ui: add getter for UIInfo

The following patch is going to introduce extra fields / details to
UIInfo. Add a getter and keep the current values, instead of memset(0)

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-4-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

edid: use physical dimensions if available

Replace dpi with width_mm/height_mm in qemu_edid_info.

Use it when set (non-zero) to compute the DPI and generate the EDID.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-3-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

edid: fix physical display size computation

Divide the resolution by the DPI, and multiply to mm.

Note the computation done for edid[21/22] is correct (in cm).

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-id: 20200927145751.365446-2-marcandre.lureau@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

virtio-gpu-3d: fix abnormal display after a warm reboot

When resetting virtio-gpu, virgl_renderer_reset() should be
called to ensure that the virglrenderer status is correct.

Signed-off-by: Guoqing Zhang <zhangguoqing.kernel@bytedance.com>
Reviewed-by: Qi Liu<liuqi.16@bytedance.com>
Message-id: 20200918111632.37354-1-zhangguoqing.kernel@bytedance.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

Merge remote-tracking branch 'remotes/alistair/tags/pull-register-20200927' into staging

Two small patches. One with a fix for the register API instance_size
and one for removing unused address variables from load_elf.

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* remotes/alistair/tags/pull-register-20200927:
  core/register: Specify instance_size in the TypeInfo
  load_elf: Remove unused address variables from callers

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-request' into staging

Trivial Patches Pull request 20200928

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* remotes/vivier2/tags/trivial-branch-for-5.2-pull-request:
  docs/system/deprecated: Move lm32 and unicore32 to the right section
  migration/multifd: Remove superfluous semicolons
  timer: Fix timer_mod_anticipate() documentation
  vhost-vdpa: remove useless variable
  Add *.pyc back to the .gitignore file
  virtio: vdpa: omit check return of g_malloc
  meson: fix static flag summary
  vhost-vdpa: fix indentation in vdpa_ops

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

core/register: Specify instance_size in the TypeInfo

Reported-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <4cf1beb7dafb9143c261d266557d3173bf160524.1598376594.git.alistair.francis@wdc.com>

load_elf: Remove unused address variables from callers

Several callers of load_elf() pass pointers for lowaddr and highaddr
parameters which are then not used for anything. This may stem from a
misunderstanding that load_elf need a value here but in fact it can
take NULL to ignore these values. Remove such unused variables and
pass NULL instead from callers that don't need these.

Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20200705174020.BDD0174633F@zero.eik.bme.hu>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20200925a' into staging

Migration and virtiofsd pull

Chuan Zheng's Dirtyrate and TLS changes, with small fixes from Dov and
Luarent.
Small virtiofs changes from Harry, Stefan, Vivek and Jiachen.
One HMP/monitor rework from me.

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* remotes/dgilbert/tags/pull-migration-20200925a: (26 commits)
  virtiofsd: Add -o allow_direct_io|no_allow_direct_io options
  virtiofsd: Used glib "shared" thread pool
  virtiofsd: document cache=auto default
  monitor: Use LOCK_GUARD macros
  migration/tls: add trace points for multifd-tls
  migration/tls: add support for multifd tls-handshake
  migration/tls: extract cleanup function for common-use
  migration/tls: add tls_hostname into MultiFDSendParams
  migration/tls: extract migration_tls_client_create for common-use
  migration/tls: save hostname into MigrationState
  migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)
  migration: Truncate state file in xen-save-devices-state
  migration/dirtyrate: Add trace_calls to make it easier to debug
  migration/dirtyrate: Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function
  migration/dirtyrate: Implement calculate_dirtyrate() function
  migration/dirtyrate: Implement set_sample_page_period() and is_sample_period_valid()
  migration/dirtyrate: skip sampling ramblock with size below MIN_RAMBLOCK_SIZE
  migration/dirtyrate: Compare page hash results for recorded sampled page
  migration/dirtyrate: Record hash results for each sampled page
  migration/dirtyrate: move RAMBLOCK_FOREACH_MIGRATABLE into ram.h
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

virtiofsd: Add -o allow_direct_io|no_allow_direct_io options

Due to the commit 65da4539803373ec4eec97ffc49ee90083e56efd, the O_DIRECT
open flag of guest applications will be discarded by virtiofsd. While
this behavior makes it consistent with the virtio-9p scheme when guest
applications use direct I/O, we no longer have any chance to bypass the
host page cache.

Therefore, we add a flag 'allow_direct_io' to lo_data. If '-o
 no_allow_direct_io' option is added, or none of '-o allow_direct_io' or
 '-o no_allow_direct_io' is added, the 'allow_direct_io' will be set to
 0, and virtiofsd discards O_DIRECT as before. If '-o allow_direct_io'
is added to the starting command-line, 'allow_direct_io' will be set to
1, so that the O_DIRECT flags will be retained and host page cache can
be bypassed.

Signed-off-by: Jiachen Zhang <zhangjiachen.jaycee@bytedance.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200824105957.61265-1-zhangjiachen.jaycee@bytedance.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

virtiofsd: Used glib "shared" thread pool

glib offers thread pools and it seems to support "exclusive" and "shared"
thread pools.

https://developer.gnome.org/glib/stable/glib-Thread-Pools.html#g-thread-pool-new

Currently we use "exlusive" thread pools but its performance seems to be
poor. I tried using "shared" thread pools and performance seems much
better. I posted performance results here.

https://www.redhat.com/archives/virtio-fs/2020-September/msg00080.html

So lets switch to shared thread pools. We can think of making it optional
once somebody can show in what cases exclusive thread pools offer better
results. For now, my simple performance tests across the board see
better results with shared thread pools.

Signed-off-by: Vivek Goyal <vgoyal@redhat.com>
Message-Id: <20200921213216.GE13362@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  With seccomp fix from Miklos

virtiofsd: document cache=auto default

The virtiofsd --help output documents the cache=auto default value but
the man page does not. Fix this.

Signed-off-by: Harry G. Coin <hgcoin@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200916112250.760245-1-stefanha@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

monitor: Use LOCK_GUARD macros

Use the lock guard macros in monitor/misc.c - saves
a lot of unlocks in error paths, and the occasional goto.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20200922095741.101911-1-dgilbert@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: add trace points for multifd-tls

add trace points for multifd-tls for debug.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <1600139042-104593-7-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: add support for multifd tls-handshake

Similar like migration main thread, we need to do handshake
for each multifd thread.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <1600139042-104593-6-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: extract cleanup function for common-use

multifd channel cleanup is need if multifd handshake failed,
let's extract it.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <1600139042-104593-5-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: add tls_hostname into MultiFDSendParams

Since multifd creation is async with migration_channel_connect, we should
pass the hostname from MigrationState to MultiFDSendParams.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Message-Id: <1600139042-104593-4-git-send-email-zhengchuan@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: extract migration_tls_client_create for common-use

migration_tls_client_create will be used in multifd-tls, let's
extract it.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <1600139042-104593-3-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/tls: save hostname into MigrationState

hostname is need in multifd-tls, save hostname into MigrationState.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: Yan Jin <jinyan12@huawei.com>
Message-Id: <1600139042-104593-2-git-send-email-zhengchuan@huawei.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration: increase max-bandwidth to 128 MiB/s (1 Gib/s)

max-bandwidth is set by default to 32 MiB/s (256 Mib/s)
since 2008 (5bb7910af031c).

Most of the CPUs can dirty memory faster than that now,
and this is clearly a problem with POWER where the page
size is 64 kiB and not 4 KiB.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20200921144957.979989-1-lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration: Truncate state file in xen-save-devices-state

When running the xen-save-devices-state QMP command, if the filename
already exists it will be truncated before dumping the devices' state
into it.

Signed-off-by: Dov Murik <dovmurik@linux.vnet.ibm.com>
Message-Id: <20200921094830.114028-1-dovmurik@linux.vnet.ibm.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Add trace_calls to make it easier to debug

Add trace_calls to make it easier to debug

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Message-Id: <1600237327-33618-13-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function

Implement qmp_cal_dirty_rate()/qmp_get_dirty_rate() function which could be called

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Message-Id: <1600237327-33618-12-git-send-email-zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  atomic function fixup
  Wording fixup in migration.json based on Eric's review

migration/dirtyrate: Implement calculate_dirtyrate() function

Implement calculate_dirtyrate() function.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-11-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Implement set_sample_page_period() and is_sample_period_valid()

Implement is_sample_period_valid() to check if the sample period is vaild and
do set_sample_page_period() to sleep specific time between sample actions.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-10-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: skip sampling ramblock with size below MIN_RAMBLOCK_SIZE

In order to sample real RAM, skip ramblock with size below MIN_RAMBLOCK_SIZE
which is set as 128M.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-9-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Compare page hash results for recorded sampled page

Compare page hash results for recorded sampled page.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-8-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Record hash results for each sampled page

Record hash results for each sampled page, crc32 is taken to calculate
hash results for each sampled length in TARGET_PAGE_SIZE.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-7-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: move RAMBLOCK_FOREACH_MIGRATABLE into ram.h

RAMBLOCK_FOREACH_MIGRATABLE is need in dirtyrate measure,
move the existing definition up into migration/ram.h

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-6-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Add dirtyrate statistics series functions

Add dirtyrate statistics functions to record/update dirtyrate info.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-5-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: Add RamblockDirtyInfo to store sampled page info

Add RamblockDirtyInfo to store sampled page info of each ramblock.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-4-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration/dirtyrate: add DirtyRateStatus to denote calculation status

add DirtyRateStatus to denote calculating status.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-3-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
  atomic name fixup

migration/dirtyrate: setup up query-dirtyrate framwork

Add get_dirtyrate_thread() functions to setup query-dirtyrate
framework.

Signed-off-by: Chuan Zheng <zhengchuan@huawei.com>
Signed-off-by: YanYing Zhuang <ann.zhuangyanying@huawei.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: David Edmondson <david.edmondson@oracle.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <1600237327-33618-2-git-send-email-zhengchuan@huawei.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration: Rework migrate_send_rp_req_pages() function

We duplicated the logic of maintaining the last_rb variable at both callers of
this function.  Pass *rb pointer into the function so that we can avoid
duplicating the logic.  Also, when we have the rb pointer, it's also easier to
remove the original 2nd & 4th parameters, because both of them (name of the
ramblock when needed, or the page size) can be fetched from the ramblock
pointer too.

Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20200908203022.341615-3-peterx@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

migration: Properly destroy variables on incoming side

In migration_incoming_state_destroy(), we've got a few variables that aren't
destroyed properly, namely:

    main_thread_load_event
    postcopy_pause_sem_dst
    postcopy_pause_sem_fault
    rp_mutex

Destroy them properly.

Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20200908203022.341615-2-peterx@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>

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

Pull request

This includes the atomic_ -> qatomic_ rename that touches many files and is
prone to conflicts.

# gpg: Signature made Wed 23 Sep 2020 17:08:43 BST
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg:                 aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* remotes/stefanha/tags/block-pull-request:
  qemu/atomic.h: rename atomic_ to qatomic_
  tests: add test-fdmon-epoll
  fdmon-poll: reset npfd when upgrading to fdmon-epoll
  gitmodules: add qemu.org vbootrom submodule
  gitmodules: switch to qemu.org meson mirror
  gitmodules: switch to qemu.org qboot mirror
  docs/system: clarify deprecation schedule
  virtio-crypto: don't modify elem->in/out_sg
  virtio-blk: undo destructive iov_discard_*() operations
  util/iov: add iov_discard_undo()
  virtio: add vhost-user-fs-ccw device
  libvhost-user: handle endianness as mandated by the spec
  MAINTAINERS: add Stefan Hajnoczi as block/nvme.c maintainer

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/kraxel/tags/audio-20200923-pull-request' into staging

audio: various buffering fixes.
audio: build spiceaudio as module.

# gpg: Signature made Wed 23 Sep 2020 10:09:46 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/audio-20200923-pull-request:
  audio: build spiceaudio as module
  audio: remove qemu_spice_audio_init()
  audio: run downstream playback queue unconditionally
  audio: align audio_generic_write with audio_pcm_hw_run_out
  audio: remove unnecessary calls to put_buffer_in
  audio: align audio_generic_read with audio_pcm_hw_run_in
  audio/spiceaudio: always rate limit playback stream
  audio/audio: fix video playback slowdown with spiceaudio
  audio: handle buf == NULL in put_buffer_out()

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

machine + QOM queue, 2020-09-22

QOM cleanups:
* Convert instance properties to class properties
  (Eduardo Habkost)
* simplify object_find_property / object_class_find_property
  (Daniel P. Berrangé)

Deprecated feature removal:
* Drop support for invalid topologies (Igor Mammedov)

# gpg: Signature made Tue 22 Sep 2020 23:25:01 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
# Primary key fingerprint: 5A32 2FD5 ABC4 D3DB ACCF  D1AA 2807 936F 984D C5A6

* remotes/ehabkost/tags/machine-next-pull-request:
  sifive_u: Register "start-in-flash" as class property
  sifive_e: Register "revb" as class property
  i440fx: Register i440FX-pcihost properties as class properties
  machine: Register "memory-backend" as class property
  xlnx-zcu102: Register properties as class properties
  cpu/core: Register core-id and nr-threads as class properties
  s390x: Register all CPU properties as class properties
  cryptodev-backend: Register "chardev" as class property
  cryptodev-vhost-user: Register "chardev" as class property
  smp: drop support for deprecated (invalid topologies)
  qom: simplify object_find_property / object_class_find_property

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

docs/system/deprecated: Move lm32 and unicore32 to the right section

lm32 and unicore32 are softmmut targets, and not linux-user targets.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200923080015.77373-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

migration/multifd: Remove superfluous semicolons

checkpatch.pl report superfluous semicolons since commit
ee0f3c09e01, but this one was missed:

  scripts/checkpatch.pl d32ca5ad798~..d32ca5ad798
  ERROR: superfluous trailing semicolon
  #498: FILE: migration/multifd.c:308:
  +    ram_counters.transferred += transferred;;
  total: 1 errors, 1 warnings, 2073 lines checked

Fixes: d32ca5ad798 ("multifd: Split multifd code into its own file")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200921040231.437653-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

timer: Fix timer_mod_anticipate() documentation

timer_mod_anticipate() will be scaled to the timer unit,
which is not always nanosecond. Fix the documentation.

Fixes: add40e9777d ("timer: add timer_mod_anticipate*")
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200920155042.400737-1-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

vhost-vdpa: remove useless variable

in vhost_vdpa_listener_region_del(), try_unmap is always true and so,
vhost_vdpa_dma_unmap() is always called. We can remove the variable

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200920152024.860172-1-lvivier@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

Add *.pyc back to the .gitignore file

Python still dumps its bytecode into the source directory, so
we should continue to ignore the *.pyc files.

Fixes: 0e72b7df4d ("Simplify the .gitignore file")
Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200919101859.28739-1-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

virtio: vdpa: omit check return of g_malloc

If g_malloc fails, the application will be terminated.
No need to check the return value of g_malloc.

Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20200819144309.67579-1-liq3ea@163.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

meson: fix static flag summary

'static build:' must display value of CONFIG_STATIC rather than value of
CONFIG_TOOLS.

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200917140700.673171-1-lvivier@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

vhost-vdpa: fix indentation in vdpa_ops

This patch fixes wrong indentation of some vdpa_ops fields introduced
with the initial commit 108a64818e ("vhost-vdpa: introduce vhost-vdpa
backend")

Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20200916152634.56917-1-sgarzare@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

qemu/atomic.h: rename atomic_ to qatomic_

clang's C11 atomic_fetch_*() functions only take a C11 atomic type
pointer argument. QEMU uses direct types (int, etc) and this causes a
compiler error when a QEMU code calls these functions in a source file
that also included <stdatomic.h> via a system header file:

  $ CC=clang CXX=clang++ ./configure ... && make
  ../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid)

Avoid using atomic_*() names in QEMU's atomic.h since that namespace is
used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h
and <stdatomic.h> can co-exist. I checked /usr/include on my machine and
searched GitHub for existing "qatomic_" users but there seem to be none.

This patch was generated using:

  $ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \
    sort -u >/tmp/changed_identifiers
  $ for identifier in $(</tmp/changed_identifiers); do
        sed -i "s%\<$identifier\>%q$identifier%g" \
            $(git grep -I -l "\<$identifier\>")
    done

I manually fixed line-wrap issues and misaligned rST tables.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200923105646.47864-1-stefanha@redhat.com>

Merge remote-tracking branch 'remotes/ericb/tags/pull-bitmaps-2020-09-21' into staging

bitmaps patches for 2020-09-21

- Eric Blake: Improve 'qemu-img bitmap --merge' by not opening backing images

# gpg: Signature made Tue 22 Sep 2020 01:58:31 BST
# gpg:                using RSA key 71C2CC22B1C4602927D2F3AAA7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>" [full]
# gpg:                 aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>" [full]
# gpg:                 aka "[jpeg image of size 6874]" [full]
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2  F3AA A7A1 6B4A 2527 436A

* remotes/ericb/tags/pull-bitmaps-2020-09-21:
  qemu-img: Support bitmap --merge into backing image

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

tests: add test-fdmon-epoll

Test aio_disable_external(), which switches from fdmon-epoll back to
fdmon-poll. This resulted in an assertion failure that was fixed in the
previous patch.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200915120339.702938-3-stefanha@redhat.com>

fdmon-poll: reset npfd when upgrading to fdmon-epoll

npfd keeps track of how many pollfds are currently being monitored. It
must be reset to 0 when fdmon_poll_wait() returns.

When npfd reaches a treshold we switch to fdmon-epoll because it scales
better.

This patch resets npfd in the case where we switch to fdmon-epoll.
Forgetting to do so results in the following assertion failure:

  util/fdmon-poll.c:65: fdmon_poll_wait: Assertion `npfd == 0' failed.

Fixes: 1f050a4690f62a1e7dabc4f44141e9f762c3769f ("aio-posix: extract ppoll(2) and epoll(7) fd monitoring")
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Buglink: https://bugzilla.redhat.com/show_bug.cgi?id=1869952
Message-Id: <20200915120339.702938-2-stefanha@redhat.com>

gitmodules: add qemu.org vbootrom submodule

The vbootrom module is needed for the new NPCM7xx ARM SoCs. The
vbootrom.git repo is now mirrored on qemu.org. QEMU mirrors third-party
code to ensure that users can always build QEMU even if the dependency
goes offline and so QEMU meets its responsibilities to provide full
source code under software licenses.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Cc: Havard Skinnemoen <hskinnemoen@google.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20200915130834.706758-4-stefanha@redhat.com>

gitmodules: switch to qemu.org meson mirror

QEMU now hosts a mirror of meson.git. QEMU mirrors third-party code to
ensure that users can always build QEMU even if the dependency goes
offline and so QEMU meets its responsibilities to provide full source
code under software licenses.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200915130834.706758-3-stefanha@redhat.com>

gitmodules: switch to qemu.org qboot mirror

QEMU now hosts a mirror of qboot.git. QEMU mirrors third-party code to
ensure that users can always build QEMU even if the dependency goes
offline and so QEMU meets its responsibilities to provide full source
code under software licenses.

Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200915130834.706758-2-stefanha@redhat.com>

docs/system: clarify deprecation schedule

The sentence explaining the deprecation schedule is ambiguous. Make it
clear that a feature deprecated in the Nth release is guaranteed to
remain available in the N+1th release. Removal can occur in the N+2nd
release or later.

As an example of this in action, see commit
25956af3fe5dd0385ad8017bc768a6afe41e2a74 ("block: Finish deprecation of
'qemu-img convert -n -o'"). The feature was deprecated in QEMU 4.2.0. It
was present in the 5.0.0 release and removed in the 5.1.0 release.

Suggested-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20200915150734.711426-1-stefanha@redhat.com>

virtio-crypto: don't modify elem->in/out_sg

A number of iov_discard_front/back() operations are made by
virtio-crypto. The elem->in/out_sg iovec arrays are modified by these
operations, resulting virtqueue_unmap_sg() calls on different addresses
than were originally mapped.

This is problematic because dirty memory may not be logged correctly,
MemoryRegion refcounts may be leaked, and the non-RAM bounce buffer can
be leaked.

Take a copy of the elem->in/out_sg arrays so that the originals are
preserved. The iov_discard_undo() API could be used instead (with better
performance) but requires careful auditing of the code, so do the simple
thing instead.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200917094455.822379-4-stefanha@redhat.com>

virtio-blk: undo destructive iov_discard_*() operations

Fuzzing discovered that virtqueue_unmap_sg() is being called on modified
req->in/out_sg iovecs. This means dma_memory_map() and
dma_memory_unmap() calls do not have matching memory addresses.

Fuzzing discovered that non-RAM addresses trigger a bug:

  void address_space_unmap(AddressSpace *as, void *buffer, hwaddr len,
                           bool is_write, hwaddr access_len)
  {
      if (buffer != bounce.buffer) {
          ^^^^^^^^^^^^^^^^^^^^^^^

A modified iov->iov_base is no longer recognized as a bounce buffer and
the wrong branch is taken.

There are more potential bugs: dirty memory is not tracked correctly and
MemoryRegion refcounts can be leaked.

Use the new iov_discard_undo() API to restore elem->in/out_sg before
virtqueue_push() is called.

Fixes: 827805a2492c1bbf1c0712ed18ee069b4ebf3dd6 ("virtio-blk: Convert VirtIOBlockReq.out to structrue")
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1890360
Message-Id: <20200917094455.822379-3-stefanha@redhat.com>

util/iov: add iov_discard_undo()

The iov_discard_front/back() operations are useful for parsing iovecs
but they modify the array elements. If the original array is needed
after parsing finishes there is currently no way to restore it.

Although g_memdup() can be used before performing destructive
iov_discard_front/back() operations, this is inefficient.

Introduce iov_discard_undo() to restore the array to the state prior to
an iov_discard_front/back() operation.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-Id: <20200917094455.822379-2-stefanha@redhat.com>

virtio: add vhost-user-fs-ccw device

Wire up the CCW device for vhost-user-fs.

Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
Message-id: 20200901150019.29229-2-mhartmay@linux.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

libvhost-user: handle endianness as mandated by the spec

Since virtio existed even before it got standardized, the virtio
standard defines the following types of virtio devices:

 + legacy device (pre-virtio 1.0)
 + non-legacy or VIRTIO 1.0 device
 + transitional device (which can act both as legacy and non-legacy)

Virtio 1.0 defines the fields of the virtqueues as little endian,
while legacy uses guest's native endian [1]. Currently libvhost-user
does not handle virtio endianness at all, i.e. it works only if the
native endianness matches with whatever is actually needed. That means
things break spectacularly on big-endian targets. Let us handle virtio
endianness for non-legacy as required by the virtio specification [1]
and fence legacy virtio, as there is no safe way to figure out the
needed endianness conversions for all cases. The fencing of legacy
virtio devices is done in `vu_set_features_exec`.

[1] https://docs.oasis-open.org/virtio/virtio/v1.1/cs01/virtio-v1.1-cs01.html#x1-210003

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Marc Hartmayer <mhartmay@linux.ibm.com>
Message-id: 20200901150019.29229-3-mhartmay@linux.ibm.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

MAINTAINERS: add Stefan Hajnoczi as block/nvme.c maintainer

Development of the userspace NVMe block driver picked up again recently.
After talking with Fam I am stepping up as block/nvme.c maintainer.
Patches will be merged through my 'block' tree.

Cc: Kevin Wolf <kwolf@redhat.com>
Cc: Klaus Jensen <k.jensen@samsung.com>
Cc: Fam Zheng <fam@euphon.net>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Acked-by: Klaus Jensen <k.jensen@samsung.com>
Acked-by: Fam Zheng <fam@euphon.net>
Message-id: 20200907111632.90499-1-stefanha@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

audio: build spiceaudio as module

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200916084117.21828-3-kraxel@redhat.com

audio: remove qemu_spice_audio_init()

Handle the spice special case in audio_init instead.

With the qemu_spice_audio_init() symbol dependency being
gone we can build spiceaudio as module.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-id: 20200916084117.21828-2-kraxel@redhat.com

audio: run downstream playback queue unconditionally

Run the downstream playback queue even if there are no samples
in the mixing engine buffer. The downstream queue may still have
queued samples.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-7-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio: align audio_generic_write with audio_pcm_hw_run_out

The function audio_generic_write should work exactly like
audio_pcm_hw_run_out. It's a very similar function working on a
different buffer.

This patch significantly reduces the number of drop-outs with
the DirectSound backend. To hear the difference start qemu with
-audiodev dsound,id=audio0,out.mixing-engine=off and play a
song in the guest with and without this patch.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-6-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio: remove unnecessary calls to put_buffer_in

This patch removes unnecessary calls to the pcm_ops function
put_buffer_in(). No audio backend needs this call if the
returned length of pcm_ops function get_buffer_in() is zero.

For the DirectSound backend this prevents a call to
dsound_unlock_in() without a preceding call to dsound_lock_in().
While Windows doesn't complain it seems wrong anyway.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-5-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio: align audio_generic_read with audio_pcm_hw_run_in

The function audio_generic_read should work exactly like
audio_pcm_hw_run_in. It's a very similar function working
on a different buffer.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-4-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio/spiceaudio: always rate limit playback stream

The playback rate with the spiceaudio backend is currently too
fast if there's no spice client connected or the spice client
can't play audio. Rate limit the audio playback stream in all
cases. To calculate the rate correctly the limiter has to know
the maximum buffer size.

Fixes: 8c198ff065 ("spiceaudio: port to the new audio backend api")
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-3-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio/audio: fix video playback slowdown with spiceaudio

This patch allows the audio backends get_buffer_out() functions
to drop audio data and mitigates a bug reported on the qemu-devel
mailing list.

https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg03832.html

The new rules for the variables buf and size returned by
get_buffer_out() are:
size == 0: Downstream playback buffer is full. Retry later.
size > 0, buf != NULL: Copy size bytes to buf for playback.
size > 0, buf == NULL: Drop size bytes.

The audio playback rate with spiceaudio for the no audio case is
too fast, but that's what we had before commit fb35c2cec5
"audio/dsound: fix invalid parameters error". The complete fix
comes with the next patch.

Reported-by: Qi Zhou <atmgnd@outlook.com>
Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-2-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

audio: handle buf == NULL in put_buffer_out()

With the next patch all audio backends put_buffer_out() functions
have to handle the buf == NULL case, provided the get_buffer_out()
function may return buf = NULL and size > 0.

It turns out that all audio backends get_buffer_out() functions
either can't return buf = NULL or return buf = NULL and size = 0
at the same time. The only exception is the spiceaudio backend
where size may be uninitialized.

Signed-off-by: Volker Rümelin <vr_qemu@t-online.de>
Message-id: 20200920171729.15861-1-vr_qemu@t-online.de
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

sifive_u: Register "start-in-flash" as class property

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200921221045.699690-25-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

sifive_e: Register "revb" as class property

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200921221045.699690-24-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

i440fx: Register i440FX-pcihost properties as class properties

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200921221045.699690-23-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

machine: Register "memory-backend" as class property

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200921221045.699690-21-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

xlnx-zcu102: Register properties as class properties

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-Id: <20200921221045.699690-20-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

cpu/core: Register core-id and nr-threads as class properties

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200921221045.699690-18-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

s390x: Register all CPU properties as class properties

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Message-Id: <20200921221045.699690-13-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

cryptodev-backend: Register "chardev" as class property

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <20200921221045.699690-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

cryptodev-vhost-user: Register "chardev" as class property

Class properties make QOM introspection simpler and easier, as
they don't require an object to be instantiated.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <20200921221045.699690-2-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

smp: drop support for deprecated (invalid topologies)

it's was deprecated since 3.1

Support for invalid topologies is removed, the user must ensure
that topologies described with -smp include all possible cpus,
i.e. (sockets * cores * threads) == maxcpus or QEMU will
exit with error.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20200911133202.938754-1-imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

qom: simplify object_find_property / object_class_find_property

When debugging QEMU it is often useful to put a breakpoint on the
error_setg_internal method impl.

Unfortunately the object_property_add / object_class_property_add
methods call object_property_find / object_class_property_find methods
to check if a property exists already before adding the new property.

As a result there are a huge number of calls to error_setg_internal
on startup of most QEMU commands, making it very painful to set a
breakpoint on this method.

Most callers of object_find_property and object_class_find_property,
however, pass in a NULL for the Error parameter. This simplifies the
methods to remove the Error parameter entirely, and then adds some
new wrapper methods that are able to raise an Error when needed.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200914135617.1493072-1-berrange@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Merge remote-tracking branch 'remotes/kraxel/tags/input-20200921-pull-request' into staging

input: tsc2xxx fix.

# gpg: Signature made Mon 21 Sep 2020 12:09:17 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/input-20200921-pull-request:
  hw/input/tsc2xxx: Reduce MouseTransformInfo structure exposure

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/kraxel/tags/usb-20200921-pull-request' into staging

usb: fix u2f build
usb: fix ohci oob access and loop issues

# gpg: Signature made Mon 21 Sep 2020 09:58:06 BST
# gpg:                using RSA key 4CB6D8EED3E87138
# gpg: Good signature from "Gerd Hoffmann (work) <kraxel@redhat.com>" [full]
# gpg:                 aka "Gerd Hoffmann <gerd@kraxel.org>" [full]
# gpg:                 aka "Gerd Hoffmann (private) <kraxel@gmail.com>" [full]
# Primary key fingerprint: A032 8CFF B93A 17A7 9901  FE7D 4CB6 D8EE D3E8 7138

* remotes/kraxel/tags/usb-20200921-pull-request:
  hw: usb: hcd-ohci: check for processed TD before retire
  hw: usb: hcd-ohci: check len and frame_number variables
  usb: fix u2f build

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/vivier2/tags/trivial-branch-for-5.2-pull-request' into staging

Pull request trivial patches 20200919

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# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/trivial-branch-for-5.2-pull-request:
  contrib/: fix some comment spelling errors
  qapi/: fix some comment spelling errors
  disas/: fix some comment spelling errors
  linux-user/: fix some comment spelling errors
  util/: fix some comment spelling errors
  scripts/: fix some comment spelling errors
  docs/: fix some comment spelling errors
  migration/: fix some comment spelling errors
  qemu/: fix some comment spelling errors
  scripts/git.orderfile: Display meson files along with buildsys ones
  hw/timer/hpet: Fix debug format strings
  hw/timer/hpet: Remove unused functions hpet_ram_readb, hpet_ram_readw
  meson: remove empty else and duplicated gio deps
  manual: escape backslashes in "parsed-literal" blocks
  ui/spice-input: Remove superfluous forward declaration
  hw/ppc/ppc4xx_pci: Replace magic value by the PCI_NUM_PINS definition
  hw/gpio/max7310: Remove impossible check

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

qemu-img: Support bitmap --merge into backing image

If you have the chain 'base.qcow2 <- top.qcow2' and want to merge a
bitmap from top into base, qemu-img was failing with:

qemu-img: Could not open 'top.qcow2': Could not open backing file: Failed to get shared "write" lock
Is another process using the image [base.qcow2]?

The easiest fix is to not open the entire backing chain of either
image (source or destination); after all, the point of 'qemu-img
bitmap' is solely to manipulate bitmaps directly within a single qcow2
image, and this is made more precise if we don't pay attention to
other images in the chain that may happen to have a bitmap by the same
name.

However, note that on a case-by-case analysis, there _are_ times where
we treat it as a feature that we can access a bitmap from a backing
layer in association with an overlay BDS.  A demonstration of this is
using NBD to expose both an overlay BDS (for constant contents) and a
bitmap (for learning which blocks are interesting) during an
incremental backup:

Base <- Active <- Temporary
          \--block job ->/

where Temporary is being fed by a backup 'sync=none' job.  When
exposing Temporary over NBD, referring to a bitmap that lives only in
Active is less effort than having to copy a bitmap into Temporary [1].
So the testsuite additions in this patch check both where bitmaps get
allocated (the qemu-img info output), and that qemu-nbd is indeed able
to access a bitmap inherited from the backing chain since it is a
different use case than 'qemu-img bitmap'.

[1] Full disclosure: prior to the recent commit 374eedd1c4 and
friends, we were NOT able to see bitmaps through filters, which meant
that we actually did not have nice clean semantics for uniformly being
able to pick up bitmaps from anywhere in the backing chain (seen as a
change in behavior between qemu 4.1 and 4.2 at commit 00e30f05de, when
block-copy swapped from a one-off to a filter).  Which means libvirt
was already coded to copy bitmaps around for the sake of older qemu,
even though modern qemu no longer needs it.  Oh well.

Fixes: http://bugzilla.redhat.com/1877209
Reported-by: Eyal Shenitzky <eshenitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200914191009.644842-1-eblake@redhat.com>
[eblake: more commit message tweaks, per Max Reitz review]
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>

Merge remote-tracking branch 'remotes/ehabkost/tags/machine-next-pull-request' into staging

QOM queue, 2020-09-18

Fixes:
* Error value corrections (Markus Armbruster)
* Correct object_class_dynamic_cast_assert() documentation (Eduardo Habkost)
* Ensure objects using QEMU_ALIGNED are properly aligned (Richard Henderson)

QOM cleanups (Eduardo Habkost):
* Rename some constants
* Simplify parameters of OBJECT_DECLARE* macros
* Additional DECLARE_*CHECKER* usage
* Additional OBJECT_DECLARE_TYPE usage
* Additional OBJECT_DECLARE_SIMPLE_TYPE usage

# gpg: Signature made Fri 18 Sep 2020 21:45:29 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
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* remotes/ehabkost/tags/machine-next-pull-request:
  Use OBJECT_DECLARE_SIMPLE_TYPE when possible
  Use OBJECT_DECLARE_TYPE when possible
  qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros
  qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE
  scripts/codeconverter: Update to latest version
  target/s390x: Set instance_align on S390CPU TypeInfo
  target/riscv: Set instance_align on RISCVCPU TypeInfo
  target/ppc: Set instance_align on PowerPCCPU TypeInfo
  target/arm: Set instance_align on CPUARM TypeInfo
  qom: Allow objects to be allocated with increased alignment
  qom: Correct error values in two contracts
  qom: Clean up object_property_get_enum()'s error value
  qom: Correct object_class_dynamic_cast_assert() documentation
  sifive: Use DECLARE_*CHECKER* macros
  sifive: Move QOM typedefs and add missing includes
  sifive_u: Rename memmap enum constants
  sifive_e: Rename memmap enum constants

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/ehabkost/tags/x86-next-pull-request' into staging

x86 queue, 2020-09-18

Cleanups:
* Correct the meaning of '0xffffffff' value for hv-spinlocks (Vitaly Kuznetsov)
* vmport: Drop superfluous parenthesis (Philippe Mathieu-Daudé)

Fixes:
* Use generic APIC ID encoding code for EPYC (Babu Moger)

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# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
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* remotes/ehabkost/tags/x86-next-pull-request:
  i386: Simplify CPUID_8000_001E for AMD
  i386: Simplify CPUID_8000_001d for AMD
  hw/i386/vmport: Drop superfluous parenthesis around function typedef
  i386/kvm: correct the meaning of '0xffffffff' value for hv-spinlocks

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/philmd-gitlab/tags/acceptance-next-20200918' into staging

Acceptance tests queue

Get GitLab CI acceptance jobs green again.

CI jobs results:
  https://gitlab.com/philmd/qemu/-/pipelines/191795388

# gpg: Signature made Fri 18 Sep 2020 20:17:54 BST
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# gpg: Good signature from "Philippe Mathieu-Daudé (F4BUG) <f4bug@amsat.org>" [full]
# Primary key fingerprint: FAAB E75E 1291 7221 DCFD  6BB2 E3E3 2C2C DEAD C0DE

* remotes/philmd-gitlab/tags/acceptance-next-20200918:
  tests/acceptance: Skip slow quanta-gsj U-boot+Linux test
  tests/acceptance: Disable tests dependent of unreliable apt.armbian.com

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

Merge remote-tracking branch 'remotes/ehabkost/tags/python-next-pull-request' into staging

Python queue, 2020-09-18

Alexey Kirillov (1):
      analyze-migration.py: fix read_migration_debug_json() return type

Andrey Shinkevich (1):
      scripts/simplebench: compare write request performance

# gpg: Signature made Fri 18 Sep 2020 19:02:00 BST
# gpg:                using RSA key 5A322FD5ABC4D3DBACCFD1AA2807936F984DC5A6
# gpg:                issuer "ehabkost@redhat.com"
# gpg: Good signature from "Eduardo Habkost <ehabkost@redhat.com>" [full]
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* remotes/ehabkost/tags/python-next-pull-request:
  analyze-migration.py: fix read_migration_debug_json() return type
  scripts/simplebench: compare write request performance

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/input/tsc2xxx: Reduce MouseTransformInfo structure exposure

Commit a5d7eb6534a ("Add TSC2301 touchscreen & keypad controller")
added the MouseTransformInfo declaration in "ui/console.h",
however it is only used in "hw/input/tsc2xxx.h".
Reduce the structure exposure by moving it to the single include
where it is used.

This should fix a build failure on OpenBSD:

  In file included from hw/arm/nseries.c:30:
  In file included from include/hw/arm/omap.h:24:
  In file included from include/hw/input/tsc2xxx.h:14:
  include/ui/console.h:11:11: fatal error: 'epoxy/gl.h' file not found
  # include <epoxy/gl.h>
            ^~~~~~~~~~~~
  1 error generated.
  gmake: *** [Makefile.ninja:1735:
  libqemu-aarch64-softmmu.fa.p/hw_arm_nseries.c.o] Error 1

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-id: 20200907010155.815131-1-f4bug@amsat.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw: usb: hcd-ohci: check for processed TD before retire

While servicing OHCI transfer descriptors(TD), ohci_service_iso_td
retires a TD if it has passed its time frame. It does not check if
the TD was already processed once and holds an error code in TD_CC.
It may happen if the TD list has a loop. Add check to avoid an
infinite loop condition.

Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Reviewed-by: Li Qiang <liq3ea@gmail.com>
Message-id: 20200915182259.68522-3-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

hw: usb: hcd-ohci: check len and frame_number variables

While servicing the OHCI transfer descriptors(TD), OHCI host
controller derives variables 'start_addr', 'end_addr', 'len'
etc. from values supplied by the host controller driver.
Host controller driver may supply values such that using
above variables leads to out-of-bounds access issues.
Add checks to avoid them.

AddressSanitizer: stack-buffer-overflow on address 0x7ffd53af76a0
  READ of size 2 at 0x7ffd53af76a0 thread T0
  #0 ohci_service_iso_td ../hw/usb/hcd-ohci.c:734
  #1 ohci_service_ed_list ../hw/usb/hcd-ohci.c:1180
  #2 ohci_process_lists ../hw/usb/hcd-ohci.c:1214
  #3 ohci_frame_boundary ../hw/usb/hcd-ohci.c:1257
  #4 timerlist_run_timers ../util/qemu-timer.c:572
  #5 qemu_clock_run_timers ../util/qemu-timer.c:586
  #6 qemu_clock_run_all_timers ../util/qemu-timer.c:672
  #7 main_loop_wait ../util/main-loop.c:527
  #8 qemu_main_loop ../softmmu/vl.c:1676
  #9 main ../softmmu/main.c:50

Reported-by: Gaoning Pan <pgn@zju.edu.cn>
Reported-by: Yongkang Jia <j_kangel@163.com>
Reported-by: Yi Ren <yunye.ry@alibaba-inc.com>
Signed-off-by: Prasad J Pandit <pjp@fedoraproject.org>
Message-id: 20200915182259.68522-2-ppandit@redhat.com
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

usb: fix u2f build

Just use qemu_open_old() for a quick fix, switch
to better error handling left for another day.

Fixes: 448058aa99aa ("util: rename qemu_open() to qemu_open_old()")
Cc: César Belley <cesar.belley@lse.epita.fr>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20200918110122.9121-1-kraxel@redhat.com

Use OBJECT_DECLARE_SIMPLE_TYPE when possible

This converts existing DECLARE_INSTANCE_CHECKER usage to
OBJECT_DECLARE_SIMPLE_TYPE when possible.

$ ./scripts/codeconverter/converter.py -i \
  --pattern=AddObjectDeclareSimpleType $(git grep -l '' -- '*.[ch]')

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20200916182519.415636-6-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

Use OBJECT_DECLARE_TYPE when possible

This converts existing DECLARE_OBJ_CHECKERS usage to
OBJECT_DECLARE_TYPE when possible.

 $ ./scripts/codeconverter/converter.py -i \
   --pattern=AddObjectDeclareType $(git grep -l '' -- '*.[ch]')

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Paul Durrant <paul@xen.org>
Message-Id: <20200916182519.415636-5-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

qom: Remove module_obj_name parameter from OBJECT_DECLARE* macros

One of the goals of having less boilerplate on QOM declarations
is to avoid human error.  Requiring an extra argument that is
never used is an opportunity for mistakes.

Remove the unused argument from OBJECT_DECLARE_TYPE and
OBJECT_DECLARE_SIMPLE_TYPE.

Coccinelle patch used to convert all users of the macros:

  @@
  declarer name OBJECT_DECLARE_TYPE;
  identifier InstanceType, ClassType, lowercase, UPPERCASE;
  @@
   OBJECT_DECLARE_TYPE(InstanceType, ClassType,
  -                    lowercase,
                       UPPERCASE);

  @@
  declarer name OBJECT_DECLARE_SIMPLE_TYPE;
  identifier InstanceType, lowercase, UPPERCASE;
  @@
   OBJECT_DECLARE_SIMPLE_TYPE(InstanceType,
  -                    lowercase,
                       UPPERCASE);

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Paul Durrant <paul@xen.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20200916182519.415636-4-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

qom: Remove ParentClassType argument from OBJECT_DECLARE_SIMPLE_TYPE

The requirement to specify the parent class type makes the macro
harder to use and easy to misuse (silent bugs can be introduced
if the wrong struct type is specified).

Simplify the macro by just not declaring any class struct,
allowing us to remove the class_size field from the TypeInfo
variables for those types.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200916182519.415636-3-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

scripts/codeconverter: Update to latest version

I'm not documenting every single change in the codeconverter
script because most of that code will be deleted once we finish
the QOM code conversion.  This patch updates the script to the
latest version that was used to perform changes in the QOM code.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20200916182519.415636-2-ehabkost@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

analyze-migration.py: fix read_migration_debug_json() return type

Since we use result of read_migration_debug_json() as JSON formatted string,
we must provide proper type. Before Python 3.6 json.loads() method
support only str typed input.

Signed-off-by: Alexey Kirillov <lekiravi@yandex-team.ru>
Message-Id: <20200715152135.20287-1-lekiravi@yandex-team.ru>
[ehabkost: added comment explaining why decode() is needed}
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

scripts/simplebench: compare write request performance

The script 'bench_write_req.py' allows comparing performances of write
request for two qemu-img binary files.
An example with (qemu-img binary 1) and without (qemu-img binary 2) the
applied patch "qcow2: skip writing zero buffers to empty COW areas"
(git commit ID: c8bb23cbdbe32f5) has the following results:

SSD:
----------------  -------------------  -------------------
                  <qemu-img binary 1>  <qemu-img binary 2>
<cluster front>   0.10 +- 0.00         8.16 +- 0.65
<cluster middle>  0.10 +- 0.00         7.37 +- 1.10
<cross cluster>   7.40 +- 1.08         21.97 +- 4.19
<cluster 64K>     2.14 +- 0.94         8.48 +- 1.66
----------------  -------------------  -------------------
HDD:
----------------  -------------------  -------------------
                  <qemu-img binary 1>  <qemu-img binary 2>
<cluster front>   2.30 +- 0.01         6.19 +- 0.06
<cluster middle>  2.20 +- 0.09         6.20 +- 0.06
<cross cluster>   8.32 +- 0.16         8.26 +- 0.14
<cluster 64K>     8.20 +- 0.05         6.26 +- 0.10
----------------  -------------------  -------------------

Suggested-by: Denis V. Lunev <den@openvz.org>
Suggested-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Signed-off-by: Andrey Shinkevich <andrey.shinkevich@virtuozzo.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <1594741846-475697-1-git-send-email-andrey.shinkevich@virtuozzo.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>

target/s390x: Set instance_align on S390CPU TypeInfo

Fix alignment of CPUS390XState.vregs.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20200916004638.2444147-7-richard.henderson@linaro.org>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>