061D5CF40
# gpg: Good signature from "Max Reitz <mreitz@redhat.com>"
# Primary key fingerprint: 91BE B60A 30DB 3E88 57D1  1829 F407 DB00 61D5 CF40

* mreitz/tags/pull-block-2018-06-18:
  iotests: Add test for active mirroring
  block/mirror: Add copy mode QAPI interface
  block/mirror: Add active mirroring
  job: Add job_progress_increase_remaining()
  block/mirror: Add MirrorBDSOpaque
  block/dirty-bitmap: Add bdrv_dirty_iter_next_area
  test-hbitmap: Add non-advancing iter_next tests
  hbitmap: Add @advance param to hbitmap_iter_next()
  block: Generalize should_update_child() rule
  block/mirror: Use source as a BdrvChild
  block/mirror: Wait for in-flight op conflicts
  block/mirror: Use CoQueue to wait on in-flight ops
  block/mirror: Convert to coroutines
  block/mirror: Pull out mirror_perform()
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Add support for pxelinux.cfg-style network booting to the s390x firmware

# gpg: Signature made Mon 18 Jun 2018 03:59:06 PM CEST
# gpg:                using RSA key 2ED9D774FE702DB5
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [undefined]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [undefined]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]

* tag 'tags/s390x-2018-06-18':
  pc-bios/s390-ccw: Update the s390-netboot.img binary
  pc-bios/s390-ccw: Optimize the s390-netboot.img for size
  pc-bios/s390-ccw/net: Try to load pxelinux.cfg file accoring to the UUID
  pc-bios/s390-ccw/net: Add support for pxelinux-style config files
  pc-bios/s390-ccw/net: Update code for the latest changes in SLOF
  roms: Update SLOF submodule to current status
  pc-bios/s390-ccw: define loadparm length
Signed-off-by: NCornelia Huck <cohuck@redhat.com>

Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Message-id: 20180613181823.13618-15-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This patch allows the user to specify whether to use active or only
background mode for mirror block jobs.  Currently, this setting will
remain constant for the duration of the entire block job.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Message-id: 20180613181823.13618-14-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This patch implements active synchronous mirroring.  In active mode, the
passive mechanism will still be in place and is used to copy all
initially dirty clusters off the source disk; but every write request
will write data both to the source and the target disk, so the source
cannot be dirtied faster than data is mirrored to the target.  Also,
once the block job has converged (BLOCK_JOB_READY sent), source and
target are guaranteed to stay in sync (unless an error occurs).

Active mode is completely optional and currently disabled at runtime.  A
later patch will add a way for users to enable it.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-id: 20180613181823.13618-13-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

Signed-off-by: NMax Reitz <mreitz@redhat.com>
Message-id: 20180613181823.13618-12-mreitz@redhat.com
Reviewed-by: NKevin Wolf <kwolf@redhat.com>
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This will allow us to access the block job data when the mirror block
driver becomes more complex.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-id: 20180613181823.13618-11-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This new function allows to look for a consecutively dirty area in a
dirty bitmap.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 20180613181823.13618-10-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

Add a function that wraps hbitmap_iter_next() and always calls it in
non-advancing mode first, and in advancing mode next.  The result should
always be the same.

By using this function everywhere we called hbitmap_iter_next() before,
we should get good test coverage for non-advancing hbitmap_iter_next().
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 20180613181823.13618-9-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This new parameter allows the caller to just query the next dirty
position without moving the iterator.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NJohn Snow <jsnow@redhat.com>
Message-id: 20180613181823.13618-8-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

Currently, bdrv_replace_node() refuses to create loops from one BDS to
itself if the BDS to be replaced is the backing node of the BDS to
replace it: Say there is a node A and a node B.  Replacing B by A means
making all references to B point to A.  If B is a child of A (i.e. A has
a reference to B), that would mean we would have to make this reference
point to A itself -- so we'd create a loop.

bdrv_replace_node() (through should_update_child()) refuses to do so if
B is the backing node of A.  There is no reason why we should create
loops if B is not the backing node of A, though.  The BDS graph should
never contain loops, so we should always refuse to create them.

If B is a child of A and B is to be replaced by A, we should simply
leave B in place there because it is the most sensible choice.

A more specific argument would be: Putting filter drivers into the BDS
graph is basically the same as appending an overlay to a backing chain.
But the main child BDS of a filter driver is not "backing" but "file",
so restricting the no-loop rule to backing nodes would fail here.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Message-id: 20180613181823.13618-7-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

With this, the mirror_top_bs is no longer just a technically required
node in the BDS graph but actually represents the block job operation.

Also, drop MirrorBlockJob.source, as we can reach it through
mirror_top_bs->backing.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Reviewed-by: NAlberto Garcia <berto@igalia.com>
Message-id: 20180613181823.13618-6-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

This patch makes the mirror code differentiate between simply waiting
for any operation to complete (mirror_wait_for_free_in_flight_slot())
and specifically waiting for all operations touching a certain range of
the virtual disk to complete (mirror_wait_on_conflicts()).
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-id: 20180613181823.13618-5-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>

Attach a CoQueue to each in-flight operation so if we need to wait for
any we can use it to wait instead of just blindly yielding and hoping
for some operation to wake us.

A later patch will use this infrastructure to allow requests accessing
the same area of the virtual disk to specifically wait for each other.
Signed-off-by: NMax Reitz <mreitz@redhat.com>
Reviewed-by: NFam Zheng <famz@redhat.com>
Message-id: 20180613181823.13618-4-mreitz@redhat.com
Signed-off-by: NMax Reitz <mreitz@redhat.com>