Hi,
With external processes or helpers participating to the VM support, it
becomes necessary to handle their migration. Various options exist to
transfer their state:
1) as the VM memory, RAM or devices (we could say that's how
vhost-user devices can be handled today, they are expected to
restore from ring state)
2) other "vmstate" (as with TPM emulator state blobs)
3) left to be handled by management layer
1) is not practical, since an external processes may legitimatelly
need arbitrary state date to back a device or a service, or may not
even have an associated device.
2) needs ad-hoc code for each helper, but is simple and working
3) is complicated for management layer, QEMU has the migration timing
The proposed "dbus-vmstate" object will connect to a given D-Bus
address, and save/load from org.qemu.VMState1 owners on migration.
Thus helpers can easily have their state migrated with QEMU, without
implementing ad-hoc support (such as done for TPM emulation)
D-Bus is ubiquitous on Linux (it is systemd IPC), and can be made to
work on various other OSes. There are several implementations and good
bindings for various languages. (the tests/dbus-vmstate-test.c is a
good example of how simple the implementation of services can be, even
in C)
dbus-vmstate is put into use by the libvirt series "[PATCH 00/23] Use
a slirp helper process".
v2:
- fix build with broken mingw-glib
-----BEGIN PGP SIGNATURE-----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=M4kD
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/elmarco/tags/dbus-vmstate7-pull-request' into staging
Add dbus-vmstate
Hi,
With external processes or helpers participating to the VM support, it
becomes necessary to handle their migration. Various options exist to
transfer their state:
1) as the VM memory, RAM or devices (we could say that's how
vhost-user devices can be handled today, they are expected to
restore from ring state)
2) other "vmstate" (as with TPM emulator state blobs)
3) left to be handled by management layer
1) is not practical, since an external processes may legitimatelly
need arbitrary state date to back a device or a service, or may not
even have an associated device.
2) needs ad-hoc code for each helper, but is simple and working
3) is complicated for management layer, QEMU has the migration timing
The proposed "dbus-vmstate" object will connect to a given D-Bus
address, and save/load from org.qemu.VMState1 owners on migration.
Thus helpers can easily have their state migrated with QEMU, without
implementing ad-hoc support (such as done for TPM emulation)
D-Bus is ubiquitous on Linux (it is systemd IPC), and can be made to
work on various other OSes. There are several implementations and good
bindings for various languages. (the tests/dbus-vmstate-test.c is a
good example of how simple the implementation of services can be, even
in C)
dbus-vmstate is put into use by the libvirt series "[PATCH 00/23] Use
a slirp helper process".
v2:
- fix build with broken mingw-glib
# gpg: Signature made Mon 06 Jan 2020 14:43:35 GMT
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* remotes/elmarco/tags/dbus-vmstate7-pull-request:
tests: add dbus-vmstate-test
tests: add migration-helpers unit
dockerfiles: add dbus-daemon to some of latest distributions
configure: add GDBUS_CODEGEN
Add dbus-vmstate object
util: add dbus helper unit
docs: start a document to describe D-Bus usage
vmstate: replace DeviceState with VMStateIf
vmstate: add qom interface to get id
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Replace DeviceState dependency with VMStateIf on vmstate API.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com>
Add an interface to get the instance id, instead of depending on
Device and qdev_get_dev_path().
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Commit aa57020774, by mistake used MachineClass::numa_mem_supported
to check if NUMA is supported by machine and also as unrelated change
set it to true for sbsa-ref board.
Luckily change didn't break machines that support NUMA, as the field
is set to true for them.
But the field is not intended for checking if NUMA is supported and
will be flipped to false within this release for new machine types.
Fix it:
- by using previously used condition
!mc->cpu_index_to_instance_props || !mc->get_default_cpu_node_id
the first time and then use MachineState::numa_state down the road
to check if NUMA is supported
- dropping stray sbsa-ref chunk
Fixes: aa57020774
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1576154936-178362-3-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Currently parse_numa_node() is always called from already numa
enabled context.
Drop unnecessary check if numa is supported.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1576154936-178362-2-git-send-email-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Rename Error ** parameter in check_only_migratable to common errp.
In device_set_realized:
- Move "if (local_err != NULL)" closer to error setters.
- Drop 'Error **local_errp': it doesn't save any LoCs, but it's very
unusual.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191205174635.18758-10-vsementsov@virtuozzo.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
We don't need Error **, as all callers pass local Error object, which
isn't used after the call. Use Error * instead.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191205174635.18758-5-vsementsov@virtuozzo.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
fit_load_fdt() passes @errp to fit_image_addr(), then recovers from
ENOENT failures. Passing @errp is wrong, because it works only as
long as @errp is neither @error_fatal nor @error_abort. Error
recovery dereferences @errp. That's also wrong; see the big comment
in error.h. Error recovery can leave *errp pointing to a freed
Error object. Wrong, it must be null on success. Messed up in
commit 3eb99edb48 "loader-fit: Wean off error_printf()".
No caller actually passes such values, or uses *errp on success.
Fix anyway: splice in a local Error *err, and error_propagate().
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20191204093625.14836-8-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
The first machine property to fall is Xen's Intel integrated graphics
passthrough. The "-machine igd-passthru" option does not set anymore
a property on the machine object, but desugars to a GlobalProperty on
accelerator objects.
The setter is very simple, since the value ends up in a
global variable, so this patch also provides an example before the more
complicated cases that follow it.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Drop the "accel" property from MachineState, and instead desugar
"-machine accel=" to a list of "-accel" options.
This has a semantic change due to removing merge_lists from -accel.
For example:
- "-accel kvm -accel tcg" all but ignored "-accel kvm". This is a bugfix.
- "-accel kvm -accel thread=single" ignored "thread=single", since it
applied the option to KVM. Now it fails due to not specifying the
accelerator on "-accel thread=single".
- "-accel tcg -accel thread=single" chose single-threaded TCG, while now
it will fail due to not specifying the accelerator on "-accel
thread=single".
Also, "-machine accel" and "-accel" become incompatible.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Virtio spec 1.1 (and earlier), 5.2.5.2 Driver Requirements: Device
Initialization:
"Devices SHOULD always offer VIRTIO_BLK_F_FLUSH, and MUST offer it if
they offer VIRTIO_BLK_F_CONFIG_WCE"
Currently F_CONFIG_WCE and F_WCE are not connected to each other.
Qemu will advertise F_CONFIG_WCE if config-wce argument is
set for virtio-blk device. And F_WCE is advertised only if
underlying block backend actually has it's caching enabled.
Fix this by advertising F_WCE if F_CONFIG_WCE is also advertised.
To preserve backwards compatibility with newer machine types make this
behaviour governed by "x-enable-wce-if-config-wce" virtio-blk-device
property and introduce hw_compat_4_2 with new property being off by
default for all machine types <= 4.2 (but don't introduce 4.3
machine type itself yet).
Signed-off-by: Evgeny Yakovlev <wrfsh@yandex-team.ru>
Message-Id: <1572978137-189218-1-git-send-email-wrfsh@yandex-team.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
If memory allocation fails when using -mem-path, QEMU is supposed to print
out a message to indicate that fallback to anonymous RAM is deprecated. This
is done with error_printf() which does output buffering. As a consequence,
the message is only printed at the next flush, eg. when quiting QEMU, and
it also lacks a trailing newline:
qemu-system-ppc64: unable to map backing store for guest RAM: Cannot allocate memory
qemu-system-ppc64: warning: falling back to regular RAM allocation
QEMU 4.1.50 monitor - type 'help' for more information
(qemu) q
This is deprecated. Make sure that -mem-path specified path has sufficient resources to allocate -m specified RAM amountgreg@boss02:~/Work/qemu/qemu-spapr$
Add the missing \n to fix both issues.
Fixes: cb79224b7e "deprecate -mem-path fallback to anonymous RAM"
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <157304440026.351774.14607704217028190097.stgit@bahia.lan>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Now all the users of ptimers have converted to the transaction-based
API, we can remove ptimer_init_with_bh() and all the code paths
that are used only by bottom-half based ptimers, and tidy up the
documentation comments to consider the transaction-based API the
only possibility.
The code changes result from:
* s->bh no longer exists
* s->callback is now always non-NULL
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191025142411.17085-1-peter.maydell@linaro.org
This function isn't used anymore.
This reverts commit 22ec3283ef.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Esteban Bosse <estebanbosse@gmail.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
-----BEGIN PGP SIGNATURE-----
iQEzBAABCgAdFiEEZoWumedRZ7yvyN81+9DbCVqeKkQFAl23BZMACgkQ+9DbCVqe
KkRPegf/QHygZ4ER2jOaWEookxiOEcik+dzQKVGNqLNXeMLvo5fGjGVpFoFxSgfv
ZvCAL4xbW44zsYlVfh59tfn4Tu9qK7s7/qM3WXpHsmuvEuhoWef0Lt2jSe+D46Rs
KeG/aX+rHLUR8rr9eCgE+1/MQmxPUj3VUonkUpNkk2ebBbSNoLSOudB4DD9Vcyl7
Pya1kPvA6W9bwI20ZSWihE7flg13o62Pp+LgAFLrsfxXOxOMkPrU8Pp+B0Dvr+hL
5Oh0clZLhiRi75x+KVGZ90TVsoftdjYoOWGMOudS/+NNmqKT1NTLm0K1WJYyRMQ1
V0ne4/OcGNq7x8gcOx/xs09ADu5/VA==
=UXR/
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging
TCG Plugins initial implementation
- use --enable-plugins @ configure
- low impact introspection (-plugin empty.so to measure overhead)
- plugins cannot alter guest state
- example plugins included in source tree (tests/plugins)
- -d plugin to enable plugin output in logs
- check-tcg runs extra tests when plugins enabled
- documentation in docs/devel/plugins.rst
# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* remotes/stsquad/tags/pull-tcg-plugins-281019-4: (57 commits)
travis.yml: enable linux-gcc-debug-tcg cache
MAINTAINERS: add me for the TCG plugins code
scripts/checkpatch.pl: don't complain about (foo, /* empty */)
.travis.yml: add --enable-plugins tests
include/exec: wrap cpu_ldst.h in CONFIG_TCG
accel/stubs: reduce headers from tcg-stub
tests/plugin: add hotpages to analyse memory access patterns
tests/plugin: add instruction execution breakdown
tests/plugin: add a hotblocks plugin
tests/tcg: enable plugin testing
tests/tcg: drop test-i386-fprem from TESTS when not SLOW
tests/tcg: move "virtual" tests to EXTRA_TESTS
tests/tcg: set QEMU_OPTS for all cris runs
tests/tcg/Makefile.target: fix path to config-host.mak
tests/plugin: add sample plugins
linux-user: support -plugin option
vl: support -plugin option
plugin: add qemu_plugin_outs helper
plugin: add qemu_plugin_insn_disas helper
plugin: expand the plugin_init function to include an info block
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In "b06424de62 migration: Disable hotplug/unplug during migration" we
added a check to disable unplug for all devices until we have figured
out what works. For failover primary devices qdev_unplug() is called
from the migration handler, i.e. during migration.
This patch adds a flag to DeviceState which is set to false for all
devices and makes an exception for PCI devices that are also
primary devices in a failover pair.
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Message-Id: <20191029114905.6856-8-jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This adds support for hiding a device to the qbus and qdev APIs. The
first user of this will be the virtio-net failover feature but the API
introduced with this patch could be used to implement other features as
well, for example hiding pci devices when a pci bus is powered off.
qdev_device_add() is modified to check for a failover_pair_id
argument in the option string. A DeviceListener callback
should_be_hidden() is added. It can be used by a standby device to
inform qdev that this device should not be added now. The standby device
handler can store the device options to plug the device in at a later
point in time.
One reason for hiding the device is that we don't want to expose both
devices to the guest kernel until the respective virtio feature bit
VIRTIO_NET_F_STANDBY was negotiated and we know that the devices will be
handled correctly by the guest.
More information on the kernel feature this is using:
https://www.kernel.org/doc/html/latest/networking/net_failover.html
An example where the primary device is a vfio-pci device and the standby
device is a virtio-net device:
A device is hidden when it has an "failover_pair_id" option, e.g.
-device virtio-net-pci,...,failover=on,...
-device vfio-pci,...,failover_pair_id=net1,...
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Message-Id: <20191029114905.6856-2-jfreimann@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Add MachineClass::auto_enable_numa field. When it is true, a NUMA node
is expected to be created implicitly.
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Suggested-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <20190905083238.1799-1-tao3.xu@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Provide the new transaction-based API. If a ptimer is created
using ptimer_init() rather than ptimer_init_with_bh(), then
instead of providing a QEMUBH, it provides a pointer to the
callback function directly, and has opted into the transaction
API. All calls to functions which modify ptimer state:
- ptimer_set_period()
- ptimer_set_freq()
- ptimer_set_limit()
- ptimer_set_count()
- ptimer_run()
- ptimer_stop()
must be between matched calls to ptimer_transaction_begin()
and ptimer_transaction_commit(). When ptimer_transaction_commit()
is called it will evaluate the state of the timer after all the
changes in the transaction, and call the callback if necessary.
In the old API the individual update functions generally would
call ptimer_trigger() immediately, which would schedule the QEMUBH.
In the new API the update functions will instead defer the
"set s->next_event and call ptimer_reload()" work to
ptimer_transaction_commit().
Because ptimer_trigger() can now immediately call into the
device code which may then call other ptimer functions that
update ptimer_state fields, we must be more careful in
ptimer_reload() not to cache fields from ptimer_state across
the ptimer_trigger() call. (This was harmless with the QEMUBH
mechanism as the BH would not be invoked until much later.)
We use assertions to check that:
* the functions modifying ptimer state are not called outside
a transaction block
* ptimer_transaction_begin() and _commit() calls are paired
* the transaction API is not used with a QEMUBH ptimer
There is some slight repetition of code:
* most of the set functions have similar looking "if s->bh
call ptimer_reload, otherwise set s->need_reload" code
* ptimer_init() and ptimer_init_with_bh() have similar code
We deliberately don't try to avoid this repetition, because
it will all be deleted when the QEMUBH version of the API
is removed.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-3-peter.maydell@linaro.org
Currently the ptimer design uses a QEMU bottom-half as its
mechanism for calling back into the device model using the
ptimer when the timer has expired. Unfortunately this design
is fatally flawed, because it means that there is a lag
between the ptimer updating its own state and the device
callback function updating device state, and guest accesses
to device registers between the two can return inconsistent
device state.
We want to replace the bottom-half design with one where
the guest device's callback is called either immediately
(when the ptimer triggers by timeout) or when the device
model code closes a transaction-begin/end section (when the
ptimer triggers because the device model changed the
ptimer's count value or other state). As the first step,
rename ptimer_init() to ptimer_init_with_bh(), to free up
the ptimer_init() name for the new API. We can then convert
all the ptimer users away from ptimer_init_with_bh() before
removing it entirely.
(Commit created with
git grep -l ptimer_init | xargs sed -i -e 's/ptimer_init/ptimer_init_with_bh/'
and three overlong lines folded by hand.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191008171740.9679-2-peter.maydell@linaro.org
Both, "rom->addr" and "addr" are derived from the binary image
that can be loaded with the "-kernel" paramer. The code in
rom_copy() then calculates:
d = dest + (rom->addr - addr);
and uses "d" as destination in a memcpy() some lines later. Now with
bad kernel images, it is possible that rom->addr is smaller than addr,
thus "rom->addr - addr" gets negative and the memcpy() then tries to
copy contents from the image to a bad memory location. This could
maybe be used to inject code from a kernel image into the QEMU binary,
so we better fix it with an additional sanity check here.
Cc: qemu-stable@nongnu.org
Reported-by: Guangming Liu
Buglink: https://bugs.launchpad.net/qemu/+bug/1844635
Message-Id: <20190925130331.27825-1-thuth@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
With the merge of notdirty handling into store_helper,
the last user of cpu->mem_io_vaddr was removed.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This adds a trace point which prints every loaded image. This includes
bios/firmware/kernel/initradmdisk/pcirom.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190613050937.124903-1-aik@ozlabs.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Introduce this new per-machine hook to give any machine class a chance
to do a sanity check on the to-be-hotplugged device as a sanity test.
This will be used for x86 to try to detect some illegal configuration
of devices, e.g., possible conflictions between vfio-pci and x86
vIOMMU.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20190916080718.3299-3-peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch fixes a possible integer overflow when we calculate
the total size of ELF segments loaded.
Reported-by: Coverity (CID 1405299)
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20190910124828.39794-1-sgarzare@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Using FLR becomes convenient in cases where resetting the bus is
impractical, for example, when debugging the behavior of individual
functions.
Signed-off-by: Julia Suvorova <jusual@redhat.com>
Message-Id: <20190820163005.1880-1-jusual@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When user doesn't request any explicit CPU model with libvirt or QEMU,
a machine type specific CPU model is picked. Currently there is no way
to determine what this QEMU built-in default is, so libvirt cannot
report this back to the user in the XML config.
This extends the "query-machines" QMP command so that it reports the
default CPU model typename for each machine.
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20190822100412.23746-1-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Move existing numa global numa_info (renamed as "nodes") into NumaState.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <20190809065731.9097-5-tao3.xu@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Move existing numa global have_numa_distance into NumaState.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Liu Jingqi <jingqi.liu@intel.com>
Suggested-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <20190809065731.9097-4-tao3.xu@intel.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Add struct NumaState in MachineState and move existing numa global
nb_numa_nodes(renamed as "num_nodes") into NumaState. And add variable
numa_support into MachineClass to decide which submachines support NUMA.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Igor Mammedov <imammedo@redhat.com>
Suggested-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Tao Xu <tao3.xu@intel.com>
Message-Id: <20190809065731.9097-3-tao3.xu@intel.com>
[ehabkost: include hw/boards.h again to fix build failures]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)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=KtI3
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/kraxel/tags/audio-20190821-pull-request' into staging
audio: second batch of -audiodev support, adding support for multiple backends.
# gpg: Signature made Wed 21 Aug 2019 09:40:37 BST
# gpg: using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg: aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg: aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901 FE7D 4CB6 D8EE D3E8 7138
* remotes/kraxel/tags/audio-20190821-pull-request:
audio: fix memory leak reported by ASAN
audio: use size_t where makes sense
audio: remove read and write pcm_ops
paaudio: fix playback glitches
audio: do not run each backend in audio_run
audio: remove audio_MIN, audio_MAX
paaudio: properly disconnect streams in fini_*
paaudio: do not move stream when sink/source name is specified
audio: audiodev= parameters no longer optional when -audiodev present
paaudio: prepare for multiple audiodev
audio: add audiodev properties to frontends
audio: add audiodev property to vnc and wav_capture
audio: basic support for multi backend audio
audio: reduce glob_audio_state usage
audio: Add missing fall through comments
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
First ppc and spapr pull request for qemu-4.2. Includes:
* Some TCG emulation fixes and performance improvements
* Support for the mffsl instruction in TCG
* Added missing DPDES SPR
* Some enhancements to the emulation of the XIVE interrupt
controller
* Cleanups to spapr MSI management
* Some new suspend/resume infrastructure and a draft suspend
implementation for spapr
* New spapr hypercall for TPM communication (will be needed for
secure guests under an Ultravisor)
* Fix several memory leaks
And a few other assorted fixes.
-----BEGIN PGP SIGNATURE-----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=E+7d
-----END PGP SIGNATURE-----
Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-4.2-20190821' into staging
ppc patch queue for 2019-08-21
First ppc and spapr pull request for qemu-4.2. Includes:
* Some TCG emulation fixes and performance improvements
* Support for the mffsl instruction in TCG
* Added missing DPDES SPR
* Some enhancements to the emulation of the XIVE interrupt
controller
* Cleanups to spapr MSI management
* Some new suspend/resume infrastructure and a draft suspend
implementation for spapr
* New spapr hypercall for TPM communication (will be needed for
secure guests under an Ultravisor)
* Fix several memory leaks
And a few other assorted fixes.
# gpg: Signature made Wed 21 Aug 2019 08:24:44 BST
# gpg: using RSA key 75F46586AE61A66CC44E87DC6C38CACA20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>" [full]
# gpg: aka "David Gibson (Red Hat) <dgibson@redhat.com>" [full]
# gpg: aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>" [full]
# gpg: aka "David Gibson (kernel.org) <dwg@kernel.org>" [unknown]
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E 87DC 6C38 CACA 20D9 B392
* remotes/dgibson/tags/ppc-for-4.2-20190821: (42 commits)
ppc: Fix emulated single to double denormalized conversions
ppc: Fix emulated INFINITY and NAN conversions
ppc: conform to processor User's Manual for xscvdpspn
ppc: Add support for 'mffsl' instruction
target/ppc: Add Directed Privileged Door-bell Exception State (DPDES) SPR
spapr/xive: Mask the EAS when allocating an IRQ
spapr: Implement better workaround in spapr-vty device
spapr/irq: Drop spapr_irq_msi_reset()
spapr/pci: Free MSIs during reset
spapr/pci: Consolidate de-allocation of MSIs
ppc: remove idle_timer logic
spapr: Implement ibm,suspend-me
i386: use machine class ->wakeup method
machine: Add wakeup method to MachineClass
ppc/xive: Improve 'info pic' support
ppc/xive: Provide silent escalation support
ppc/xive: Provide unconditional escalation support
ppc/xive: Provide escalation support
ppc/xive: Provide backlog support
ppc/xive: Implement TM_PULL_OS_CTX special command
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Move query-target and its return type TargetInfo from misc.json to
machine.json, where they are covered by MAINTAINERS section "Machine
core". Also move its implementation from arch_init.c to
hw/core/machine-qmp-cmds, where it is likewise covered.
All users of SysEmuTarget are now in machine.json. Move it there from
common.json.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190709152053.16670-3-armbru@redhat.com>
Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190709152053.16670-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Rebased onto merge commit 95a9457fd44; missed instances of qom/cpu.h
in comments replaced]
Finally add audiodev= options to audio frontends so users can specify
which backend to use when multiple backends exist. Not specifying an
audiodev= option currently causes the first audiodev to be used, this is
fixed in the next commit.
Example usage: -audiodev pa,id=foo -device AC97,audiodev=foo
Signed-off-by: Kővágó, Zoltán <DirtY.iCE.hu@gmail.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: d64db52dda2d0e9d97bc5ab1dd9adf724280fea1.1566168923.git.DirtY.iCE.hu@gmail.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add 4.2 machine types for arm/i440fx/q35/s390x/spapr.
For i440fx and q35, unversioned cpu models are still translated
to -v1, as 0788a56bd1 ("i386: Make unversioned CPU models be
aliases") states this should only transition to the latest cpu
model version in 4.3 (or later).
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20190724103524.20916-1-cohuck@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Commit 18269069c3 ("migration: Introduce ignore-shared capability")
addes ignore-shared capability to bypass the shared ramblock (e,g,
membackend + numa node). It does good to live migration.
As told by Yury,this commit expectes that QEMU doesn't write to guest RAM
until VM starts, but it does on aarch64 qemu:
Backtrace:
1 0x000055f4a296dd84 in address_space_write_rom_internal () at
exec.c:3458
2 0x000055f4a296de3a in address_space_write_rom () at exec.c:3479
3 0x000055f4a2d519ff in rom_reset () at hw/core/loader.c:1101
4 0x000055f4a2d475ec in qemu_devices_reset () at hw/core/reset.c:69
5 0x000055f4a2c90a28 in qemu_system_reset () at vl.c:1675
6 0x000055f4a2c9851d in main () at vl.c:4552
Actually, on arm64 virt marchine, ramblock "dtb" will be filled into ram
druing rom_reset. In ignore-shared incoming case, this rom filling
is not required since all the data has been stored in memory backend
file.
Further more, as suggested by Peter Xu, if we do rom_reset() now with
these ROMs then the RAM data should be re-filled again too with the
migration stream coming in.
Fixes: commit 18269069c3 ("migration: Introduce ignore-shared
capability")
Suggested-by: Yury Kotov <yury-kotov@yandex-team.ru>
Suggested-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Catherine Ho <catherine.hecx@gmail.com>
Acked-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This patch allows handling an ELF memory-mapped, taking care
the reference count of the GMappedFile* passed through
rom_add_elf_program().
In this case, the 'data' pointer is not heap-allocated, so
we cannot free it.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20190724143105.307042-2-sgarzare@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The generic loader device is completely optional. Let's add a proper
config switch for it so that people can disable it if they don't need
it and want to create a minimalistic QEMU binary.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190817101931.28386-9-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The "split-irq" device is currently only used by machines that use
CONFIG_ARMSSE. Let's add a proper CONFIG_SPLIT_IRQ switch for this
so that it only gets compiled when we really need it.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190817101931.28386-7-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
