migration: MigrationEvent for notifiers

Passing MigrationState to notifiers is unsound because they could access
unstable migration state internals or even modify the state. Instead, pass
the minim

migration: MigrationEvent for notifiers

Passing MigrationState to notifiers is unsound because they could access
unstable migration state internals or even modify the state. Instead, pass
the minimal info needed in a new MigrationEvent struct, which could be
extended in the future if needed.

Suggested-by: Peter Xu <peterx@redhat.com>
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/1708622920-68779-5-git-send-email-steven.sistare@oracle.com
Signed-off-by: Peter Xu <peterx@redhat.com>

show more ...

migration: convert to NotifierWithReturn

Change all migration notifiers to type NotifierWithReturn, so notifiers
can return an error status in a future patch. For now, pass NULL for the
notifier er

migration: convert to NotifierWithReturn

Change all migration notifiers to type NotifierWithReturn, so notifiers
can return an error status in a future patch. For now, pass NULL for the
notifier error parameter, and do not check the return value.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/1708622920-68779-4-git-send-email-steven.sistare@oracle.com
[peterx: dropped unexpected update to roms/seabios-hppa]
Signed-off-by: Peter Xu <peterx@redhat.com>

show more ...

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, cleanups, fixes

vhost-scsi support for worker ioctls

fixes, cleanups all over the

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, cleanups, fixes

vhost-scsi support for worker ioctls

fixes, cleanups all over the place.

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

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# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg: aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# 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

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (21 commits)
vdpa: move memory listener to vhost_vdpa_shared
vdpa: use dev_shared in vdpa_iommu
vdpa: use VhostVDPAShared in vdpa_dma_map and unmap
vdpa: move iommu_list to vhost_vdpa_shared
vdpa: remove msg type of vhost_vdpa
vdpa: move backend_cap to vhost_vdpa_shared
vdpa: move iotlb_batch_begin_sent to vhost_vdpa_shared
vdpa: move file descriptor to vhost_vdpa_shared
vdpa: use vdpa shared for tracing
vdpa: move shadow_data to vhost_vdpa_shared
vdpa: move iova_range to vhost_vdpa_shared
vdpa: move iova tree to the shared struct
vdpa: add VhostVDPAShared
vdpa: do not set virtio status bits if unneeded
Fix bugs when VM shutdown with virtio-gpu unplugged
vhost-scsi: fix usage of error_reportf_err()
hw/acpi: propagate vcpu hotplug after switch to modern interface
vhost-scsi: Add support for a worker thread per virtqueue
vhost: Add worker backend callouts
tests: bios-tables-test: Rename smbios type 4 related test functions
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

vdpa: use VhostVDPAShared in vdpa_dma_map and unmap

The callers only have the shared information by the end of this series.
Start converting this functions.

Signed-off-by: Eugenio Pérez <eperezma@r

vdpa: use VhostVDPAShared in vdpa_dma_map and unmap

The callers only have the shared information by the end of this series.
Start converting this functions.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-12-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: move file descriptor to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before

vdpa: move file descriptor to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopping the VM at the source. The main goal is to reduce the
downtime.

However, the destination QEMU is unaware of which vhost_vdpa device will
register its memory_listener. If the source guest has CVQ enabled, it
will be the CVQ device. Otherwise, it will be the first one.

Move the file descriptor to VhostVDPAShared so all vhost_vdpa can use
it, rather than always in the first / last vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-7-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: move shadow_data to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stop

vdpa: move shadow_data to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopping the VM at the source. The main goal is to reduce the
downtime.

However, the destination QEMU is unaware of which vhost_vdpa device will
register its memory_listener. If the source guest has CVQ enabled, it
will be the CVQ device. Otherwise, it will be the first one.

Move the shadow_data member to VhostVDPAShared so all vhost_vdpa can use
it, rather than always in the first or last vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-5-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: move iova_range to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopp

vdpa: move iova_range to vhost_vdpa_shared

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopping the VM at the source. The main goal is to reduce the
downtime.

However, the destination QEMU is unaware of which vhost_vdpa device will
register its memory_listener. If the source guest has CVQ enabled, it
will be the CVQ device. Otherwise, it will be the first one.

Move the iova range to VhostVDPAShared so all vhost_vdpa can use it,
rather than always in the first or last vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-4-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: move iova tree to the shared struct

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stoppi

vdpa: move iova tree to the shared struct

Next patches will register the vhost_vdpa memory listener while the VM
is migrating at the destination, so we can map the memory to the device
before stopping the VM at the source. The main goal is to reduce the
downtime.

However, the destination QEMU is unaware of which vhost_vdpa device will
register its memory_listener. If the source guest has CVQ enabled, it
will be the CVQ device. Otherwise, it will be the first one.

Move the iova tree to VhostVDPAShared so all vhost_vdpa can use it,
rather than always in the first or last vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-3-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: add VhostVDPAShared

It will hold properties shared among all vhost_vdpa instances associated
with of the same device. For example, we just need one iova_tree or one
memory listener for the en

vdpa: add VhostVDPAShared

It will hold properties shared among all vhost_vdpa instances associated
with of the same device. For example, we just need one iova_tree or one
memory listener for the entire device.

Next patches will register the vhost_vdpa memory listener at the
beginning of the VM migration at the destination. This enables QEMU to
map the memory to the device before stopping the VM at the source,
instead of doing while both source and destination are stopped, thus
minimizing the downtime.

However, the destination QEMU is unaware of which vhost_vdpa struct will
register its memory_listener. If the source guest has CVQ enabled, it
will be the one associated with the CVQ. Otherwise, it will be the
first one.

Save the memory operations related members in a common place rather than
always in the first / last vhost_vdpa.

Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20231221174322.3130442-2-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, fixes

virtio sound card support

vhost-user: back-end state migration

cxl:
l

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, fixes

virtio sound card support

vhost-user: back-end state migration

cxl:
line length reduction
enabling fabric management

vhost-vdpa:
shadow virtqueue hash calculation Support
shadow virtqueue RSS Support

tests:
CPU topology related smbios test cases

Fixes, cleanups all over the place

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

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# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
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# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (63 commits)
acpi/tests/avocado/bits: enable console logging from bits VM
acpi/tests/avocado/bits: enforce 32-bit SMBIOS entry point
hw/cxl: Add tunneled command support to mailbox for switch cci.
hw/cxl: Add dummy security state get
hw/cxl/type3: Cleanup multiple CXL_TYPE3() calls in read/write functions
hw/cxl/mbox: Add Get Background Operation Status Command
hw/cxl: Add support for device sanitation
hw/cxl/mbox: Wire up interrupts for background completion
hw/cxl/mbox: Add support for background operations
hw/cxl: Implement Physical Ports status retrieval
hw/pci-bridge/cxl_downstream: Set default link width and link speed
hw/cxl/mbox: Add Physical Switch Identify command.
hw/cxl/mbox: Add Information and Status / Identify command
hw/cxl: Add a switch mailbox CCI function
hw/pci-bridge/cxl_upstream: Move defintion of device to header.
hw/cxl/mbox: Generalize the CCI command processing
hw/cxl/mbox: Pull the CCI definition out of the CXLDeviceState
hw/cxl/mbox: Split mailbox command payload into separate input and output
hw/cxl/mbox: Pull the payload out of struct cxl_cmd and make instances constant
hw/cxl: Fix a QEMU_BUILD_BUG_ON() in switch statement scope issue.
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

vdpa: Allow VIRTIO_NET_F_RSS in SVQ

Enable SVQ with VIRTIO_NET_F_RSS feature.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <626449eb303207de408126b3dc7c155cd72b028b.1698195059.git

vdpa: Allow VIRTIO_NET_F_RSS in SVQ

Enable SVQ with VIRTIO_NET_F_RSS feature.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <626449eb303207de408126b3dc7c155cd72b028b.1698195059.git.yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: Restore receive-side scaling state

This patch reuses vhost_vdpa_net_load_rss() with some
refactorings to restore the receive-side scaling state
at device's startup.

Signed-off-by: Hawkins Jia

vdpa: Restore receive-side scaling state

This patch reuses vhost_vdpa_net_load_rss() with some
refactorings to restore the receive-side scaling state
at device's startup.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <cf5b78a16ed0318982ceffb195f2227f6aad4ac1.1698195059.git.yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: Add SetSteeringEBPF method for NetClientState

At present, to enable the VIRTIO_NET_F_RSS feature, eBPF must
be loaded for the vhost backend.

Given that vhost-vdpa is one of the vhost backend,

vdpa: Add SetSteeringEBPF method for NetClientState

At present, to enable the VIRTIO_NET_F_RSS feature, eBPF must
be loaded for the vhost backend.

Given that vhost-vdpa is one of the vhost backend, we need to
implement the SetSteeringEBPF method to support RSS for vhost-vdpa,
even if vhost-vdpa calculates the rss hash in the hardware device
instead of in the kernel by eBPF.

Although this requires QEMU to be compiled with `--enable-bpf`
configuration even if the vdpa device does not use eBPF to
calculate the rss hash, this can avoid adding the specific
conditional statements for vDPA case to enable the VIRTIO_NET_F_RSS
feature, which reduces code maintainbility.

Suggested-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <280e20ddce55b6de60f1552ba0865bffffe909b2.1698195059.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: Allow VIRTIO_NET_F_HASH_REPORT in SVQ

Enable SVQ with VIRTIO_NET_F_HASH_REPORT feature.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <d66b0aee501cdad7954231900c35a11cad1e13d

vdpa: Allow VIRTIO_NET_F_HASH_REPORT in SVQ

Enable SVQ with VIRTIO_NET_F_HASH_REPORT feature.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <d66b0aee501cdad7954231900c35a11cad1e13db.1698194366.git.yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

vdpa: Restore hash calculation state

This patch introduces vhost_vdpa_net_load_rss() to restore
the hash calculation state at device's startup.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Me

vdpa: Restore hash calculation state

This patch introduces vhost_vdpa_net_load_rss() to restore
the hash calculation state at device's startup.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <dbf699acff8c226596136a55a6abe35ebfeac8b0.1698194366.git.yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

show more ...

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, cleanups

infrastructure for vhost-vdpa shadow work
piix south bridge rework
reconn

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pc,pci: features, cleanups

infrastructure for vhost-vdpa shadow work
piix south bridge rework
reconnect for vhost-user-scsi
dummy ACPI QTG DSM for cxl

tests, cleanups, fixes all over the place

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

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# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
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# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17 0970 C350 3912 AFBE 8E67
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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (62 commits)
intel-iommu: Report interrupt remapping faults, fix return value
MAINTAINERS: Add include/hw/intc/i8259.h to the PC chip section
vhost-user: Fix protocol feature bit conflict
tests/acpi: Update DSDT.cxl with QTG DSM
hw/cxl: Add QTG _DSM support for ACPI0017 device
tests/acpi: Allow update of DSDT.cxl
hw/i386/cxl: ensure maxram is greater than ram size for calculating cxl range
vhost-user: fix lost reconnect
vhost-user-scsi: start vhost when guest kicks
vhost-user-scsi: support reconnect to backend
vhost: move and rename the conn retry times
vhost-user-common: send get_inflight_fd once
hw/i386/pc_piix: Make PIIX4 south bridge usable in PC machine
hw/isa/piix: Implement multi-process QEMU support also for PIIX4
hw/isa/piix: Resolve duplicate code regarding PCI interrupt wiring
hw/isa/piix: Reuse PIIX3's PCI interrupt triggering in PIIX4
hw/isa/piix: Rename functions to be shared for PCI interrupt triggering
hw/isa/piix: Reuse PIIX3 base class' realize method in PIIX4
hw/isa/piix: Share PIIX3's base class with PIIX4
hw/isa/piix: Harmonize names of reset control memory regions
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

Merge tag 'migration-20231020-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231020)

In this pull request:
- disable analyze-migration on s390x (thoma

Merge tag 'migration-20231020-pull-request' of https://gitlab.com/juan.quintela/qemu into staging

Migration Pull request (20231020)

In this pull request:
- disable analyze-migration on s390x (thomas)
- Fix parse_ramblock() (peter)
- start merging live update (steve)
- migration-test support for using several binaries (fabiano)
- multifd cleanups (fabiano)

CI: https://gitlab.com/juan.quintela/qemu/-/pipelines/1042492801

Please apply.

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# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 19 Oct 2023 23:57:15 PDT
# gpg: using RSA key 1899FF8EDEBF58CCEE034B82F487EF185872D723
# gpg: Good signature from "Juan Quintela <quintela@redhat.com>" [full]
# gpg: aka "Juan Quintela <quintela@trasno.org>" [full]
# Primary key fingerprint: 1899 FF8E DEBF 58CC EE03 4B82 F487 EF18 5872 D723

* tag 'migration-20231020-pull-request' of https://gitlab.com/juan.quintela/qemu:
tests/qtest: Don't print messages from query instances
tests/qtest/migration: Allow user to specify a machine type
tests/qtest/migration: Support more than one QEMU binary
tests/qtest/migration: Set q35 as the default machine for x86_86
tests/qtest/migration: Specify the geometry of the bootsector
tests/qtest/migration: Define a machine for all architectures
tests/qtest/migration: Introduce find_common_machine_version
tests/qtest: Introduce qtest_resolve_machine_alias
tests/qtest: Introduce qtest_has_machine_with_env
tests/qtest: Allow qtest_get_machines to use an alternate QEMU binary
tests/qtest: Introduce qtest_init_with_env
tests/qtest: Allow qtest_qemu_binary to use a custom environment variable
migration/multifd: Stop checking p->quit in multifd_send_thread
migration: simplify notifiers
migration: Fix parse_ramblock() on overwritten retvals
migration: simplify blockers
tests/qtest/migration-test: Disable the analyze-migration.py test on s390x

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

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migration: simplify notifiers

Pass the callback function to add_migration_state_change_notifier so
that migration can initialize the notifier on add and clear it on
delete, which simplifies the call

migration: simplify notifiers

Pass the callback function to add_migration_state_change_notifier so
that migration can initialize the notifier on add and clear it on
delete, which simplifies the call sites. Shorten the function names
so the extra arg can be added more legibly. Hide the global notifier
list in a new function migration_call_notifiers, and make it externally
visible so future live update code can call it.

No functional change.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Tested-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Michael Galaxy <mgalaxy@akamai.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
Message-ID: <1686148954-250144-1-git-send-email-steven.sistare@oracle.com>

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vdpa: Send cvq state load commands in parallel

This patch enables sending CVQ state load commands
in parallel at device startup by following steps:

* Refactor vhost_vdpa_net_load_cmd() to iterate

vdpa: Send cvq state load commands in parallel

This patch enables sending CVQ state load commands
in parallel at device startup by following steps:

* Refactor vhost_vdpa_net_load_cmd() to iterate through
the control commands shadow buffers. This allows different
CVQ state load commands to use their own unique buffers.

* Delay the polling and checking of buffers until either
the SVQ is full or control commands shadow buffers are full.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1578
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <9350f32278e39f7bce297b8f2d82dac27c6f8c9a.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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vdpa: Introduce cursors to vhost_vdpa_net_loadx()

This patch introduces two new arugments, `out_cursor`
and `in_cursor`, to vhost_vdpa_net_loadx(). Addtionally,
it includes a helper function
vhost_v

vdpa: Introduce cursors to vhost_vdpa_net_loadx()

This patch introduces two new arugments, `out_cursor`
and `in_cursor`, to vhost_vdpa_net_loadx(). Addtionally,
it includes a helper function
vhost_vdpa_net_load_cursor_reset() for resetting these
cursors.

Furthermore, this patch refactors vhost_vdpa_net_load_cmd()
so that vhost_vdpa_net_load_cmd() prepares buffers
for the device using the cursors arguments, instead
of directly accesses `s->cvq_cmd_out_buffer` and
`s->status` fields.

By making these change, next patches in this series
can refactor vhost_vdpa_net_load_cmd() directly to
iterate through the control commands shadow buffers,
allowing QEMU to send CVQ state load commands in parallel
at device startup.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <1c6516e233a14cc222f0884e148e4e1adceda78d.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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vdpa: Move vhost_svq_poll() to the caller of vhost_vdpa_net_cvq_add()

This patch moves vhost_svq_poll() to the caller of
vhost_vdpa_net_cvq_add() and introduces a helper funtion.

By making this cha

vdpa: Move vhost_svq_poll() to the caller of vhost_vdpa_net_cvq_add()

This patch moves vhost_svq_poll() to the caller of
vhost_vdpa_net_cvq_add() and introduces a helper funtion.

By making this change, next patches in this series is
able to refactor vhost_vdpa_net_load_x() only to delay
the polling and checking process until either the SVQ
is full or control commands shadow buffers are full.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <196cadb55175a75275660c6634a538289f027ae3.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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vdpa: Check device ack in vhost_vdpa_net_load_rx_mode()

Considering that vhost_vdpa_net_load_rx_mode() is only called
within vhost_vdpa_net_load_rx() now, this patch refactors
vhost_vdpa_net_load_rx

vdpa: Check device ack in vhost_vdpa_net_load_rx_mode()

Considering that vhost_vdpa_net_load_rx_mode() is only called
within vhost_vdpa_net_load_rx() now, this patch refactors
vhost_vdpa_net_load_rx_mode() to include a check for the
device's ack, simplifying the code and improving its maintainability.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <68811d52f96ae12d68f0d67d996ac1642a623943.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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vdpa: Avoid using vhost_vdpa_net_load_*() outside vhost_vdpa_net_load()

Next patches in this series will refactor vhost_vdpa_net_load_cmd()
to iterate through the control commands shadow buffers, al

vdpa: Avoid using vhost_vdpa_net_load_*() outside vhost_vdpa_net_load()

Next patches in this series will refactor vhost_vdpa_net_load_cmd()
to iterate through the control commands shadow buffers, allowing QEMU
to send CVQ state load commands in parallel at device startup.

Considering that QEMU always forwards the CVQ command serialized
outside of vhost_vdpa_net_load(), it is more elegant to send the
CVQ commands directly without invoking vhost_vdpa_net_load_*() helpers.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <254f0618efde7af7229ba4fdada667bb9d318991.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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vdpa: Use iovec for vhost_vdpa_net_cvq_add()

Next patches in this series will no longer perform an
immediate poll and check of the device's used buffers
for each CVQ state load command. Consequently

vdpa: Use iovec for vhost_vdpa_net_cvq_add()

Next patches in this series will no longer perform an
immediate poll and check of the device's used buffers
for each CVQ state load command. Consequently, there
will be multiple pending buffers in the shadow VirtQueue,
making it a must for every control command to have its
own buffer.

To achieve this, this patch refactor vhost_vdpa_net_cvq_add()
to accept `struct iovec`, which eliminates the coupling of
control commands to `s->cvq_cmd_out_buffer` and `s->status`,
allowing them to use their own buffer.

Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <8a328f146fb043f34edb75ba6d043d2d6de88f99.1697165821.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pci: features, cleanups

vdpa:
shadow vq vlan support
net migration with cvq
cxl:
su

Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio,pci: features, cleanups

vdpa:
shadow vq vlan support
net migration with cvq
cxl:
support emulating 4 HDM decoders
serial number extended capability
virtio:
hared dma-buf

Fixes, cleanups all over the place.

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

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (53 commits)
libvhost-user: handle shared_object msg
vhost-user: add shared_object msg
hw/display: introduce virtio-dmabuf
util/uuid: add a hash function
virtio: remove unused next argument from virtqueue_split_read_next_desc()
virtio: remove unnecessary thread fence while reading next descriptor
virtio: use shadow_avail_idx while checking number of heads
libvhost-user.c: add assertion to vu_message_read_default
pcie_sriov: unregister_vfs(): fix error path
hw/i386/pc: improve physical address space bound check for 32-bit x86 systems
amd_iommu: Fix APIC address check
vdpa net: follow VirtIO initialization properly at cvq isolation probing
vdpa net: stop probing if cannot set features
vdpa net: fix error message setting virtio status
hw/pci-bridge/cxl-upstream: Add serial number extended capability support
hw/cxl: Support 4 HDM decoders at all levels of topology
hw/cxl: Fix and use same calculation for HDM decoder block size everywhere
hw/cxl: Add utility functions decoder interleave ways and target count.
hw/cxl: Push cxl_decoder_count_enc() and cxl_decode_ig() into .c
vdpa net: zero vhost_vdpa iova_tree pointer at cleanup
...

Conflicts:
hw/core/machine.c
Context conflict with commit 314e0a84cd5d ("hw/core: remove needless
includes") because it removed an adjacent #include.

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