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2018-05-15migration: update docsDr. David Alan Gilbert1-156/+376
Update the migration docs: Among other changes: * Added a general list of advice for device authors * Reordered the section on conditional state (subsections etc) into the order we prefer. * Add a note about firmware Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Balamuruhan S <bala24@linux.vnet.ibm.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Message-Id: <20180503191059.19576-1-dgilbert@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-05-15docs: Document the new default sizes of the qcow2 cachesAlberto Garcia1-17/+16
We have just reduced the refcount cache size to the minimum unless the user explicitly requests a larger one, so we have to update the documentation to reflect this change. Signed-off-by: Alberto Garcia <berto@igalia.com> Message-id: c5f0bde23558dd9d33b21fffc76ac9953cc19c56.1523968389.git.berto@igalia.com Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-05-15specs/qcow2: Clarify that compressed clusters have the COPIED bit resetAlberto Garcia1-4/+4
Compressed clusters are not supposed to have the COPIED bit set, but this is not made explicit in the specs, so let's document it. Signed-off-by: Alberto Garcia <berto@igalia.com> Message-id: 74552e1d6e858d3159cb0c0e188e80bc9248e337.1523376013.git.berto@igalia.com Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
2018-05-14net: Remove the deprecated "vlan" parameterThomas Huth1-3/+0
It's been marked as deprecated since QEMU v2.9.0, so that should have been enough time for everybody to either just drop unnecessary "vlan=0" parameters, to switch to the modern -device + -netdev syntax for connecting guest NICs with host network backends, or to switch to the "hubport" netdev in case hubs are really wanted instead. Buglink: https://bugs.launchpad.net/qemu/+bug/658904 Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Jason Wang <jasowang@redhat.com>
2018-05-04qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREFMarc-André Lureau1-1/+1
Now that we can safely call QOBJECT() on QObject * as well as its subtypes, we can have macros qobject_ref() / qobject_unref() that work everywhere instead of having to use QINCREF() / QDECREF() for QObject and qobject_incref() / qobject_decref() for its subtypes. The replacement is mechanical, except I broke a long line, and added a cast in monitor_qmp_cleanup_req_queue_locked(). Unlike qobject_decref(), qobject_unref() doesn't accept void *. Note that the new macros evaluate their argument exactly once, thus no need to shout them. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Message-Id: <20180419150145.24795-4-marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> [Rebased, semantic conflict resolved, commit message improved] Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-04-27spapr: Support ibm,dynamic-memory-v2 propertyBharata B Rao1-0/+19
The new property ibm,dynamic-memory-v2 allows memory to be represented in a more compact manner in device tree. Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-04-25migration: postcopy_blocktime documentationAlexey Perevalov1-0/+14
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Signed-off-by: Alexey Perevalov <a.perevalov@samsung.com> Reviewed-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com> Message-Id: <1521742647-25550-5-git-send-email-a.perevalov@samsung.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-04-09vhost-user: back SET/GET_CONFIG requests with a protocol featureMaxime Coquelin1-9/+12
Without a dedicated protocol feature, QEMU cannot know whether the backend can handle VHOST_USER_SET_CONFIG and VHOST_USER_GET_CONFIG messages. This patch adds a protocol feature that is only advertised by QEMU if the device implements the config ops. Vhost user init fails if the device support the feature but the backend doesn't. The backend should only send VHOST_USER_SLAVE_CONFIG_CHANGE_MSG requests if the protocol feature has been negotiated. Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Acked-by: Changpeng Liu <changpeng.liu@intel.com>
2018-03-20Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell2-0/+93
virtio,vhost,pci,pc: features, cleanups SRAT tables for DIMM devices new virtio net flags for speed/duplex post-copy migration support in vhost cleanups in pci Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 20 Mar 2018 14:40:43 GMT # gpg: using RSA key 281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # 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: (51 commits) postcopy shared docs libvhost-user: Claim support for postcopy postcopy: Allow shared memory vhost: Huge page align and merge vhost+postcopy: Wire up POSTCOPY_END notify vhost-user: Add VHOST_USER_POSTCOPY_END message libvhost-user: mprotect & madvises for postcopy vhost+postcopy: Call wakeups vhost+postcopy: Add vhost waker postcopy: postcopy_notify_shared_wake postcopy: helper for waking shared vhost+postcopy: Resolve client address postcopy-ram: add a stub for postcopy_request_shared_page vhost+postcopy: Helper to send requests to source for shared pages vhost+postcopy: Stash RAMBlock and offset vhost+postcopy: Send address back to qemu libvhost-user+postcopy: Register new regions with the ufd migration/ram: ramblock_recv_bitmap_test_byte_offset postcopy+vhost-user: Split set_mem_table for postcopy vhost+postcopy: Transmit 'listen' to slave ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # scripts/update-linux-headers.sh
2018-03-20postcopy shared docsDr. David Alan Gilbert1-0/+41
Add some notes to the migration documentation for shared memory postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20vhost-user: Add VHOST_USER_POSTCOPY_END messageDr. David Alan Gilbert1-0/+12
This message is sent just before the end of postcopy to get the client to stop using userfault since we wont respond to any more requests. It should close userfaultfd so that any other pages get mapped to the backing file automatically by the kernel, since at this point we know we've received everything. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20vhost+postcopy: Send address back to qemuDr. David Alan Gilbert1-0/+9
We need a better way, but at the moment we need the address of the mappings sent back to qemu so it can interpret the messages on the userfaultfd it reads. This is done as a 3 stage set: QEMU -> client set_mem_table mmap stuff, get addresses client -> qemu here are the addresses qemu -> client OK - now you can use them That ensures that qemu has registered the new addresses in it's userfault code before the client starts accessing them. Note: We don't ask for the default 'ack' reply since we've got our own. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20vhost+postcopy: Transmit 'listen' to slaveDr. David Alan Gilbert1-0/+11
Notify the vhost-user slave on reception of the 'postcopy-listen' event from the source. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20vhost-user: Add 'VHOST_USER_POSTCOPY_ADVISE' messageDr. David Alan Gilbert1-0/+10
Wire up a notifier to send a VHOST_USER_POSTCOPY_ADVISE message on an incoming advise. Later patches will fill in the behaviour/contents of the message. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-20postcopy: Add vhost-user flag for postcopy and check itDr. David Alan Gilbert1-0/+10
Add a vhost feature flag for postcopy support, and use the postcopy notifier to check it before allowing postcopy. Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-19docs: update QMP documents for OOB commandsPeter Xu2-12/+82
Update both the developer and spec for the new QMP OOB (Out-Of-Band) command. Signed-off-by: Peter Xu <peterx@redhat.com> Message-Id: <20180309090006.10018-2-peterx@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: grammar tweaks] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-19qapi: generate a literal qobject for introspectionMarc-André Lureau1-10/+19
Replace the generated json string with a literal qobject. The later is easier to deal with, at run time as well as compile time: adding #if conditionals will be easier than in a json string. The output of query-qmp-schema is not changed. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180305172951.2150-5-marcandre.lureau@redhat.com> [eblake: fix python 3 failure] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-16Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell2-47/+173
* Record-replay lockstep execution, log dumper and fixes (Alex, Pavel) * SCSI fix to pass maximum transfer size (Daniel Barboza) * chardev fixes and improved iothread support (Daniel Berrangé, Peter) * checkpatch tweak (Eric) * make help tweak (Marc-André) * make more PCI NICs available with -net or -nic (myself) * change default q35 NIC to e1000e (myself) * SCSI support for NDOB bit (myself) * membarrier system call support (myself) * SuperIO refactoring (Philippe) * miscellaneous cleanups and fixes (Thomas) # gpg: Signature made Mon 12 Mar 2018 16:10:52 GMT # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (69 commits) tcg: fix cpu_io_recompile replay: update documentation replay: save vmstate of the asynchronous events replay: don't process async events when warping the clock scripts/replay-dump.py: replay log dumper replay: avoid recursive call of checkpoints replay: check return values of fwrite replay: push replay_mutex_lock up the call tree replay: don't destroy mutex at exit replay: make locking visible outside replay code replay/replay-internal.c: track holding of replay_lock replay/replay.c: bump REPLAY_VERSION again replay: save prior value of the host clock replay: added replay log format description replay: fix save/load vm for non-empty queue replay: fixed replay_enable_events replay: fix processing async events cpu-exec: fix exception_index handling hw/i386/pc: Factor out the superio code hw/alpha/dp264: Use the TYPE_SMC37C669_SUPERIO ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # default-configs/i386-softmmu.mak # default-configs/x86_64-softmmu.mak
2018-03-13target/i386: add Secure Encrypted Virtualization (SEV) objectBrijesh Singh1-0/+17
Add a new memory encryption object 'sev-guest'. The object will be used to create encrypted VMs on AMD EPYC CPU. The object provides the properties to pass guest owner's public Diffie-hellman key, guest policy and session information required to create the memory encryption context within the SEV firmware. e.g to launch SEV guest # $QEMU \ -object sev-guest,id=sev0 \ -machine ....,memory-encryption=sev0 Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-13docs: add AMD Secure Encrypted Virtualization (SEV)Brijesh Singh1-0/+92
Create a documentation entry to describe the AMD Secure Encrypted Virtualization (SEV) feature. Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12replay: update documentationPavel Dovgalyuk1-20/+52
This patch clarifies the description of the record/replay feature in docs/replay.txt Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095333.1060.1331.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgaluk@ispras.ru>
2018-03-12replay: push replay_mutex_lock up the call treeAlex Bennée1-0/+22
Now instead of using the replay_lock to guard the output of the log we now use it to protect the whole execution section. This replaces what the BQL used to do when it was held during TCG execution. We also introduce some rules for locking order - mainly that you cannot take the replay_mutex while holding the BQL. This leads to some slight sophistry during start-up and extending the replay_mutex_destroy function to unlock the mutex without checking for the BQL condition so it can be cleanly dropped in the non-replay case. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Tested-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Message-Id: <20180227095248.1060.40374.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2018-03-12replay: added replay log format descriptionPavel Dovgalyuk1-0/+69
This patch adds description of the replay log file format into the docs/replay.txt. Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20180227095220.1060.58759.stgit@pasha-VirtualBox> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12docs: document atomic_load_acquire and atomic_store_releasePaolo Bonzini1-27/+30
We will use them in the next patch, document what they do. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-06Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell2-6/+56
Block layer patches # gpg: Signature made Mon 05 Mar 2018 17:45:51 GMT # gpg: using RSA key 7F09B272C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" # Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6 * remotes/kevin/tags/for-upstream: (38 commits) block: Fix NULL dereference on empty drive error qcow2: Replace align_offset() with ROUND_UP() block/ssh: Add basic .bdrv_truncate() block/ssh: Make ssh_grow_file() blocking block/ssh: Pull ssh_grow_file() from ssh_create() qemu-img: Make resize error message more general qcow2: make qcow2_co_create2() a coroutine_fn block: rename .bdrv_create() to .bdrv_co_create_opts() Revert "IDE: Do not flush empty CDROM drives" block: test blk_aio_flush() with blk->root == NULL block: add BlockBackend->in_flight counter block: extract AIO_WAIT_WHILE() from BlockDriverState aio: rename aio_context_in_iothread() to in_aio_context_home_thread() docs: document how to use the l2-cache-entry-size parameter specs/qcow2: Fix documentation of the compressed cluster descriptor iotest 033: add misaligned write-zeroes test via truncate block: fix write with zero flag set and iovector provided block: Drop unused .bdrv_co_get_block_status() vvfat: Switch to .bdrv_co_block_status() vpc: Switch to .bdrv_co_block_status() ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # include/block/block.h
2018-03-02Fix up dangling references to qmp-commands.* in comment and docMarkus Armbruster1-2/+1
Fix up the reference to qmp-commands.hx in qmp.c. Missed in commit 5032a16d1d. Fix up the reference to qmp-commands.txt in docs/xen-save-devices-state.txt. Missed in commit 4d8bb958fa. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-29-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02qapi: Move qapi-schema.json to qapi/, rename generated filesMarkus Armbruster3-17/+17
Move qapi-schema.json to qapi/, so it's next to its modules, and all files get generated to qapi/, not just the ones generated for modules. Consistently name the generated files qapi-MODULE.EXT: qmp-commands.[ch] become qapi-commands.[ch], qapi-event.[ch] become qapi-events.[ch], and qmp-introspect.[ch] become qapi-introspect.[ch]. This gets rid of the temporary hacks in scripts/qapi/commands.py, scripts/qapi/events.py, and scripts/qapi/common.py. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-28-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: Fix trailing dot in tpm.c, undo temporary hack for OSX toolchain] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02docs: Correct outdated information on QAPIMarkus Armbruster2-17/+11
* Fix guidance on error classes * Point to generated documentation * Drop plea for documentation, because the QAPI code generator enforces it since commit 3313b6124b * Minor tweaks here and there Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-27-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02docs/devel/writing-qmp-commands: Update for modular QAPIMarkus Armbruster1-7/+7
With modular code generation, putting stuff right into qapi-schema.json is a bad idea. Update writing-qmp-commands.txt accordingly. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-26-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02qapi: Rename generated qmp-marshal.c to qmp-commands.cMarkus Armbruster1-3/+3
All generated .c are named like their .h, except for qmp-marshal.c and qmp-commands.h. To add to the confusion, tests-qmp-commands.c falsely matches generated test-qmp-commands.h. Get rid of this unnecessary complication. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-19-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02qapi-gen: New common driver for code and doc generatorsMarkus Armbruster1-54/+48
Whenever qapi-schema.json changes, we run six programs eleven times to update eleven files. Similar for qga/qapi-schema.json. This is silly. Replace the six programs by a single program that spits out all eleven files. The programs become modules in new Python package qapi, along with the helper library. This requires moving them to scripts/qapi/. While moving them, consistently drop executable mode bits. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20180211093607.27351-9-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> [eblake: move change to one-line 'blurb' earlier in series, mention mode bit change as intentional, update qapi-code-gen.txt to match actual generated events.c file] Signed-off-by: Eric Blake <eblake@redhat.com>
2018-03-02docs: document how to use the l2-cache-entry-size parameterAlberto Garcia1-3/+43
This patch updates docs/qcow2-cache.txt explaining how to use the new l2-cache-entry-size parameter. Here's a more detailed technical description of this feature: https://lists.gnu.org/archive/html/qemu-block/2017-09/msg00635.html And here are some performance numbers: https://lists.gnu.org/archive/html/qemu-block/2017-12/msg00507.html Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-02specs/qcow2: Fix documentation of the compressed cluster descriptorAlberto Garcia1-3/+13
This patch fixes several mistakes in the documentation of the compressed cluster descriptor: 1) the documentation claims that the cluster descriptor contains the number of sectors used to store the compressed data, but what it actually contains is the number of sectors *minus one* or, in other words, the number of additional sectors after the first one. 2) the width of the fields is incorrectly specified. The number of bits used by each field is x = 62 - (cluster_bits - 8) for the offset field y = (cluster_bits - 8) for the size field So the offset field's location is [0, x-1], not [0, x] as stated. 3) the size field does not contain the size of the compressed data, but rather the number of sectors where that data is stored. The compressed data starts at the exact point specified in the offset field and ends when there's enough data to produce a cluster of decompressed data. Both points can be in the middle of a sector, allowing several compressed clusters to be stored next to one another, sharing sectors if necessary. Cc: qemu-stable@nongnu.org Signed-off-by: Alberto Garcia <berto@igalia.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-03-01cryptodev-vhost-user: add crypto session handlerGonglei1-0/+26
Introduce two vhost-user meassges: VHOST_USER_CREATE_CRYPTO_SESSION and VHOST_USER_CLOSE_CRYPTO_SESSION. At this point, the QEMU side support crypto operation in cryptodev host-user backend. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com> Signed-off-by: Jay Zhou <jianjay.zhou@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01docs/vmcoreinfo: detail unsupported host format behaviourMarc-André Lureau1-0/+4
Suggested-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01docs: pcie: Spell out machine type needs for PCIe featuresKashyap Chamarthy1-2/+7
PCIe features are available only via the 'q35' machine type for x86 and the 'virt' machine type for AArch64 architecture. Mention that explicitly. Thanks: Daniel Berrangé Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-03-01docs: document virtio-balloon statsTomáš Golembiovský1-0/+2
Document statistics added in commits commit a0d06486b445985b8d128df172daefbae205bffd Author: Denis V. Lunev <den@openvz.org> Date: Wed Feb 24 10:50:48 2016 +0300 virtio-balloon: add 'available' counter and commit bf1e7140ef0b3a149860ab9f05b36665133238f6 Author: Tomáš Golembiovský <tgolembi@redhat.com> Date: Tue Dec 5 13:14:46 2017 +0100 virtio-balloon: include statistics of disk/file caches Signed-off-by: Tomáš Golembiovský <tgolembi@redhat.com> Reviewed-by: Jonathan Helman <jonathan.helman@oracle.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-02-19Merge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into ↵Peter Maydell1-0/+255
staging PVRDMA implementation # gpg: Signature made Mon 19 Feb 2018 11:08:49 GMT # gpg: using RSA key 36D4C0F0CF2FE46D # gpg: Good signature from "Marcel Apfelbaum <marcel@redhat.com>" # gpg: WARNING: This key is not certified with sufficiently trusted signatures! # gpg: It is not certain that the signature belongs to the owner. # Primary key fingerprint: B1C6 3A57 F92E 08F2 640F 31F5 36D4 C0F0 CF2F E46D * remotes/marcel/tags/rdma-pull-request: MAINTAINERS: add entry for hw/rdma hw/rdma: Implementation of PVRDMA device hw/rdma: PVRDMA commands and data-path ops hw/rdma: Implementation of generic rdma device layers hw/rdma: Definitions for rdma device and rdma resource manager hw/rdma: Add wrappers and macros include/standard-headers: add pvrdma related headers scripts/update-linux-headers: import pvrdma headers docs: add pvrdma device documentation. mem: add share parameter to memory-backend-ram Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-19docs: add pvrdma device documentation.Marcel Apfelbaum1-0/+255
Signed-off-by: Marcel Apfelbaum <marcel@redhat.com> Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com> Reviewed-by: Shamir Rabinovitch <shamir.rabinovitch@oracle.com>
2018-02-19docs: document our stable processCornelia Huck1-0/+69
Some pointers on how to get a patch into stable. [contains some suggestions by mdroth and eblake] Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Michael Roth <mdroth@linux.vnet.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2018-02-16Merge remote-tracking branch ↵Peter Maydell1-2/+2
'remotes/dgilbert/tags/pull-migration-20180214a' into staging Migration pull 20180214 Note that the 'Add test for migration to bad destination' displays a 'Connection refused' during running, but still gives the correct exit code and OK (It's checking that the source doesn't fail when it can't connect, so that's the right error). If it's particularly disliked that patch can be skipped individually. # gpg: Signature made Wed 14 Feb 2018 15:33:04 GMT # gpg: using RSA key 0516331EBC5BFDE7 # gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" # Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7 * remotes/dgilbert/tags/pull-migration-20180214a: migration: pass MigrationState to migrate_init() migration: allow send_rq to fail migration: provide postcopy_fault_thread_notify() migration: reuse mis->userfault_quit_fd migration: better error handling with QEMUFile tests/migration: Add test for migration to bad destination migration: Fix early failure cleanup tests/migration: Add source to PC boot block migration: improve documentation of postcopy-ram migration/xen: Check return value of qemu_fclose Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-14migration: improve documentation of postcopy-ramGreg Kurz1-2/+2
This capability must have the same value on both source and destination, otherwise migration fails (commit 875fcd013ab6 "migration: incoming postcopy advise sanity checks"). Let's write it down in various places where postcopy-ram is documented. Signed-off-by: Greg Kurz <groug@kaod.org> Message-Id: <151801810352.29167.4832480228518630626.stgit@bahia.lan> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-02-13Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into stagingPeter Maydell1-0/+10
Block layer patches # gpg: Signature made Tue 13 Feb 2018 17:03:11 GMT # gpg: using RSA key 7F09B272C88F2FD6 # gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" # Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6 * remotes/kevin/tags/for-upstream: (55 commits) iotests: Add l2-cache-entry-size to iotest 137 iotests: Test downgrading an image using a small L2 slice size iotests: Test valid values of l2-cache-entry-size qcow2: Allow configuring the L2 slice size qcow2: Rename l2_table in count_cow_clusters() qcow2: Rename l2_table in count_contiguous_clusters_unallocated() qcow2: Rename l2_table in count_contiguous_clusters() qcow2: Rename l2_table in qcow2_alloc_compressed_cluster_offset() qcow2: Update qcow2_truncate() to support L2 slices qcow2: Update expand_zero_clusters_in_l1() to support L2 slices qcow2: Prepare expand_zero_clusters_in_l1() for adding L2 slice support qcow2: Read refcount before L2 table in expand_zero_clusters_in_l1() qcow2: Update qcow2_update_snapshot_refcount() to support L2 slices qcow2: Prepare qcow2_update_snapshot_refcount() for adding L2 slice support qcow2: Update zero_single_l2() to support L2 slices qcow2: Update discard_single_l2() to support L2 slices qcow2: Update handle_alloc() to support L2 slices qcow2: Update handle_copied() to support L2 slices qcow2: Update qcow2_alloc_cluster_link_l2() to support L2 slices qcow2: Update qcow2_get_cluster_offset() to support L2 slices ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-13Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into stagingPeter Maydell1-0/+107
* CAN bus (will be under network maintainner) * scsi-block opblockers (myself) * Dirty log bitmap cleanup (myself) * SDHCI improvements and tests (Philippe) * HAX support for larger guest sizese (Yu Ning) # gpg: Signature made Tue 13 Feb 2018 15:37:14 GMT # gpg: using RSA key BFFBD25F78C7AE83 # gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" # gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" # Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1 # Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83 * remotes/bonzini/tags/for-upstream: (48 commits) travis: use libgcc-4.8-dev (libgcc-6-dev is not available on Ubuntu 14.04) memory: unify loops to sync dirty log bitmap memory: hide memory_region_sync_dirty_bitmap behind DirtyBitmapSnapshot memory: remove memory_region_test_and_clear_dirty g364fb: switch to using DirtyBitmapSnapshot sdhci: add Spec v4.2 register definitions sdhci: add a check_capab_v3() qtest sdhci: check Spec v3 capabilities qtest hw/arm/xilinx_zynqmp: enable the UHS-I mode hw/arm/xilinx_zynqmp: fix the capabilities/spec version to match the datasheet hw/arm/fsl-imx6: implement SDHCI Spec. v3 hw/arm/bcm2835_peripherals: change maximum block size to 1kB hw/arm/bcm2835_peripherals: implement SDHCI Spec v3 sdhci: implement CMD/DAT[] fields in the Present State register sdhci: implement UHS-I voltage switch sdbus: add trace events sdhci: implement the Host Control 2 register (tuning sequence) sdhci: rename the hostctl1 register sdhci: add support for v3 capabilities hw/arm/xilinx_zynq: fix the capabilities register to match the datasheet ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-13Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into stagingPeter Maydell1-1/+1
virtio,vhost,pci,pc: features, fixes and cleanups - new stats in virtio balloon - virtio eventfd rework for boot speedup - vhost memory rework for boot speedup - fixes and cleanups all over the place Signed-off-by: Michael S. Tsirkin <mst@redhat.com> # gpg: Signature made Tue 13 Feb 2018 16:29:55 GMT # gpg: using RSA key 281F0DB8D28D5469 # gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" # gpg: aka "Michael S. Tsirkin <mst@redhat.com>" # 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: (22 commits) virtio-balloon: include statistics of disk/file caches acpi-test: update FADT lpc: drop pcie host dependency tests: acpi: fix FADT not being compared to reference table hw/pci-bridge: fix pcie root port's IO hints capability libvhost-user: Support across-memory-boundary access libvhost-user: Fix resource leak virtio-balloon: unref the memory region before continuing pci: removed the is_express field since a uniform interface was inserted virtio-blk: enable multiple vectors when using multiple I/O queues pci/bus: let it has higher migration priority pci-bridge/i82801b11: clear bridge registers on platform reset vhost: Move log_dirty check vhost: Merge and delete unused callbacks vhost: Clean out old vhost_set_memory and friends vhost: Regenerate region list from changed sections list vhost: Merge sections added to temporary list vhost: Simplify ring verification checks vhost: Build temporary section list and deref after commit virtio: improve virtio devices initialization time ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-02-13docs: Document share-rw property more thoroughlyFam Zheng1-0/+10
Suggested-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-02-13net/can: documentationPavel Pisa1-0/+107
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-09Include qapi/error.h exactly where neededMarkus Armbruster1-2/+0
This cleanup makes the number of objects depending on qapi/error.h drop from 1910 (out of 4743) to 1612 in my "build everything" tree. While there, separate #include from file comment with a blank line, and drop a useless comment on why qemu/osdep.h is included first. Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180201111846.21846-5-armbru@redhat.com> [Semantic conflict with commit 34e304e975 resolved, OSX breakage fixed]
2018-02-08pci: removed the is_express field since a uniform interface was insertedYoni Bettan1-1/+1
according to Eduardo Habkost's commit fd3b02c889 all PCIEs now implement INTERFACE_PCIE_DEVICE so we don't need is_express field anymore. Devices that implements only INTERFACE_PCIE_DEVICE (is_express == 1) or devices that implements only INTERFACE_CONVENTIONAL_PCI_DEVICE (is_express == 0) where not affected by the change. The only devices that were affected are those that are hybrid and also had (is_express == 1) - therefor only: - hw/vfio/pci.c - hw/usb/hcd-xhci.c - hw/xen/xen_pt.c For those 3 I made sure that QEMU_PCI_CAP_EXPRESS is on in instance_init() Reviewed-by: Marcel Apfelbaum <marcel@redhat.com> Reviewed-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Yoni Bettan <ybettan@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-02-08docs: Add docs/devel/testing.rstFam Zheng1-0/+486
To make our efforts on QEMU testing easier to consume by contributors, let's add a document. For example, Patchew reports build errors on patches that should be relatively easy to reproduce with a few steps, and it is much nicer if there is such a documentation that it can refer to. This focuses on how to run existing tests and how to write new test cases, without going into the frameworks themselves. The VM based testing section is moved from tests/vm/README which now is a single line pointing to the new doc. Signed-off-by: Fam Zheng <famz@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20180201022046.9425-1-famz@redhat.com> Signed-off-by: Fam Zheng <famz@redhat.com>
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