sdk/emulator/qemu.git
8 years agoMerge remote-tracking branch 'remotes/berrange/tags/pull-qcrypto-2016-07-21-1' into...
Peter Maydell [Thu, 21 Jul 2016 10:48:49 +0000 (11:48 +0100)]
Merge remote-tracking branch 'remotes/berrange/tags/pull-qcrypto-2016-07-21-1' into staging

Merge qcrypto-next 2016/07/21 v1

# gpg: Signature made Thu 21 Jul 2016 11:07:36 BST
# gpg:                using RSA key 0xBE86EBB415104FDF
# gpg: Good signature from "Daniel P. Berrange <dan@berrange.com>"
# gpg:                 aka "Daniel P. Berrange <berrange@redhat.com>"
# Primary key fingerprint: DAF3 A6FD B26B 6291 2D0E  8E3F BE86 EBB4 1510 4FDF

* remotes/berrange/tags/pull-qcrypto-2016-07-21-1:
  crypto: don't open-code qcrypto_hash_supports
  crypto: use glib as fallback for hash algorithm
  crypto: use /dev/[u]random as a final fallback random source

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Peter Maydell [Thu, 21 Jul 2016 10:00:36 +0000 (11:00 +0100)]
Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

v2:
 * Resolved merge conflict with block/iscsi.c [Peter]

# gpg: Signature made Wed 20 Jul 2016 17:20:52 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request: (25 commits)
  raw_bsd: Convert to byte-based interface
  nbd: Convert to byte-based interface
  block: Kill .bdrv_co_discard()
  sheepdog: Switch .bdrv_co_discard() to byte-based
  raw_bsd: Switch .bdrv_co_discard() to byte-based
  qcow2: Switch .bdrv_co_discard() to byte-based
  nbd: Switch .bdrv_co_discard() to byte-based
  iscsi: Switch .bdrv_co_discard() to byte-based
  gluster: Switch .bdrv_co_discard() to byte-based
  blkreplay: Switch .bdrv_co_discard() to byte-based
  block: Add .bdrv_co_pdiscard() driver callback
  block: Convert .bdrv_aio_discard() to byte-based
  rbd: Switch rbd_start_aio() to byte-based
  raw-posix: Switch paio_submit() to byte-based
  block: Convert BB interface to byte-based discards
  block: Convert bdrv_aio_discard() to byte-based
  block: Switch BlockRequest to byte-based
  block: Convert bdrv_discard() to byte-based
  block: Convert bdrv_co_discard() to byte-based
  iscsi: Rely on block layer to break up large requests
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Conflicts:
block/gluster.c

8 years agoRevert e5dfc5e8e("Move README to markdown")
Pranith Kumar [Wed, 20 Jul 2016 20:31:29 +0000 (16:31 -0400)]
Revert e5dfc5e8e("Move README to markdown")

checkpatch.pl and other scripts fail without README. Revert
the rename for now; we may add README.md as a symlink later.

This reverts commit e5dfc5e8e715c572aea44ac4d96c43941d4741c7.

Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
Reviewed-by: Stefan Weil <sw@weilnetz.de>
Message-id: 20160720203131.30229-2-bobby.prani@gmail.com
[PMM: tweaked commit message a little]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agocrypto: don't open-code qcrypto_hash_supports
Daniel P. Berrange [Tue, 5 Jul 2016 16:41:45 +0000 (17:41 +0100)]
crypto: don't open-code qcrypto_hash_supports

Call the existing qcrypto_hash_supports method from
qcrypto_hash_bytesv instead of open-coding it again.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agocrypto: use glib as fallback for hash algorithm
Daniel P. Berrange [Tue, 5 Jul 2016 10:45:42 +0000 (11:45 +0100)]
crypto: use glib as fallback for hash algorithm

GLib >= 2.16 provides GChecksum API which is good enough
for md5, sha1, sha256 and sha512. Use this as a final
fallback if neither nettle or gcrypt are available. This
lets us remove the stub hash impl, and so callers can
be sure those 4 algs are always available at compile
time. They may still be disabled at runtime, so a check
for qcrypto_hash_supports() is still best practice to
report good error messages.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agocrypto: use /dev/[u]random as a final fallback random source
Daniel P. Berrange [Thu, 21 Jul 2016 09:37:14 +0000 (10:37 +0100)]
crypto: use /dev/[u]random as a final fallback random source

If neither gcrypt or gnutls are available to provide a
cryptographic random number generator, fallback to consuming
bytes directly from /dev/[u]random.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging
Peter Maydell [Wed, 20 Jul 2016 20:32:56 +0000 (21:32 +0100)]
Merge remote-tracking branch 'remotes/ehabkost/tags/x86-pull-request' into staging

x86 queue, 2016-07-20

# gpg: Signature made Wed 20 Jul 2016 16:07:38 BST
# gpg:                using RSA key 0x2807936F984DC5A6
# 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/x86-pull-request: (28 commits)
  pc: Make device_del CPU work for x86 CPUs
  target-i386: Add x86_cpu_unrealizefn()
  apic: Use apic_id as apic's migration instance_id
  (kvm)apic: Add unrealize callbacks
  apic: kvm-apic: Fix crash due to access to freed memory region
  apic: Drop APICCommonState.idx and use APIC ID as index in local_apics[]
  apic: move MAX_APICS check to 'apic' class
  pc: Implement query-hotpluggable-cpus callback
  pc: cpu: Allow device_add to be used with x86 cpu
  pc: Enforce adding CPUs contiguously and removing them in opposite order
  pc: Forbid BSP removal
  pc: Register created initial and hotpluged CPUs in one place pc_cpu_plug()
  pc: Delay setting number of boot CPUs to machine_done time
  pc: Set APIC ID based on socket/core/thread ids if it's not been set yet
  target-i386: Fix apic object leak when CPU is deleted
  target-i386: cpu: Do not ignore error and fix apic parent
  target-i386: Add support for UMIP and RDPID CPUID bits
  target-i386: Add socket/core/thread properties to X86CPU
  target-i386: Replace custom apic-id setter/getter with static property
  pc: cpu: Consolidate apic-id validity checks in pc_cpu_pre_plug()
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/cohuck/tags/s390x-20160720' into staging
Peter Maydell [Wed, 20 Jul 2016 19:59:05 +0000 (20:59 +0100)]
Merge remote-tracking branch 'remotes/cohuck/tags/s390x-20160720' into staging

Fixes for s390x in the css area.

# gpg: Signature made Wed 20 Jul 2016 15:12:43 BST
# gpg:                using RSA key 0xDECF6B93C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg:                 aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
# Primary key fingerprint: C3D0 D66D C362 4FF6 A8C0  18CE DECF 6B93 C6F0 2FAF

* remotes/cohuck/tags/s390x-20160720:
  s390x/css: provide a dev_path for css devices
  s390x/css: sch_handle_start_func() handles resume, too
  s390x/css: copy CCW format bit from ORB to SCSW

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20160720-1' into staging
Peter Maydell [Wed, 20 Jul 2016 19:31:31 +0000 (20:31 +0100)]
Merge remote-tracking branch 'remotes/kraxel/tags/pull-usb-20160720-1' into staging

usb: xhci assert fix, add usbredir streams property

# gpg: Signature made Wed 20 Jul 2016 12:32:09 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# 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/pull-usb-20160720-1:
  usbredir: add streams property
  xhci: Fix possible side effect from assert()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20160720-1' into staging
Peter Maydell [Wed, 20 Jul 2016 18:41:20 +0000 (19:41 +0100)]
Merge remote-tracking branch 'remotes/kraxel/tags/pull-vga-20160720-1' into staging

qxl: fix qxl_set_dirty call in qxl_dirty_one_surface

# gpg: Signature made Wed 20 Jul 2016 12:28:01 BST
# gpg:                using RSA key 0x4CB6D8EED3E87138
# 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/pull-vga-20160720-1:
  qxl: fix qxl_set_dirty call in qxl_dirty_one_surface

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging
Peter Maydell [Wed, 20 Jul 2016 17:52:10 +0000 (18:52 +0100)]
Merge remote-tracking branch 'remotes/famz/tags/docker-pull-request' into staging

# gpg: Signature made Wed 20 Jul 2016 12:19:56 BST
# gpg:                using RSA key 0xCA35624C6A9171C6
# gpg: Good signature from "Fam Zheng <famz@redhat.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg:          There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 5003 7CB7 9706 0F76 F021  AD56 CA35 624C 6A91 71C6

* remotes/famz/tags/docker-pull-request:
  docker: pass EXECUTABLE to build script
  docker: Don't start a container that doesn't exist
  docker: Add "images" subcommand to docker.py
  docker: Fix exit code if $CMD failed
  docker: More sensible run script
  tests/docker/docker.py: add update operation
  tests/docker/dockerfiles: new debian-bootstrap.docker
  tests/docker/docker.py: check and run .pre script
  tests/docker/docker.py: support --include-executable
  tests/docker/docker.py: docker_dir outside build

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoMerge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging
Peter Maydell [Wed, 20 Jul 2016 16:05:35 +0000 (17:05 +0100)]
Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Wed 20 Jul 2016 01:18:39 BST
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  block/gluster: add support for multiple gluster servers
  block/gluster: using new qapi schema
  block/gluster: deprecate rdma support
  block/gluster: code cleanup
  block/gluster: rename [server, volname, image] -> [host, volume, path]
  mirror: fix request throttling in drive-mirror
  mirror: improve performance of mirroring of empty disk
  mirror: efficiently zero out target
  mirror: optimize dirty bitmap filling in mirror_run a bit
  block: remove extra condition in bdrv_can_write_zeroes_with_unmap
  mirror: create mirror_dirty_init helper for mirror_run
  mirror: create mirror_throttle helper
  mirror: make sectors_in_flight int64_t
  dirty-bitmap: operate with int64_t amount

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agopc: Make device_del CPU work for x86 CPUs
Igor Mammedov [Fri, 24 Jun 2016 13:36:11 +0000 (15:36 +0200)]
pc: Make device_del CPU work for x86 CPUs

ACPI subsystem already has all logic in place the only
thing left to eject CPU is destroy it and ammend
present CPUs counter in CMOS, do so.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Add x86_cpu_unrealizefn()
Igor Mammedov [Fri, 24 Jun 2016 14:01:02 +0000 (16:01 +0200)]
target-i386: Add x86_cpu_unrealizefn()

First remove VCPU from exec loop and only then remove lapic.

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoapic: Use apic_id as apic's migration instance_id
Igor Mammedov [Fri, 1 Jul 2016 15:53:56 +0000 (17:53 +0200)]
apic: Use apic_id as apic's migration instance_id

instance_id is generated by last_used_id + 1 for a given device type
so for QEMU with 3 CPUs instance_id for APICs is a seti of [0, 1, 2]
When CPU in the middle is hot-removed and migration started
APICs with instance_ids 0 and 2 are transferred in migration stream.
However target starts with 2 CPUs and APICs' instance_ids are
generated from scratch [0, 1] hence migration fails with error
  Unknown savevm section or instance 'apic' 2

Fix issue by manually registering APIC's vmsd with apic_id as
instance_id, in this case instance_id on target will always
match instance_id on source as apic_id is the same for a given
cpu instance.

Reported-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years ago(kvm)apic: Add unrealize callbacks
Igor Mammedov [Thu, 23 Jun 2016 15:30:14 +0000 (17:30 +0200)]
(kvm)apic: Add unrealize callbacks

Callbacks will do necessary cleanups before APIC device is deleted

Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Zhu Guihua <zhugh.fnst@cn.fujitsu.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoapic: kvm-apic: Fix crash due to access to freed memory region
Igor Mammedov [Thu, 14 Jul 2016 14:58:02 +0000 (16:58 +0200)]
apic: kvm-apic: Fix crash due to access to freed memory region

kvm-apic.io_memory memory region had its parent set to NULL at
memory_region_init_io() time, so it ended up as a child in
 /unattached contaner.
As result when kvm-apic instance was deleted, the child property
 /unattached/kvm-apic-msi[XXX] contained a reference to
kvm-apic.io_memory address which was freed as part of kvm-apic.

Do the same as 'apic' and make kvm-apic instance the owner
of the memory region so that it won't end up in /unattached
and gets cleanly released along with related kvm-apic instance.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoapic: Drop APICCommonState.idx and use APIC ID as index in local_apics[]
Igor Mammedov [Fri, 24 Jun 2016 14:27:00 +0000 (16:27 +0200)]
apic: Drop APICCommonState.idx and use APIC ID as index in local_apics[]

local_apics[] is sized to contain all APIC ID supported in xAPIC mode,
so use APIC ID as index in it instead of constantly increasing counter idx.

Fixes error "apic initialization failed" when a CPU hotplugged and
unplugged more times than there are free slots in local_apics[].

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agoapic: move MAX_APICS check to 'apic' class
Igor Mammedov [Thu, 5 May 2016 15:14:37 +0000 (17:14 +0200)]
apic: move MAX_APICS check to 'apic' class

MAX_APICS is only used by child 'apic' class and not
by its parent TYPE_APIC_COMMON or any other derived
class.

Move check into end user 'apic' class so it won't
get in the way of other APIC implementations
if they support more then MAX_APICS.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Radim Krčmář <rkrcmar@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Implement query-hotpluggable-cpus callback
Igor Mammedov [Wed, 22 Jun 2016 09:11:42 +0000 (11:11 +0200)]
pc: Implement query-hotpluggable-cpus callback

it returns a list of present/possible to hotplug CPU
objects with a list of properties to use with
device_add.

in PC case returned list would looks like:
-> { "execute": "query-hotpluggable-cpus" }
<- {"return": [
     {
        "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
        "props": {"core-id": 0, "socket-id": 1, "thread-id": 0}
     },
     {
        "qom-path": "/machine/unattached/device[0]",
        "type": "qemu64-x86_64-cpu", "vcpus-count": 1,
        "props": {"core-id": 0, "socket-id": 0, "thread-id": 0}
     }
   ]}

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: cpu: Allow device_add to be used with x86 cpu
Igor Mammedov [Fri, 27 May 2016 11:50:48 +0000 (13:50 +0200)]
pc: cpu: Allow device_add to be used with x86 cpu

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Enforce adding CPUs contiguously and removing them in opposite order
Igor Mammedov [Mon, 18 Jul 2016 08:32:36 +0000 (10:32 +0200)]
pc: Enforce adding CPUs contiguously and removing them in opposite order

It will still allow us to use cpu_index as migration instance_id
since when CPUs are added contiguously (from the first to the last)
and removed in opposite order, cpu_index stays stable and it's
reproducible on destination side.

While there is work in progress to support migration when there
are holes in cpu_index range resulting from out-of-order plug or
unplug, this patch is intended as an interim solution until
cpu_index usage is cleaned up.

As result of this patch it would be possible to plug/unplug CPUs,
but in limited order that doesn't break migration.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Forbid BSP removal
Igor Mammedov [Mon, 18 Jul 2016 08:31:22 +0000 (10:31 +0200)]
pc: Forbid BSP removal

Boot CPU is assumed to always present in QEMU code, so
untile that assumptions are gone, deny removal request,
In another words QEMU won't support BSP hot-unplug.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Register created initial and hotpluged CPUs in one place pc_cpu_plug()
Igor Mammedov [Thu, 14 Jul 2016 16:54:32 +0000 (18:54 +0200)]
pc: Register created initial and hotpluged CPUs in one place pc_cpu_plug()

Consolidate possible_cpus array management in pc_cpu_plug() for
smp_cpus, coldplugged with -device and hotplugged with
device_add.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Delay setting number of boot CPUs to machine_done time
Igor Mammedov [Thu, 14 Jul 2016 16:54:31 +0000 (18:54 +0200)]
pc: Delay setting number of boot CPUs to machine_done time

Currently present CPUs counter in CMOS only contains
smp_cpus (i.e. initial CPUs specified with -smp X) and
doesn't account for CPUs created with -device.
If VM is started with additional CPUs added with
 -device, it will hang in BIOS waiting for condition
   smp_cpus == counted_cpus
forever as counted_cpus will include -device CPUs as well
and be more than smp_cpus.

Make present CPUs counter in CMOS to count all CPUs
(initial and coldplugged with -device) by delaying
it to machine done time when it possible to count
CPUs added with -device.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
8 years agopc: Set APIC ID based on socket/core/thread ids if it's not been set yet
Igor Mammedov [Thu, 14 Jul 2016 16:54:30 +0000 (18:54 +0200)]
pc: Set APIC ID based on socket/core/thread ids if it's not been set yet

CPU added with device_add help won't have APIC ID set,
so set it according to socket/core/thread ids provided
with device_add command.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Fix apic object leak when CPU is deleted
Igor Mammedov [Wed, 6 Jul 2016 06:20:53 +0000 (08:20 +0200)]
target-i386: Fix apic object leak when CPU is deleted

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: cpu: Do not ignore error and fix apic parent
Igor Mammedov [Wed, 6 Jul 2016 06:20:52 +0000 (08:20 +0200)]
target-i386: cpu: Do not ignore error and fix apic parent

object_property_add_child() silently fails with error that it can't
create duplicate propery 'apic' as we already have 'apic' property
registered for 'apic' feature. As result generic device_realize puts
apic into unattached container.

As it's programming error, abort if name collision happens in future
and fix property name for apic_state to 'lapic', this way apic is
a child of cpu instance.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Add support for UMIP and RDPID CPUID bits
Paolo Bonzini [Tue, 12 Jul 2016 09:15:44 +0000 (11:15 +0200)]
target-i386: Add support for UMIP and RDPID CPUID bits

These are both stored in CPUID[EAX=7,EBX=0].ECX.  KVM is going to
be able to emulate both (albeit with a performance loss in the case
of RDPID, which therefore will be in KVM_GET_EMULATED_CPUID rather
than KVM_GET_SUPPORTED_CPUID).

It's also possible to implement both in TCG, but this is for 2.8.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Add socket/core/thread properties to X86CPU
Igor Mammedov [Wed, 6 Jul 2016 06:20:42 +0000 (08:20 +0200)]
target-i386: Add socket/core/thread properties to X86CPU

These properties will be used by as address where to plug
CPU with help -device/device_add commands.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Replace custom apic-id setter/getter with static property
Igor Mammedov [Wed, 6 Jul 2016 06:20:41 +0000 (08:20 +0200)]
target-i386: Replace custom apic-id setter/getter with static property

Custom apic-id setter/getter doesn't do any property specific
checks anymore, so clean it up and use more compact static
property DEFINE_PROP_UINT32 instead.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: cpu: Consolidate apic-id validity checks in pc_cpu_pre_plug()
Igor Mammedov [Wed, 6 Jul 2016 06:20:40 +0000 (08:20 +0200)]
pc: cpu: Consolidate apic-id validity checks in pc_cpu_pre_plug()

Machine code knows about all possible APIC IDs so use that
instead of hack which does O(n^2) complexity duplicate
checks, interating over global CPUs list.
As result duplicate check is done only once with O(log n) complexity.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Extract CPU lookup into a separate function
Igor Mammedov [Wed, 6 Jul 2016 06:20:39 +0000 (08:20 +0200)]
pc: Extract CPU lookup into a separate function

It will be reused in the next patch at pre_plug time

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Set physical address bits based on host
Dr. David Alan Gilbert [Mon, 11 Jul 2016 19:28:46 +0000 (20:28 +0100)]
target-i386: Set physical address bits based on host

Add the host-phys-bits boolean property, if true, take phys-bits
from the hosts physical bits value, overriding either the default
or the user specified value.

We can also use the value we read from the host to check the users
explicitly set value and warn them if it doesn't match.

Note:
   a) We only read the hosts value in KVM mode (because on non-x86
      we get an abort if we try)
   b) We don't warn about trying to use host-phys-bits in TCG mode,
      we just fall back to the TCG default.  This allows the machine
      type to set the host-phys-bits flag if it wants and then to
      work in both TCG and KVM.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agopc: Add x86_topo_ids_from_apicid()
Igor Mammedov [Wed, 6 Jul 2016 06:20:38 +0000 (08:20 +0200)]
pc: Add x86_topo_ids_from_apicid()

It's reverse of apicid_from_topo_ids() and will be used in follow up
patches to fill in data structures for query-hotpluggable-cpus and
for user friendly error reporting.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Use uint32_t for X86CPU.apic_id
Igor Mammedov [Wed, 6 Jul 2016 06:20:37 +0000 (08:20 +0200)]
target-i386: Use uint32_t for X86CPU.apic_id

Redo 9886e834 (target-i386: Require APIC ID to be explicitly set before
CPU realize) in another way that doesn't use int64_t to detect
if apic-id property has been set.

Use the fact that 0xFFFFFFFF is the broadcast
value that a CPU can't have and set default
uint32_t apic_id to it instead of using int64_t.

Later uint32_t apic_id will be used to drop custom
property setter/getter in favor of static property.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Fill high bits of mtrr mask
Dr. David Alan Gilbert [Fri, 8 Jul 2016 15:01:38 +0000 (16:01 +0100)]
target-i386: Fill high bits of mtrr mask

Fill the bits between 51..number-of-physical-address-bits in the
MTRR_PHYSMASKn variable range mtrr masks so that they're consistent
in the migration stream irrespective of the physical address space
of the source VM in a migration.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Mask mtrr mask based on CPU physical address limits
Dr. David Alan Gilbert [Fri, 8 Jul 2016 15:01:37 +0000 (16:01 +0100)]
target-i386: Mask mtrr mask based on CPU physical address limits

The CPU GPs if we try and set a bit in a variable MTRR mask above
the limit of physical address bits on the host.  We hit this
when loading a migration from a host with a larger physical
address limit than our destination (e.g. a Xeon->i7 of same
generation) but previously used to get away with it
until 48e1a45 started checking that msr writes actually worked.

It seems in our case the GP probably comes from KVM emulating
that GP.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Allow physical address bits to be set
Dr. David Alan Gilbert [Fri, 8 Jul 2016 15:01:36 +0000 (16:01 +0100)]
target-i386: Allow physical address bits to be set

Currently QEMU sets the x86 number of physical address bits to the
magic number 40.  This is only correct on some small AMD systems;
Intel systems tend to have 36, 39, 46 bits, and large AMD systems
tend to have 48.

Having the value different from your actual hardware is detectable
by the guest and in principal can cause problems;
The current limit of 40 stops TB VMs being created by those lucky
enough to have that much.

This patch lets you set the physical bits by a cpu property but
defaults to the same 40bits which matches TCGs setup.

I've removed the ancient warning about the 42 bit limit in exec.c;
I can't find that limit in there and no one else seems to know where
it is.

We use a magic value of 0 as the property default so that we can
later distinguish between the default and a user set value.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agotarget-i386: Provide TCG_PHYS_ADDR_BITS
Dr. David Alan Gilbert [Fri, 8 Jul 2016 15:01:35 +0000 (16:01 +0100)]
target-i386: Provide TCG_PHYS_ADDR_BITS

Provide a constant for the number of address bits supported under TCG.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
8 years agos390x/css: provide a dev_path for css devices
Cornelia Huck [Mon, 11 Jul 2016 10:55:44 +0000 (12:55 +0200)]
s390x/css: provide a dev_path for css devices

We need to implement the get_dev_path method for the css bus, or
else we might end up with two different devices having the same
qdev_path.

This was noticed when adding two scsi_hd controllers: The SCSIBus
code will produce a non-unique dev_path for vmstate usage if the
parent bus does not provide the get_dev_path method.

We simply use the device's bus id, as this is unique and we won't
have any deeper hierarchy from a channel subsystem perspective
anyway.

Note that we need to disable this for older machine versions,
as this changes the migration format.

Reported-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Reviewed-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Tested-by: Marc Hartmayer <mhartmay@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x/css: sch_handle_start_func() handles resume, too
Sascha Silbe [Tue, 12 Jul 2016 12:08:08 +0000 (14:08 +0200)]
s390x/css: sch_handle_start_func() handles resume, too

It's not obvious from the code flow that sch_handle_start_func() gets
called for rsch. Add some comments explaining this.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agos390x/css: copy CCW format bit from ORB to SCSW
Sascha Silbe [Mon, 11 Jul 2016 11:00:36 +0000 (13:00 +0200)]
s390x/css: copy CCW format bit from ORB to SCSW

The CCW Format (F) flag of the Subchannel-Status Word (SCSW) indicates
the format of the CCWs "associated with an I/O operation", i.e. the
value of CCW-Format Control (F) bit of the Operation-Request Block
(ORB).

Copy the CCW format bit from the ORB to the SCSW so we correctly
indicate the format of the CCWs to the guest.

Signed-off-by: Sascha Silbe <silbe@linux.vnet.ibm.com>
Reviewed-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
8 years agoMerge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-07-19' into staging
Peter Maydell [Wed, 20 Jul 2016 13:34:08 +0000 (14:34 +0100)]
Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2016-07-19' into staging

QAPI patches for 2016-07-19

# gpg: Signature made Tue 19 Jul 2016 19:35:27 BST
# gpg:                using RSA key 0x3870B400EB918653
# 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-qapi-2016-07-19:
  net: Use correct type for bool flag
  qapi: Change Netdev into a flat union
  block: Simplify drive-mirror
  block: Simplify block_set_io_throttle
  qapi: Implement boxed types for commands/events
  qapi: Plumb in 'boxed' to qapi generator lower levels
  qapi-event: Simplify visit of non-implicit data
  qapi: Drop useless gen_err_check()
  qapi: Add type.is_empty() helper
  qapi: Hide tag_name data member of variants
  qapi: Special case c_name() for empty type
  qapi: Require all branches of flat union enum to be covered
  net: use Netdev instead of NetClientOptions in client init
  qapi: change QmpInputVisitor to QSLIST
  qapi: change QmpOutputVisitor to QSLIST

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoraw_bsd: Convert to byte-based interface
Eric Blake [Fri, 15 Jul 2016 23:23:08 +0000 (17:23 -0600)]
raw_bsd: Convert to byte-based interface

Since the raw format driver is just passing things through, we can
do byte-based read and write if the underlying protocol does
likewise.

There's one tricky part - if we probed the image format, we document
that we restrict operations on the initial sector.  It's easiest to
keep this guarantee by enforcing read-modify-write on sub-sector
operations (yes, this partially reverts commit ad82be2f).

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1468624988-423-20-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agonbd: Convert to byte-based interface
Eric Blake [Fri, 15 Jul 2016 23:23:07 +0000 (17:23 -0600)]
nbd: Convert to byte-based interface

The NBD protocol doesn't have any notion of sectors, so it is
a fairly easy conversion to use byte-based read and write.

Signed-off-by: Eric Blake <eblake@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468624988-423-19-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Kill .bdrv_co_discard()
Eric Blake [Fri, 15 Jul 2016 23:23:06 +0000 (17:23 -0600)]
block: Kill .bdrv_co_discard()

Now that all drivers have a byte-based .bdrv_co_pdiscard(), we
no longer need to worry about the sector-based version.  We can
also relax our minimum alignment to 1 for drivers that support it.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-18-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agosheepdog: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:05 +0000 (17:23 -0600)]
sheepdog: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-17-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoraw_bsd: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:04 +0000 (17:23 -0600)]
raw_bsd: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-16-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoqcow2: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:03 +0000 (17:23 -0600)]
qcow2: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-15-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agonbd: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:02 +0000 (17:23 -0600)]
nbd: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

While at it, call directly into nbd-client.c instead of having
a pointless trivial wrapper in nbd.c.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-14-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoiscsi: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:01 +0000 (17:23 -0600)]
iscsi: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Unlike write_zeroes, where we can be handed unaligned requests
and must fail gracefully with -ENOTSUP for a fallback, we are
guaranteed that discard requests are always aligned because the
block layer already ignored unaligned head/tail.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-13-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agogluster: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:23:00 +0000 (17:23 -0600)]
gluster: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-12-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblkreplay: Switch .bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:59 +0000 (17:22 -0600)]
blkreplay: Switch .bdrv_co_discard() to byte-based

Another step towards killing off sector-based block APIs.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-11-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Add .bdrv_co_pdiscard() driver callback
Eric Blake [Fri, 15 Jul 2016 23:22:58 +0000 (17:22 -0600)]
block: Add .bdrv_co_pdiscard() driver callback

There's enough drivers with a sector-based callback that it will
be easier to switch one at a time.  This patch adds a byte-based
callback, and then after all drivers are swapped, we'll drop the
sector-based callback.

[checkpatch doesn't like the space after coroutine_fn in
block_int.h, but it's consistent with the rest of the file]

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-10-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Convert .bdrv_aio_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:57 +0000 (17:22 -0600)]
block: Convert .bdrv_aio_discard() to byte-based

Another step towards byte-based interfaces everywhere.  Replace
the sector-based driver callback .bdrv_aio_discard() with a new
byte-based .bdrv_aio_pdiscard().  Only raw-posix and RBD drivers
are affected, so it was not worth splitting into multiple patches.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-9-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agorbd: Switch rbd_start_aio() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:56 +0000 (17:22 -0600)]
rbd: Switch rbd_start_aio() to byte-based

The internal function converts to byte-based before calling into
RBD code; hoist the conversion to the callers so that callers
can then be switched to byte-based themselves.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-8-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoraw-posix: Switch paio_submit() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:55 +0000 (17:22 -0600)]
raw-posix: Switch paio_submit() to byte-based

The only remaining uses of paio_submit() were flush (with no
offset or count) and discard (which we are switching to byte-based);
furthermore, the similarly named paio_submit_co() is already
byte-based.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-7-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Convert BB interface to byte-based discards
Eric Blake [Fri, 15 Jul 2016 23:22:54 +0000 (17:22 -0600)]
block: Convert BB interface to byte-based discards

Change sector-based blk_discard(), blk_co_discard(), and
blk_aio_discard() to instead be byte-based blk_pdiscard(),
blk_co_pdiscard(), and blk_aio_pdiscard().  NBD gets a lot
simpler now that ignoring the unaligned portion of a
byte-based discard request is handled under the hood by
the block layer.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-6-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Convert bdrv_aio_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:53 +0000 (17:22 -0600)]
block: Convert bdrv_aio_discard() to byte-based

Another step towards byte-based interfaces everywhere.  Replace
the sector-based bdrv_aio_discard() with a new byte-based
bdrv_aio_pdiscard(), which silently ignores any unaligned head
or tail.  Driver callbacks will be converted in followup patches.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1468624988-423-5-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Switch BlockRequest to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:52 +0000 (17:22 -0600)]
block: Switch BlockRequest to byte-based

BlockRequest is the internal struct used by bdrv_aio_*.  At the
moment, all such calls were sector-based, but we will eventually
convert to byte-based; start by changing the internal variables
to be byte-based.  No change to behavior, although the read and
write code can now go byte-based through more of the stack.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1468624988-423-4-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Convert bdrv_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:51 +0000 (17:22 -0600)]
block: Convert bdrv_discard() to byte-based

Another step towards byte-based interfaces everywhere.  Replace
the sector-based bdrv_discard() with a new byte-based
bdrv_pdiscard(), which silently ignores any unaligned head
or tail.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-3-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Convert bdrv_co_discard() to byte-based
Eric Blake [Fri, 15 Jul 2016 23:22:50 +0000 (17:22 -0600)]
block: Convert bdrv_co_discard() to byte-based

Another step towards byte-based interfaces everywhere.  Replace
the sector-based bdrv_co_discard() with a new byte-based
bdrv_co_pdiscard(), which silently ignores any unaligned head
or tail.  Driver callbacks will be converted in followup patches.

By calculating the alignment outside of the loop, and clamping
the max discard to an aligned value, we can simplify the actions
done within the loop.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468624988-423-2-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoiscsi: Rely on block layer to break up large requests
Eric Blake [Fri, 15 Jul 2016 18:32:04 +0000 (12:32 -0600)]
iscsi: Rely on block layer to break up large requests

Now that the block layer honors max_request, we don't need to
bother with an EINVAL on overlarge requests, but can instead
assert that requests are well-behaved.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468607524-19021-7-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agonbd: Drop unused offset parameter
Eric Blake [Fri, 15 Jul 2016 18:32:03 +0000 (12:32 -0600)]
nbd: Drop unused offset parameter

Now that NBD relies on the block layer to fragment things, we no
longer need to track an offset argument for which fragment of
a request we are actually servicing.

While at it, use true and false instead of 0 and 1 for a bool
parameter.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468607524-19021-6-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agonbd: Rely on block layer to break up large requests
Eric Blake [Fri, 15 Jul 2016 18:32:02 +0000 (12:32 -0600)]
nbd: Rely on block layer to break up large requests

Now that the block layer will honor max_transfer, we can simplify
our code to rely on that guarantee.

The readv code can call directly into nbd-client, just as the
writev code has done since commit 52a4650.

Interestingly enough, while qemu-io 'w 0 40m' splits into a 32M
and 8M transaction, 'w -z 0 40m' splits into two 16M and an 8M,
because the block layer caps the bounce buffer for writing zeroes
at 16M.  When we later introduce support for NBD_CMD_WRITE_ZEROES,
we can get a full 32M zero write (or larger, if the client and
server negotiate that write zeroes can use a larger size than
ordinary writes).

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1468607524-19021-5-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Fragment writes to max transfer length
Eric Blake [Fri, 15 Jul 2016 18:32:01 +0000 (12:32 -0600)]
block: Fragment writes to max transfer length

Drivers should be able to rely on the block layer honoring the
max transfer length, rather than needing to return -EINVAL
(iscsi) or manually fragment things (nbd).  We already fragment
write zeroes at the block layer; this patch adds the fragmentation
for normal writes, after requests have been aligned (fragmenting
before alignment would lead to multiple unaligned requests, rather
than just the head and tail).

When fragmenting a large request where FUA was requested, but
where we know that FUA is implemented by flushing all requests
rather than the given request, then we can still get by with
only one flush.  Note, however, that we need a followup patch
to the raw format driver to avoid a regression in the number of
flushes actually issued.

The return value was previously nebulous on success (sometimes
zero, sometimes the length written); since we never have a short
write, and since fragmenting may store yet another positive
value in 'ret', change the function to always return 0 on success,
matching what we do in bdrv_aligned_preadv().

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1468607524-19021-4-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoraw_bsd: Don't advertise flags not supported by protocol layer
Eric Blake [Fri, 15 Jul 2016 18:32:00 +0000 (12:32 -0600)]
raw_bsd: Don't advertise flags not supported by protocol layer

The raw format layer supports all flags via passthrough - but
it only makes sense to pass through flags that the lower layer
actually supports.

The next patch gives stronger reasoning for why this is correct.
At the moment, the raw format layer ignores the max_transfer
limit of its protocol layer, and an attempt to do the qemu-io
'w -f 0 40m' to an NBD server that lacks FUA will pass the entire
40m request to the NBD driver, which then fragments the request
itself into a 32m write, 8m write, and flush.  But once the block
layer starts honoring limits and fragmenting packets, the raw
driver will hand the NBD driver two separate requests; if both
requests have BDRV_REQ_FUA set, then this would result in a 32m
write, flush, 8m write, and second flush.  By having the raw
layer no longer advertise FUA support when the protocol layer
lacks it, we are back to a single flush at the block layer for
the overall 40m request.

Note that 'w -f -z 0 40m' does not currently exhibit the same
problem, because there, the fragmentation does not occur until
at the NBD layer (the raw layer has .bdrv_co_pwrite_zeroes, and
the NBD layer doesn't advertise max_pwrite_zeroes to constrain
things at the raw layer) - but the problem is latent and we
would again have too many flushes without this patch once the
NBD layer implements support for the new NBD_CMD_WRITE_ZEROES
command, if it sets max_pwrite_zeroes to the same 32m limit as
recommended by the NBD protocol.

Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1468607524-19021-3-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoblock: Fragment reads to max transfer length
Eric Blake [Fri, 15 Jul 2016 18:31:59 +0000 (12:31 -0600)]
block: Fragment reads to max transfer length

Drivers should be able to rely on the block layer honoring the
max transfer length, rather than needing to return -EINVAL
(iscsi) or manually fragment things (nbd).  This patch adds
the fragmentation in the block layer, after requests have been
aligned (fragmenting before alignment would lead to multiple
unaligned requests, rather than just the head and tail).

The return value was previously nebulous on success on whether
it was zero or the length read; and fragmenting may introduce
yet other non-zero values if we use the last length read.  But
as at least some callers are sloppy and expect only zero on
success, it is easiest to just guarantee 0.

[Fix uninitialized ret local variable in bdrv_aligned_preadv().
--Stefan]

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-id: 1468607524-19021-2-git-send-email-eblake@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160719' into...
Peter Maydell [Wed, 20 Jul 2016 11:48:18 +0000 (12:48 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20160719' into staging

target-arm queue:
 * fix two minor Coverity complaints

# gpg: Signature made Tue 19 Jul 2016 18:02:34 BST
# gpg:                using RSA key 0x3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>"
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20160719:
  arm_gicv3: Add assert()s to tell Coverity that offsets are aligned
  target-arm: Fix unreachable code in gicv3_class_name()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agousbredir: add streams property
Gerd Hoffmann [Wed, 13 Jul 2016 11:14:33 +0000 (13:14 +0200)]
usbredir: add streams property

Enabled by default, can be used to turn off (usb3) streams support.
xhci has a such a property too (same name, same default).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1468408474-17648-1-git-send-email-kraxel@redhat.com

8 years agoxhci: Fix possible side effect from assert()
Alexey Kardashevskiy [Mon, 18 Jul 2016 03:29:08 +0000 (13:29 +1000)]
xhci: Fix possible side effect from assert()

A static analysis tool called BEAM detected possible side effect from
assert() calling a helper which may change an XHCI ring after every call.

This moves xhci_ring_fetch() out of assert() so it will be called
with and without enabled debug.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-id: 1468812548-31868-1-git-send-email-aik@ozlabs.ru
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
8 years agodocker: pass EXECUTABLE to build script
Alex Bennée [Tue, 19 Jul 2016 13:20:45 +0000 (21:20 +0800)]
docker: pass EXECUTABLE to build script

To build a docker image with which needs qemu linux-user emulation we
need to pass --include-executable to the build script. Using the same
mechanism as for other container controls we enable the option is
EXECUTABLE is set on the make command line e.g:

    make docker-image-debian-bootstrap V=1 J=9 DEB_ARCH=armhf \
        DEB_TYPE=stable EXECUTABLE=./arm-linux-user/qemu-arm

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-11-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agodocker: Don't start a container that doesn't exist
Fam Zheng [Tue, 19 Jul 2016 13:20:44 +0000 (21:20 +0800)]
docker: Don't start a container that doesn't exist

Image building targets are dependencies of test running targets, so when
a docker image doesn't exist, it means it's skipped (due to dependency
checks in pre script). Therefore, skip the test too.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1468934445-32183-10-git-send-email-famz@redhat.com

8 years agodocker: Add "images" subcommand to docker.py
Fam Zheng [Tue, 19 Jul 2016 13:20:43 +0000 (21:20 +0800)]
docker: Add "images" subcommand to docker.py

This is a wrapper for the 'docker images' command.

Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-9-git-send-email-famz@redhat.com

8 years agodocker: Fix exit code if $CMD failed
Fam Zheng [Tue, 19 Jul 2016 13:20:42 +0000 (21:20 +0800)]
docker: Fix exit code if $CMD failed

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1468934445-32183-8-git-send-email-famz@redhat.com

8 years agodocker: More sensible run script
Fam Zheng [Tue, 19 Jul 2016 13:20:41 +0000 (21:20 +0800)]
docker: More sensible run script

It is very easy to figure out current directory and bash option from the
execution, so do less in the Makefile invocation command line, and
figure both options in the script.

This makes the next patch easier.

Signed-off-by: Fam Zheng <famz@redhat.com>
Message-id: 1468934445-32183-7-git-send-email-famz@redhat.com

8 years agotests/docker/docker.py: add update operation
Alex Bennée [Tue, 19 Jul 2016 13:20:40 +0000 (21:20 +0800)]
tests/docker/docker.py: add update operation

This adds a new operation to the docker script to allow updating of
binaries in an existing container. This is because it would be
inefficient to re-build the whole container just for an update to the
QEMU binary.

To update the executable run:

    ./tests/docker/docker.py update \
        debian:armhf ./arm-linux-user/qemu-arm

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-6-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agotests/docker/dockerfiles: new debian-bootstrap.docker
Alex Bennée [Tue, 19 Jul 2016 13:20:39 +0000 (21:20 +0800)]
tests/docker/dockerfiles: new debian-bootstrap.docker

Together with the debian-bootstrap.pre script can now build an arbitrary
architecture of Debian using debootstrap. This allows debootstrap to set
up its first stage before the container is built.

To build a container you need a command line like:

  DEB_ARCH=armhf DEB_TYPE=testing \
    ./tests/docker/docker.py build \
    --include-executable=arm-linux-user/qemu-arm debian:armhf \
    ./tests/docker/dockerfiles/debian-bootstrap.docker

Although a number of non-debian systems package the debootstrap script
it is fairly portable in itself. Assuming we have some sort of fakeroot
implementation we can just clone the upstream repository and use the
script from there.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-5-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agotests/docker/docker.py: check and run .pre script
Alex Bennée [Tue, 19 Jul 2016 13:20:38 +0000 (21:20 +0800)]
tests/docker/docker.py: check and run .pre script

The docker script will now search for an associated $dockerfile.pre
script which gets run in the same build context as the dockerfile will
be. This is to support pre-seeding the build context before running the
docker build.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-4-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agotests/docker/docker.py: support --include-executable
Alex Bennée [Tue, 19 Jul 2016 13:20:37 +0000 (21:20 +0800)]
tests/docker/docker.py: support --include-executable

When passed the path to a binary we copy it and any linked libraries (if
it is dynamically linked) into the docker build context. These can then
be included by a dockerfile with the line:

  # Copy all of context into container
  ADD . /

This is mainly intended for setting up foreign architecture docker
images which use qemu-$arch to do cross-architecture linux-user
execution. It also relies on the host and guest file-system following
reasonable multi-arch layouts so the copied libraries don't clash with
the guest ones.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 1468934445-32183-3-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agotests/docker/docker.py: docker_dir outside build
Alex Bennée [Tue, 19 Jul 2016 13:20:36 +0000 (21:20 +0800)]
tests/docker/docker.py: docker_dir outside build

Instead of letting the build_image create the temporary working dir we
move the creation to the build command. This is preparation for the
later patches where additional files can be added to the build context
before the build step is run.

We also ensure we remove the build context after we are done (mkdtemp
doesn't do this automatically for you).

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468934445-32183-2-git-send-email-famz@redhat.com
Signed-off-by: Fam Zheng <famz@redhat.com>
8 years agoMerge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160719-2' into...
Peter Maydell [Wed, 20 Jul 2016 10:32:12 +0000 (11:32 +0100)]
Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160719-2' into staging

linux-user fixes before 2.7 freeze, fix commit message

# gpg: Signature made Tue 19 Jul 2016 14:18:54 BST
# gpg:                using RSA key 0xB44890DEDE3C9BC0
# gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>"
# gpg:                 aka "Riku Voipio <riku.voipio@linaro.org>"
# Primary key fingerprint: FF82 03C8 C391 98AE 0581  41EF B448 90DE DE3C 9BC0

* remotes/riku/tags/pull-linux-user-20160719-2:
  linux-user: AArch64 has sync_file_range, not sync_file_range2
  linux-user: Fix type for SIOCATMARK ioctl
  linux-user: define missing sparc syscalls
  linux-user: Fix terminal control ioctls
  linux-user: Add some new blk ioctls
  linux-user: Handle short lengths in host_to_target_sockaddr()
  linux-user: Forget about synchronous signal once it is delivered
  linux-user: Correct type for LOOP_GET_STATUS{,64} ioctls
  linux-user: Correct type for BLKSSZGET
  linux-user: Add loop control ioctls
  linux-user: Check sigsetsize argument to syscalls
  linux-user: add nested netlink types
  linux-user: convert sockaddr_ll from host to target
  linux-user: add fd_trans helper in do_recvfrom()
  linux-user: fix netlink memory corruption
  linux-user: fd_trans_*_data() returns the length

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
8 years agoqxl: fix qxl_set_dirty call in qxl_dirty_one_surface
Gerd Hoffmann [Wed, 13 Jul 2016 12:33:06 +0000 (14:33 +0200)]
qxl: fix qxl_set_dirty call in qxl_dirty_one_surface

qxl_set_dirty() expects start and end as range specification.
qxl_dirty_one_surface passes 'size' instead of 'offset + size' as end
parameter.  Fix that.  Also use uint64_t everywhere while being at it.

Bug was added by "e25139b qxl: set only off-screen surfaces dirty instead
of the whole vram" and carried forward unnoticed by "5cdc402 qxl: fix
surface migration".

Reported-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-id: 1468413187-22071-1-git-send-email-kraxel@redhat.com

8 years agoblock/gluster: add support for multiple gluster servers
Prasanna Kumar Kalever [Tue, 19 Jul 2016 16:57:33 +0000 (22:27 +0530)]
block/gluster: add support for multiple gluster servers

This patch adds a way to specify multiple volfile servers to the gluster
block backend of QEMU with tcp|rdma transport types and their port numbers.

Problem:

Currently VM Image on gluster volume is specified like this:

file=gluster[+tcp]://host[:port]/testvol/a.img

Say we have three hosts in a trusted pool with replica 3 volume in action.
When the host mentioned in the command above goes down for some reason,
the other two hosts are still available. But there's currently no way
to tell QEMU about them.

Solution:

New way of specifying VM Image on gluster volume with volfile servers:
(We still support old syntax to maintain backward compatibility)

Basic command line syntax looks like:

Pattern I:
 -drive driver=gluster,
        volume=testvol,path=/path/a.raw,[debug=N,]
        server.0.type=tcp,
        server.0.host=1.2.3.4,
        server.0.port=24007,
        server.1.type=unix,
        server.1.socket=/path/socketfile

Pattern II:
 'json:{"driver":"qcow2","file":{"driver":"gluster",
       "volume":"testvol","path":"/path/a.qcow2",["debug":N,]
       "server":[{hostinfo_1}, ...{hostinfo_N}]}}'

   driver      => 'gluster' (protocol name)
   volume      => name of gluster volume where our VM image resides
   path        => absolute path of image in gluster volume
  [debug]      => libgfapi loglevel [(0 - 9) default 4 -> Error]

  {hostinfo}   => {{type:"tcp",host:"1.2.3.4"[,port=24007]},
                   {type:"unix",socket:"/path/sockfile"}}

   type        => transport type used to connect to gluster management daemon,
                  it can be tcp|unix
   host        => host address (hostname/ipv4/ipv6 addresses/socket path)
   port        => port number on which glusterd is listening.
   socket      => path to socket file

Examples:
1.
 -drive driver=qcow2,file.driver=gluster,
        file.volume=testvol,file.path=/path/a.qcow2,file.debug=9,
        file.server.0.type=tcp,
        file.server.0.host=1.2.3.4,
        file.server.0.port=24007,
        file.server.1.type=unix,
        file.server.1.socket=/var/run/glusterd.socket
2.
  'json:{"driver":"qcow2","file":{"driver":"gluster","volume":"testvol",
         "path":"/path/a.qcow2","debug":9,"server":
         [{"type":"tcp","host":"1.2.3.4","port":"24007"},
          {"type":"unix","socket":"/var/run/glusterd.socket"}
         ]}}'

This patch gives a mechanism to provide all the server addresses, which are in
replica set, so in case host1 is down VM can still boot from any of the
active hosts.

This is equivalent to the backup-volfile-servers option supported by
mount.glusterfs (FUSE way of mounting gluster volume)

credits: sincere thanks to all the supporters

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 1468947453-5433-6-git-send-email-prasanna.kalever@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agoblock/gluster: using new qapi schema
Prasanna Kumar Kalever [Tue, 19 Jul 2016 16:57:32 +0000 (22:27 +0530)]
block/gluster: using new qapi schema

this patch adds 'GlusterServer' related schema in qapi/block-core.json

[Jeff: minor fix-ups of comments and formatting, per patch reviews]

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1468947453-5433-5-git-send-email-prasanna.kalever@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agoblock/gluster: deprecate rdma support
Prasanna Kumar Kalever [Tue, 19 Jul 2016 16:57:31 +0000 (22:27 +0530)]
block/gluster: deprecate rdma support

gluster volfile server fetch happens through unix and/or tcp, it doesn't
support volfile fetch over rdma. The rdma code may actually mislead,
so to make sure things do not break, for now we fallback to tcp when requested
for rdma, with a warning.

If you are wondering how this worked all these days, its the gluster libgfapi
code which handles anything other than unix transport as socket/tcp, sad but
true.

Also gluster doesn't support ipv6 addresses, removing the ipv6 related
comments/docs section

[Jeff: Minor grammatical fixes in comments and commit message, per
review comments]

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1468947453-5433-4-git-send-email-prasanna.kalever@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agoblock/gluster: code cleanup
Prasanna Kumar Kalever [Tue, 19 Jul 2016 16:57:30 +0000 (22:27 +0530)]
block/gluster: code cleanup

unified coding styles of multiline function arguments and other error functions
moved random declarations of structures and other list variables

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1468947453-5433-3-git-send-email-prasanna.kalever@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agoblock/gluster: rename [server, volname, image] -> [host, volume, path]
Prasanna Kumar Kalever [Tue, 19 Jul 2016 16:57:29 +0000 (22:27 +0530)]
block/gluster: rename [server, volname, image] -> [host, volume, path]

A future patch will add support for multiple gluster servers. Existing
terminology is a bit unusual in relation to what names are used by
other networked devices, and doesn't map very well to the terminology
we expect to use for multiple servers.  Therefore, rename the following
options:
'server'  -> 'host'
'image'   -> 'path'
'volname' -> 'volume'

Signed-off-by: Prasanna Kumar Kalever <prasanna.kalever@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Jeff Cody <jcody@redhat.com>
Message-id: 1468947453-5433-2-git-send-email-prasanna.kalever@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: fix request throttling in drive-mirror
Denis V. Lunev [Wed, 22 Jun 2016 12:35:27 +0000 (15:35 +0300)]
mirror: fix request throttling in drive-mirror

There are 2 deficiencies here:
- mirror_iteration could start several requests inside. Thus we could
  simply have more in_flight requests than MAX_IN_FLIGHT.
- keeping this in mind throttling in mirror_run which is checking
  s->in_flight == MAX_IN_FLIGHT is wrong.

The patch adds the check and throttling into mirror_iteration and fixes
the check in mirror_run() to be sure.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 1466598927-5990-1-git-send-email-den@openvz.org
CC: Jeff Cody <jcody@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
(cherry picked from commit e648dc95c28fbca12e67be26a1fc4b9a0676c3fe)

8 years agomirror: improve performance of mirroring of empty disk
Denis V. Lunev [Thu, 14 Jul 2016 13:33:29 +0000 (16:33 +0300)]
mirror: improve performance of mirroring of empty disk

We should not take into account zero blocks for delay calculations.
They are not read and thus IO throttling is not required. In the
other case VM migration with 16 Tb QCOW2 disk with 4 Gb of data takes
days.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-9-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: efficiently zero out target
Denis V. Lunev [Thu, 14 Jul 2016 13:33:28 +0000 (16:33 +0300)]
mirror: efficiently zero out target

With a bdrv_co_write_zeroes method on a target BDS and when this method
is working as indicated by the bdrv_can_write_zeroes_with_unmap(), zeroes
will not be placed into the wire. Thus the target could be very efficiently
zeroed out. This should be done with the largest chunk possible.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-8-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: optimize dirty bitmap filling in mirror_run a bit
Denis V. Lunev [Thu, 14 Jul 2016 13:33:27 +0000 (16:33 +0300)]
mirror: optimize dirty bitmap filling in mirror_run a bit

There is no need to scan allocation tables if we have mark_all_dirty flag
set. Just mark it all dirty.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-7-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agoblock: remove extra condition in bdrv_can_write_zeroes_with_unmap
Denis V. Lunev [Thu, 14 Jul 2016 13:33:26 +0000 (16:33 +0300)]
block: remove extra condition in bdrv_can_write_zeroes_with_unmap

All .bdrv_co_write_zeroes callbacks nowadays work perfectly even
with backing store attached. If future new callbacks would be unable to do
that - they have a chance to block this in bdrv_get_info().

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-6-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: create mirror_dirty_init helper for mirror_run
Denis V. Lunev [Thu, 14 Jul 2016 13:33:25 +0000 (16:33 +0300)]
mirror: create mirror_dirty_init helper for mirror_run

The code inside the helper will be extended in the next patch. mirror_run
itself is overbloated at the moment.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy<vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-5-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
CC: Eric Blake <eblake@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: create mirror_throttle helper
Denis V. Lunev [Thu, 14 Jul 2016 13:33:24 +0000 (16:33 +0300)]
mirror: create mirror_throttle helper

The patch also places last_pause_ns from stack in mirror_run into
MirrorBlockJob structure. This helper will be useful in next patches.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1468503209-19498-4-git-send-email-den@openvz.org
CC: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
CC: Eric Blake <eblake@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <famz@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agomirror: make sectors_in_flight int64_t
Denis V. Lunev [Thu, 14 Jul 2016 13:33:23 +0000 (16:33 +0300)]
mirror: make sectors_in_flight int64_t

We keep here the sum of int fields. Thus this could easily overflow,
especially when we will start sending big requests in next patches.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-3-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agodirty-bitmap: operate with int64_t amount
Denis V. Lunev [Thu, 14 Jul 2016 13:33:22 +0000 (16:33 +0300)]
dirty-bitmap: operate with int64_t amount

Underlying HBitmap operates even with uint64_t. Thus this change is safe.
This would be useful f.e. to mark entire bitmap dirty in one call.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 1468503209-19498-2-git-send-email-den@openvz.org
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Jeff Cody <jcody@redhat.com>
Signed-off-by: Jeff Cody <jcody@redhat.com>
8 years agonet: Use correct type for bool flag
Eric Blake [Thu, 14 Jul 2016 03:50:24 +0000 (21:50 -0600)]
net: Use correct type for bool flag

is_netdev is only used as a bool, so make it one.

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1468468228-27827-14-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
8 years agoqapi: Change Netdev into a flat union
Eric Blake [Thu, 14 Jul 2016 03:50:23 +0000 (21:50 -0600)]
qapi: Change Netdev into a flat union

This is a mostly-mechanical conversion that creates a new flat
union 'Netdev' QAPI type that covers all the branches of the
former 'NetClientOptions' simple union, where the branches are
now listed in a new 'NetClientDriver' enum rather than generated
from the simple union.  The existence of a flat union has no
change to the command line syntax accepted for new code, and
will make it possible for a future patch to switch the QMP
command to parse a boxed union for no change to valid QMP; but
it does have some ripple effect on the C code when dealing with
the new types.

While making the conversion, note that the 'NetLegacy' type
remains unchanged: it applies only to legacy command line options,
and will not be ported to QMP, so it should remain a wrapper
around a simple union; to avoid confusion, the type named
'NetClientOptions' is now gone, and we introduce 'NetLegacyOptions'
in its place.  Then, in the C code, we convert from NetLegacy to
Netdev as soon as possible, so that the bulk of the net stack
only has to deal with one QAPI type, not two.  Note that since
the old legacy code always rejected 'hubport', we can just omit
that branch from the new 'NetLegacyOptions' simple union.

Based on an idea originally by Zoltán Kővágó <DirtY.iCE.hu@gmail.com>:
Message-Id: <01a527fbf1a5de880091f98cf011616a78adeeee.1441627176.git.DirtY.iCE.hu@gmail.com>
although the sed script in that patch no longer applies due to
other changes in the tree since then, and I also did some manual
cleanups (such as fixing whitespace to keep checkpatch happy).

Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <1468468228-27827-13-git-send-email-eblake@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[Fixup from Eric squashed in]
Signed-off-by: Markus Armbruster <armbru@redhat.com>