After qemu_iovec_destroy, the QEMUIOVector's size is zeroed and
the zero size ultimately is used to compute virtqueue_push's len
argument. Therefore, reads from virtio-blk devices did not
migrate their results correctly. (Writes were okay).
Save the size in virtio_blk_handle_request, and use it when the request
is completed.
Based on a patch by Wen Congyang.
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Message-id: 1427997044-392-1-git-send-email-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Commit 89b516d8b9 ("glib: add
compatibility interface for g_get_monotonic_time()") aimed
at making qemu build with old glib versions. At least SLES11SP3,
however, contains a backport of g_get_monotonic_time() while
keeping the reported glib version at 2.22.
Let's work around this by a strategically placed #define.
Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Message-id: 1427987865-433-2-git-send-email-cornelia.huck@de.ibm.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Since the BSP bit is writable on real hardware, during reset all the CPUs which
were not chosen to be the BSP should have their BSP bit cleared. This fix is
required for KVM to work correctly when it changes the BSP bit.
An additional fix is required for QEMU tcg to allow software to change the BSP
bit.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il>
Message-Id: <1427932716-11800-1-git-send-email-namit@cs.technion.ac.il>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
If QEMU forks after the CPU threads have been created, qemu_mutex_lock_iothread
will not be able to do qemu_cpu_kick_thread. There is no solution other than
assuming that forks after the CPU threads have been created will end up in an
exec. Forks before the CPU threads have been created (such as -daemonize)
have to call rcu_after_fork manually.
Notably, the oxygen theme for GTK+ forks and shows a "No such process" error
without this patch.
This patch can be reverted once the iothread loses the "kick the TCG thread"
magic.
User-mode emulation does not use the iothread, so it can also call
rcu_after_fork.
Reported by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Tested by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Capture the explicit setting of "usb=no" into a separate bool, and
use it to skip the update of machine->usb in the board init function.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Alexander Graf <agraf@suse.de>
NUMA queue 2015-03-19
# gpg: Signature made Thu Mar 19 19:25:53 2015 GMT using RSA key ID 984DC5A6
# gpg: Can't check signature: public key not found
* remotes/ehabkost/tags/work/numa-verify-cpus-pull-request:
numa: Print warning if no node is assigned to a CPU
pc: fix default VCPU to NUMA node mapping
numa: introduce machine callback for VCPU to node mapping
numa: Reject configuration if CPU appears on multiple nodes
numa: Reject CPU indexes > max_cpus
numa: Fix off-by-one error at MAX_CPUMASK_BITS check
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Current default round-robin way of distributing VCPUs among
NUMA nodes might be wrong in case on multi-core/threads
CPUs. Making guests confused wrt topology where cores from
the same socket are on different nodes.
Allow a machine to override default mapping by providing
MachineClass::cpu_index_to_socket_id()
callback which would allow it group VCPUs from a socket
on the same NUMA node.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
virtio-serial api: guest_writable callback for users
# gpg: Signature made Thu Mar 19 12:06:55 2015 GMT using RSA key ID 854083B6
# gpg: Good signature from "Amit Shah <amit@amitshah.net>"
# gpg: aka "Amit Shah <amit@kernel.org>"
# gpg: aka "Amit Shah <amitshah@gmx.net>"
* remotes/amit/tags/vser-for-2.3-3:
virtio: serial: expose a 'guest_writable' callback for users
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Users of virtio-serial may want to know when a port becomes writable. A
port can stop accepting writes if the guest port is open but not being
read from. In this case, data gets queued up in the virtqueue, and
after the vq is full, writes to the port do not succeed.
When the guest reads off a vq element, and adds a new one for the host
to put data in, we can tell users the port is available for more writes,
via the new ->guest_writable() callback.
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
pci, virtio bugfixes for 2.3
Just a bunch of bugfixes. Should be nothing remarkable here.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed Mar 18 12:31:03 2015 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@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: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream:
pcie_aer: fix comment to match pcie spec
pci: fix several trivial typos in comment
aer: fix a wrong init PCI_ERR_COR_STATUS w1cmask type register
pcie_aer: fix typos in pcie_aer_inject_error comment
aer: fix wrong check on expose aer tlp prefix log
pcie: correct mistaken register bit for End-End TLP Prefix Blocking
virtio: Fix memory leaks reported by Coverity
virtio: validate the existence of handle_output before calling it
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
from pcie spec 7.8.17, the End-End TLP Prefix Blocking bit local
is 15(e.g. 0x8000) in device control 2 register.
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2ed1ebcf6 "timer: replace time() with QEMU_CLOCK_HOST" broke compile
when configured with --enable-profiler. Turned out the profiler has been
broken for a while.
This does s/qemu_time/tcg_time/ as the profiler only works in a TCG mode.
This also fixes the compile error.
This changes profile_getclock() to return nanoseconds rather than
CPU ticks as the "profile" HMP command prints seconds and there is no
platform-independent way to get ticks-per-second rate.
Since TCG is quite slow and get_clock() returns nanoseconds (fine
enough), this should not affect precision much.
This removes unused qemu_time_start and tlb_flush_time.
Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Message-Id: <1426478258-29961-1-git-send-email-aik@ozlabs.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
migration/next for 20150317
# gpg: Signature made Tue Mar 17 14:21:14 2015 GMT using RSA key ID 5872D723
# gpg: Can't check signature: public key not found
* remotes/juanquintela/tags/migration/20150317:
migration: Expose 'cancelling' status to user
migration: Convert 'status' of MigrationInfo to use an enum type
hmp: Rename 'MigrationStatus' to 'HMPMigrationStatus'
migration: Rename abbreviated macro MIG_STATE_* to MIGRATION_STATUS_*
migration: Remove unused functions
arch_init: Count the total number of pages by using helper function
migrate_incoming: Cleanup/clarify error messages
Warn against the use of the string as uri parameter to migrate-incoming
migrate_incoming: use hmp_handle_error
migration: Fix remaining 32 bit compiler errors
migration: Fix some 32 bit compiler errors
migration/rdma: clean up qemu_rdma_dest_init a bit
migration: Avoid qerror_report_err() outside QMP command handlers
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
To complement qdev's bus-oriented info qtree, info qom-tree
prints a hierarchical view of the QOM composition tree.
By default, the machine composition tree is shown. This can be overriden
by supplying a path argument, such as "info qom-tree /".
Tested-by: Alistair Francis <alistair.francis@xilinx.com>
Signed-off-by: Andreas Färber <afaerber@suse.de>
This loses the messages explaining the error printed with
error_printf_unless_qmp(). The next commit will make up for the loss.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Block patches for 2.3-rc0
# gpg: Signature made Mon Mar 16 16:11:55 2015 GMT using RSA key ID C88F2FD6
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>"
* remotes/kevin/tags/for-upstream:
block/vpc: remove disabled code from get_sector_offset
block/vpc: rename footer->size -> footer->current_size
block/vpc: make calculate_geometry spec conform
vpc: Ignore geometry for large images
block/vpc: optimize vpc_co_get_block_status
block: Drop bdrv_find
blockdev: Convert bdrv_find to blk_by_name
migration: Convert bdrv_find to blk_by_name
monitor: Convert bdrv_find to blk_by_name
iotests: Test non-self-referential qcow2 refblocks
iotests: Add tests for refcount table growth
qcow2: Respect new_block in alloc_refcount_block()
qemu-img: Avoid qerror_report_err() outside QMP handlers, again
block: Fix block-set-write-threshold not to use funky error class
block: Deprecate QCOW/QCOW2 encryption
qemu-img: Fix convert, amend error messages for unknown options
iotests: Update 051's reference output
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
We now always send a JSON blob describing the migration file format as part
of the migration stream. However, some tools built around QEMU have proven
to stumble over this.
This patch gives the user the chance to disable said self-describing part of
the migration stream. To disable vmdesc submission, just add
-machine suppress-vmdesc=on
to your QEMU command line.
Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Juan Quintela <quintela@redhat.com>
It used to be an int, but then we can't pass directly the
bytes_transferred parameter, that would happen later in the series.
Signed-off-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Amit Shah <amit.shah@redhat.com>
Final batch of s390x enhancements/fixes for 2.3:
- handle TOD clock during migration
- CPACF key wrap options
- limit amount of pci device code we build
- ensure big endian accesses for ccws
- various fixes and cleanups
# gpg: Signature made Mon Mar 16 10:01:44 2015 GMT using RSA key ID C6F02FAF
# gpg: Good signature from "Cornelia Huck <huckc@linux.vnet.ibm.com>"
# gpg: aka "Cornelia Huck <cornelia.huck@de.ibm.com>"
* remotes/cohuck/tags/s390x-20150316:
s390x/config: Do not include full pci.mak
s390x/pci: fix length in sei_nt2 event
s390x/ipl: remove dead code
s390x/virtio-bus: Remove unused function s390_virtio_bus_console()
s390x: CPACF: Handle key wrap machine options
s390x/kvm: make use of generic vm attribute check
kvm: encapsulate HAS_DEVICE for vm attrs
virtio-ccw: assure BE accesses
s390x/kvm: Guest Migration TOD clock synchronization
s390x: Replace unchecked qdev_init() by qdev_init_nofail()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
misc ui patches, mostly sdl related.
# gpg: Signature made Thu Mar 12 14:51:07 2015 GMT using RSA key ID D3E87138
# 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>"
* remotes/kraxel/tags/pull-sdl-20150312-2:
pixman: add a bunch of PIXMAN_BE_* defines for 32bpp
Allow the use of X11 from a non standard location.
configure: opengl overhaul
sdl: Fix crash when calling sdl_switch() with NULL surface
sdl: Refresh debug statements
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
There is a not-so-subtle race in QSLIST_INSERT_HEAD_ATOMIC.
Because atomic_cmpxchg returns the old value instead of a success flag,
QSLIST_INSERT_HEAD_ATOMIC was checking for success by comparing against
the second argument to atomic_cmpxchg. Unfortunately, this only works
if the second argument is a local or thread-local variable.
If it is in memory, it can be subject to common subexpression elimination
(and then everything's fine) or reloaded after the atomic_cmpxchg,
depending on the compiler's whims. If the latter happens, the race can
happen. A thread can sneak in, doing something on elm->field.sle_next
after the atomic_cmpxchg and before the comparison. This causes a wrong
failure, and then two threads are using "elm" at the same time. In the
case discovered by Christian, the sequence was likely something like this:
thread 1 | thread 2
QSLIST_INSERT_HEAD_ATOMIC |
atomic_cmpxchg succeeds |
elm added to list |
| steal release_pool
| QSLIST_REMOVE_HEAD
| elm removed from list
| ...
| QSLIST_INSERT_HEAD_ATOMIC
| (overwrites sle_next)
spurious failure |
atomic_cmpxchg succeeds |
elm added to list again |
|
steal release_pool |
QSLIST_REMOVE_HEAD |
elm removed again |
The last three steps could be done by a third thread as well.
A reproducer that failed in a matter of seconds is as follows:
- the guest has 32 VCPUs on a 28 core host (hyperthreading was enabled),
memory was 16G just to err on the safe side (the host has 64G, but hey
at least you need no s390)
- the guest has 24 null-aio virtio-blk devices using dataplane
(-object iothread,id=ioN -drive if=none,id=blkN,driver=null-aio,size=500G
-device virtio-blk-pci,iothread=ioN,drive=blkN)
- the guest also has a single network interface. It's only doing loopback
tests so slirp vs. tap and the model doesn't matter.
- the guest is running fio with the following script:
[global]
rw=randread
blocksize=16k
ioengine=libaio
runtime=10m
buffered=0
fallocate=none
time_based
iodepth=32
[virtio1a]
filename=/dev/block/252\:16
[virtio1b]
filename=/dev/block/252\:16
...
[virtio24a]
filename=/dev/block/252\:384
[virtio24b]
filename=/dev/block/252\:384
[listen1]
protocol=tcp
ioengine=net
port=12345
listen
rw=read
bs=4k
size=1000g
[connect1]
protocol=tcp
hostname=localhost
ioengine=net
port=12345
protocol=tcp
rw=write
startdelay=1
size=1000g
...
[listen8]
protocol=tcp
ioengine=net
port=12352
listen
rw=read
bs=4k
size=1000g
[connect8]
protocol=tcp
hostname=localhost
ioengine=net
port=12352
rw=write
startdelay=1
size=1000g
Moral of the story: I should refrain from writing more clever stuff.
At least it looks like it is not too clever to be undebuggable.
Reported-by: Christian Borntraeger <borntraeger@de.ibm.com>
Tested-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1426002357-6889-1-git-send-email-pbonzini@redhat.com
Fixes: c740ad92d0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Rename config option from "glx" to "opengl", glx will not be the only
option for opengl in near future. Also switch over to pkg-config for
opengl support detection.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
misc fixes and cleanups
A bunch of fixes all over the place, some of the
bugs fixed are actually regressions.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# gpg: Signature made Wed Mar 11 17:48:30 2015 GMT using RSA key ID D28D5469
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>"
# gpg: aka "Michael S. Tsirkin <mst@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: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
# Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA 8A0D 281F 0DB8 D28D 5469
* remotes/mst/tags/for_upstream: (25 commits)
virtio-scsi: remove empty wrapper for cmd
virtio-scsi: clean out duplicate cdb field
virtio-scsi: fix cdb/sense size
uapi/virtio_scsi: allow overriding CDB/SENSE size
virtio-scsi: drop duplicate CDB/SENSE SIZE
exec: don't include hw/boards for linux-user
acpi: specify format for build_append_namestring
MAINTAINERS: drop aliguori@amazon.com
tpm: Move memory subregion function into realize function
virtio-pci: Convert to realize()
pci: Convert pci_nic_init() to Error to avoid qdev_init()
machine: query mem-merge machine property
machine: query dump-guest-core machine property
hw/boards: make it safe to include for linux-user
machine: query phandle-start machine property
machine: query kvm-shadow-mem machine property
kvm: add machine state to kvm_arch_init
machine: query kernel-irqchip property
machine: allowed/required kernel-irqchip support
machine: replace qemu opts with iommu property
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The anonymous struct only has a single field now, drop the wrapper
structure.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
cdb is now part of cmd, drop it from req.
There's also nothing to check using build assert now.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Commit "virtio-scsi: use standard-headers" added
cdb and sense into req/rep structures, which
breaks uses of sizeof for these structures,
since qemu adds its own arrays on top.
To fix, redefine CDB/sense field size to 0.
Reported-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU wants to use virtio scsi structures with
a different VIRTIO_SCSI_CDB_SIZE/VIRTIO_SCSI_SENSE_SIZE,
let's add ifdefs to allow overriding them.
Keep the old defines under new names:
VIRTIO_SCSI_CDB_DEFAULT_SIZE/VIRTIO_SCSI_SENSE_DEFAULT_SIZE,
since that's what these values really are:
defaults for cdb/sense size fields.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
As noted by Andreas, hw/boards.h shouldn't be used outside softmmu code.
Include it conditionally, and drop the (now unnecessary) ifdef guards in
hw/boards.h
Reported-by: Andreas Färber <afaerber@suse.de>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Running
qemu-bin ... -machine pc,mem-merge=on
leads to crash:
x86_64-softmmu/qemu-system-x86_64 -machine pc,dump-guest-core=on
qemu-system-x86_64: qemu/util/qemu-option.c:387: qemu_opt_get_bool_helper:
Assertion `opt->desc && opt->desc->type == QEMU_OPT_BOOL' failed. Aborted
(core dumped)
This happens because the commit e79d5a6 ("machine: remove qemu_machine_opts
global list") removed the global option descriptions and moved them to
MachineState's QOM properties.
Fix this by querying machine properties through designated wrappers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Running
qemu-bin ... -machine pc,dump-guest-core=on
leads to crash:
x86_64-softmmu/qemu-system-x86_64 -machine pc,dump-guest-core=on
qemu-system-x86_64: qemu/util/qemu-option.c:387: qemu_opt_get_bool_helper:
Assertion `opt->desc && opt->desc->type == QEMU_OPT_BOOL' failed. Aborted
(core dumped)
This happens because the commit e79d5a6 ("machine: remove qemu_machine_opts
global list") removed the global option descriptions and moved them to
MachineState's QOM properties.
Fix this by querying machine properties through designated wrappers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Make it safe to include hw/boards.h in exec.c
for linux-user configurations.
We don't need any of its contents though.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit e79d5a6 ("machine: remove qemu_machine_opts global list") removed
the global option descriptions and moved them to MachineState's QOM
properties.
Query phandle-start by accessing machine properties through designated
wrappers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Commit e79d5a6 ("machine: remove qemu_machine_opts global list") removed
the global option descriptions and moved them to MachineState's QOM
properties.
Query kvm-shadow-mem by accessing machine properties through designated
wrappers.
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
