This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_(un)freeze_backing_chain() need to hold a reader lock for the
graph because it calls bdrv_filter_or_cow_child(), which accesses
bs->file/backing.
Use the opportunity to make bdrv_is_backing_chain_frozen() static, it
has no external callers.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-10-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_skip_filters() need to hold a reader lock for the graph because it
calls bdrv_filter_child(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-9-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_skip_implicit_filters() need to hold a reader lock for the graph
because it calls bdrv_filter_child(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-8-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_filter_or_cow_bs() need to hold a reader lock for the graph because
it calls bdrv_filter_or_cow_child(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-7-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Instead of taking the writer lock internally, require callers to already
hold it when calling block_job_add_bdrv(). These callers will typically
already hold the graph lock once the locking work is completed, which
means that they can't call functions that take it internally.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-6-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Instead of taking the writer lock internally, require callers to already
hold it when calling bdrv_root_attach_child(). These callers will
typically already hold the graph lock once the locking work is
completed, which means that they can't call functions that take it
internally.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-5-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_filter_bs() need to hold a reader lock for the graph because
it calls bdrv_filter_child(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-4-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_has_zero_init() need to hold a reader lock for the graph because
it calls bdrv_filter_bs(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-3-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This adds GRAPH_RDLOCK annotations to declare that callers of
bdrv_probe_blocksizes() need to hold a reader lock for the graph because
it calls bdrv_filter_bs(), which accesses bs->file/backing.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20231027155333.420094-2-kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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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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: issuer "mst@redhat.com"
# 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: (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>
Add Xen PV console and network support, the former of which enables the
Xen "PV shim" to be used to support PV guests.
Also clean up the block support and make it work when the user passes
just 'drive file=IMAGE,if=xen' on the command line.
Update the documentation to reflect all of these, taking the opportunity
to simplify what it says about q35 by making unplug work for AHCI.
Ignore the VCPU_SSHOTTMR_future timer flag, and advertise the 'fixed'
per-vCPU upcall vector support, as newer upstream Xen do.
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Merge tag 'pull-xenfv.for-upstream-20231107' of git://git.infradead.org/users/dwmw2/qemu into staging
Xen PV guest support for 8.2
Add Xen PV console and network support, the former of which enables the
Xen "PV shim" to be used to support PV guests.
Also clean up the block support and make it work when the user passes
just 'drive file=IMAGE,if=xen' on the command line.
Update the documentation to reflect all of these, taking the opportunity
to simplify what it says about q35 by making unplug work for AHCI.
Ignore the VCPU_SSHOTTMR_future timer flag, and advertise the 'fixed'
per-vCPU upcall vector support, as newer upstream Xen do.
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# gpg: Signature made Tue 07 Nov 2023 17:13:21 HKT
# gpg: using RSA key BE07D9FD54809AB2C4B0FF5F63762CDA67E2F359
# gpg: issuer "dwmw2@infradead.org"
# gpg: Good signature from "David Woodhouse <dwmw2@infradead.org>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@exim.org>" [unknown]
# gpg: aka "David Woodhouse <david@woodhou.se>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@kernel.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: BE07 D9FD 5480 9AB2 C4B0 FF5F 6376 2CDA 67E2 F359
* tag 'pull-xenfv.for-upstream-20231107' of git://git.infradead.org/users/dwmw2/qemu:
docs: update Xen-on-KVM documentation
xen-platform: unplug AHCI disks
hw/i386/pc: support '-nic' for xen-net-device
hw/xen: update Xen PV NIC to XenDevice model
hw/xen: only remove peers of PCI NICs on unplug
hw/xen: add support for Xen primary console in emulated mode
hw/xen: update Xen console to XenDevice model
hw/xen: do not repeatedly try to create a failing backend device
hw/xen: add get_frontend_path() method to XenDeviceClass
hw/xen: automatically assign device index to block devices
hw/xen: populate store frontend nodes with XenStore PFN/port
i386/xen: advertise XEN_HVM_CPUID_UPCALL_VECTOR in CPUID
include: update Xen public headers to Xen 4.17.2 release
hw/xen: Clean up event channel 'type_val' handling to use union
i386/xen: Ignore VCPU_SSHOTTMR_future flag in set_singleshot_timer()
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Use a simpler implementation for rectangle geometry & intersect, drop
the need for (more complex) PIXMAN functions.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
If a display is backed by a specialized VC, allow to override the
default "vc:80Cx24C".
As suggested by Paolo, if the display doesn't implement a VC (get_vc()
returns NULL), use a fallback that will use a muxed console on stdio.
This changes the behaviour of "qemu -display none", to create a muxed
serial/monitor by default (on TTY & not daemonized).
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
This is a tiny subset of PIXMAN API that is used pervasively in QEMU
codebase to manage images and identify the underlying format.
It doesn't seems worth to wrap this in a QEMU-specific API.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Those functions require the PIXMAN library.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
For now, pixman is mandatory, but we set config_host.h and Kconfig.
Once compilation is fixed, "pixman" will become actually optional.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
The default NIC creation seems a bit hackish to me. I don't understand
why each platform has to call pci_nic_init_nofail() from a point in the
code where it actually has a pointer to the PCI bus, and then we have
the special cases for things like ne2k_isa.
If qmp_device_add() can *find* the appropriate bus and instantiate
the device on it, why can't we just do that from generic code for
creating the default NICs too?
But that isn't a yak I want to shave today. Add a xenbus field to the
PCMachineState so that it can make its way from pc_basic_device_init()
to pc_nic_init() and be handled as a special case like ne2k_isa is.
Now we can launch emulated Xen guests with '-nic user'.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
The primary console is special because the toolstack maps a page into
the guest for its ring, and also allocates the guest-side event channel.
The guest's grant table is even primed to export that page using a known
grant ref#. Add support for all that in emulated mode, so that we can
have a primary console.
For reasons unclear, the backends running under real Xen don't just use
a mapping of the well-known GNTTAB_RESERVED_CONSOLE grant ref (which
would also be in the ring-ref node in XenStore). Instead, the toolstack
sets the ring-ref node of the primary console to the GFN of the guest
page. The backend is expected to handle that special case and map it
with foreignmem operations instead.
We don't have an implementation of foreignmem ops for emulated Xen mode,
so just make it map GNTTAB_RESERVED_CONSOLE instead. This would probably
work for real Xen too, but we can't work out how to make real Xen create
a primary console of type "ioemu" to make QEMU drive it, so we can't
test that; might as well leave it as it is for now under Xen.
Now at last we can boot the Xen PV shim and run PV kernels in QEMU.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
If xen_backend_device_create() fails to instantiate a device, the XenBus
code will just keep trying over and over again each time the bus is
re-enumerated, as long as the backend appears online and in
XenbusStateInitialising.
The only thing which prevents the XenBus code from recreating duplicates
of devices which already exist, is the fact that xen_device_realize()
sets the backend state to XenbusStateInitWait. If the attempt to create
the device doesn't get *that* far, that's when it will keep getting
retried.
My first thought was to handle errors by setting the backend state to
XenbusStateClosed, but that doesn't work for XenConsole which wants to
*ignore* any device of type != "ioemu" completely.
So, make xen_backend_device_create() *keep* the XenBackendInstance for a
failed device, and provide a new xen_backend_exists() function to allow
xen_bus_type_enumerate() to check whether one already exists before
creating a new one.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
The primary Xen console is special. The guest's side is set up for it by
the toolstack automatically and not by the standard PV init sequence.
Accordingly, its *frontend* doesn't appear in …/device/console/0 either;
instead it appears under …/console in the guest's XenStore node.
To allow the Xen console driver to override the frontend path for the
primary console, add a method to the XenDeviceClass which can be used
instead of the standard xen_device_get_frontend_path()
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
There's no need to force the user to assign a vdev. We can automatically
assign one, starting at xvda and searching until we find the first disk
name that's unused.
This means we can now allow '-drive if=xen,file=xxx' to work without an
explicit separate -driver argument, just like if=virtio.
Rip out the legacy handling from the xenpv machine, which was scribbling
over any disks configured by the toolstack, and didn't work with anything
but raw images.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Paul Durrant <paul@xen.org>
... in order to advertise the XEN_HVM_CPUID_UPCALL_VECTOR feature,
which will come in a subsequent commit.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Acked-by: Paul Durrant <paul@xen.org>
This implementation of tunneling makes the choice that our Type 3 device is
a Logical Device (LD) of a Multi-Logical Device (MLD) that just happens to
only have one LD for now.
Tunneling is supported from a Switch Mailbox CCI (and shortly via MCTP over
I2C connected to the switch MCTP CCI) via an outer level to the FM owned LD
in the MLD Type 3 device. From there an inner tunnel may be used to access
particular LDs.
Protocol wise, the following is what happens in a real system but we
don't emulate the transports - just the destinations and the payloads.
( Host -> Switch Mailbox CCI - in band FM-API mailbox command
or
Host -> Switch MCTP CCI - MCTP over I2C using the CXL FM-API
MCTP Binding.
)
then (if a tunnel command)
Switch -> Type 3 FM Owned LD - MCTP over PCI VDM using the
CXL FM-API binding (addressed by switch port)
then (if unwrapped command also a tunnel command)
Type 3 FM Owned LD to LD0 via internal transport
(addressed by LD number)
or (added shortly)
Host to Type 3 FM Owned MCTP CCI - MCTP over I2C using the
CXL FM-API MCTP Binding.
then (if unwrapped comand is a tunnel comamnd)
Type 3 FM Owned LD to LD0 via internal transport.
(addressed by LD number)
It is worth noting that the tunneling commands over PCI VDM
presumably use the appropriate MCTP binding depending on opcode.
This may be the CXL FMAPI binding or the CXL Memory Device Binding.
Additional commands will need to be added to make this
useful beyond testing the tunneling works.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-18-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Make use of the background operations through the sanitize command, per CXL
3.0 specs. Traditionally run times can be rather long, depending on the
size of the media.
Estimate times based on:
https://pmem.io/documents/NVDIMM_DSM_Interface-V1.8.pdf
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-14-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Notify when the background operation is done. Note that for now background
commands are only supported on the main Type 3 mailbox.
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-13-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Support background commands in the mailbox, and update
cmd_infostat_bg_op_sts() accordingly. This patch does not implement mbox
interrupts upon completion, so the kernel driver must rely on polling to
know when the operation is done.
Signed-off-by: Davidlohr Bueso <dave@stgolabs.net>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-12-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Enable it for the switch CCI.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-9-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
CXL switch CCIs were added in CXL r3.0. They are a PCI function,
identified by class code that provides a CXL mailbox (identical
to that previously defined for CXL type 3 memory devices) over which
various FM-API commands may be used. Whilst the intent of this
feature is enable switch control from a BMC attached to a switch
upstream port, it is also useful to allow emulation of this feature
on the upstream port connected to a host using the CXL devices as
this greatly simplifies testing.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-7-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To avoid repetition of switch upstream port specific data in the
CXLDeviceState structure it will be necessary to access the switch USP
specific data from mailbox callbacks. Hence move it to cxl_device.h so it
is no longer an opaque structure.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20231023160806.13206-6-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
By moving the parts of the mailbox command handling that are CCI type
specific out to the caller, make the main handling code generic. Rename it
to cxl_process_cci_message() to reflect this new generality.
Change the type3 mailbox handling (reused shortly for the switch
mailbox CCI) to take a snapshot of the mailbox input data rather
than operating on it in place. This reduces the chance of bugs
due to aliasing going forwars.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Enables having multiple CCIs per devices. Each CCI (mailbox) has it's own
state and command list, so they can't share a single structure.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
New CCI types that will be supported shortly do not have a single buffer
used in both directions. As such, split it up. To avoid the complexities
of implementing all commands to handle potential aliasing, take a copy of
the input before use.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20231023160806.13206-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Putting the pointer in the structure for command handling puts a single
variable element inside an otherwise constant structure. Move it out as
a directly passed variable and take the cxl_cmd structures constant.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20231023160806.13206-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Michael Tsirkin observed that there were some unnecessarily
long lines in the CXL code in a recent review.
This patch is intended to rectify that where it does not
hurt readability.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20231023140210.3089-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Done to reduce line lengths where this is used.
Ext seems sufficiently obvious that it need not be spelt out
fully.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Message-Id: <20231023140210.3089-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Handle output IO messages in the transmit (TX) virtqueue.
It allocates a VirtIOSoundPCMBuffer for each IO message and copies the
data buffer to it. When the IO buffer is written to the host's sound
card, the guest will be notified that it has been consumed.
The lifetime of an IO message is:
1. Guest sends IO message to TX virtqueue.
2. QEMU adds it to the appropriate stream's IO buffer queue.
3. Sometime later, the host audio backend calls the output callback,
virtio_snd_pcm_out_cb(), which is defined with an AUD_open_out()
call. The callback gets an available number of bytes the backend can
receive. Then it writes data from the IO buffer queue to the backend.
If at any time a buffer is exhausted, it is returned to the guest as
completed.
4. If the guest releases the stream, its buffer queue is flushed by
attempting to write any leftover data to the audio backend and
releasing all IO messages back to the guest. This is how according to
the spec the guest knows the release was successful.
Based-on: 5a2f350eec
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <b7c6fc458c763d09a4abbcb620ae9b220afa5b8f.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Receive guest requests in the control (CTRL) queue of the virtio sound
device and reply with a NOT SUPPORTED error to all control commands.
The receiving handler is virtio_snd_handle_ctrl(). It stores all control
messages in the queue in the device's command queue. Then it calls
virtio_snd_process_cmdq() to handle each message.
The handler is process_cmd() which replies with VIRTIO_SND_S_NOT_SUPP.
Based-on: 5a2f350eec
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <3224aff87e7c4f2777bfe1bbbbca93b72525992c.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add a new VIRTIO device for the virtio sound device id. Functionality
will be added in the following commits.
Based-on: 5a2f350eec
Signed-off-by: Igor Skalkin <Igor.Skalkin@opensynergy.com>
Signed-off-by: Anton Yakovlev <Anton.Yakovlev@opensynergy.com>
Signed-off-by: Manos Pitsidianakis <manos.pitsidianakis@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <f9678a41fe97b5886c1b04795f1be046509de866.1698062525.git.manos.pitsidianakis@linaro.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
vhost_save_backend_state() and vhost_load_backend_state() can be used by
vhost front-ends to easily save and load the back-end's state to/from
the migration stream.
Because we do not know the full state size ahead of time,
vhost_save_backend_state() simply reads the data in 1 MB chunks, and
writes each chunk consecutively into the migration stream, prefixed by
its length. EOF is indicated by a 0-length chunk.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20231016134243.68248-7-hreitz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add the interface for transferring the back-end's state during migration
as defined previously in vhost-user.rst.
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Hanna Czenczek <hreitz@redhat.com>
Message-Id: <20231016134243.68248-6-hreitz@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
hw/hppa: Map astro chip 64-bit I/O mem
hw/hppa: Turn on 64-bit cpu for C3700
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Merge tag 'pull-pa-20231106' of https://gitlab.com/rth7680/qemu into staging
target/hppa: Implement PA2.0 instructions
hw/hppa: Map astro chip 64-bit I/O mem
hw/hppa: Turn on 64-bit cpu for C3700
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# gpg: Signature made Tue 07 Nov 2023 11:00:01 HKT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [full]
# Primary key fingerprint: 7A48 1E78 868B 4DB6 A85A 05C0 64DF 38E8 AF7E 215F
* tag 'pull-pa-20231106' of https://gitlab.com/rth7680/qemu: (85 commits)
hw/hppa: Allow C3700 with 64-bit and B160L with 32-bit CPU only
hw/hppa: Turn on 64-bit CPU for C3700 machine
hw/pci-host/astro: Trigger CPU irq on CPU HPA in high memory
hw/pci-host/astro: Map Astro chip into 64-bit I/O memory region
target/hppa: Improve interrupt logging
target/hppa: Update IIAOQ, IIASQ for pa2.0
target/hppa: Create raise_exception_with_ior
target/hppa: Add unwind_breg to CPUHPPAState
target/hppa: Clear upper bits in mtctl for pa1.x
target/hppa: Avoid async_safe_run_on_cpu on uniprocessor system
target/hppa: Add pa2.0 cpu local tlb flushes
target/hppa: Implement pa2.0 data prefetch instructions
linux-user/hppa: Drop EXCP_DUMP from handled exceptions
hw/hppa: Translate phys addresses for the cpu
include/hw/elf: Remove truncating signed casts
target/hppa: Return zero for r0 from load_gpr
target/hppa: Precompute zero into DisasContext
target/hppa: Fix interruption based on default PSW
target/hppa: Implement PERMH
target/hppa: Implement MIXH, MIXW
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
There's nothing about elf that specifically requires signed vs unsigned.
This is very much a target-specific preference.
In the meantime, casting low and high from uint64_t back to Elf_SWord
to uint64_t discards high bits that might have been set by translate_fn.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* Support for non 64b IOVA space
* Introduction of a PCIIOMMUOps callback structure to ease future
extensions
* Fix for a buffer overrun when writing the VF token
* PPC cleanups preparing ground for IOMMUFD support
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Merge tag 'pull-vfio-20231106' of https://github.com/legoater/qemu into staging
vfio queue:
* Support for non 64b IOVA space
* Introduction of a PCIIOMMUOps callback structure to ease future
extensions
* Fix for a buffer overrun when writing the VF token
* PPC cleanups preparing ground for IOMMUFD support
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# gpg: Signature made Mon 06 Nov 2023 22:35:30 HKT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [unknown]
# gpg: aka "Cédric Le Goater <clg@kaod.org>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B 0B60 51A3 43C7 CFFB ECA1
* tag 'pull-vfio-20231106' of https://github.com/legoater/qemu: (22 commits)
vfio/common: Move vfio_host_win_add/del into spapr.c
vfio/spapr: Make vfio_spapr_create/remove_window static
vfio/container: Move spapr specific init/deinit into spapr.c
vfio/container: Move vfio_container_add/del_section_window into spapr.c
vfio/container: Move IBM EEH related functions into spapr_pci_vfio.c
util/uuid: Define UUID_STR_LEN from UUID_NONE string
util/uuid: Remove UUID_FMT_LEN
vfio/pci: Fix buffer overrun when writing the VF token
util/uuid: Add UUID_STR_LEN definition
hw/pci: modify pci_setup_iommu() to set PCIIOMMUOps
test: Add some tests for range and resv-mem helpers
virtio-iommu: Consolidate host reserved regions and property set ones
virtio-iommu: Implement set_iova_ranges() callback
virtio-iommu: Record whether a probe request has been issued
range: Introduce range_inverse_array()
virtio-iommu: Introduce per IOMMUDevice reserved regions
util/reserved-region: Add new ReservedRegion helpers
range: Make range_compare() public
virtio-iommu: Rename reserved_regions into prop_resv_regions
vfio: Collect container iova range info
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This driver is like virtio-balloon on steroids for Windows guests:
it allows both changing the guest memory allocation via ballooning and
inserting pieces of extra RAM into it on demand from a provided memory
backend via Windows-native Hyper-V Dynamic Memory protocol.
* Preparatory patches to support empty memory devices and ones with
large alignment requirements.
* Revert of recently added "hw/virtio/virtio-pmem: Replace impossible
check by assertion" commit 5960f254db since this series makes this
situation possible again.
* Protocol definitions.
* Hyper-V DM protocol driver (hv-balloon) base (ballooning only).
* Hyper-V DM protocol driver (hv-balloon) hot-add support.
* qapi query-memory-devices support for the driver.
* qapi HV_BALLOON_STATUS_REPORT event.
* The relevant PC machine plumbing.
* New MAINTAINERS entry for the above.
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Merge tag 'pull-hv-balloon-20231106' of https://github.com/maciejsszmigiero/qemu into staging
Hyper-V Dynamic Memory protocol driver.
This driver is like virtio-balloon on steroids for Windows guests:
it allows both changing the guest memory allocation via ballooning and
inserting pieces of extra RAM into it on demand from a provided memory
backend via Windows-native Hyper-V Dynamic Memory protocol.
* Preparatory patches to support empty memory devices and ones with
large alignment requirements.
* Revert of recently added "hw/virtio/virtio-pmem: Replace impossible
check by assertion" commit 5960f254db since this series makes this
situation possible again.
* Protocol definitions.
* Hyper-V DM protocol driver (hv-balloon) base (ballooning only).
* Hyper-V DM protocol driver (hv-balloon) hot-add support.
* qapi query-memory-devices support for the driver.
* qapi HV_BALLOON_STATUS_REPORT event.
* The relevant PC machine plumbing.
* New MAINTAINERS entry for the above.
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# gpg: Signature made Mon 06 Nov 2023 22:08:18 HKT
# gpg: using RSA key E2776AABA08E26FF5A1B4A0952B1D6E951D0CE07
# gpg: Good signature from "Maciej S. Szmigiero <mail@maciej.szmigiero.name>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 727A 0D4D DB9E D9F6 039B ECEF 847F 5E37 90CE 0977
# Subkey fingerprint: E277 6AAB A08E 26FF 5A1B 4A09 52B1 D6E9 51D0 CE07
* tag 'pull-hv-balloon-20231106' of https://github.com/maciejsszmigiero/qemu:
MAINTAINERS: Add an entry for Hyper-V Dynamic Memory Protocol
hw/i386/pc: Support hv-balloon
qapi: Add HV_BALLOON_STATUS_REPORT event and its QMP query command
qapi: Add query-memory-devices support to hv-balloon
Add Hyper-V Dynamic Memory Protocol driver (hv-balloon) hot-add support
Add Hyper-V Dynamic Memory Protocol driver (hv-balloon) base
Add Hyper-V Dynamic Memory Protocol definitions
memory-device: Drop size alignment check
Revert "hw/virtio/virtio-pmem: Replace impossible check by assertion"
memory-device: Support empty memory devices
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Selected bugfixes for mainline and stable, especially to the per-vCPU
local APIC vector delivery mode for event channel notifications, which
was broken in a number of ways.
The xen-block driver has been defaulting to the wrong protocol for x86
guest, and this fixes that — which is technically an incompatible change
but I'm fairly sure nobody relies on the broken behaviour (and in
production I *have* seen guests which rely on the correct behaviour,
which now matches the blkback driver in the Linux kernel).
A handful of other simple fixes for issues which came to light as new
features (qv) were being developed.
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Merge tag 'pull-xenfv-stable-20231106' of git://git.infradead.org/users/dwmw2/qemu into staging
Bugfixes for emulated Xen support
Selected bugfixes for mainline and stable, especially to the per-vCPU
local APIC vector delivery mode for event channel notifications, which
was broken in a number of ways.
The xen-block driver has been defaulting to the wrong protocol for x86
guest, and this fixes that — which is technically an incompatible change
but I'm fairly sure nobody relies on the broken behaviour (and in
production I *have* seen guests which rely on the correct behaviour,
which now matches the blkback driver in the Linux kernel).
A handful of other simple fixes for issues which came to light as new
features (qv) were being developed.
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# =dQ7h
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 06 Nov 2023 18:25:02 HKT
# gpg: using RSA key BE07D9FD54809AB2C4B0FF5F63762CDA67E2F359
# gpg: issuer "dwmw2@infradead.org"
# gpg: Good signature from "David Woodhouse <dwmw2@infradead.org>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@exim.org>" [unknown]
# gpg: aka "David Woodhouse <david@woodhou.se>" [unknown]
# gpg: aka "David Woodhouse <dwmw2@kernel.org>" [unknown]
# gpg: WARNING: The key's User ID is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: BE07 D9FD 5480 9AB2 C4B0 FF5F 6376 2CDA 67E2 F359
* tag 'pull-xenfv-stable-20231106' of git://git.infradead.org/users/dwmw2/qemu:
hw/xen: use correct default protocol for xen-block on x86
hw/xen: take iothread mutex in xen_evtchn_reset_op()
hw/xen: fix XenStore watch delivery to guest
hw/xen: don't clear map_track[] in xen_gnttab_reset()
hw/xen: select kernel mode for per-vCPU event channel upcall vector
i386/xen: fix per-vCPU upcall vector for Xen emulation
i386/xen: Don't advertise XENFEAT_supervisor_mode_kernel
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The movcond opcode is now mandatory for backends to implement.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231026041404.1229328-7-richard.henderson@linaro.org>
The movcond opcode is now mandatory for backends to implement.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231026041404.1229328-4-richard.henderson@linaro.org>
