This fixes the following crash:
$ qemu-system-x86_64 -global container.xxx=y
hw/core/qdev-properties-system.c:399:qdev_add_one_global: Object 0x7f7eff234100 is not an instance of type device
Aborted (core dumped)
New behavior will be to just warn, just like when non-existing clas
names are used:
$ qemu-system-x86_64 -global container.xxx=y
qemu-system-x86_64: Warning: "-global container.xxx=y" not used
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Tested-by: Don Slutz <dslutz@verizon.com>
It would be much better if we didn't terminate QEMU inside
device_post_init(), but at least exiting cleanly is better than aborting
and dumping core.
Before this patch:
$ qemu-system-x86_64 -global cpu.xxx=y
qemu-system-x86_64: Property '.xxx' not found
Aborted (core dumped)
After this patch:
$ qemu-system-x86_64 -global cpu.xxx=y
qemu-system-x86_64: Property '.xxx' not found
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-By: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Both 'indirect_desc' and 'event_idx' are bus independent features,
and they should be enabled for mmio devices too.
On arm64 quad core VM(qemu-kvm), the patch can increase block I/O
performance a lot with latest linux tree:
- without the patch: 14K IOPS
- with the patch: 34K IOPS
fio script:
[global]
direct=1
bsrange=4k-4k
timeout=10
numjobs=4
ioengine=libaio
iodepth=64
filename=/dev/vdc
group_reporting=1
[f1]
rw=randread
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reported-by: Sergey Fionov <fionov@gmail.com>
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
In function do_pci_register_device() in file hw/pci/pci.c, move the assignment
of pci_dev->devfn to the position before the call to
pci_device_iommu_address_space(pci_dev) which will use the value of
pci_dev->devfn.
Fixes: 9eda7d373e
pci: Introduce helper to retrieve a PCI device's DMA address space
Cc: qemu-stable@nongnu.org
Signed-off-by: Le Tan <tamlokveer@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The two common virtio features can be defined per bus, so move all
into bus class device to make code more clean.
As discussed with cornelia, s390-virtio-blk doesn't support
the two features at all, so keep s390-virtio as it.
Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com> #for s390 ccw
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
MST: rebase and resolve conflicts
fixes QEMU abort in case it's started without memory
hotplug enabled.
as result of fix it will print following messages:
"
-device pc-dimm,id=d1,memdev=m1: memory hotplug is not enabled, enable it on startup
-device pc-dimm,id=d1,memdev=m1: Device 'pc-dimm' could not be initialized
"
Also fixup assert condition to detect hotplug address
space overflow.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reported-by: Hu Tao <hutao@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Shut up Coverity's complaint about unchecked fcntl return values,
and especially make the code simpler and more efficient.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging
Block pull request
# gpg: Signature made Tue 01 Jul 2014 09:47:15 BST using RSA key ID 81AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>"
* remotes/stefanha/tags/block-pull-request: (23 commits)
block: add backing-file option to block-stream
block: extend block-commit to accept a string for the backing file
block: add helper function to determine if a BDS is in a chain
block: add QAPI command to allow live backing file change
qapi: Change back sector-count to sectors-count in quorum QAPI events.
block/cow: Avoid use of uninitialized cow_bs in error path
block: simplify bdrv_find_base() and bdrv_find_overlay()
block: make 'top' argument to block-commit optional
iotests: Add more tests to quick group
iotests: Add qemu tests to quick group
iotests: Simplify qemu-iotests-quick.sh
qemu-img create: add 'nocow' option
virtio-blk: remove need for explicit x-data-plane=on option
qdev: drop iothread property type
virtio-blk: replace x-iothread with iothread link property
virtio-blk: move qdev properties into virtio-blk.c
virtio: fix virtio-blk child refcount in transports
virtio-blk: drop virtio_blk_set_conf()
virtio-blk: use aliases instead of duplicate qdev properties
qdev: add qdev_alias_all_properties()
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If libusb_get_device_list() fails, the uninitialized local variable
libusb_device would be passed to libusb_free_device_list(), that
will cause a crash, like:
(gdb) bt
#0 0x00007fbbb4bafc10 in pthread_mutex_lock () from /lib64/libpthread.so.0
#1 0x00007fbbb233e653 in libusb_unref_device (dev=0x6275682d627375)
at core.c:902
#2 0x00007fbbb233e739 in libusb_free_device_list (list=0x7fbbb6e8436e,
unref_devices=<optimized out>) at core.c:653
#3 0x00007fbbb6cd80a4 in usb_host_auto_check (unused=unused@entry=0x0)
at hw/usb/host-libusb.c:1446
#4 0x00007fbbb6cd8525 in usb_host_initfn (udev=0x7fbbbd3c5670)
at hw/usb/host-libusb.c:912
#5 0x00007fbbb6cc123b in usb_device_init (dev=0x7fbbbd3c5670)
at hw/usb/bus.c:106
...
So initialize libusb_device at the begin time.
Signed-off-by: Jincheng Miao <jmiao@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Due to an incomplete initialization, adding a usb-bt-dongle device through HMP
or QMP will cause a segmentation fault.
Signed-off-by: Hani Benhabiles <hani@linux.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Guest mouse pointer was jumpy, when moving host mouse in the vertical direction (see bug #1327800).
Signed-off-by: Christian Burger <christian@krikkel.de>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
* remotes/bonzini/memory:
qdev: correctly send DEVICE_DELETED for recursively-deleted devices
memory: do not give a name to the internal exec.c regions
memory: MemoryRegion: Add size property
memory: MemoryRegion: Add may-overlap and priority props
memory: MemoryRegion: Add container and addr props
memory: MemoryRegion: replace owner field with QOM parent
memory: MemoryRegion: QOMify
memory: MemoryRegion: use /machine as default owner
libqtest: escape strings in QMP commands, fix leak
qom: object: Ignore refs/unrefs of NULL
qom: object: remove parent pointer when unparenting
mc146818rtc: add "rtc-time" link to "/machine/rtc"
qom: allow creating an alias of a child<> property
qom: add a generic mechanism to resolve paths
qom: add object_property_add_alias()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* remotes/bonzini/scsi-next:
configure: Fix -lm test, so that tools can be compiled on hosts that require -lm
virtio-scsi: scsi events must be converted to target endianness
virtio-scsi: virtio_scsi_push_event() lacks VirtIOSCSIReq parsing
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When a device is unparented (i.e. made completely hidden from management)
we want to send a DEVICE_DELETED event only if the device actually was
realized. This avoids raising DEVICE_DELETED events when device_add
fails.
However, this does not work right for recursively-deleted
devices: the whole tree is _first_ unrealized, _then_ unparented.
Then device_unparent sees realized==false and fails to trigger
the event. The solution is simply to move have_realized into
the DeviceState struct. If device_add fails, we never set the
new field to true and DEVICE_DELETED is not sent.
Fixes qemu-iotests testcase 067 (broken by commit 5942a19, though that
commit in turn fixed a possible segfault in the same test).
Reported-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a link to rtc under /machine providing a stable
location for management apps to query the value of the
time. The link should be added by any object that sends
RTC_TIME_CHANGE events.
{"execute":"qom-get","arguments":{"path":"/machine","property":"rtc-time"} }
Suggested by Paolo Bonzini and Andreas Faerber.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Virtio SCSI Events need to be byteswapped before being pushed
when host and guest have a different endianness. Not doing so
breaks hotplug of virtio scsi disks, with the following error
message being printed in the guest console:
virtio_scsi: Unsupport virtio scsi event 1000000
This issue got uncovered while testing disk hotplug with a PowerKVM
ppc64le guest. I have checked that this issue also affects a x86_64
guest run on a ppc64 host.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
[ Ported from PowerKVM,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Hotplug of a virtio scsi disk is currently broken: no disk appears in the
guest (verified with a fedora 20 host running a fedora 20 guest with KVM).
Bisect leeds to Paolo's patches to support any_layout, especially this
commit:
commit 36b15c79aa
Author: Paolo Bonzini <pbonzini@redhat.com>
Date: Tue Jun 10 16:21:18 2014 +0200
virtio-scsi: start preparing for any_layout
It modifies virtio_scsi_pop_req() so that it is up to the callers to parse
the virtio scsi request. It seems that virtio_scsi_push_event() was not
modified accordingly...
This patch adds a call to virtio_scsi_parse_req(). It also drops some
sanity checks that are already performed by virtio_scsi_parse_req().
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The x-data-plane=on|off option is no longer useful because the
iothread=<iothread> option conveys the same information plus which
IOThread to use.
Do not delete x-data-plane=on|off yet as a convenience to people using
this legacy experimental option. We will drop it in QEMU 2.2.
Instead, turn on data-plane when either x-data-plane=on or
iothread=<iothread> are used. The following command-line uses
data-plane:
qemu -device virtio-blk-pci,iothread=foo,drive=drive0
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Up until now -device virtio-blk-pci,x-iothread=<id> was used to assign
an IOThread. This was a temporary solution while we cleaned up QOM link
properties.
This patch switches over to a QOM link property since it is now possible
to restrict the setter to unrealized instances and automatically unref
the IOThread when the virtio-blk-pci device is freed.
Since the "iothread" property is a QOM property and not a qdev property,
we must alias it explicitly for virtio-blk-pci, as well as CCW and
s390-virtio.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
There is no need to make DEFINE_VIRTIO_BLK_PROPERTIES() public. Inline
it into virtio-blk.c so it cannot be used by mistake from other source
files.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
object_initialize() leaves the object with a refcount of 1.
object_property_add_child() adds its own reference which is dropped
again when the property is deleted.
The upshot of this is that we always have a refcount >= 1. Upon hot
unplug the virtio-blk child is not finalized!
Drop our reference after the child property has been added to the
parent.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
This function is no longer used since parent objects now use child
aliases to set the VirtIOBlkConf directly.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
virtio-blk-pci, virtio-blk-s390, and virtio-blk-ccw all duplicate the
qdev properties of their VirtIOBlock child. This approach does not work
well with string or pointer properties since we must be careful about
leaking or double-freeing them.
Use the QOM alias property to forward property accesses to the
VirtIOBlock child. This way no duplication is necessary.
Remember to stop calling virtio_blk_set_conf() so that we don't clobber
the values already set on the VirtIOBlock instance.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The qdev_alias_all_properties() function creates QOM alias properties
for each qdev property on a DeviceState. This is useful for parent
objects that wish to forward property accesses to their children.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Move the x-data-plane property. Originally it was outside since not
every transport may wish to support dataplane. But that makes little
sense when we have a dedicated CONFIG_VIRTIO_BLK_DATA_PLANE ifdef
already.
This move makes it easier to switch to property aliases in the next
patch.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
If the virtio transport does not support notifiers (like s390-virtio),
we can't use dataplane. Bail out early and let the user know what is
wrong.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
As a prequel to any big Pin refactoring plans, do an in-place conversion
of qemu_irq to an Object, so that we can reference it in link<> properties.
Signed-off-by: Andreas Färber <afaerber@suse.de>
[ PC Changes:
* Removed array-alloctor ref counting logic (limit changes just to
* single IRQ allocator)
* Removed WIP marking from subject line
]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Allocate each IRQ individually on array allocations. This prepares for
QOMification of IRQs, where pointers to individual IRQs may be taken
and handed around for usage as QOM Links. The g_renew() scheme used here
is too fragile and would break all existing links should an IRQ list
be extended.
We now have to pass the IRQ count to qemu_free_irqs(). We have so few
call sites however, so this change is reasonably trivial.
Cc: agarcia@igalia.com
Cc: mst@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alberto Garcia <agarcia@igalia.com>
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
Replace qemu_allocate_irqs(foo, bar, 1)[0]
with qemu_allocate_irq(foo, bar, 0).
This avoids leaking the dereferenced qemu_irq *.
Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
[PC Changes:
* Applied change to instance in sh4/sh7750.c
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Kirill Batuzov <batuzovk@ispras.ru>
[AF: Fix IRQ index in sh4/sh7750.c]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
It does a g_free() on the pointer, so don't pass a local &foo reference.
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
io-error is for block device errors; it should always be preceded
by a BLOCK_IO_ERROR event. I think vfio wants to use
RUN_STATE_INTERNAL_ERROR instead.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Slow BAR access path is used when VFIO fails to mmap() BAR.
Since this is just a transport between the guest and a device, there is
no need to do endianness swapping.
This changes BARs to use native endianness. Since non-ROM BARs were
doing byte swapping, we need to remove it so does the patch.
As the result, this eliminates cancelling byte swaps and there is
no change in behavior for non-ROM BARs.
ROM BARs were declared little endian too but byte swapping was not
implemented for them so they never actually worked on big endian systems
as there was no cancelling byte swap. This fixes endiannes for ROM BARs
by declaring them native endian and only fixing access sizes as it is
done for non-ROM BARs.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
There are still old guests out there that over-exercise MSI-X masking.
The current code completely sets-up and tears-down an MSI-X vector on
the "use" and "release" callbacks. While this is functional, it can
slow an old guest to a crawl. We can easily skip the KVM parts of
this so that we keep the MSI route and irqfd setup. We do however
need to switch VFIO to trigger a different eventfd while masked.
Actually, we have the option of continuing to use -1 to disable the
trigger, but by using another EventNotifier we can allow the MSI-X
core to emulate pending bits and re-fire the vector once unmasked.
MSI code gets updated as well to use the same setup and teardown
structures and functions.
Prior to this change, an igbvf assigned to a RHEL5 guest gets about
20Mbps and 50 transactions/s with netperf (remote or VF->PF). With
this change, we get line rate and 3k transactions/s remote or 2Gbps
and 6k+ transactions/s to the PF. No significant change is expected
for newer guests with more well behaved MSI-X support.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
* remotes/bonzini/small-fixes:
tests/test-qmp-event: fix for GLib < 2.31
serial: poll the serial console with G_IO_HUP
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
On FreeBSD polling a master pty while the other end is not connected
with G_IO_OUT only results in an endless wait. This is different from
the Linux behaviour, that returns immediately. In order to demonstrate
this, I have the following example code:
http://xenbits.xen.org/people/royger/test_poll.c
When executed on Linux:
$ ./test_poll
In callback
On FreeBSD instead, the callback never gets called:
$ ./test_poll
So, in order to workaround this, poll the source with G_IO_HUP (which
makes the code behave the same way on both Linux and FreeBSD).
Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Cc: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Cc: Michael Tokarev <mjt@tls.msk.ru>
Cc: "Andreas Färber" <afaerber@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: xen-devel@lists.xenproject.org
[Add hw/char/cadence_uart.c too. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
SysBusDevice::init is deprecated. Convert to instance_init
as prescribed by QOM conventions.
Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-id: 1223f14833159b9ea5c57734dd2ffa88d4b15a83.1403583596.git.alistair.francis@xilinx.com
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The pxa2xx-gpio device has a VMStateDescription, but it was accidentally
never actually registered, and it wasn't quite correct. Remove the
'lines' field (this is a device property, not mutable state), add the
missing 'prev_level' field, and set dc->vmsd so it actually gets used.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The PXA2xx GPIO GPSR and GPCR registers are write-only, with reads being
undefined behaviour. Instead of having GPCR return 31337 and GPSR return
the value last written, make both log the guest error and return 0.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The VMStateDescription structs for the GPIO and PPC devices were
accidentally never wired up. Add missing state fields and register
them via dc->vmsd.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
The StrongARM GPIO GPSR and GPCR registers are write-only, with reads being
undefined behaviour. Instead of having GPCR return 31337 and GPSR return
the value last written, make both log the guest error and return 0.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
UEFI mandates that the platform must include an RTC, so provide
one in 'virt', using the PL031. This is also useful for directly
booting Linux kernels which would otherwise have to run ntpdate.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Aurelien Jarno <aurelien@aurel32.net>
As of today, vhost assumes guest and host have the same endianness.
This is definitely not compatible with modern PPC64 and ARM that
can change endianness at runtime. Let's disable vhost-net and print
an error message when we detect such a case:
qemu-system-ppc64: vhost-net does not support cross-endian
qemu-system-ppc64: unable to start vhost net: 38: falling back on userspace virtio
This way users can continue to run VMs without changing their setup and
have a chance to know that performance will be impacted.
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We also fix max_nr_ports at reset time as the device endianness may have
changed.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
fix max_nr_ports at reset time,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
converted new tswap locations to virtio_tswap,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Note that st*_raw and ld*_raw are effectively replaced by st*_p and ld*_p.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
[ pass VirtIODevice * to memory accessors,
converted new tswap locations to virtio_tswap,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Quoting original text from Rusty: "This is based on a simpler patch by Anthony
Liguouri".
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
[ add VirtIODevice * argument to most helpers,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Some CPU families can dynamically change their endianness. This means we
can have little endian ppc or big endian arm guests for example. This has
an impact on legacy virtio data structures since they are target endian.
We hence introduce a new property to track the endianness of each virtio
device. It is reasonnably assumed that endianness won't change while the
device is in use : we hence capture the device endianness when it gets
reset.
We migrate this property in a subsection, after the device descriptor. This
means the load code must not rely on it until it is restored. As a consequence,
the vring sanity checks had to be moved after the call to vmstate_load_state().
We enforce paranoia by poisoning the property at the begining of virtio_load().
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We currently have a virtio_is_big_endian() helper that provides the target
endianness to the virtio code. As of today, the helper returns a fixed
compile-time value. Of course, this will have to change if we want to
support target endianness changes at run-time.
Let's move the TARGET_WORDS_BIGENDIAN bits out to a new helper and have
virtio_is_big_endian() implemented on top of it.
This patch doesn't change any functionality.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
There is a need to add some more fields to VirtIODevice that should be
migrated (broken status, endianness). The problem is that we do not
want to break compatibility while adding a new feature... This issue has
been addressed in the generic VMState code with the use of optional
subsections. As a *temporary* alternative to port the whole virtio
migration code to VMState, this patch mimics a similar subsectionning
ability for virtio, using the VMState code.
Since each virtio device is streamed in its own section, the idea is to
stream subsections between the end of the device section and the start
of the next sections. This allows an older QEMU to complain and exit
when fed with subsections:
Unknown savevm section type 5
load of migration failed
Suggested-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
While we are here, we also check virtio_load() return value.
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In order to migrate virtio subsections, they should be streamed after
the device itself. We need the device specific code to be called from
the common migration code to achieve this. This patch introduces load
and save methods for this purpose.
Suggested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The device configuration is set at realize time and never changes. It
should not be migrated as it is done today. For the sake of compatibility,
let's just skip them at load time.
Signed-off-by: Alexander Graf <agraf@suse.de>
[ added missing casts to uint16_t *,
added From, SoB and commit message,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
TCP connectivity fails when the guest has a different endianness.
The packets are silently dropped on the host by the tap backend
when they are read from user space because the endianness of the
virtio-net header is in the wrong order. These lines may appear
in the guest console:
[ 454.709327] skbuff: bad partial csum: csum=8704/4096 len=74
[ 455.702554] skbuff: bad partial csum: csum=8704/4096 len=74
The issue that got first spotted with a ppc64le PowerKVM guest,
but it also exists for the less common case of a x86_64 guest run
by a big-endian ppc64 TCG hypervisor.
Signed-off-by: Cédric Le Goater <clg@fr.ibm.com>
[ Ported from PowerKVM,
Greg Kurz <gkurz@linux.vnet.ibm.com> ]
Signed-off-by: Greg Kurz <gkurz@linux.vnet.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Old code was affected by memory gaps which resulted in buffer pointers
pointing to address outside of the mapped regions.
Here we are introducing following changes:
- new function qemu_get_ram_block_host_ptr() returns host pointer
to the ram block, it is needed to calculate offset of specific
region in the host memory
- new field mmap_offset is added to the VhostUserMemoryRegion. It
contains offset where specific region starts in the mapped memory.
As there is stil no wider adoption of vhost-user agreement was made
that we will not bump version number due to this change
- other fileds in VhostUserMemoryRegion struct are not changed, as
they are all needed for usermode app implementation
- region data is not taken from ram_list.blocks anymore, instead we
use region data which is alredy calculated for use in vhost-net
- Now multiple regions can have same FD and user applicaton can call
mmap() multiple times with the same FD but with different offset
(user needs to take care for offset page alignment)
Signed-off-by: Damjan Marion <damarion@cisco.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>
Commit 'virtio: validate config_len on load' restricted config_len
loaded from the wire to match the config_len that the device had.
Unfortunately, there are cases where this isn't true, the one
we found it on was the wce addition in virtio-blk.
Allow mismatched config-lengths:
*) If the version on the wire is shorter then fine
*) If the version on the wire is longer, load what we have space
for and skip the rest.
(This is mst@redhat.com's rework of what I originally posted)
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU 2.0 changed memory layout for isapc and pc-0.10 to pc-0.13.
This prevents migration from QEMU 1.7.0 for these
machine types when -m 3.5G is specified.
Paolo Bonzini asked that:
smbios_legacy_mode = true;
has_reserved_memory = false;
option_rom_has_mr = true;
rom_file_has_mr = false;
also be done.
Cc: qemu-stable@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Don Slutz <dslutz@verizon.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes: https://bugs.launchpad.net/qemu/+bug/1334307
Tested-by: "Slutz, Donald Christopher" <dslutz@verizon.com>
It is necessary to reset RTC interrupt reinjection backlog if
guest time is synchronized via a different mechanism, such as
QGA's guest-set-time command.
Failing to do so causes both corrections to be applied (summed),
resulting in an incorrect guest time.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
For each compat property on PC_Q35_COMPAT_*, there are only two
possibilities:
* If the device is never instantiated when using a machine other than
pc-q35, then the compat property can be safely added to
PC_COMPAT_*;
* If the device can be instantiated when using a machine other than
pc-q35, that means the other machines also need the compat property
to be set.
That means we don't need separate PC_Q35_COMPAT_* macros at all, today.
The hpet.hpet-intcap case is interesting: piix and q35 do have something
that emulates different defaults, but the machine-specific default is
applied _after_ compat_props are applied, by simply checking if the
property is zero (which is the real default on the hpet code).
The hpet.hpet-intcap=0x4 compat property can (should?) be applied to
piix too, because 0x4 was the default on both piix and q35 before the
hpet-intcap property was introduced.
Now, if one day we change the default HPET intcap on one of the PC
machine-types again, we may want to introduce PC_{Q35,I440FX}_COMPAT
macros. But while we don't need that, we can keep the code simple.
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Cc: Liu Ping Fan <pingfank@linux.vnet.ibm.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging
Block patches for 2.1.0-rc0
# gpg: Signature made Fri 27 Jun 2014 19:50:32 BST using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream: (47 commits)
iotests: Fix 083 for out-of-tree builds
iotests: Drop Python version from 065's Shebang
iotests: Use $PYTHON for Python scripts
iotests: Source common.env
configure: Enable out-of-tree iotests
iotests: Allow out-of-tree run
block.c: Don't return success for bdrv_append_temp_snapshot() failure
qemu-iotests: Add TestRepairQuorum to 041 to test drive-mirror node-name mode.
block: Add replaces argument to drive-mirror
blockjob: Fix recent BLOCK_JOB_ERROR regression
blockjob: Fix recent BLOCK_JOB_READY regression
virtio-blk: Rename complete_request_early to complete_request_vring
virtio-blk: Unify {non-,}dataplane's request handlings
virtio-blk: Schedule BH in the right context
virtio-blk: Export request handling functions to dataplane
virtio-blk: Make request completion function virtual
block: acquire AioContext in qmp_query_blockstats()
block: make bdrv_query_stats() static
virtio-blk: Fix and clean up the in_sg and out_sg check
virtio-blk: Fill in VirtIOBlockReq.out in dataplane code
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* remotes/qmp-unstable/queue/qmp:
docs/qmp: Fix documentation of BLOCK_JOB_READY to match code
char: report frontend open/closed state in 'query-chardev'
virtio-serial: report frontend connection state via monitor
qmp: add qmp-events.txt back
qapi event: clean up in callers
qapi script: clean up in scripts
qapi: ignore generated event files
qapi: move event defines
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Provide a simple bootloader code at the reset address that jumps to the
loaded image entry point when it's not equal to the reset address. This
is needed because the old method of setting pc doesn't work due to cpu
reset done after the machine setup.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
While at it rename lx60 (named after the first board of the family) to
more generic xtfpga (the family name).
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
On KC705 bootloader area is located at FLASH offset 0x06000000, not 0 as
on older xtfpga boards.
Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
The old name is misleading in its new usage, so rename it.
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This drops request handling code from dataplane, and uses code from
hw/block/virtio-blk.c.
It starts to use multiwrite as non-dataplane does.
Dataplane sets VirtIOBlock.complete_request to vring version, and calls
into non-dataplane's process handling. In complete_request_early,
qiov.size is added to vring push length, because it's also called in rw
completion now.
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The BH must be called in the AioContext of bs. Currently it is only the
main loop, but with coming changes, it could also be a dataplane
IOThread.
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
So that dataplane can use virtio_blk_handle_request and
virtio_submit_multiwrite.
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
virtio_blk_req_complete will call VirtIOBlock.complete_request() to push
data and notify guest. No functional change.
Later, this will allow dataplane to provide it's own (vring_) version.
Signed-off-by: Fam Zheng <famz@redhat.com>
Tested-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
out_sg is checked by iov_to_buf below, so it can be dropped.
Add assert and iov_discard_back around in_sg, as the in_sg is handled in
dataplane code.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
VirtIOBlockReq is allocated in process_request, and freed in command
functions.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The virtio code currently assumes that the outhdr is in its own iovec.
This is not guaranteed by the spec, so we should relax this assumption.
Convert the VirtIOBlockReq.out field to structrue so that we can use
iov_to_buf and then discard the header from the beginning of iovec.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
In current virtio spec, inhdr is a single byte, and is unlikely to
change for both functionality and compatibility considerations.
Non-dataplane uses .in, and we are on the way to converge them. So
let's unify it to get cleaner code.
Remove .inhdr and use .in.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Field "inhdr" is added temporarily for a more mechanical change, and
will be dropped in the next commit.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Since it's set but not used.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The block layer will handle the unaligned request.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This will make converging with dataplane code easier.
Add virtio_blk_free_request to handle the freeing of request internal
fields.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
For later reusing by dataplane code.
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Libvirt wants to know about the guest-side connection state of some
virtio-serial ports (in particular the one(s) assigned to guest agent(s)).
Report such states with a new monitor event.
RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=1080376
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
This patch improves docs and address small issues in event
callers.
Signed-off-by: Wenchao Xia <wenchaoqemu@gmail.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Luiz Capitulino <lcapitulino@redhat.com>
Eduardo Habkost