Commit Graph

1025 Commits

Author SHA1 Message Date
Peter Maydell
41e3340afe tests/vm: Propagate V=1 down into the make inside the VM
Invoking 'make vm-build-freebsd' and friends with V=1 should
propagate that verbosity setting down into the build run
inside the VM. Make sure we do that. This brings it into
line with how the container tests handle V=1.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180803085230.30574-4-peter.maydell@linaro.org>
Signed-off-by: Fam Zheng <famz@redhat.com>
2018-08-15 10:12:35 +08:00
Junyan He
a4de8552b2 hostmem-file: add the 'pmem' option
When QEMU emulates vNVDIMM labels and migrates vNVDIMM devices, it
needs to know whether the backend storage is a real persistent memory,
in order to decide whether special operations should be performed to
ensure the data persistence.

This boolean option 'pmem' allows users to specify whether the backend
storage of memory-backend-file is a real persistent memory. If
'pmem=on', QEMU will set the flag RAM_PMEM in the RAM block of the
corresponding memory region. If 'pmem' is set while lack of libpmem
support, a error is generated.

Signed-off-by: Junyan He <junyan.he@intel.com>
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-08-10 13:29:39 +03:00
Fam Zheng
f4a1b6536f docs: Describe using images in writing iotests
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2018-07-30 15:35:37 +02:00
Yaowei Bai
db817b8c50 tracing: Use double-dash spelling for trace option
The '-trace' and '--trace' spellings are only both supported in qemu
binary, while for qemu-nbd or qemu-img only '--trace' spelling is
supported. So for the consistency of trace option invocation, we
should use double-dash spelling in our documentation.

This's also mentioned in
https://wiki.qemu.org/BiteSizedTasks#Consistent_option_usage_in_documentation
.

Signed-off-by: Yaowei Bai <baiyaowei@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 1530674247-31200-1-git-send-email-baiyaowei@cmss.chinamobile.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-07-19 13:09:04 +01:00
Ville Skyttä
9277d81f5c docs: Grammar and spelling fixes
Signed-off-by: Ville Skyttä <ville.skytta@iki.fi>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20180612065150.21110-1-ville.skytta@iki.fi
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-07-13 10:16:04 +01:00
Alex Bennée
fe8bf5f629 build-system: add coverage-report target
This will build a coverage report under the current directory in
reports/coverage. At the users option a report can be generated by
directly invoking something like:

  make foo/bar/coverage-report.html

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2018-07-05 15:59:41 +01:00
Alex Bennée
990e6a2754 build-system: add clean-coverage target
This can be used to remove any stale coverage data before any
particular test run. This is useful for analysing individual tests.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>---
2018-07-05 15:59:41 +01:00
Alex Bennée
31d2dda3c4 build-system: remove per-test GCOV reporting
I'm not entirely sure who's using this information and certainly in a
CI environment it just washes over as additional noise. Later patches
will provide new reporting options so a user who wants to analyse
individual tests will be able to use that to get the information.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2018-07-05 15:59:41 +01:00
Peter Maydell
4fd1cbaf14 Monitor patches for 2018-07-03
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Merge remote-tracking branch 'remotes/armbru/tags/pull-monitor-2018-07-03-v2' into staging

Monitor patches for 2018-07-03

# gpg: Signature made Tue 03 Jul 2018 22:20:13 BST
# gpg:                using RSA key 3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-monitor-2018-07-03-v2: (32 commits)
  qapi: Polish command flags documentation in qapi-code-gen.txt
  monitor: Improve some comments
  qmp: Clean up capability negotiation after commit 02130314d8
  qobject: Let qobject_from_jsonf() fail instead of abort
  qmp: Switch timestamp_put() to qdict_from_jsonf_nofail()
  qmp: Add some comments around null responses
  qmp: Simplify monitor_qmp_respond()
  qmp: Replace get_qmp_greeting() by qmp_greeting()
  qmp: Replace monitor_json_emitter{,raw}() by qmp_{queue,send}_response()
  qmp: Use QDict * instead of QObject * for response objects
  qmp: De-duplicate error response building
  qobject: New qdict_from_jsonf_nofail()
  monitor: Peel off @mon_global wrapper
  monitor: Rename use_io_thr to use_io_thread
  qmp: Don't let JSON errors jump the queue
  qmp: Don't let malformed in-band commands jump the queue
  tests/qmp-test: Demonstrate QMP errors jumping the queue
  qmp: Simplify code around monitor_qmp_dispatch_one()
  qmp: Always free QMPRequest with qmp_request_free()
  qmp: Revert change to handle_qmp_command tracepoint
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-07-05 11:25:14 +01:00
Markus Armbruster
153d73f320 qapi: Polish command flags documentation in qapi-code-gen.txt
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-33-armbru@redhat.com>
2018-07-03 23:18:56 +02:00
Markus Armbruster
00ecec151d qmp: Redo how the client requests out-of-band execution
Commit cf869d5317 "qmp: support out-of-band (oob) execution" added a
general mechanism for command-independent arguments just for an
out-of-band flag:

    The "control" key is introduced to store this extra flag.  "control"
    field is used to store arguments that are shared by all the commands,
    rather than command specific arguments.  Let "run-oob" be the first.

However, it failed to reject unknown members of "control".  For
instance, in QMP command

    {"execute": "query-name", "id": 42, "control": {"crap": true}}

"crap" gets silently ignored.

Instead of fixing this, revert the general "control" mechanism
(because YAGNI), and do it the way I initially proposed, with key
"exec-oob".  Simpler code, simpler interface.

An out-of-band command

    {"execute": "migrate-pause", "id": 42, "control": {"run-oob": true}}

becomes

    {"exec-oob": "migrate-pause", "id": 42}

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-13-armbru@redhat.com>
[Commit message typo fixed]
2018-07-03 23:18:56 +02:00
Markus Armbruster
80cd93bd96 qmp: Make "id" optional again even in "oob" monitors
Commit cf869d5317 "qmp: support out-of-band (oob) execution" made
"id" mandatory for all commands when the client accepted capability
"oob".  This is rather onerous when you play with QMP by hand, and
unnecessarily so: only out-of-band commands need an ID for reliable
matching of response to command.

Revert that part of commit cf869d5317 for now, but have documentation
advise on the need to use "id" with out-of-band commands.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180703085358.13941-8-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2018-07-03 23:18:56 +02:00
Markus Armbruster
71696cc66c docs/interop/qmp: Improve OOB documentation
OOB documentation is spread over qmp-spec.txt sections 2.2.1
Capabilities and 2.3 Issuing Commands.  The amount of detail is a bit
distracting there.  Move the meat of the matter to new section 2.3.1
Out of band execution.

Throw in a few other improvements while there:

* 2.2 Server Greeting: Drop advice to search entire capabilities
  array; should be obvious.

* 3. QMP Examples

  - 3.1 Server Greeting: Update greeting to the one we expect for the
    release.  Now shows capability "oob".  Update qmp-intro.txt
    likewise.

  - 3.2 Capabilities negotiation: Show client accepting capability
    "oob".

  - 3.7 Out-of-band execution: New.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-4-armbru@redhat.com>
[Whitespace tidied up]
2018-07-03 23:09:31 +02:00
Marc-André Lureau
967c885108 qapi: add 'if' to top-level expressions
Accept 'if' key in top-level elements, accepted as string or list of
string type. The following patches will modify the test visitor to
check the value is correctly saved, and generate #if/#endif code (as a
single #if/endif line or a series for a list).

Example of 'if' key:
{ 'struct': 'TestIfStruct', 'data': { 'foo': 'int' },
  'if': 'defined(TEST_IF_STRUCT)' }

The generated code is for now *unconditional*. Later patches generate
the conditionals.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180703155648.11933-2-marcandre.lureau@redhat.com>
[Commit message and Documentation improved]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-07-03 18:21:24 +02:00
Markus Armbruster
c069821220 qmp: Say "out-of-band" instead of "Out-Of-Band"
Affects documentation and a few error messages.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-2-armbru@redhat.com>
2018-07-03 11:46:54 +02:00
Peter Xu
4bfa7974d9 docs: mention shared state protect for OOB
Out-Of-Band handlers need to protect shared state if there is any.
Mention it in the document.  Meanwhile, touch up some other places too,
either with better English, or reordering of bullets.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180620073223.31964-6-peterx@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-06-30 17:50:48 +02:00
Thomas Huth
a1d30f285e Replace '-enable-kvm' with '-accel kvm' in docs and help texts
The preferred way to select the KVM accelerator is to use "-accel kvm"
these days, so let's be consistent in our documentation and help texts.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1528866321-23886-3-git-send-email-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-28 19:05:32 +02:00
Stefan Hajnoczi
ec09f87753 trace: forbid floating point types
Only one existing trace event uses a floating point type.  Unfortunately
float and double cannot be supported since SystemTap does not have
floating point types.

Remove float and double from the whitelist and document this limitation.
Update the migrate_transferred trace event to use uint64_t instead of
double.

Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Daniel P. Berrangé <berrange@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-id: 20180621150254.4922-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-06-27 11:09:29 +01:00
Anton Nefedov
800877bb16 qapi: allow empty branches in flat unions
It often happens that just a few discriminator values imply extra data in
a flat union. Existing checks did not make possible to leave other values
uncovered. Such cases had to be worked around by either stating a dummy
(empty) type or introducing another (subset) discriminator enumeration.

Both options create redundant entities in qapi files for little profit.

With this patch it is not necessary anymore to add designated union
fields for every possible value of a discriminator enumeration.

Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Message-Id: <1529311206-76847-2-git-send-email-anton.nefedov@virtuozzo.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2018-06-22 16:33:46 +02:00
Peter Maydell
409ef9eb4a nbd patches for 2018-06-20
Add experimental x-nbd-server-add-bitmap to expose a disabled
 bitmap over NBD, in preparation for a pull model incremental
 backup scheme. Also fix a corner case protocol issue with
 NBD_CMD_BLOCK_STATUS, and add new NBD_CMD_CACHE.
 
 - Eric Blake: tests: Simplify .gitignore
 - Eric Blake: nbd/server: Reject 0-length block status request
 - Vladimir Sementsov-Ogievskiy: 0/6 NBD export bitmaps
 - Vladimir Sementsov-Ogievskiy: nbd/server: introduce NBD_CMD_CACHE
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 Comment: Public key at http://people.redhat.com/eblake/eblake.gpg
 
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Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2018-06-20-v2' into staging

nbd patches for 2018-06-20

Add experimental x-nbd-server-add-bitmap to expose a disabled
bitmap over NBD, in preparation for a pull model incremental
backup scheme. Also fix a corner case protocol issue with
NBD_CMD_BLOCK_STATUS, and add new NBD_CMD_CACHE.

- Eric Blake: tests: Simplify .gitignore
- Eric Blake: nbd/server: Reject 0-length block status request
- Vladimir Sementsov-Ogievskiy: 0/6 NBD export bitmaps
- Vladimir Sementsov-Ogievskiy: nbd/server: introduce NBD_CMD_CACHE

# gpg: Signature made Thu 21 Jun 2018 15:53:55 BST
# gpg:                using RSA key A7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>"
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>"
# gpg:                 aka "[jpeg image of size 6874]"
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-nbd-2018-06-20-v2:
  nbd/server: introduce NBD_CMD_CACHE
  docs/interop: add nbd.txt
  qapi: new qmp command nbd-server-add-bitmap
  nbd/server: implement dirty bitmap export
  nbd/server: add nbd_meta_empty_or_pattern helper
  nbd/server: refactor NBDExportMetaContexts
  nbd/server: fix trace
  nbd/server: Reject 0-length block status request
  tests: Simplify .gitignore

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-22 09:58:29 +01:00
Peter Maydell
33836a7315 TCG patch queue:
Workaround macos assembler lossage.
 Eliminate tb_lock.
 Fix TB code generation overflow.
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Merge remote-tracking branch 'remotes/rth/tags/pull-tcg-20180615' into staging

TCG patch queue:

Workaround macos assembler lossage.
Eliminate tb_lock.
Fix TB code generation overflow.

# gpg: Signature made Fri 15 Jun 2018 20:40:56 BST
# gpg:                using RSA key 64DF38E8AF7E215F
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>"
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A  05C0 64DF 38E8 AF7E 215F

* remotes/rth/tags/pull-tcg-20180615:
  tcg: Reduce max TB opcode count
  tcg: remove tb_lock
  translate-all: remove tb_lock mention from cpu_restore_state_from_tb
  cputlb: remove tb_lock from tlb_flush functions
  translate-all: protect TB jumps with a per-destination-TB lock
  translate-all: discard TB when tb_link_page returns an existing matching TB
  translate-all: introduce assert_no_pages_locked
  translate-all: add page_locked assertions
  translate-all: use per-page locking in !user-mode
  translate-all: move tb_invalidate_phys_page_range up in the file
  translate-all: work page-by-page in tb_invalidate_phys_range_1
  translate-all: remove hole in PageDesc
  translate-all: make l1_map lockless
  translate-all: iterate over TBs in a page with PAGE_FOR_EACH_TB
  tcg: move tb_ctx.tb_phys_invalidate_count to tcg_ctx
  tcg: track TBs with per-region BST's
  qht: return existing entry when qht_insert fails
  qht: require a default comparison function
  tcg/i386: Use byte form of xgetbv instruction

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-21 17:54:26 +01:00
Vladimir Sementsov-Ogievskiy
3229a835a3 docs/interop: add nbd.txt
Describe new metadata namespace: "qemu".

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20180609151758.17343-7-vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: grammar tweaks]
Signed-off-by: Eric Blake <eblake@redhat.com>
2018-06-21 09:23:59 -05:00
Cleber Rosa
c3d7e8c90d Add functional/acceptance tests infrastructure
This patch adds the very minimum infrastructure necessary for writing
and running functional/acceptance tests, including:

 * Documentation
 * The avocado_qemu.Test base test class
 * One example tests (version.py)

Additional functionality is expected to be added along the tests that
require them.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
Message-Id: <20180530184156.15634-2-crosa@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
[ehabkost: fix typo on testing.rst]
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-06-15 16:10:11 -03:00
Emilio G. Cota
0ac20318ce tcg: remove tb_lock
Use mmap_lock in user-mode to protect TCG state and the page descriptors.
In !user-mode, each vCPU has its own TCG state, so no locks needed.
Per-page locks are used to protect the page descriptors.

Per-TB locks are used in both modes to protect TB jumps.

Some notes:

- tb_lock is removed from notdirty_mem_write by passing a
  locked page_collection to tb_invalidate_phys_page_fast.

- tcg_tb_lookup/remove/insert/etc have their own internal lock(s),
  so there is no need to further serialize access to them.

- do_tb_flush is run in a safe async context, meaning no other
  vCPU threads are running. Therefore acquiring mmap_lock there
  is just to please tools such as thread sanitizer.

- Not visible in the diff, but tb_invalidate_phys_page already
  has an assert_memory_lock.

- cpu_io_recompile is !user-only, so no mmap_lock there.

- Added mmap_unlock()'s before all siglongjmp's that could
  be called in user-mode while mmap_lock is held.
  + Added an assert for !have_mmap_lock() after returning from
    the longjmp in cpu_exec, just like we do in cpu_exec_step_atomic.

Performance numbers before/after:

Host: AMD Opteron(tm) Processor 6376

                 ubuntu 17.04 ppc64 bootup+shutdown time

  700 +-+--+----+------+------------+-----------+------------*--+-+
      |    +    +      +            +           +           *B    |
      |         before ***B***                            ** *    |
      |tb lock removal ###D###                         ***        |
  600 +-+                                           ***         +-+
      |                                           **         #    |
      |                                        *B*          #D    |
      |                                     *** *         ##      |
  500 +-+                                ***           ###      +-+
      |                             * ***           ###           |
      |                            *B*          # ##              |
      |                          ** *          #D#                |
  400 +-+                      **            ##                 +-+
      |                      **           ###                     |
      |                    **           ##                        |
      |                  **         # ##                          |
  300 +-+  *           B*          #D#                          +-+
      |    B         ***        ###                               |
      |    *       **       ####                                  |
      |     *   ***      ###                                      |
  200 +-+   B  *B     #D#                                       +-+
      |     #B* *   ## #                                          |
      |     #*    ##                                              |
      |    + D##D#     +            +           +            +    |
  100 +-+--+----+------+------------+-----------+------------+--+-+
           1    8      16      Guest CPUs       48           64
  png: https://imgur.com/HwmBHXe

              debian jessie aarch64 bootup+shutdown time

  90 +-+--+-----+-----+------------+------------+------------+--+-+
     |    +     +     +            +            +            +    |
     |         before ***B***                                B    |
  80 +tb lock removal ###D###                              **D  +-+
     |                                                   **###    |
     |                                                 **##       |
  70 +-+                                             ** #       +-+
     |                                             ** ##          |
     |                                           **  #            |
  60 +-+                                       *B  ##           +-+
     |                                       **  ##               |
     |                                    ***  #D                 |
  50 +-+                               ***   ##                 +-+
     |                             * **   ###                     |
     |                           **B*  ###                        |
  40 +-+                     ****  # ##                         +-+
     |                   ****     #D#                             |
     |             ***B**      ###                                |
  30 +-+    B***B**        ####                                 +-+
     |    B *   *     # ###                                       |
     |     B       ###D#                                          |
  20 +-+   D  ##D##                                             +-+
     |      D#                                                    |
     |    +     +     +            +            +            +    |
  10 +-+--+-----+-----+------------+------------+------------+--+-+
          1     8     16      Guest CPUs        48           64
  png: https://imgur.com/iGpGFtv

The gains are high for 4-8 CPUs. Beyond that point, however, unrelated
lock contention significantly hurts scalability.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-15 08:18:48 -10:00
Emilio G. Cota
194125e3eb translate-all: protect TB jumps with a per-destination-TB lock
This applies to both user-mode and !user-mode emulation.

Instead of relying on a global lock, protect the list of incoming
jumps with tb->jmp_lock. This lock also protects tb->cflags,
so update all tb->cflags readers outside tb->jmp_lock to use
atomic reads via tb_cflags().

In order to find the destination TB (and therefore its jmp_lock)
from the origin TB, we introduce tb->jmp_dest[].

I considered not using a linked list of jumps, which simplifies
code and makes the struct smaller. However, it unnecessarily increases
memory usage, which results in a performance decrease. See for
instance these numbers booting+shutting down debian-arm:
                      Time (s)  Rel. err (%)  Abs. err (s)  Rel. slowdown (%)
------------------------------------------------------------------------------
 before                  20.88          0.74      0.154512                 0.
 after                   20.81          0.38      0.079078        -0.33524904
 GTree                   21.02          0.28      0.058856         0.67049808
 GHashTable + xxhash     21.63          1.08      0.233604          3.5919540

Using a hash table or a binary tree to keep track of the jumps
doesn't really pay off, not only due to the increased memory usage,
but also because most TBs have only 0 or 1 jumps to them. The maximum
number of jumps when booting debian-arm that I measured is 35, but
as we can see in the histogram below a TB with that many incoming jumps
is extremely rare; the average TB has 0.80 incoming jumps.

n_jumps: 379208; avg jumps/tb: 0.801099
dist: [0.0,1.0)|▄█▁▁▁▁▁▁▁▁▁▁▁ ▁▁▁▁▁▁ ▁▁▁  ▁▁▁     ▁|[34.0,35.0]

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-15 08:18:48 -10:00
Emilio G. Cota
95590e24af translate-all: discard TB when tb_link_page returns an existing matching TB
Use the recently-gained QHT feature of returning the matching TB if it
already exists. This allows us to get rid of the lookup we perform
right after acquiring tb_lock.

Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-15 08:18:42 -10:00
Emilio G. Cota
78722ed0b8 translate-all: make l1_map lockless
Groundwork for supporting parallel TCG generation.

We never remove entries from the radix tree, so we can use cmpxchg
to implement lockless insertions.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-06-15 07:42:55 -10:00
Peter Maydell
afa4f6653d bswap: Add new stn_*_p() and ldn_*_p() memory access functions
There's a common pattern in QEMU where a function needs to perform
a data load or store of an N byte integer in a particular endianness.
At the moment this is handled by doing a switch() on the size and
calling the appropriate ld*_p or st*_p function for each size.

Provide a new family of functions ldn_*_p() and stn_*_p() which
take the size as an argument and do the switch() themselves.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20180611171007.4165-2-peter.maydell@linaro.org
2018-06-15 15:23:34 +01:00
Peter Maydell
2ab09bf2f9 usb: bug fix collection, doc update.
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Merge remote-tracking branch 'remotes/kraxel/tags/usb-20180612-pull-request' into staging

usb: bug fix collection, doc update.

# gpg: Signature made Tue 12 Jun 2018 11:44:17 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20180612-pull-request:
  usb-mtp: Return error on suspicious TYPE_DATA packet from initiator
  usb-hcd-xhci-test: add a test for ccid hotplug
  usb-ccid: fix bus leak
  object: fix OBJ_PROP_LINK_UNREF_ON_RELEASE ambivalence
  bus: do not unref the added child bus on realize
  usb/dev-mtp: Fix use of uninitialized values
  usb: correctly handle Zero Length Packets
  usb: update docs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-12 15:34:34 +01:00
Gerd Hoffmann
649ae1040d usb: update docs
xhci is rock solid meanwhile.  So move it up in the docs and feature it
as prefered usb host adapter, instead of the old shy version saying "you
might want try ...".

While being at it rework the text on ehci and companion controllers too.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20180605132915.3640-1-kraxel@redhat.com
2018-06-12 12:06:52 +02:00
Ross Zwisler
11c39b5cd9 nvdimm: make persistence option symbolic
Replace the "nvdimm-cap" option which took numeric arguments such as "2"
with a more user friendly "nvdimm-persistence" option which takes symbolic
arguments "cpu" or "mem-ctrl".

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Suggested-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-06-11 22:19:57 +03:00
Peter Maydell
f67c9b693a acpi, vhost, misc: fixes, features
vDPA support, fix to vhost blk RO bit handling, some include path
 cleanups, NFIT ACPI table.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

acpi, vhost, misc: fixes, features

vDPA support, fix to vhost blk RO bit handling, some include path
cleanups, NFIT ACPI table.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Fri 01 Jun 2018 17:25:19 BST
# 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: (31 commits)
  vhost-blk: turn on pre-defined RO feature bit
  ACPI testing: test NFIT platform capabilities
  nvdimm, acpi: support NFIT platform capabilities
  tests/.gitignore: add entry for generated file
  arch_init: sort architectures
  ui: use local path for local headers
  qga: use local path for local headers
  colo: use local path for local headers
  migration: use local path for local headers
  usb: use local path for local headers
  sd: fix up include
  vhost-scsi: drop an unused include
  ppc: use local path for local headers
  rocker: drop an unused include
  e1000e: use local path for local headers
  ioapic: fix up includes
  ide: use local path for local headers
  display: use local path for local headers
  trace: use local path for local headers
  migration: drop an unused include
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-04 10:15:16 +01:00
Peter Maydell
afd76ffba9 * Linux header upgrade (Peter)
* firmware.json definition (Laszlo)
 * IPMI migration fix (Corey)
 * QOM improvements (Alexey, Philippe, me)
 * Memory API cleanups (Jay, me, Tristan, Peter)
 * WHPX fixes and improvements (Lucian)
 * Chardev fixes (Marc-André)
 * IOMMU documentation improvements (Peter)
 * Coverity fixes (Peter, Philippe)
 * Include cleanup (Philippe)
 * -clock deprecation (Thomas)
 * Disable -sandbox unless CONFIG_SECCOMP (Yi Min Zhao)
 * Configurability improvements (me)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* Linux header upgrade (Peter)
* firmware.json definition (Laszlo)
* IPMI migration fix (Corey)
* QOM improvements (Alexey, Philippe, me)
* Memory API cleanups (Jay, me, Tristan, Peter)
* WHPX fixes and improvements (Lucian)
* Chardev fixes (Marc-André)
* IOMMU documentation improvements (Peter)
* Coverity fixes (Peter, Philippe)
* Include cleanup (Philippe)
* -clock deprecation (Thomas)
* Disable -sandbox unless CONFIG_SECCOMP (Yi Min Zhao)
* Configurability improvements (me)

# gpg: Signature made Fri 01 Jun 2018 17:42:13 BST
# 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: (56 commits)
  hw: make virtio devices configurable via default-configs/
  hw: allow compiling out SCSI
  memory: Make operations using MemoryRegionIoeventfd struct pass by pointer.
  char: Remove unwanted crlf conversion
  qdev: Remove DeviceClass::init() and ::exit()
  qdev: Simplify the SysBusDeviceClass::init path
  hw/i2c: Use DeviceClass::realize instead of I2CSlaveClass::init
  hw/i2c/smbus: Use DeviceClass::realize instead of SMBusDeviceClass::init
  target/i386/kvm.c: Remove compatibility shim for KVM_HINTS_REALTIME
  Update Linux headers to 4.17-rc6
  target/i386/kvm.c: Handle renaming of KVM_HINTS_DEDICATED
  scripts/update-linux-headers: Handle kernel license no longer being one file
  scripts/update-linux-headers: Handle __aligned_u64
  virtio-gpu-3d: Define VIRTIO_GPU_CAPSET_VIRGL2 elsewhere
  gdbstub: Prevent fd leakage
  docs/interop: add "firmware.json"
  ipmi: Use proper struct reference for KCS vmstate
  vmstate: Add a VSTRUCT type
  tcg: remove softfloat from --disable-tcg builds
  qemu-options: Mark the non-functional -clock option as deprecated
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-01 18:24:16 +01:00
Ross Zwisler
9ab3aad281 nvdimm, acpi: support NFIT platform capabilities
Add a machine command line option to allow the user to control the Platform
Capabilities Structure in the virtualized NFIT.  This Platform Capabilities
Structure was added in ACPI 6.2 Errata A.

Signed-off-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-06-01 19:20:38 +03:00
Laszlo Ersek
3a0adfc9bf docs/interop: add "firmware.json"
Add a schema that describes the different uses and properties of virtual
machine firmware.

Each firmware executable installed on a host system should come with at
least one JSON file that conforms to this schema. Each file informs the
management applications about
- the firmware's properties and one possible use case / feature set,
- configuration bits that are required to run the firmware binary.

In addition, define rules for management apps for picking the highest
priority firmware JSON file when multiple such files match the search
criteria.

Cc: "Daniel P. Berrange" <berrange@redhat.com>
Cc: David Gibson <dgibson@redhat.com>
Cc: Eric Blake <eblake@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Kashyap Chamarthy <kchamart@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Thomas Huth <thuth@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Message-Id: <20180509152608.9343-1-lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-01 15:14:25 +02:00
Paolo Bonzini
257a7430e7 memory: get rid of memory_region_init_reservation
The function has been deprecated for 2.5 years, and there are just a handful
of users.  Convert them to memory_region_init_io with NULL callbacks,
and while at it pass the right device as the owner.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-06-01 14:15:10 +02:00
Igor Mammedov
d6fe3d02e9 qapi: introduce new cmd option "allow-preconfig"
New option will be used to allow commands, which are prepared/need
to run, during preconfig state. Other commands that should be able
to run in preconfig state, should be amended to not expect machine
in initialized state or deal with it.

For compatibility reasons, commands that don't use new flag
'allow-preconfig' explicitly are not permitted to run in
preconfig state but allowed in all other states like they used
to be.

Within this patch allow following commands in preconfig state:
   qmp_capabilities
   query-qmp-schema
   query-commands
   query-command-line-options
   query-status
   exit-preconfig
to allow qmp connection, basic introspection and moving to the next
state.

PS:
set-numa-node and query-hotpluggable-cpus will be enabled later in
a separate patches.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <1526057503-39287-1-git-send-email-imammedo@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[ehabkost: Changed "since 2.13" to "since 3.0"]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-05-30 13:19:09 -03:00
Peter Maydell
b706ec24f1 Merge tpm 2018/05/23 v4
-----BEGIN PGP SIGNATURE-----
 
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Merge remote-tracking branch 'remotes/stefanberger/tags/pull-tpm-2018-05-23-4' into staging

Merge tpm 2018/05/23 v4

# gpg: Signature made Sat 26 May 2018 03:52:12 BST
# gpg:                using RSA key 75AD65802A0B4211
# gpg: Good signature from "Stefan Berger <stefanb@linux.vnet.ibm.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: B818 B9CA DF90 89C2 D5CE  C66B 75AD 6580 2A0B 4211

* remotes/stefanberger/tags/pull-tpm-2018-05-23-4:
  test: Add test cases that use the external swtpm with CRB interface
  docs: tpm: add VM save/restore example and troubleshooting guide
  tpm: extend TPM TIS with state migration support
  tpm: extend TPM emulator with state migration support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-05-29 09:57:09 +01:00
Tiwei Bie
44866521bd vhost-user: support registering external host notifiers
This patch introduces VHOST_USER_PROTOCOL_F_HOST_NOTIFIER.
With this feature negotiated, vhost-user backend can register
memory region based host notifiers. And it will allow the guest
driver in the VM to notify the hardware accelerator at the
vhost-user backend directly.

Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-24 21:14:11 +03:00
Tiwei Bie
5f57fbeaaf vhost-user: allow slave to send fds via slave channel
Introduce VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD protocol
feature to allow slave to send at most 8 descriptors
in each message to master via ancillary data using the
slave channel.

Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Tiwei Bie <tiwei.bie@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-24 21:14:10 +03:00
Stefan Berger
9d1f0985a7 docs: tpm: add VM save/restore example and troubleshooting guide
Extend the docs related to TPM with specs related to VM save and
restore and a troubleshooting guide for TPM migration.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2018-05-24 12:07:04 -04:00
Jonathan Helman
b7b1264429 virtio-balloon: add hugetlb page allocation counts
qemu should read and report hugetlb page allocation
counts exported in the following kernel patch:

    commit 4c3ca37c4a4394978fd0f005625f6064ed2b9a64
    Author: Jonathan Helman <jonathan.helman@oracle.com>
    Date:   Mon Mar 19 11:00:35 2018 -0700

    virtio_balloon: export hugetlb page allocation counts

    Export the number of successful and failed hugetlb page
    allocations via the virtio balloon driver. These 2 counts
    come directly from the vm_events HTLB_BUDDY_PGALLOC and
    HTLB_BUDDY_PGALLOC_FAIL.

Signed-off-by: Jonathan Helman <jonathan.helman@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Jason Wang <jasowang@redhat.com>
2018-05-23 03:14:40 +03:00
Gerd Hoffmann
50a6fa8f93 allocate pci id for mdpy
mdpy is a sample pci device for vfio-mdev.  Not (yet) merged upstream,
patch available here:

https://www.kraxel.org/cgit/linux/commit/?h=vfio-sample-display&id=6fd86cff3d7df38ab89625b16fdd6434b1c18749

Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-05-23 03:14:40 +03:00
Dr. David Alan Gilbert
edd7080692 migration: update docs
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>
2018-05-15 22:13:08 +02:00
Alberto Garcia
603790ef3a docs: Document the new default sizes of the qcow2 caches
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>
2018-05-15 16:15:21 +02:00
Alberto Garcia
3c7d14b201 specs/qcow2: Clarify that compressed clusters have the COPIED bit reset
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>
2018-05-15 16:15:21 +02:00
Thomas Huth
af1a5c3eb4 net: Remove the deprecated "vlan" parameter
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>
2018-05-14 15:47:14 +08:00
Marc-André Lureau
cb3e7f08ae qobject: Replace qobject_incref/QINCREF qobject_decref/QDECREF
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>
2018-05-04 08:27:53 +02:00
Bharata B Rao
a324d6f166 spapr: Support ibm,dynamic-memory-v2 property
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>
2018-04-27 18:05:23 +10:00
Alexey Perevalov
9ed01779e8 migration: postcopy_blocktime documentation
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>
2018-04-25 18:02:16 +01:00
Maxime Coquelin
1c3e5a2617 vhost-user: back SET/GET_CONFIG requests with a protocol feature
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>
2018-04-09 17:35:46 +03:00
Peter Maydell
ed627b2ad3 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>
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

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
2018-03-20 15:48:34 +00:00
Dr. David Alan Gilbert
1dc61e7b37 postcopy shared docs
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>
2018-03-20 16:40:37 +02:00
Dr. David Alan Gilbert
c639187e33 vhost-user: Add VHOST_USER_POSTCOPY_END message
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>
2018-03-20 16:40:37 +02:00
Dr. David Alan Gilbert
9bb3801994 vhost+postcopy: Send address back to qemu
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>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert
6864a7b5ac vhost+postcopy: Transmit 'listen' to slave
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>
2018-03-20 05:03:28 +02:00
Dr. David Alan Gilbert
d3dff7a5a1 vhost-user: Add 'VHOST_USER_POSTCOPY_ADVISE' message
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>
2018-03-20 05:03:27 +02:00
Dr. David Alan Gilbert
9ccbfe14dd postcopy: Add vhost-user flag for postcopy and check it
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>
2018-03-20 05:03:27 +02:00
Peter Xu
378112b002 docs: update QMP documents for OOB commands
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>
2018-03-19 14:58:36 -05:00
Marc-André Lureau
7d0f982bfb qapi: generate a literal qobject for introspection
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>
2018-03-19 10:00:14 -05:00
Peter Maydell
3788c7b6e5 * 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)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* 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
2018-03-16 11:05:03 +00:00
Brijesh Singh
a9b4942f48 target/i386: add Secure Encrypted Virtualization (SEV) object
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>
2018-03-13 12:04:03 +01:00
Brijesh Singh
9b02f7bf85 docs: add AMD Secure Encrypted Virtualization (SEV)
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>
2018-03-13 12:04:03 +01:00
Pavel Dovgalyuk
7273db9d28 replay: update documentation
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>
2018-03-12 17:10:38 +01:00
Alex Bennée
d759c951f3 replay: push replay_mutex_lock up the call tree
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>
2018-03-12 17:10:36 +01:00
Pavel Dovgalyuk
bb040e006f replay: added replay log format description
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>
2018-03-12 16:12:50 +01:00
Paolo Bonzini
729c0ddd3c docs: document atomic_load_acquire and atomic_store_release
We will use them in the next patch, document what they do.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-03-12 16:12:47 +01:00
Peter Maydell
58e2e17dba Block layer patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

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
2018-03-06 11:20:44 +00:00
Markus Armbruster
1ef1cee7db Fix up dangling references to qmp-commands.* in comment and doc
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>
2018-03-02 13:48:26 -06:00
Markus Armbruster
eb815e248f qapi: Move qapi-schema.json to qapi/, rename generated files
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>
2018-03-02 13:45:57 -06:00
Markus Armbruster
bb46af41b9 docs: Correct outdated information on QAPI
* 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>
2018-03-02 13:45:51 -06:00
Markus Armbruster
bfe873e988 docs/devel/writing-qmp-commands: Update for modular QAPI
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>
2018-03-02 13:45:51 -06:00
Markus Armbruster
834a3f3498 qapi: Rename generated qmp-marshal.c to qmp-commands.c
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>
2018-03-02 13:14:10 -06:00
Markus Armbruster
fb0bc835e5 qapi-gen: New common driver for code and doc generators
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>
2018-03-02 13:14:09 -06:00
Alberto Garcia
be820971ff docs: document how to use the l2-cache-entry-size parameter
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>
2018-03-02 18:39:07 +01:00
Alberto Garcia
156b46ded3 specs/qcow2: Fix documentation of the compressed cluster descriptor
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>
2018-03-02 18:39:07 +01:00
Gonglei
efbfeb8180 cryptodev-vhost-user: add crypto session handler
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>
2018-03-01 18:26:17 +02:00
Marc-André Lureau
59fbfed9b8 docs/vmcoreinfo: detail unsupported host format behaviour
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>
2018-03-01 18:17:47 +02:00
Kashyap Chamarthy
c8945922be docs: pcie: Spell out machine type needs for PCIe features
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>
2018-03-01 16:25:37 +02:00
Tomáš Golembiovský
c5e931640c docs: document virtio-balloon stats
Document statistics added in commits

    commit a0d06486b4
    Author: Denis V. Lunev <den@openvz.org>
    Date:   Wed Feb 24 10:50:48 2016 +0300

        virtio-balloon: add 'available' counter

and

    commit bf1e7140ef
    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>
2018-03-01 16:25:37 +02:00
Peter Maydell
299a2e6fac PVRDMA implementation
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 =yZf/
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/marcel/tags/rdma-pull-request' into 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>
2018-02-19 12:51:11 +00:00
Marcel Apfelbaum
edab56321a docs: add pvrdma device documentation.
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>
2018-02-19 13:03:24 +02:00
Cornelia Huck
7aa54229cf docs: document our stable process
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>
2018-02-19 10:51:16 +01:00
Peter Maydell
648ba91596 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.
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Merge remote-tracking branch '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>
2018-02-16 12:51:40 +00:00
Greg Kurz
c2eb7f213a migration: improve documentation of postcopy-ram
This capability must have the same value on both source and destination,
otherwise migration fails (commit 875fcd013a "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>
2018-02-14 10:23:15 +00:00
Peter Maydell
685a4eaf6d Block layer patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

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>
2018-02-13 19:57:46 +00:00
Peter Maydell
bec9c64ef7 * 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)
 -----BEGIN PGP SIGNATURE-----
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* 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>
2018-02-13 18:24:08 +00:00
Peter Maydell
b734ed9de1 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>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

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>
2018-02-13 16:33:31 +00:00
Fam Zheng
c1a4b6f924 docs: Document share-rw property more thoroughly
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>
2018-02-13 12:27:17 +01:00
Pavel Pisa
e73e09481c net/can: documentation
Signed-off-by: Pavel Pisa <pisa@cmp.felk.cvut.cz>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-02-13 11:44:13 +01:00
Markus Armbruster
e688df6bc4 Include qapi/error.h exactly where needed
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]
2018-02-09 13:50:17 +01:00
Yoni Bettan
d61a363d3e pci: removed the is_express field since a uniform interface was inserted
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>
2018-02-08 21:06:41 +02:00
Fam Zheng
4eb9956034 docs: Add docs/devel/testing.rst
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>
2018-02-08 09:23:07 +08:00
Fam Zheng
e86de5e474 docs: Add section for NVMe VFIO driver
Signed-off-by: Fam Zheng <famz@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20180116060901.17413-9-famz@redhat.com>
Signed-off-by: Fam Zheng <famz@redhat.com>
2018-02-08 09:22:03 +08:00
Peter Maydell
25bfd5a75f Pull request
v2:
  * Drop merge failure from a previous pull request that broke virtio-blk on ARM
    guests
  * Add Parallels XML patch series
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Merge remote-tracking branch 'remotes/stefanha/tags/block-pull-request' into staging

Pull request

v2:
 * Drop merge failure from a previous pull request that broke virtio-blk on ARM
   guests
 * Add Parallels XML patch series

# gpg: Signature made Mon 22 Jan 2018 16:00:40 GMT
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  block/parallels: add backing support to readv/writev
  block/parallels: replace some magic numbers
  block/parallels: move some structures into header
  configure: add dependency
  docs/interop/prl-xml: description of Parallels Disk format
  block: add block_set_io_throttle virtio-blk-pci QMP example

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-24 15:28:36 +00:00
Peter Maydell
ee86981bda migration: Revert postcopy-blocktime commit set
This reverts commits
ca6011c migration: add postcopy total blocktime into query-migrate
5f32dc8 migration: add blocktime calculation into migration-test
2f7dae9 migration: postcopy_blocktime documentation
3be98be migration: calculate vCPU blocktime on dst side
01a87f0 migration: add postcopy blocktime ctx into MigrationIncomingState
31bf06a migration: introduce postcopy-blocktime capability

as they don't build on ppc32 due to trying to do atomic accesses
on types that are larger than the host pointer type.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-23 10:08:05 +00:00
Klim Kireev
5292e79f22 docs/interop/prl-xml: description of Parallels Disk format
This patch adds main information about Parallels Disk
format, which consists of DiskDescriptor.xml and other files.

Signed-off-by: Edgar Kaziakhmedov <edgar.kaziakhmedov@virtuozzo.com>
Signed-off-by: Klim Kireev <klim.kireev@virtuozzo.com>
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Denis V. Lunev <den@openvz.org>
Message-id: 20180112090122.1702-2-klim.kireev@virtuozzo.com
CC: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2018-01-22 14:02:33 +00:00
Haozhong Zhang
cb836434cd nvdimm: add 'unarmed' option
Currently the only vNVDIMM backend can guarantee the guest write
persistence is device DAX on Linux, because no host-side kernel cache
is involved in the guest access to it. The approach to detect whether
the backend is device DAX needs to access sysfs, which may not work
with SELinux.

Instead, we add the 'unarmed' option to device 'nvdimm', so that users
or management utils, which have enough knowledge about the backend,
can control the unarmed flag in guest ACPI NFIT via this option. The
guest Linux NVDIMM driver, for example, will mark the corresponding
vNVDIMM device read-only if the unarmed flag in guest NFIT is set.

The default value of 'unarmed' option is 'off' in order to keep the
backwards compatibility.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Message-Id: <20171211072806.2812-4-haozhong.zhang@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-01-19 11:18:51 -02:00
Haozhong Zhang
9837684316 hostmem-file: add "align" option
When mmap(2) the backend files, QEMU uses the host page size
(getpagesize(2)) by default as the alignment of mapping address.
However, some backends may require alignments different than the page
size. For example, mmap a device DAX (e.g., /dev/dax0.0) on Linux
kernel 4.13 to an address, which is 4K-aligned but not 2M-aligned,
fails with a kernel message like

[617494.969768] dax dax0.0: qemu-system-x86: dax_mmap: fail, unaligned vma (0x7fa37c579000 - 0x7fa43c579000, 0x1fffff)

Because there is no common approach to get such alignment requirement,
we add the 'align' option to 'memory-backend-file', so that users or
management utils, which have enough knowledge about the backend, can
specify a proper alignment via this option.

Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Message-Id: <20171211072806.2812-2-haozhong.zhang@intel.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[ehabkost: fixed typo, fixed error_setg() format string]
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2018-01-19 11:18:51 -02:00
Maxime Coquelin
7de22778e1 vhost-user: fix multiple queue specification
The number of queues supported by the slave is queried with
message VHOST_USER_GET_QUEUE_NUM, not with message
VHOST_USER_GET_PROTOCOL_FEATURES.

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>
2018-01-18 21:52:38 +02:00
Changpeng Liu
4c3e257b5e vhost-user: add new vhost user messages to support virtio config space
Add VHOST_USER_GET_CONFIG/VHOST_USER_SET_CONFIG messages which can be
used for live migration of vhost user devices, also vhost user devices
can benefit from the messages to get/set virtio config space from/to the
I/O target. For the purpose to support virtio config space change,
VHOST_USER_SLAVE_CONFIG_CHANGE_MSG message is added as the event notifier
in case virtio config space change in the slave I/O target.

Signed-off-by: Changpeng Liu <changpeng.liu@intel.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>
2018-01-18 21:52:37 +02:00
Peter Maydell
c1d5b9add7 * QemuMutex tracing improvements (Alex)
* ram_addr_t optimization (David)
 * SCSI fixes (Fam, Stefan, me)
 * do {} while (0) fixes (Eric)
 * KVM fix for PMU (Jan)
 * memory leak fixes from ASAN (Marc-André)
 * migration fix for HPET, icount, loadvm (Maria, Pavel)
 * hflags fixes (me, Tao)
 * block/iscsi uninitialized variable (Peter L.)
 * full support for GMainContexts in character devices (Peter Xu)
 * more boot-serial-test (Thomas)
 * Memory leak fix (Zhecheng)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* QemuMutex tracing improvements (Alex)
* ram_addr_t optimization (David)
* SCSI fixes (Fam, Stefan, me)
* do {} while (0) fixes (Eric)
* KVM fix for PMU (Jan)
* memory leak fixes from ASAN (Marc-André)
* migration fix for HPET, icount, loadvm (Maria, Pavel)
* hflags fixes (me, Tao)
* block/iscsi uninitialized variable (Peter L.)
* full support for GMainContexts in character devices (Peter Xu)
* more boot-serial-test (Thomas)
* Memory leak fix (Zhecheng)

# gpg: Signature made Tue 16 Jan 2018 14:15:45 GMT
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# 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: (51 commits)
  scripts/analyse-locks-simpletrace.py: script to analyse lock times
  util/qemu-thread-*: add qemu_lock, locked and unlock trace events
  cpu: flush TB cache when loading VMState
  block/iscsi: fix initialization of iTask in iscsi_co_get_block_status
  find_ram_offset: Align ram_addr_t allocation on long boundaries
  find_ram_offset: Add comments and tracing
  cpu_physical_memory_sync_dirty_bitmap: Another alignment fix
  checkpatch: Enforce proper do/while (0) style
  maint: Fix macros with broken 'do/while(0); ' usage
  tests: Avoid 'do/while(false); ' in vhost-user-bridge
  chardev: Clean up previous patch indentation
  chardev: Use goto/label instead of do/break/while(0)
  mips: Tweak location of ';' in macros
  net: Drop unusual use of do { } while (0);
  irq: fix memory leak
  cpus: unify qemu_*_wait_io_event
  icount: fixed saving/restoring of icount warp timers
  scripts/qemu-gdb/timers.py: new helper to dump timer state
  scripts/qemu-gdb: add simple tcg lock status helper
  target-i386: update hflags on Hypervisor.framework
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-16 15:45:15 +00:00
Alexey Perevalov
2f7dae9dd3 migration: postcopy_blocktime documentation
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>
2018-01-15 12:48:02 +01:00
Dr. David Alan Gilbert
2e3c8f8dbd docs: Convert migration.txt to rst
Mostly just manual conversion with very minor fixes.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2018-01-15 12:47:56 +01:00
Marc-André Lureau
de1da442ea build-sys: add a rule to print a variable
$ make print-CFLAGS
CFLAGS=-fsanitize=address -Og -g

Trick from various sources:
https://stackoverflow.com/questions/16467718/how-to-print-out-a-variable-in-makefile
https://www.cmcrossroads.com/article/printing-value-makefile-variable

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180104160523.22995-4-marcandre.lureau@redhat.com>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-01-12 13:22:02 +01:00
Michael S. Tsirkin
acc95bc850 Merge remote-tracking branch 'origin/master' into HEAD
Resolve conflicts around apb.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-01-11 22:03:50 +02:00
Stefan Hajnoczi
c3d331d28f vhost-user: document memory accesses
The vhost-user protocol specification does not define "guest address"
and "user address".  It does not explain how to access memory given such
addresses.

This patch explains how memory access works, including the IOTLB.

Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: Wei Wang <wei.w.wang@intel.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Maxime Coquelin <maxime.coquelin@redhat.com>
2017-12-22 01:42:03 +02:00
Stefan Hajnoczi
7722b1a78a vhost-user: fix indentation in protocol specification
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-12-22 01:42:03 +02:00
Chen Hanxiao
0b263ecbcf qapi-docs: fix a comment typo
s/Subection/Subsection

Signed-off-by: Chen Hanxiao <chenhanxiao@gmail.com>
Message-Id: <20171012064448.20276-1-chen_han_xiao@126.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-12-20 19:18:33 +01:00
Stefan Hajnoczi
d02d8dde0c docs: mark nested AioContext locking as a legacy API
See the patch for why nested AioContext locking is no longer allowed.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20171207201320.19284-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-12-19 10:25:09 +00:00
Kashyap Chamarthy
c117bb14ff QAPI & interop: Clarify events emitted by 'block-job-cancel'
When you cancel an in-progress 'mirror' job (or "active `block-commit`")
with QMP `block-job-cancel`, it emits the event: BLOCK_JOB_CANCELLED.
However, when `block-job-cancel` is issued *after* `drive-mirror` has
indicated (via the event BLOCK_JOB_READY) that the source and
destination have reached synchronization:

    [...] # Snip `drive-mirror` invocation & outputs
    {
      "execute":"block-job-cancel",
      "arguments":{
        "device":"virtio0"
      }
    }

    {"return": {}}

It (`block-job-cancel`) will counterintuitively emit the event
'BLOCK_JOB_COMPLETED':

    {
      "timestamp":{
        "seconds":1510678024,
        "microseconds":526240
      },
      "event":"BLOCK_JOB_COMPLETED",
      "data":{
        "device":"virtio0",
        "len":41126400,
        "offset":41126400,
        "speed":0,
        "type":"mirror"
      }
    }

But this is expected behaviour, where the _COMPLETED event indicates
that synchronization has successfully ended (and the destination now has
a point-in-time copy, which is at the time of cancel).

So add a small note to this effect in 'block-core.json'.  While at it,
also update the "Live disk synchronization -- drive-mirror and
blockdev-mirror" section in 'live-block-operations.rst'.

(Thanks: Max Reitz for reminding me of this caveat on IRC.)

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-11-27 14:59:35 +01:00
Fam Zheng
b1d1cb2728 docs: Add image locking subsection
This documents the image locking feature and explains when and how
related options can be used.

Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-11-27 11:25:41 +01:00
Stefan Hajnoczi
70b7fba987 Use HTTPS for qemu.org and other domains
qemu.org enabled HTTPS in 2017 and it should be used instead of HTTP.
There are also URLs to json.org, openvpn.net, and other domains that
support HTTPS.

This patch updates the qemu.org domains everywhere and also third-party
domains that I have checked.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171121120435.28728-3-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-11-21 13:34:13 +00:00
Stefan Hajnoczi
1b3bbc6887 Use qemu.org domain name
The owner of qemu.org has delegated authority to modify DNS records to
the QEMU Project.  This has allowed us to use the domain name without
worries about IP address changes or technical issues disrupting service.
The issues described in commit 8593898109
("Use qemu-project.org domain name") have therefore been mitigated.

This patch switches back to consistently using qemu.org instead of
qemu-project.org in documentation, version.rc, and the Windows installer
script.

The git submodules and SeaBIOS still use qemu-project.org for the time
being.  This will be fixed in the QEMU 2.12 release cycle.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171121120435.28728-2-stefanha@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-11-21 13:34:13 +00:00
Stefan Berger
83e83c34b2 specs: Extend TPM spec with TPM emulator description
Following the recent extension of QEMU with a TPM emulator device,
update the specs describing for how to interact with the device.

The results of commands run inside a Linux VM are expected to be
similar to those when the TPM passthrough device is used, so we
just reuse that.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-11-15 06:47:35 -05:00
Paolo Bonzini
ab37bfc7d6 pci-assign: Remove
Legacy PCI device assignment has been removed from Linux in 4.12,
and had been deprecated 2 years ago there.  We can remove it from
QEMU as well.

The ROM loading code was shared with Xen PCI passthrough, so move
it to hw/xen.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-11-05 14:52:10 +01:00
Peter Maydell
a8b392ac9a * TCG 8-byte atomic accesses bugfix (Andrew)
* Report disk rotation rate (Daniel)
 * Report invalid scsi-disk block size configuration (Mark)
 * KVM and memory API MemoryListener fixes (David, Maxime, Peter Xu)
 * x86 CPU hotplug crash fix (Igor)
 * Load/store API documentation (Peter Maydell)
 * Small fixes by myself and Thomas
 * qdev DEVICE_DELETED deferral (Michael)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* TCG 8-byte atomic accesses bugfix (Andrew)
* Report disk rotation rate (Daniel)
* Report invalid scsi-disk block size configuration (Mark)
* KVM and memory API MemoryListener fixes (David, Maxime, Peter Xu)
* x86 CPU hotplug crash fix (Igor)
* Load/store API documentation (Peter Maydell)
* Small fixes by myself and Thomas
* qdev DEVICE_DELETED deferral (Michael)

# gpg: Signature made Wed 18 Oct 2017 10:56:24 BST
# gpg:                using RSA key 0xBFFBD25F78C7AE83
# 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: (29 commits)
  scsi: reject configurations with logical block size > physical block size
  qdev: defer DEVICE_DEL event until instance_finalize()
  Revert "qdev: Free QemuOpts when the QOM path goes away"
  qdev: store DeviceState's canonical path to use when unparenting
  qemu-pr-helper: use new libmultipath API
  watch_mem_write: implement 8-byte accesses
  notdirty_mem_write: implement 8-byte accesses
  memory: reuse section_from_flat_range()
  kvm: simplify kvm_align_section()
  kvm: region_add and region_del is not called on updates
  kvm: fix error message when failing to unregister slot
  kvm: tolerate non-existing slot for log_start/log_stop/log_sync
  kvm: fix alignment of ram address
  memory: call log_start after region_add
  target/i386: trap on instructions longer than >15 bytes
  target/i386: introduce x86_ld*_code
  tco: add trace events
  docs/devel/loads-stores.rst: Document our various load and store APIs
  nios2: define tcg_env
  build: remove CONFIG_LIBDECNUMBER
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-19 15:38:07 +01:00
Peter Maydell
c5bbcaa4b7 pc, pci, virtio: fixes, features
A bunch of fixes all over the place.
 A new vmcore device - the user interface around it is still somewhat
 controversial, but I feel most of the code is fine, suggestions can be
 addressed by adding patches on top.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

pc, pci, virtio: fixes, features

A bunch of fixes all over the place.
A new vmcore device - the user interface around it is still somewhat
controversial, but I feel most of the code is fine, suggestions can be
addressed by adding patches on top.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Sun 15 Oct 2017 04:02:23 BST
# gpg:                using RSA key 0x281F0DB8D28D5469
# 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: (26 commits)
  tests/pxe: Test more NICs when running in SPEED=slow mode
  pc: remove useless hot_add_cpu initialisation
  isapc: Remove unnecessary migration compatibility code
  virtio-pci: Replace modern_as with direct access to modern_bar
  virtio: fix descriptor counting in virtqueue_pop
  hw/gen_pcie_root_port: make IO RO 0 on IO disabled
  pci: Validate interfaces on base_class_init
  xen/pt: Mark TYPE_XEN_PT_DEVICE as hybrid
  pci: Add INTERFACE_CONVENTIONAL_PCI_DEVICE to Conventional PCI devices
  pci: Add INTERFACE_PCIE_DEVICE to all PCIe devices
  pci: Add interface names to hybrid PCI devices
  pci: conventional-pci-device and pci-express-device interfaces
  PCI: PCIe access should always be little endian
  virtio/pci/migration: Convert to VMState
  hw/pci-bridge/pcie_pci_bridge: properly handle MSI unavailability case
  pci: allow 32-bit PCI IO accesses to pass through the PCI bridge
  virtio/vhost: reset dev->log after syncing
  MAINTAINERS: add Dump maintainers
  scripts/dump-guest-memory.py: add vmcoreinfo
  kdump: set vmcoreinfo location
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-10-16 17:29:16 +01:00
Peter Maydell
b7ecba0f6f docs/devel/loads-stores.rst: Document our various load and store APIs
QEMU has a wide selection of different functions for doing
loads and stores; provide some overview documentation of
what they do and how to pick which one to use.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1507813181-11860-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-10-16 18:03:52 +02:00
Marc-André Lureau
d9feb51772 dump: update phys_base header field based on VMCOREINFO content
If the guest note is VMCOREINFO, try to get phys_base from it.

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>
2017-10-15 05:54:40 +03:00
Marc-André Lureau
6e43353f10 hw/misc: add vmcoreinfo device
See docs/specs/vmcoreinfo.txt for details.

"etc/vmcoreinfo" fw_cfg entry is added when using "-device vmcoreinfo".

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>
2017-10-15 05:54:40 +03:00
Stefan Berger
8dc6701722 specs: Describe the TPM support in QEMU
This patch adds a description of the current TPM support in QEMU
to the specs.

Several public specs are referenced via their landing page on the
trustedcomputinggroup.org website.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
2017-10-13 07:34:33 -04:00
Peter Maydell
ab16152926 Migration pull 2017-09-27
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Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20170927a' into staging

Migration pull 2017-09-27

# gpg: Signature made Wed 27 Sep 2017 14:56:23 BST
# gpg:                using RSA key 0x0516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@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: 45F5 C71B 4A0C B7FB 977A  9FA9 0516 331E BC5B FDE7

* remotes/dgilbert/tags/pull-migration-20170927a:
  migration: Route more error paths
  migration: Route errors up through vmstate_save
  migration: wire vmstate_save_state errors up to vmstate_subsection_save
  migration: Check field save returns
  migration: check pre_save return in vmstate_save_state
  migration: pre_save return int
  migration: disable auto-converge during bulk block migration

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-09-27 22:44:51 +01:00
Peter Maydell
cfe4cade05 Block layer patches
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Merge remote-tracking branch 'remotes/kevin/tags/for-upstream' into staging

Block layer patches

# gpg: Signature made Tue 26 Sep 2017 14:52:32 BST
# gpg:                using RSA key 0x7F09B272C88F2FD6
# 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: (24 commits)
  block/qcow2-bitmap: fix use of uninitialized pointer
  qemu-iotests: add shrinking image test
  qcow2: add shrink image support
  qcow2: add qcow2_cache_discard
  qemu-img: add --shrink flag for resize
  iotests: fix 181: enable postcopy-ram capability on target
  qemu-iotests: Test change-backing-file command
  block: Fix permissions after bdrv_reopen()
  block: reopen: Queue children after their parents
  block: Base permissions on rw state after reopen
  block: Add reopen queue to bdrv_check_perm()
  block: Add reopen_queue to bdrv_child_perm()
  qemu-io: Drop write permissions before read-only reopen
  block: Clean up some bad code in the vvfat driver
  block/throttle-groups.c: allocate RestartData on the heap
  throttle: Assert that bkt->max is valid in throttle_compute_wait()
  iotests: Print full path of bad output if mismatch
  iotests: use virtio aliases for 067
  iotests: use -ccw on s390x for 051
  iotests: use -ccw on s390x for 040, 139, and 182
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-09-27 16:48:39 +01:00
Dr. David Alan Gilbert
44b1ff319c migration: pre_save return int
Modify the pre_save method on VMStateDescription to return an int
rather than void so that it potentially can fail.

Changed zillions of devices to make them return 0; the only
case I've made it return non-0 is hw/intc/s390_flic_kvm.c that already
had an error_report/return case.

Note: If you add an error exit in your pre_save you must emit
an error_report to say why.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20170925112917.21340-2-dgilbert@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-09-27 11:35:59 +01:00
Stefan Hajnoczi
78aa8aa019 docs: add qemu-block-drivers(7) man page
Block driver documentation is available in qemu-doc.html.  It would be
convenient to have documentation for formats, protocols, and filter
drivers in a man page.

Extract the relevant part of qemu-doc.html into a new file called
docs/qemu-block-drivers.texi.  This file can also be built as a
stand-alone document (man, html, etc).

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
2017-09-26 14:46:23 +02:00
Thomas Huth
77fc026cdf trivial: Add missing "-m" parameter in docs/memory-hotplug.txt
The example obviously lacks the "-m" parameter.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-09-26 09:11:22 +03:00
Paolo Bonzini
fe8fc5ae5c scsi: add multipath support to qemu-pr-helper
Proper support of persistent reservation for multipath devices requires
communication with the multipath daemon, so that the reservation is
registered and applied when a path comes up.  The device mapper
utilities provide a library to do so; this patch makes qemu-pr-helper.c
detect multipath devices and, when one is found, delegate the operation
to libmpathpersist.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-22 21:07:27 +02:00
Paolo Bonzini
b855f8d175 scsi: build qemu-pr-helper
Introduce a privileged helper to run persistent reservation commands.
This lets virtual machines send persistent reservations without using
CAP_SYS_RAWIO or out-of-tree patches.  The helper uses Unix permissions
and SCM_RIGHTS to restrict access to processes that can access its socket
and prove that they have an open file descriptor for a raw SCSI device.

The next patch will also correct the usage of persistent reservations
with multipath devices.

It would also be possible to support for Linux's IOC_PR_* ioctls in
the future, to support NVMe devices.  For now, however, only SCSI is
supported.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-22 21:07:24 +02:00
Paolo Bonzini
7c9e527659 scsi, file-posix: add support for persistent reservation management
It is a common requirement for virtual machine to send persistent
reservations, but this currently requires either running QEMU with
CAP_SYS_RAWIO, or using out-of-tree patches that let an unprivileged
QEMU bypass Linux's filter on SG_IO commands.

As an alternative mechanism, the next patches will introduce a
privileged helper to run persistent reservation commands without
expanding QEMU's attack surface unnecessarily.

The helper is invoked through a "pr-manager" QOM object, to which
file-posix.c passes SG_IO requests for PERSISTENT RESERVE OUT and
PERSISTENT RESERVE IN commands.  For example:

  $ qemu-system-x86_64
      -device virtio-scsi \
      -object pr-manager-helper,id=helper0,path=/var/run/qemu-pr-helper.sock
      -drive if=none,id=hd,driver=raw,file.filename=/dev/sdb,file.pr-manager=helper0
      -device scsi-block,drive=hd

or:

  $ qemu-system-x86_64
      -device virtio-scsi \
      -object pr-manager-helper,id=helper0,path=/var/run/qemu-pr-helper.sock
      -blockdev node-name=hd,driver=raw,file.driver=host_device,file.filename=/dev/sdb,file.pr-manager=helper0
      -device scsi-block,drive=hd

Multiple pr-manager implementations are conceivable and possible, though
only one is implemented right now.  For example, a pr-manager could:

- talk directly to the multipath daemon from a privileged QEMU
  (i.e. QEMU links to libmpathpersist); this makes reservation work
  properly with multipath, but still requires CAP_SYS_RAWIO

- use the Linux IOC_PR_* ioctls (they require CAP_SYS_ADMIN though)

- more interestingly, implement reservations directly in QEMU
  through file system locks or a shared database (e.g. sqlite)

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-22 01:06:51 +02:00
Paolo Bonzini
447b0d0b9e memory: avoid "resurrection" of dead FlatViews
It's possible for address_space_get_flatview() as it currently stands
to cause a use-after-free for the returned FlatView, if the reference
count is incremented after the FlatView has been replaced by a writer:

   thread 1             thread 2             RCU thread
  -------------------------------------------------------------
   rcu_read_lock
   read as->current_map
                        set as->current_map
                        flatview_unref
                           '--> call_rcu
   flatview_ref
     [ref=1]
   rcu_read_unlock
                                             flatview_destroy
   <badness>

Since FlatViews are not updated very often, we can just detect the
situation using a new atomic op atomic_fetch_inc_nonzero, similar to
Linux's atomic_inc_not_zero, which performs the refcount increment only if
it hasn't already hit zero.  This is similar to Linux commit de09a9771a53
("CRED: Fix get_task_cred() and task_state() to not resurrect dead
credentials", 2010-07-29).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21 23:19:37 +02:00
Paolo Bonzini
db81b99537 atomic: update documentation
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-21 14:47:42 +02:00
Paolo Bonzini
ebedb37c8d Makefile: Remove libqemustub.a
Using two libraries (libqemuutil.a and libqemustub.a) would sometimes
result in circular dependencies. To avoid these issues let's just
combine both into a single library that functions as both.

Signed-off-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <54e6458745493d10901964624479a7d9a872f481.1503077821.git.alistair.francis@xilinx.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-09-19 16:20:31 +02:00
Aleksandr Bezzubikov
c1800a1627 docs: update documentation considering PCIE-PCI bridge
Signed-off-by: Aleksandr Bezzubikov <zuban32s@gmail.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Tested-by: Marcel Apfelbaum <marcel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-09-08 16:15:17 +03:00
Wang Yong
861d51e62b colo-compare: Update the COLO document to add the IOThread configuration
Update colo-proxy.txt,add IOThread configuration.
Later we have to configure IOThread,if not COLO can not work.

Reviewed-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Wang Yong <wang.yong155@zte.com.cn>
Signed-off-by: Wang Guang <wang.guang55@zte.com.cn>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2017-09-08 09:34:40 +08:00
Markus Armbruster
5b5f825d44 qapi: Generate FOO_str() macro for QAPI enum FOO
The next commit will put it to use.  May look pointless now, but we're
going to change the FOO_lookup's type, and then it'll help.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1503564371-26090-13-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-09-04 13:09:13 +02:00
Markus Armbruster
64355088e0 qapi: Update qapi-code-gen.txt examples to match current code
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1503564371-26090-2-git-send-email-armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
2017-09-04 13:09:13 +02:00
Felipe Franciosi
5df04f1762 vhost-user: fix legacy cross-endian configurations
Currently, vhost-user does not implement any means for notifying the
backend about guest endianess. This commit introduces a new message
called VHOST_USER_SET_VRING_ENDIAN which is analogous to the ioctl()
called VHOST_SET_VRING_ENDIAN used for kernel vhost backends. Such
message is necessary for backends supporting legacy (pre-1.0) virtio
devices running in big-endian guests.

Signed-off-by: Felipe Franciosi <felipe@nutanix.com>
Signed-off-by: Mike Cui <cui@nutanix.com>
2017-08-02 00:13:25 +03:00
Stefan Hajnoczi
d87aa13803 trace: add trace_event_get_state_backends()
Code that checks dstate is unaware of SystemTap and LTTng UST dstate, so
the following trace event will not fire when solely enabled by SystemTap
or LTTng UST:

  if (trace_event_get_state(TRACE_MY_EVENT)) {
      str = g_strdup_printf("Expensive string to generate ...",
                            ...);
      trace_my_event(str);
      g_free(str);
  }

Add trace_event_get_state_backends() to fetch backend dstate.  Those
backends that use QEMU dstate fetch it as part of
generate_h_backend_dstate().

Update existing trace_event_get_state() callers to use
trace_event_get_state_backends() instead.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170731140718.22010-3-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-08-01 12:13:07 +01:00
Philippe Mathieu-Daudé
25e11d8774 docs: fix broken paths to docs/specs/ivshmem-spec.txt
When this file was rewritten/renamed in fdee2025dd,
a reference path was not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:13:01 +03:00
Philippe Mathieu-Daudé
f31fd5cfd7 docs: fix broken paths to docs/config/ich9-ehci-uhci.cfg
With the move of some docs/ to docs/devel/ on ac06724a71,
a reference path was not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:12:55 +03:00
Philippe Mathieu-Daudé
b208ac07ea docs: fix broken paths to docs/devel/atomics.txt
With the move of some docs/ to docs/devel/ on ac06724a71,
a couple of references were not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:12:47 +03:00
Philippe Mathieu-Daudé
b3125e73d4 docs: fix broken paths to docs/devel/qapi-code-gen.txt
With the move of some docs to docs/interop on ac06724a71,
a couple of references were not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:12:41 +03:00
Philippe Mathieu-Daudé
f3fdeb9c97 docs: fix broken paths to docs/interop/qcow2.txt
With the move of some docs to docs/interop on d59157ea05,
a reference path was not updated.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:12:35 +03:00
Cleber Rosa
cfb41b8868 docs: fix broken paths to docs/interop dir
With the move of some docs to docs/interop on d59157e, a couple of
references were not updated.

Signed-off-by: Cleber Rosa <crosa@redhat.com>
[PMD: fixed a typo and another reference of docs/interop/qmp-spec.txt]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-07-31 13:06:52 +03:00
Markus Armbruster
4d2d5c41a9 qapi: Introduce a first class 'null' type
I expect the 'null' type to be useful mostly for members of alternate
types.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-07-24 13:35:11 +02:00
Peter Maydell
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/cody/tags/block-pull-request' into staging

# gpg: Signature made Tue 18 Jul 2017 05:15:03 BST
# gpg:                using RSA key 0xBDBE7B27C0DE3057
# gpg: Good signature from "Jeffrey Cody <jcody@redhat.com>"
# gpg:                 aka "Jeffrey Cody <jeff@codyprime.org>"
# gpg:                 aka "Jeffrey Cody <codyprime@gmail.com>"
# Primary key fingerprint: 9957 4B4D 3474 90E7 9D98  D624 BDBE 7B27 C0DE 3057

* remotes/cody/tags/block-pull-request:
  live-block-ops.txt: Rename, rewrite, and improve it
  bitmaps.md: Convert to rST; move it into 'interop' dir

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-18 20:29:36 +01:00
Peter Maydell
a778cd5610 -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
 
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 =z3QF
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Mon 17 Jul 2017 13:17:17 BST
# gpg:                using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@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: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  virtio-net: fix offload ctrl endian
  virtion-net: Prefer is_power_of_2()
  docs/colo-proxy.txt: Update colo-proxy usage of net driver with vnet_header
  net/filter-rewriter.c: Make filter-rewriter support vnet_hdr_len
  net/colo-compare.c: Add vnet packet's tcp/udp/icmp compare
  net/colo.c: Add vnet packet parse feature in colo-proxy
  net/colo-compare.c: Make colo-compare support vnet_hdr_len
  net/colo-compare.c: Introduce parameter for compare_chr_send()
  net/colo.c: Make vnet_hdr_len as packet property
  net/filter-mirror.c: Add new option to enable vnet support for filter-redirector
  net/filter-mirror.c: Make filter mirror support vnet support.
  net/filter-mirror.c: Introduce parameter for filter_send()
  net/net.c: Add vnet_hdr support in SocketReadState
  net: Add vnet_hdr_len arguments in NetClientState

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-18 09:16:43 +01:00
Kashyap Chamarthy
8508eee740 live-block-ops.txt: Rename, rewrite, and improve it
This patch documents (including their QMP invocations) all the four
major kinds of live block operations:

  - `block-stream`
  - `block-commit`
  - `drive-mirror` (& `blockdev-mirror`)
  - `drive-backup` (& `blockdev-backup`)

Things considered while writing this document:

  - Use reStructuredText as markup language (with the goal of generating
    the HTML output using the Sphinx Documentation Generator).  It is
    gentler on the eye, and can be trivially converted to different
    formats.  (Another reason: upstream QEMU is considering to switch to
    Sphinx, which uses reStructuredText as its markup language.)

  - Raw QMP JSON output vs. 'qmp-shell'.  I debated with myself whether
    to only show raw QMP JSON output (as that is the canonical
    representation), or use 'qmp-shell', which takes key-value pairs.  I
    settled on the approach of: for the first occurrence of a command,
    use raw JSON; for subsequent occurrences, use 'qmp-shell', with an
    occasional exception.

  - Usage of `-blockdev` command-line.

  - Usage of 'node-name' vs. file path to refer to disks.  While we have
    `blockdev-{mirror, backup}` as 'node-name'-alternatives for
    `drive-{mirror, backup}`, the `block-commit` command still operates
    on file names for parameters 'base' and 'top'.  So I added a caveat
    at the beginning to that effect.

    Refer this related thread that I started (where I learnt
    `block-stream` was recently reworked to accept 'node-name' for 'top'
    and 'base' parameters):
    https://lists.nongnu.org/archive/html/qemu-devel/2017-05/msg06466.html
    "[RFC] Making 'block-stream', and 'block-commit' accept node-name"

All commands showed in this document were tested while documenting.

Thanks: Eric Blake for the section: "A note on points-in-time vs file
names".  This useful bit was originally articulated by Eric in his
KVMForum 2015 presentation, so I included that specific bit in this
document.

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170717105205.32639-3-kchamart@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-07-18 00:11:01 -04:00
Kashyap Chamarthy
7746cf8aab bitmaps.md: Convert to rST; move it into 'interop' dir
This is part of the on-going effort to convert QEMU upstream
documentation syntax to reStructuredText (rST).

The conversion to rST was done using:

    $ pandoc -f markdown -t rst bitmaps.md -o bitmaps.rst

Then, make a couple of small syntactical adjustments.  While at it,
reword a statement to avoid ambiguity.  Addressing the feedback from
this thread:

    https://lists.nongnu.org/archive/html/qemu-devel/2017-06/msg05428.html

Signed-off-by: Kashyap Chamarthy <kchamart@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170717105205.32639-2-kchamart@redhat.com
Signed-off-by: Jeff Cody <jcody@redhat.com>
2017-07-18 00:11:01 -04:00
Peter Maydell
5a477a7806 -----BEGIN PGP SIGNATURE-----
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Merge remote-tracking branch 'remotes/stefanha/tags/tracing-pull-request' into staging

# gpg: Signature made Mon 17 Jul 2017 13:11:17 BST
# gpg:                using RSA key 0x9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>"
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>"
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/tracing-pull-request:
  trace: update old trace events in docs
  trace: [trivial] Statically enable all guest events
  trace: [tcg, trivial] Re-align generated code
  trace: [tcg] Do not generate TCG code to trace dynamically-disabled events
  exec: [tcg] Use different TBs according to the vCPU's dynamic tracing state
  trace: [tcg] Delay changes to dynamic state when translating
  trace: Allocate cpu->trace_dstate in place

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-17 18:39:32 +01:00
Zhang Chen
2484ff0624 docs/colo-proxy.txt: Update colo-proxy usage of net driver with vnet_header
Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2017-07-17 20:13:54 +08:00
Stefan Hajnoczi
304187c51c trace: update old trace events in docs
Commit c5f1ad429c ("block: Remove
bdrv_aio_readv/writev/flush()") removed
bdrv_aio_readv()/bdrv_aio_writev() so the example in the tracing
documentation is no longer valid.

Reported-by: Wang Dong <dongdwdw@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-id: 20170714133111.27359-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-07-17 13:11:13 +01:00
Peter Maydell
2286468fac docs/devel/memory.txt: Add section about RAM migration
Add a section to docs/devel/memory.txt about migration of
the backing memory for RAM regions.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 1499438577-7674-12-git-send-email-peter.maydell@linaro.org
2017-07-14 17:59:42 +01:00
Vladimir Sementsov-Ogievskiy
b348c262cc specs/qcow2: do not use wording 'bitmap header'
A bitmap directory entry is sometimes called a 'bitmap header'. This
patch leaves only one name - 'bitmap directory entry'. The name 'bitmap
header' creates misunderstandings with 'qcow2 header' and 'qcow2 bitmap
header extension' (which is extension of qcow2 header)

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170628120530.31251-3-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:44:57 +02:00
Vladimir Sementsov-Ogievskiy
b5d1f15488 specs/qcow2: fix bitmap granularity qemu-specific note
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Message-id: 20170628120530.31251-2-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:44:57 +02:00
Daniel P. Berrange
7674b5754e qcow2: extend specification to cover LUKS encryption
Update the qcow2 specification to describe how the LUKS header is
placed inside a qcow2 file, when using LUKS encryption for the
qcow2 payload instead of the legacy AES-CBC encryption

Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170623162419.26068-13-berrange@redhat.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
2017-07-11 17:44:56 +02:00
Paolo Bonzini
d59157ea05 docs: create interop/ subdirectory
This is for the future interoperability & management guide.  It includes
the QAPI docs, including the automatically generated ones, other socket
protocols (vhost-user, VNC), and the qcow2 file format.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-06-15 11:18:39 +02:00
Paolo Bonzini
ac06724a71 docs: create config/, devel/ and spin/ subdirectories
Developer documentation should be its own manual.  As a start, move all
developer-oriented files to a separate directory.

Also move non-text files to their own directories: docs/config/ for
QEMU -readconfig input, and docs/spin/ for formal models to be used
with the SPIN model checker.

Reviewed-by: Daniel P. Berrange <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-06-07 18:22:03 +02:00
Markus Armbruster
7a0bbd55e5 docs/qdev-device-use.txt: update section Default Devices
Resynchronize the table of default device suppressions with vl.c's
default_list[].

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-06-04 18:42:55 +03:00
Markus Armbruster
1c9f3b887b docs qemu-doc: Avoid ide-drive, it's deprecated
Suggested-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-06-04 18:42:55 +03:00
Maxime Coquelin
6dcdd06e3b spec/vhost-user spec: Add IOMMU support
This patch specifies and implements the master/slave communication
to support device IOTLB in slave.

The vhost_iotlb_msg structure introduced for kernel backends is
re-used, making the design close between the two backends.

An exception is the use of the secondary channel to enable the
slave to send IOTLB miss requests to the master.

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>
2017-06-02 18:57:17 +03:00
Marc-André Lureau
4bbeeba023 vhost-user: add slave-req-fd support
Learn to give a socket to the slave to let him make requests to the
master.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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>
2017-06-02 18:57:17 +03:00
Thomas Huth
a92ff8c123 qemu-doc: Update to use the new way of attaching USB devices
The preferred way of adding USB devices is via "-device" and
"device_add" nowadays, so let's start to get rid of "-usbdevice"
and "usb_add" in the documentation. While we're at it, also
add the new USB devices there which have been added to QEMU
during the last years, and get rid of the old "vendorid" and
"productid" parameters of "-usbdevice serial" which have been
removed in QEMU version 0.14.0 already.

Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1494256429-31720-1-git-send-email-thuth@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-05-12 12:26:40 +02:00
Stefan Hajnoczi
7609ffb919 trace: fix tcg tracing build breakage
Commit 0ab8ed18a6 ("trace: switch to
modular code generation for sub-directories") forgot to convert "tcg"
trace events to the modular code generation approach where each
sub-directory has its own trace-events file.

This patch fixes compilation for "tcg" trace events.  Currently they are
only used in the root ./trace-events file.

"tcg" trace events can only be used in the root ./trace-events file for
the time being.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Tested-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20170327131718.18268-1-stefanha@redhat.com
Suggested-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-03-28 11:07:46 +01:00
Markus Armbruster
1d8bda128d qapi: The #optional tag is redundant, drop
We traditionally mark optional members #optional in the doc comment.
Before commit 3313b61, this was entirely manual.

Commit 3313b61 added some automation because its qapi2texi.py relied
on #optional to determine whether a member is optional.  This is no
longer the case since the previous commit: the only thing qapi2texi.py
still does with #optional is stripping it out.  We still reject bogus
qapi-schema.json and six places for qga/qapi-schema.json.

Thus, you can't actually rely on #optional to see whether something is
optional.  Yet we still make people add it manually.  That's just
busy-work.

Drop the code to check, fix up and strip out #optional, along with all
instances of #optional.  To keep it out, add code to reject it, to be
dropped again once the dust settles.

No change to generated documentation.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1489582656-31133-18-git-send-email-armbru@redhat.com>
2017-03-16 07:13:02 +01:00
Markus Armbruster
bd7f974796 qapi: Clean up build of generated documentation
Rename intermediate qemu-qapi.texi to qemu-qmp-qapi.texi to match its
user qemu-qmp-ref.texi, just like qemu-ga-qapi.texi matches
qemu-ga-ref.texi.

Build the intermediate .texi next to the sources and the final output
in docs/ instead of dumping them into the build root.

Fix version.texi dependencies so that only the targets that actually
need it depend on it.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1489582656-31133-8-git-send-email-armbru@redhat.com>
2017-03-16 07:13:02 +01:00
Markus Armbruster
2cfbae3c42 qapi: Have each QAPI schema declare its name rule violations
qapi.py has a hardcoded white-list of type names that may violate the
rule on use of upper and lower case.  Add a new pragma directive
'name-case-whitelist', and use it to replace the hard-coded
white-list.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1489582656-31133-7-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-16 07:13:02 +01:00
Markus Armbruster
1554a8fae9 qapi: Have each QAPI schema declare its returns white-list
qapi.py has a hardcoded white-list of command names that may violate
the rules on permitted return types.  Add a new pragma directive
'returns-whitelist', and use it to replace the hard-coded white-list.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1489582656-31133-6-git-send-email-armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-16 07:13:02 +01:00
Markus Armbruster
700dc9f503 docs/qapi-code-gen.txt: Drop confusing reference to 'gen'
Section "Commands" qualifies its rules on permitted argument and
return types "with one exception noted below when 'gen' is used".  The
note went away in commit 2d21291.  Clean up the dangling references.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <1489582656-31133-5-git-send-email-armbru@redhat.com>
2017-03-16 07:13:01 +01:00
Markus Armbruster
bc52d03ff5 qapi: Make doc comments optional where we don't need them
Since we added the documentation generator in commit 3313b61, doc
comments are mandatory.  That's a very good idea for a schema that
needs to be documented, but has proven to be annoying for testing.

Make doc comments optional again, but add a new directive

    { 'pragma': { 'doc-required': true } }

to let a QAPI schema require them.

Add test cases for the new pragma directive.  While there, plug a
minor hole in includ directive test coverage.

Require documentation in the schemas we actually want documented:
qapi-schema.json and qga/qapi-schema.json.

We could probably make qapi2texi.py cope with incomplete
documentation, but for now, simply make it refuse to run unless the
schema has 'doc-required': true.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <1489582656-31133-3-git-send-email-armbru@redhat.com>
[qapi-code-gen.txt wording tweaked]
Reviewed-by: Eric Blake <eblake@redhat.com>
2017-03-16 07:13:01 +01:00
Thomas Huth
c0d9f7d0bc docs: Add a note about mixing bootindex with "-boot order"
Occasionally the users try to mix the bootindex properties with the
"-boot order" parameter - and this likely does not give the expected
results. So let's add a proper statement that these two concepts
should not be used together.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1488303601-23741-1-git-send-email-thuth@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-03-14 13:26:36 +01:00
Markus Armbruster
79f7598164 docs/qapi-code-gen.txt: Clarify naming rules
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <1488317230-26248-24-git-send-email-armbru@redhat.com>
2017-03-07 16:07:48 +01:00
Markus Armbruster
048abb7b20 qapi: Drop unused non-strict qobject input visitor
The split between tests/test-qobject-input-visitor.c and
tests/test-qobject-input-strict.c now makes less sense than ever.  The
next commit will take care of that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1488544368-30622-20-git-send-email-armbru@redhat.com>
2017-03-05 09:14:19 +01:00
Peter Maydell
9a81b792cc virtio, pc: fixes, features
virtio support for region caches broke a bunch of stuff - fixing most of
 it though it's not ideal.  Still pondering the right way to fix it.
 New: VM gen ID and hotplug for PXB.
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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 =ITdO
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/mst/tags/for_upstream' into staging

virtio, pc: fixes, features

virtio support for region caches broke a bunch of stuff - fixing most of
it though it's not ideal.  Still pondering the right way to fix it.
New: VM gen ID and hotplug for PXB.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

# gpg: Signature made Thu 02 Mar 2017 06:19:17 GMT
# gpg:                using RSA key 0x281F0DB8D28D5469
# 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:
  hw/pxb-pcie: fix PCI Express hotplug support
  tests/acpi: update DSDT after last patch
  acpi: simplify _OSC
  virtio: unbreak virtio-pci with IOMMU after caching ring translations
  virtio: add missing region cache init in virtio_load()
  virtio: invalidate memory in vring_set_avail_event()
  virtio: guard vring access when setting notification
  virtio: check for vring setup in virtio_queue_empty
  MAINTAINERS: Add VM Generation ID entries
  tests: Move reusable ACPI code into a utility file
  qmp/hmp: add query-vm-generation-id and 'info vm-generation-id' commands
  ACPI: Add Virtual Machine Generation ID support
  ACPI: Add vmgenid blob storage to the build tables
  docs: VM Generation ID device description
  linker-loader: Add new 'write pointer' command

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-03 10:09:03 +00:00
Peter Maydell
6835504887 audio: replay support, sdl2 fix.
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 =+nSM
 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/kraxel/tags/pull-audio-20170301-1' into staging

audio: replay support, sdl2 fix.

# gpg: Signature made Wed 01 Mar 2017 15:38:09 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-audio-20170301-1:
  audio/sdlaudio: Allow audio playback with SDL2
  audio: make audio poll timer deterministic
  replay: add record/replay for audio passthrough

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-02 20:31:49 +00:00
Peter Maydell
b49d31a05a docs: update sample configuration files
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v2.0.22 (GNU/Linux)
 
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/kraxel/tags/pull-docs-20170301-1' into staging

docs: update sample configuration files

# gpg: Signature made Wed 01 Mar 2017 13:43:34 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-docs-20170301-1:
  mach-virt: Provide sample configuration files
  q35: Improve sample configuration files

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-03-02 19:27:30 +00:00
Ben Warren
20f5d14dc9 docs: VM Generation ID device description
This patch is based off an earlier version by
Gal Hammer (ghammer@redhat.com)

Requirements section, ASCII diagrams and overall help
provided by Laszlo Ersek (lersek@redhat.com)

Signed-off-by: Gal Hammer <ghammer@redhat.com>
Signed-off-by: Ben Warren <ben@skyportsystems.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2017-03-02 07:14:26 +02:00
Pavel Dovgalyuk
3d4d16f4dc replay: add record/replay for audio passthrough
This patch adds recording and replaying audio data. Is saves synchronization
information for audio out and inputs from the microphone.

v2: removed unneeded whitespace change

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-id: 20170202055054.4848.94901.stgit@PASHA-ISP.lan02.inno

[ kraxel: add qemu/error-report.h include to fix osx build failure ]

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-01 15:11:44 +01:00
Andrea Bolognani
166d434685 mach-virt: Provide sample configuration files
These are very much like the sample configuration files
for q35, and can be used both as documentation and as
a starting point for creating your own guest.

Two sample configuration files are provided:

  * mach-virt-graphical.cfg can be used to start a
    fully-featured (USB, graphical console, etc.)
    guest that uses VirtIO devices;

  * mach-virt-serial.cfg is similar but has a minimal
    set of devices and uses the serial console.

All configuration files are fully commented and neatly
organized.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Message-id: 1487326479-8664-3-git-send-email-abologna@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-01 14:40:40 +01:00
Andrea Bolognani
9ca019c1dd q35: Improve sample configuration files
Instead of having a single sample configuration file,
we now have several:

  * q35-emulated.cfg documents the default devices QEMU
    adds to a q35 guest and the additional devices that
    are pretty much guaranteed to be present in a
    physical q35-based machine;

  * q35-virtio-graphical.cfg can be used to start a
    fully-featured (USB, graphical console, audio, etc.)
    guest that uses VirtIO instead of emulated devices;

  * q35-virtio-serial.cfg is similar but has a minimal
    set of devices and uses the serial console.

All configuration files are fully commented and neatly
organized.

Signed-off-by: Andrea Bolognani <abologna@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Message-id: 1487326479-8664-2-git-send-email-abologna@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2017-03-01 14:40:40 +01:00
Dr. David Alan Gilbert
0c1f4036db postcopy: Add doc about hugepages and postcopy
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20170224182844.32452-16-dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-02-28 11:30:24 +00:00
Dr. David Alan Gilbert
5f9412bbac migration: Update docs to discourage version bumps
Version bumps break backwards migration; update the docs
to explain to people that's bad and how to avoid it.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20170210110359.8210-1-dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2017-02-28 11:30:22 +00:00
Alex Bennée
c6489dd921 docs: new design document multi-thread-tcg.txt
This documents the current design for upgrading TCG emulation to take
advantage of modern CPUs by running a thread-per-CPU. The document goes
through the various areas of the code affected by such a change and
proposes design requirements for each part of the solution.

The text marked with (Current solution[s]) to document what the current
approaches being used are.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <rth@twiddle.net>
2017-02-24 10:32:45 +00:00
Gerd Hoffmann
72a810f411 xhci: add qemu xhci controller
Turn existing TYPE_XHCI into an abstract base class.
Create two child classes, TYPE_NEC_XHCI (same name as old xhci
controller) and TYPE_QEMU_XHCI (using an ID from our namespace).

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Message-id: 1486382139-30630-3-git-send-email-kraxel@redhat.com
2017-02-21 08:11:43 +01:00
Peter Maydell
56f9e46b84 QAPI patches for 2017-02-20
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 -----END PGP SIGNATURE-----

Merge remote-tracking branch 'remotes/armbru/tags/pull-qapi-2017-02-20' into staging

QAPI patches for 2017-02-20

# gpg: Signature made Mon 20 Feb 2017 13:31:12 GMT
# gpg:                using RSA key 0x3870B400EB918653
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>"
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>"
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* remotes/armbru/tags/pull-qapi-2017-02-20:
  Makefile: Put VERSION info into version.texi rather than using -D
  qapi2texi: replace quotation by bold section name

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-02-20 17:42:47 +00:00
Peter Maydell
6753e4ed15 input: add wctablet, ps2 fix
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 Version: GnuPG v2.0.22 (GNU/Linux)
 
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Merge remote-tracking branch 'remotes/kraxel/tags/pull-input-20170220-1' into staging

input: add wctablet, ps2 fix

# gpg: Signature made Mon 20 Feb 2017 11:42:12 GMT
# gpg:                using RSA key 0x4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>"
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>"
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>"
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/pull-input-20170220-1:
  Add wctablet device
  ps2: fix mouse mappings for right/middle button

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-02-20 13:38:34 +00:00
Peter Maydell
fea346f569 Makefile: Put VERSION info into version.texi rather than using -D
Unfortunately some older versions of makeinfo don't correctly
handle the -D command line option and fail to set the variable.
This then causes them to complain
 docs/qemu-ga-ref.texi:41: warning: undefined flag: VERSION

Work around this by doing as the autotools do, and writing
the information into a version.texi file which we then
include from the .texi files that need it.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <1487357968-31000-1-git-send-email-peter.maydell@linaro.org>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2017-02-20 14:11:07 +01:00
Anatoli Huseu1
378af96155 Add wctablet device
Add QEMU Wacom Penpartner serial tablet emulation.
GSoC 2016 project.

Signed-off-by: Anatoli Huseu1 <avg.tolik@gmail.com>

Various cleanups.
Add line speed tracking.
Implement ST and SP commands.
Adapted to chardev QOMification.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 1486391007-10116-1-git-send-email-kraxel@redhat.com
2017-02-20 11:26:28 +01:00
Haozhong Zhang
79c0f397fe docs: add document to explain the usage of vNVDIMM
Signed-off-by: Haozhong Zhang <haozhong.zhang@intel.com>
Reviewed-by: Xiao Guangrong <guangrong.xiao@linux.intel.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>
2017-02-17 21:52:30 +02:00
Daniel P. Berrange
d4fa8436ce trace: update docs to reflect new code generation approach
Describe use of per-subdir trace events files and how it impacts
code generation.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-id: 20170125161417.31949-8-berrange@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2017-01-31 17:11:18 +00:00
Pavel Dovgalyuk
9c2037d0a4 replay: save/load initial state
This patch implements initial vmstate creation or loading at the start
of record/replay. It is needed for rewinding the execution in the replay mode.

v4 changes:
 - snapshots are not created by default anymore

v3 changes:
 - added rrsnapshot option

Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
Message-Id: <20170124071746.4572.61449.stgit@PASHA-ISP>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2017-01-27 18:07:30 +01:00
Gerd Hoffmann
a4d79c3d10 docs: sync pci-ids.txt
Three commits allocated pci ids in include/hw/pci/pci.h
without also updating docs/specs/pci-ids.txt:

  bf439db pci: Allocate PCIe host bridge PCI ID
  40d14be hw/pci: introduce PCI Expander Bridge (PXB)
  02b0743 hw/pxb: introduce pxb-pcie expander for PCIe machines

This patch updates pci-ids.txt accordingly.

Cc: qemu-trivial@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-01-24 23:26:53 +03:00
Cao jin
9d7b2670a3 doc/usb2: fix typo
Signed-off-by: Cao jin <caoj.fnst@cn.fujitsu.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-01-24 23:26:53 +03:00
Frediano Ziglio
dfaba10b15 usb: Fix typo in documentation
simliar -> similar

Signed-off-by: Frediano Ziglio <fziglio@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-01-24 23:26:52 +03:00
Peter Maydell
db655a9653 -----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
 
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Merge remote-tracking branch 'remotes/jasowang/tags/net-pull-request' into staging

# gpg: Signature made Fri 20 Jan 2017 02:58:57 GMT
# gpg:                using RSA key 0xEF04965B398D6211
# gpg: Good signature from "Jason Wang (Jason Wang on RedHat) <jasowang@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: 215D 46F4 8246 689E C77F  3562 EF04 965B 398D 6211

* remotes/jasowang/tags/net-pull-request:
  tap: fix memory leak on failure in net_init_tap()
  hw/pci: use-after-free in pci_nic_init_nofail when nic device fails to initialize
  hw/net/dp8393x: Avoid unintentional sign extensions on addresses
  m68k: QOMify the MCF Fast Ethernet Controller device
  net: optimize checksum computation
  docs: Fix description of the sentence

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-01-20 14:56:40 +00:00
Zhang Chen
d4aa431f94 docs: Fix description of the sentence
Say it in another way to make it easier to understand.

Signed-off-by: Zhang Chen <zhangchen.fnst@cn.fujitsu.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2017-01-20 10:36:38 +08:00
Laszlo Ersek
a5b3ebfd23 fw-cfg: bump "x-file-slots" to 0x20 for 2.9+ machine types
More precisely, the "x-file-slots" count is bumped for all machine types
that:
(a) use fw_cfg, and
(b) are not versioned (hence migration is not expected to work for them
    across QEMU releases anyway), or have version 2.9.

This affects machine types implemented in the following source files:

- "hw/arm/virt.c". The "virt-*" machine type is versioned, and the <= 2.8
  versions already depend on HW_COMPAT_2_8 (see commit e353aac51b).
  Therefore adding the "x-file-slots" compat values to HW_COMPAT_2_8
  suffices.

- "hw/i386/pc.c". The "pc-i440fx-*" (including "pc-*") and "pc-q35-*"
  machine types are versioned. Modifying HW_COMPAT_2_8 is sufficient here
  too (see commit "pc: Add 2.9 machine-types"). The "isapc" machtype is
  not versioned. The "xenfv" machine type, which uses fw_cfg for direct
  kernel booting, is also not versioned.

- "hw/ppc/mac_newworld.c". The "mac99" machine type is not versioned.

- "hw/ppc/mac_oldworld.c". The "g3beige" machine type is not versioned.

- "hw/sparc/sun4m.c". None of the 9 machine types defined in this file
  appear versioned.

- "hw/sparc64/sun4u.c". None of the 3 machine types defined in this file
  appear versioned.

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Alexander Graf <agraf@suse.de>
Cc: Anthony Perard <anthony.perard@citrix.com>
Cc: Artyom Tarasenko <atar4qemu@gmail.com>
Cc: David Gibson <david@gibson.dropbear.id.au>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00
Laszlo Ersek
e12f3a13e2 fw-cfg: turn FW_CFG_FILE_SLOTS into a device property
We'd like to raise the value of FW_CFG_FILE_SLOTS. Doing it naively could
lead to problems with backward migration: a more recent QEMU (running an
older machine type) would allow the guest, in fw_cfg_select(), to select a
high key value that is unavailable in the same machine type implemented by
the older (target) QEMU. On the target host, fw_cfg_data_read() for
example could dereference nonexistent entries.

As first step, size the FWCfgState.entries[*] and FWCfgState.entry_order
arrays dynamically. All three array sizes will be influenced by the new
field FWCfgState.file_slots (and matching device property).

Make the following changes:

- Replace the FW_CFG_FILE_SLOTS macro with FW_CFG_FILE_SLOTS_MIN (minimum
  count of fw_cfg file slots) in the header file. The value remains 0x10.

- Replace all uses of FW_CFG_FILE_SLOTS with a helper function called
  fw_cfg_file_slots(), returning the new property.

- Eliminate the macro FW_CFG_MAX_ENTRY, and replace all its uses with a
  helper function called fw_cfg_max_entry().

- In the MMIO- and IO-mapped realize functions both, allocate all three
  arrays dynamically, based on the new property.

- The new property defaults to FW_CFG_FILE_SLOTS_MIN. This is going to be
  customized in the following patches.

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00
Michael S. Tsirkin
baf2d5bfba fw-cfg: support writeable blobs
Useful to send guest data back to QEMU.

Changes from Laszlo Ersek <lersek@redhat.com>:
- rebase the patch from Michael Tsirkin's original postings at [1] and [2]
  to the following patches:
  - loader: Allow a custom AddressSpace when loading ROMs
  - loader: Add AddressSpace loading support to uImages
  - loader: fix handling of custom address spaces when adding ROM blobs
- reject such writes immediately that would exceed the end of the array,
  rather than performing a partial write before setting the error bit: see
  the (len != dma.length) condition
- document the write interface

[1] http://lists.nongnu.org/archive/html/qemu-devel/2016-02/msg04968.html
[2] http://lists.nongnu.org/archive/html/qemu-devel/2016-03/msg02735.html

Cc: "Gabriel L. Somlo" <somlo@cmu.edu>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Michael Walle <michael@walle.cc>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Shannon Zhao <zhaoshenglong@huawei.com>
Cc: qemu-arm@nongnu.org
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Marcel Apfelbaum <marcel@redhat.com>
Acked-by: Gabriel Somlo <somlo@cmu.edu>
Tested-by: Gabriel Somlo <somlo@cmu.edu>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
2017-01-18 22:59:53 +02:00