Commit graph

743 commits

Author SHA1 Message Date
Stefan Hajnoczi
1843a0c01d * scripts: dump stdin on meson-buildoptions error
* rust: introduce qemu_api::cell::Opaque<>
 * rust: express pinning requirements for timers
 * rust: hpet: decode HPET registers into enums
 * rust: cell: add full example of declaring a SysBusDevice
 * rust: qom: remove operations on &mut
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* scripts: dump stdin on meson-buildoptions error
* rust: introduce qemu_api::cell::Opaque<>
* rust: express pinning requirements for timers
* rust: hpet: decode HPET registers into enums
* rust: cell: add full example of declaring a SysBusDevice
* rust: qom: remove operations on &mut

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# gpg: Signature made Sun 09 Mar 2025 18:29:16 HKT
# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg:                issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu: (25 commits)
  rust: pl011: Allow NULL chardev argument to pl011_create()
  meson.build: default to -gsplit-dwarf for debug info
  rust: qom: remove operations on &mut
  rust: cell: add full example of declaring a SysBusDevice
  rust: hpet: decode HPET registers into enums
  rust: pl011: pass around registers::Data
  rust: pl011: switch to safe chardev operation
  rust: pl011: clean up visibilities of callbacks
  rust: pl011: move register definitions out of lib.rs
  rust: chardev: provide basic bindings to character devices
  rust: bindings: remove more unnecessary Send/Sync impls
  rust: chardev: wrap Chardev with Opaque<>
  rust: memory: wrap MemoryRegion with Opaque<>
  rust: sysbus: wrap SysBusDevice with Opaque<>
  rust: hpet: do not access fields of SysBusDevice
  rust: qdev: wrap Clock and DeviceState with Opaque<>
  rust: qom: wrap Object with Opaque<>
  rust: irq: wrap IRQState with Opaque<>
  rust: timer: wrap QEMUTimer with Opaque<> and express pinning requirements
  rust: hpet: embed Timer without the Option and Box indirection
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-03-10 13:40:05 +08:00
Stefan Hajnoczi
e88a579392 * Bug fixes and some small improvements for functional tests
* Improve performance of s390x PCI passthrough devices with relaxed translation
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Merge tag 'pull-request-2025-03-07' of https://gitlab.com/thuth/qemu into staging

* Bug fixes and some small improvements for functional tests
* Improve performance of s390x PCI passthrough devices with relaxed translation

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# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2025-03-07' of https://gitlab.com/thuth/qemu:
  s390x/pci: indicate QEMU supports relaxed translation for passthrough
  s390x/pci: add support for guests that request direct mapping
  MAINTAINERS: Add docs/devel/testing/functional.rst to the functional section
  doc: add missing 'Asset' type in function test doc
  tests/functional/test_virtio_balloon: Only use KVM for running this test
  tests/functional: fix race in virtio balloon test
  tests/functional: Increase the timeout of the mips64el_replay test
  tests/functional/test_mips_malta: Add a network test via the pcnet NIC
  tests/functional: Move the code for testing HTTP downloads to a common function
  tests/functional: stop output from zstd command when uncompressing
  tests/functional: drop unused 'get_tag' method
  tests/functional: skip memaddr tests on 32-bit builds
  tests/functional: reduce tuxrun maxmem to work on 32-bit hosts
  tests/functional: set 'qemu_bin' as an object level field
  tests/functional: remove unused 'bin_prefix' variable

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-03-08 11:31:26 +08:00
Aditya Gupta
e7f091d0c1 doc: add missing 'Asset' type in function test doc
Seems 'Asset' got missed in the documentation by mistake.

Also fix the one spellcheck issue pointed by spellcheck

Signed-off-by: Aditya Gupta <adityag@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250306060706.1982992-1-adityag@linux.ibm.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2025-03-07 09:24:00 +01:00
Stefan Hajnoczi
2400fad572 vfio queue:
* Added property documentation
 * Added Minor fixes
 * Implemented basic PCI PM capability backing
 * Promoted new IGD maintainer
 * Deprecated vfio-plaform
 * Extended VFIO migration with multifd support
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Merge tag 'pull-vfio-20250306' of https://github.com/legoater/qemu into staging

vfio queue:

* Added property documentation
* Added Minor fixes
* Implemented basic PCI PM capability backing
* Promoted new IGD maintainer
* Deprecated vfio-plaform
* Extended VFIO migration with multifd support

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# gpg: Good signature from "Cédric Le Goater <clg@redhat.com>" [full]
# gpg:                 aka "Cédric Le Goater <clg@kaod.org>" [full]
# Primary key fingerprint: A0F6 6548 F048 95EB FE6B  0B60 51A3 43C7 CFFB ECA1

* tag 'pull-vfio-20250306' of https://github.com/legoater/qemu: (42 commits)
  hw/core/machine: Add compat for x-migration-multifd-transfer VFIO property
  vfio/migration: Make x-migration-multifd-transfer VFIO property mutable
  vfio/migration: Add x-migration-multifd-transfer VFIO property
  vfio/migration: Multifd device state transfer support - send side
  vfio/migration: Multifd device state transfer support - config loading support
  migration/qemu-file: Define g_autoptr() cleanup function for QEMUFile
  vfio/migration: Multifd device state transfer support - load thread
  vfio/migration: Multifd device state transfer support - received buffers queuing
  vfio/migration: Setup and cleanup multifd transfer in these general methods
  vfio/migration: Multifd setup/cleanup functions and associated VFIOMultifd
  vfio/migration: Multifd device state transfer - add support checking function
  vfio/migration: Multifd device state transfer support - basic types
  vfio/migration: Move migration channel flags to vfio-common.h header file
  vfio/migration: Add vfio_add_bytes_transferred()
  vfio/migration: Convert bytes_transferred counter to atomic
  vfio/migration: Add load_device_config_state_start trace event
  migration: Add save_live_complete_precopy_thread handler
  migration/multifd: Add multifd_device_state_supported()
  migration/multifd: Make MultiFDSendData a struct
  migration/multifd: Device state transfer support - send side
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-03-07 07:39:21 +08:00
Paolo Bonzini
f07a5674cf rust: qemu_api_macros: add Wrapper derive macro
Add a derive macro that makes it easy to peel off all the layers of
specialness (UnsafeCell, MaybeUninit, etc.) and just get a pointer
to the wrapped type; and likewise add them back starting from a
*mut.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-03-06 12:44:46 +01:00
Paolo Bonzini
0b9d05e3c9 rust: cell: add wrapper for FFI types
Inspired by the same-named type in Linux.  This type provides the compiler
with a correct view of what goes on with FFI types.  In addition, it
separates the glue code from the bindgen-generated code, allowing
traits such as Send, Sync or Zeroable to be specified independently
for C and Rust structs.

Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-03-06 12:44:46 +01:00
Markus Armbruster
71ba2613ad docs/devel/qapi-code-gen: Discourage use of 'prefix'
QAPI's 'prefix' feature can make the connection between enumeration
type and its constants less than obvious.  It's best used with
restraint.  Commit 7bbadc60b5..64f5e9db77 eliminated most uses.
Discourage new ones.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20250228134335.132278-1-armbru@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
2025-03-06 10:33:05 +01:00
Daniel P. Berrangé
8188356a26 tests/functional: set 'qemu_bin' as an object level field
The 'qemu_bin' field is currently set on the class, despite being
accessed as if it were an object instance field with 'self.qemu_bin'.

This is no obvious need to have it as a class field, so move it into
the object instance.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20250228102738.3064045-3-berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2025-03-06 08:10:04 +01:00
Maciej S. Szmigiero
623af41dd3 vfio/migration: Add x-migration-multifd-transfer VFIO property
This property allows configuring whether to transfer the particular device
state via multifd channels when live migrating that device.

It defaults to AUTO, which means that VFIO device state transfer via
multifd channels is attempted in configurations that otherwise support it.

Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/d6dbb326e3d53c7104d62c96c9e3dd64e1c7b940.1741124640.git.maciej.szmigiero@oracle.com
[ clg: Added documentation ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2025-03-06 06:47:34 +01:00
Maciej S. Szmigiero
6d644baef2 vfio/migration: Multifd device state transfer support - send side
Implement the multifd device state transfer via additional per-device
thread inside save_live_complete_precopy_thread handler.

Switch between doing the data transfer in the new handler and doing it
in the old save_state handler depending if VFIO multifd transfer is enabled
or not.

Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/4d727e2e0435e0022d50004e474077632830e08d.1741124640.git.maciej.szmigiero@oracle.com
[ clg: - Reordered savevm_vfio_handlers
       - Updated save_live_complete_precopy* documentation ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2025-03-06 06:47:34 +01:00
Maciej S. Szmigiero
c59748c1ff vfio/migration: Multifd device state transfer support - load thread
Add a thread which loads the VFIO device state buffers that were received
via multifd.

Each VFIO device that has multifd device state transfer enabled has one
such thread, which is created using migration core API
qemu_loadvm_start_load_thread().

Since it's important to finish loading device state transferred via the
main migration channel (via save_live_iterate SaveVMHandler) before
starting loading the data asynchronously transferred via multifd the thread
doing the actual loading of the multifd transferred data is only started
from switchover_start SaveVMHandler.

switchover_start handler is called when MIG_CMD_SWITCHOVER_START
sub-command of QEMU_VM_COMMAND is received via the main migration channel.

This sub-command is only sent after all save_live_iterate data have already
been posted so it is safe to commence loading of the multifd-transferred
device state upon receiving it - loading of save_live_iterate data happens
synchronously in the main migration thread (much like the processing of
MIG_CMD_SWITCHOVER_START) so by the time MIG_CMD_SWITCHOVER_START is
processed all the proceeding data must have already been loaded.

Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/9abe612d775aaf42e31646796acd2363c723a57a.1741124640.git.maciej.szmigiero@oracle.com
[ clg: - Reordered savevm_vfio_handlers
       - Added switchover_start documentation ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2025-03-06 06:47:34 +01:00
Maciej S. Szmigiero
3228d311ab vfio/migration: Multifd device state transfer support - received buffers queuing
The multifd received data needs to be reassembled since device state
packets sent via different multifd channels can arrive out-of-order.

Therefore, each VFIO device state packet carries a header indicating its
position in the stream.
The raw device state data is saved into a VFIOStateBuffer for later
in-order loading into the device.

The last such VFIO device state packet should have
VFIO_DEVICE_STATE_CONFIG_STATE flag set and carry the device config state.

Signed-off-by: Maciej S. Szmigiero <maciej.szmigiero@oracle.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/e3bff515a8d61c582b94b409eb12a45b1a143a69.1741124640.git.maciej.szmigiero@oracle.com
[ clg: - Reordered savevm_vfio_handlers
       - Added load_state_buffer documentation ]
Signed-off-by: Cédric Le Goater <clg@redhat.com>
2025-03-06 06:47:34 +01:00
Gerd Hoffmann
2bc10b15de docs: add uefi variable service documentation
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Message-ID: <20250225163031.1409078-25-kraxel@redhat.com>
2025-03-04 12:07:05 +01:00
Paolo Bonzini
29b9a66f91 docs: rust: update description of crates
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-25 16:18:11 +01:00
Paolo Bonzini
7a2e40866c docs: rust: fix typos
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-25 16:18:11 +01:00
Paolo Bonzini
8a420dd109 rust: add module to convert between success/-errno and io::Result
It is a common convention in QEMU to return a positive value in case of
success, and a negated errno value in case of error.  Unfortunately,
using errno portably in Rust is a bit complicated; on Unix the errno
values are supported natively by io::Error, but on Windows they are not;
so, use the libc crate.

This is a set of utility functions that are used by both chardev and
block layer bindings.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-25 16:18:08 +01:00
Stefan Hajnoczi
b69801dd6b virtio,pc,pci: features, fixes, cleanups
Features:
 
 SR-IOV emulation for pci
 virtio-mem-pci support for s390
 interleave support for cxl
 big endian support for vdpa svq
 new QAPI events for vhost-user
 
 Also vIOMMU reset order fixups are in.
 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, cleanups

Features:

SR-IOV emulation for pci
virtio-mem-pci support for s390
interleave support for cxl
big endian support for vdpa svq
new QAPI events for vhost-user

Also vIOMMU reset order fixups are in.
Fixes, cleanups all over the place.

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

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* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (41 commits)
  docs/devel/reset: Document reset expectations for DMA and IOMMU
  hw/vfio/common: Add a trace point in vfio_reset_handler
  hw/arm/smmuv3: Move reset to exit phase
  hw/i386/intel-iommu: Migrate to 3-phase reset
  hw/virtio/virtio-iommu: Migrate to 3-phase reset
  vhost-user-snd: correct the calculation of config_size
  net: vhost-user: add QAPI events to report connection state
  hw/virtio/virtio-nsm: Respond with correct length
  vdpa: Fix endian bugs in shadow virtqueue
  MAINTAINERS: add more files to `vhost`
  cryptodev/vhost: allocate CryptoDevBackendVhost using g_mem0()
  vhost-iova-tree: Update documentation
  vhost-iova-tree, svq: Implement GPA->IOVA & partial IOVA->HVA trees
  vhost-iova-tree: Implement an IOVA-only tree
  amd_iommu: Use correct bitmask to set capability BAR
  amd_iommu: Use correct DTE field for interrupt passthrough
  hw/virtio: reset virtio balloon stats on machine reset
  mem/cxl_type3: support 3, 6, 12 and 16 interleave ways
  hw/mem/cxl_type3: Ensure errp is set on realization failure
  hw/mem/cxl_type3: Fix special_ops memory leak on msix_init_exclusive_bar() failure
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-02-22 05:06:39 +08:00
Eric Auger
dd6d545e8f docs/devel/reset: Document reset expectations for DMA and IOMMU
To avoid any translation faults, the IOMMUs are expected to be
reset after the devices they protect. Document that we expect
DMA requests to be stopped during the 'enter' or 'hold' phase
while IOMMUs should be reset during the 'exit' phase.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20250218182737.76722-6-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2025-02-21 07:21:25 -05:00
Richard Henderson
6b8abd244b tcg: Introduce the 'z' constraint for a hardware zero register
For loongarch, mips, riscv and sparc, a zero register is
available all the time.  For aarch64, register index 31
depends on context: sometimes it is the stack pointer,
and sometimes it is the zero register.

Introduce a new general-purpose constraint which maps 0
to TCG_REG_ZERO, if defined.  This differs from existing
constant constraints in that const_arg[*] is recorded as
false, indicating that the value is in a register.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-18 08:29:03 -08:00
Richard Henderson
f441b4d19b tcg: Remove TCG_OVERSIZED_GUEST
This is now prohibited in configuration.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-02-18 07:33:42 -08:00
Zhao Liu
eadb83f9a3 rust: add bindings for timer
Add timer bindings to help handle idiomatic Rust callbacks.

Additionally, wrap QEMUClockType in ClockType binding to avoid unsafe
calls in device code.

Signed-off-by: Zhao Liu <zhao1.liu@intel.com>
Link: https://lore.kernel.org/r/20250210030051.2562726-7-zhao1.liu@intel.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-13 12:51:34 +01:00
Paolo Bonzini
590faa03ee rust: bindings for MemoryRegionOps
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-13 12:19:34 +01:00
Paolo Bonzini
df45e26a81 rust: docs: document naming convention
As agreed in the "vtables and procedural macros" thread on
the mailing list.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-13 12:19:33 +01:00
Stefan Hajnoczi
54e91d1523 QAPI patches patches for 2025-02-10
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Merge tag 'pull-qapi-2025-02-10-v2' of https://repo.or.cz/qemu/armbru into staging

QAPI patches patches for 2025-02-10

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# gpg: Signature made Mon 10 Feb 2025 09:47:13 EST
# gpg:                using RSA key 354BC8B3D7EB2A6B68674E5F3870B400EB918653
# gpg:                issuer "armbru@redhat.com"
# gpg: Good signature from "Markus Armbruster <armbru@redhat.com>" [full]
# gpg:                 aka "Markus Armbruster <armbru@pond.sub.org>" [full]
# Primary key fingerprint: 354B C8B3 D7EB 2A6B 6867  4E5F 3870 B400 EB91 8653

* tag 'pull-qapi-2025-02-10-v2' of https://repo.or.cz/qemu/armbru:
  qapi: expose all schema features to code
  qapi: rename 'special_features' to 'features'
  qapi: change 'unsigned special_features' to 'uint64_t features'
  qapi: cope with feature names containing a '-'
  qapi/ui: Fix documentation of upper bound value in InputMoveEvent
  qapi: fix colon in Since tag section
  qapi: Move and rename qapi/qmp/dispatch.h to qapi/qmp-registry.h
  qapi: Move include/qapi/qmp/ to include/qobject/

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-02-10 10:47:31 -05:00
Daniel P. Berrangé
153b0989d8 qapi: Move and rename qapi/qmp/dispatch.h to qapi/qmp-registry.h
The general expectation is that header files should follow the same
file/path naming scheme as the corresponding source file. There are
various historical exceptions to this practice in QEMU, with one of
the most notable being the include/qapi/qmp/ directory.

include/qapi/qmp/dispatch.h corresponds mostly to qapi/qmp-registry.c.
Move and rename it to include/qapi/qmp-registry.h.

Now just qerror.h is left in include/qapi/qmp/.  Since it's deprecated
& (slowly) getting eliminated anyway, it isn't worth moving.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20241118151235.2665921-3-armbru@redhat.com>
2025-02-10 15:33:29 +01:00
Daniel P. Berrangé
407bc4bf90 qapi: Move include/qapi/qmp/ to include/qobject/
The general expectation is that header files should follow the same
file/path naming scheme as the corresponding source file. There are
various historical exceptions to this practice in QEMU, with one of
the most notable being the include/qapi/qmp/ directory. Most of the
headers there correspond to source files in qobject/.

This patch corrects most of that inconsistency by creating
include/qobject/ and moving the headers for qobject/ there.

This also fixes MAINTAINERS for include/qapi/qmp/dispatch.h:
scripts/get_maintainer.pl now reports "QAPI" instead of "No
maintainers found".

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Acked-by: Halil Pasic <pasic@linux.ibm.com> #s390x
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-ID: <20241118151235.2665921-2-armbru@redhat.com>
[Rebased]
2025-02-10 15:33:16 +01:00
Paolo Bonzini
2590c02a5f rust: add docs
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2025-02-07 15:50:59 +01:00
Stefan Hajnoczi
e60938852f * Convert more avocado tests to the functional framework
* Fix the broken aarch64_tcg_plugins test
 * Add test for 64-bit mac99 machine
 * Add a Linux-based test for the 40p machine
 * Fix issues with record/replay of some s390x instructions
 * Fix node.js crashes on emulated s390x due to a bug in the MVC instruction
 * Enable virtio-balloon-pci and virtio-mem-pci on s390x
 * Fix a libslirp v4.9.0 compilation problem
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Merge tag 'pull-request-2025-01-30' of https://gitlab.com/thuth/qemu into staging

* Convert more avocado tests to the functional framework
* Fix the broken aarch64_tcg_plugins test
* Add test for 64-bit mac99 machine
* Add a Linux-based test for the 40p machine
* Fix issues with record/replay of some s390x instructions
* Fix node.js crashes on emulated s390x due to a bug in the MVC instruction
* Enable virtio-balloon-pci and virtio-mem-pci on s390x
* Fix a libslirp v4.9.0 compilation problem

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# gpg: Signature made Thu 30 Jan 2025 08:13:38 EST
# gpg:                using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg:                issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg:                 aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg:                 aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg:                 aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3  EAB9 2ED9 D774 FE70 2DB5

* tag 'pull-request-2025-01-30' of https://gitlab.com/thuth/qemu:
  net/slirp: libslirp 4.9.0 compatibility
  tests/functional/test_mips_malta: Convert the mips big endian replay tests
  tests/functional/test_mips64el_malta: Convert the mips64el replay tests
  tests/functional/test_mipsel_malta: Convert the mipsel replay tests
  tests/functional: Add the ReplayKernelBase class
  tests/functional: Add a decorator for skipping long running tests
  tests/functional: Extend PPC 40p test with Linux boot
  s390x/s390-virtio-ccw: Support plugging PCI-based virtio memory devices
  virtio-mem-pci: Allow setting nvectors, so we can use MSI-X
  virtio-balloon-pci: Allow setting nvectors, so we can use MSI-X
  hw/s390x/s390-virtio-ccw: Fix a record/replay deadlock
  tests/tcg/s390x: Test modifying code using the MVC instruction
  target/s390x: Fix MVC not always invalidating translation blocks
  target/s390x: Fix PPNO execution with icount
  tests/functional/test_mips_malta: Fix comment about endianness of the test
  tests/functional: Add a ppc64 mac99 test
  tests/functional: Fix the aarch64_tcg_plugins test
  tests/functional: Convert the migration avocado test
  tests/functional: Fix broken decorators with lamda functions
  tests/functional/qemu_test/decorators: Fix bad check for imports

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-01-30 10:29:40 -05:00
Thomas Huth
4ae633b012 tests/functional: Add a decorator for skipping long running tests
Some tests have a very long runtime and might run into timeout issues
e.g. when QEMU has been compiled with --enable-debug. Add a decorator
for marking them more easily. Rename the corresponding environment
variable to be more in sync with the other QEMU_TEST_ALLOW_* switches
that we already have, and add a paragraph about it in the documentation.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <20250128152839.184599-2-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2025-01-30 10:50:56 +01:00
Steve Sistare
45c3d6cfbb migration: cpr-transfer documentation
Add documentation for the cpr-transfer migration mode.

Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Link: https://lore.kernel.org/r/1736967650-129648-25-git-send-email-steven.sistare@oracle.com
[add -machine memory-backend=ram0]
Signed-off-by: Fabiano Rosas <farosas@suse.de>
2025-01-29 11:56:39 -03:00
Stefan Hajnoczi
32a97c5d05 tcg:
- Add TCGOP_TYPE, TCGOP_FLAGS.
   - Pass type and flags to tcg_op_supported, tcg_target_op_def.
   - Split out tcg-target-has.h and unexport from tcg.h.
   - Reorg constraint processing; constify TCGOpDef.
   - Make extract, sextract, deposit opcodes mandatory.
   - Merge ext{8,16,32}{s,u} opcodes into {s}extract.
 tcg/mips: Expand bswap unconditionally
 tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64
 tcg/riscv: Use BEXTI for single-bit extractions
 tcg/sparc64: Use SRA, SRL for {s}extract_i64
 
 disas/riscv: Guard dec->cfg dereference for host disassemble
 util/cpuinfo-riscv: Detect Zbs
 accel/tcg: Call tcg_tb_insert() for one-insn TBs
 linux-user: Add missing /proc/cpuinfo fields for sparc
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Merge tag 'pull-tcg-20250117' of https://gitlab.com/rth7680/qemu into staging

tcg:
  - Add TCGOP_TYPE, TCGOP_FLAGS.
  - Pass type and flags to tcg_op_supported, tcg_target_op_def.
  - Split out tcg-target-has.h and unexport from tcg.h.
  - Reorg constraint processing; constify TCGOpDef.
  - Make extract, sextract, deposit opcodes mandatory.
  - Merge ext{8,16,32}{s,u} opcodes into {s}extract.
tcg/mips: Expand bswap unconditionally
tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64
tcg/riscv: Use BEXTI for single-bit extractions
tcg/sparc64: Use SRA, SRL for {s}extract_i64

disas/riscv: Guard dec->cfg dereference for host disassemble
util/cpuinfo-riscv: Detect Zbs
accel/tcg: Call tcg_tb_insert() for one-insn TBs
linux-user: Add missing /proc/cpuinfo fields for sparc

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# gpg: Signature made Fri 17 Jan 2025 13:19:33 EST
# 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-tcg-20250117' of https://gitlab.com/rth7680/qemu: (68 commits)
  softfloat: Constify helpers returning float_status field
  accel/tcg: Call tcg_tb_insert() for one-insn TBs
  tcg: Document tb_lookup() and tcg_tb_lookup()
  linux-user: Add missing /proc/cpuinfo fields for sparc
  tcg/riscv: Use BEXTI for single-bit extractions
  util/cpuinfo-riscv: Detect Zbs
  tcg: Remove TCG_TARGET_HAS_deposit_{i32,i64}
  tcg: Remove TCG_TARGET_HAS_{s}extract_{i32,i64}
  tcg/tci: Remove assertions for deposit and extract
  tcg/tci: Provide TCG_TARGET_{s}extract_valid
  tcg/sparc64: Use SRA, SRL for {s}extract_i64
  tcg/s390x: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/riscv: Use SRAIW, SRLIW for {s}extract_i64
  tcg/riscv64: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/ppc: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/mips: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/loongarch64: Fold the ext{8,16,32}[us] cases into {s}extract
  tcg/arm: Add full [US]XT[BH] into {s}extract
  tcg/aarch64: Expand extract with offset 0 with andi
  tcg/aarch64: Provide TCG_TARGET_{s}extract_valid
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2025-01-21 08:28:33 -05:00
Pierrick Bouvier
a4340e7c52 docs: add a glossary
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20241209183104.365796-7-pierrick.bouvier@linaro.org>
[AJB: update MAINTAINERS]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-37-alex.bennee@linaro.org>
2025-01-17 10:45:54 +00:00
Pierrick Bouvier
7f6314427e docs/devel: add a codebase section
Present the various parts of QEMU and organization of codebase.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20241209183104.365796-6-pierrick.bouvier@linaro.org>
[AJB: tweak commit summary, update MAINTAINERS]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-36-alex.bennee@linaro.org>
2025-01-17 10:45:49 +00:00
Pierrick Bouvier
75dbfbad68 docs/devel: add information on how to setup build environments
MacOS and Linux are straightforward, but Windows needs a bit more
details.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20241209183104.365796-5-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-35-alex.bennee@linaro.org>
2025-01-17 10:45:44 +00:00
Pierrick Bouvier
ca494c9be4 docs/devel: add b4 for patch retrieval
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20241209183104.365796-4-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-34-alex.bennee@linaro.org>
2025-01-17 10:45:41 +00:00
Pierrick Bouvier
f4ac443efd docs/devel: add git-publish for patch submitting
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-Id: <20241209183104.365796-3-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-33-alex.bennee@linaro.org>
2025-01-17 10:45:38 +00:00
Pierrick Bouvier
ecbf3567e2 docs/devel/style: add a section about bitfield, and disallow them for packed structures
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Tested-by: Stefan Weil <sw@weilnetz.de>
Tested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20250110203401.178532-3-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20250116160306.1709518-25-alex.bennee@linaro.org>
2025-01-17 10:45:27 +00:00
Richard Henderson
4d87221839 tcg: Replace TCGOP_VECL with TCGOP_TYPE
In the replacement, drop the TCGType - TCG_TYPE_V64 adjustment,
except for the call to tcg_out_vec_op.  Pass type to tcg_gen_op[1-6],
so that all integer opcodes gain the type.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2025-01-16 20:57:16 -08:00
Pierrick Bouvier
6a4fa294eb docs/devel: remove dead video link for sourcehut submit process
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2024-12-28 14:42:52 +03:00
Richard Henderson
5fcabe628b include/hw/qdev-properties: Remove DEFINE_PROP_END_OF_LIST
Now that all of the Property arrays are counted, we can remove
the terminator object from each array.  Update the assertions
in device_class_set_props to match.

With struct Property being 88 bytes, this was a rather large
form of terminator.  Saves 30k from qemu-system-aarch64.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Lei Yang <leiyang@redhat.com>
Link: https://lore.kernel.org/r/20241218134251.4724-21-richard.henderson@linaro.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2024-12-19 19:36:37 +01:00
Richard Henderson
fd363a14f6 docs: Constify all Property in examples
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2024-12-15 12:56:51 -06:00
Thomas Huth
4a722d2e8e docs/devel/testing/functional: Clarify that we have to use the build folder
Make it clear that the commands have to be run from the folder with the
build, and use the python3 from our pyvenv to make sure that the
pycotap module is available.

Message-ID: <20241112115302.470527-1-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2024-11-27 07:43:14 +01:00
Daniel P. Berrangé
270c81b7d5 docs: explicitly permit a "commonly known identity" with SoB
The docs for submitting a patch describe using your "Real Name" with
the Signed-off-by line. Although somewhat ambiguous, this has often
been interpreted to mean someone's legal name.

In recent times, there's been a general push back[1] against the notion
that use of Signed-off-by in a project automatically requires / implies
the use of legal ("real") names and greater awareness of the downsides.

Full discussion of the problems of such policies is beyond the scope of
this commit message, but at a high level they are liable to marginalize,
disadvantage, and potentially result in harm, to contributors.

TL;DR: there are compelling reasons for a person to choose distinct
identities in different contexts & a decision to override that choice
should not be taken lightly.

A number of key projects have responded to the issues raised by making
it clear that a contributor is free to determine the identity used in
SoB lines:

 * Linux has clarified[2] that they merely expect use of the
   contributor's "known identity", removing the previous explicit
   rejection of pseudonyms.

 * CNCF has clarified[3] that the real name is simply the identity
   the contributor chooses to use in the context of the community
   and does not have to be a legal name, nor birth name, nor appear
   on any government ID.

Since we have no intention of ever routinely checking any form of ID
documents for contributors[4], realistically we have no way of knowing
anything about the name they are using, except through chance, or
through the contributor volunteering the information. IOW, we almost
certainly already have people using pseudonyms for contributions.

This proposes to accept that reality and eliminate unnecessary friction,
by following Linux & the CNCF in merely asking that a contributors'
commonly known identity, of their choosing, be used with the SoB line.

[1] Raised in many contexts at many times, but a decent overall summary
    can be read at https://drewdevault.com/2023/10/31/On-real-names.html
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d4563201f33a022fc0353033d9dfeb1606a88330
[3] 659fd32c86/dco-guidelines.md
[4] Excluding the rare GPG key signing parties for regular maintainers

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20241021190939.1482466-1-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241121165806.476008-40-alex.bennee@linaro.org>
2024-11-25 10:27:47 +00:00
Daniel P. Berrangé
1a8755a51e tests/functional: add a QMP backdoor for debugging stalled tests
Support the QEMU_TEST_QMP_BACKDOOR=backdoor.sock env variable as a
way to get a QMP backdoor for debugging a stalled QEMU test. Most
typically this would be used if running the tests directly:

 $ QEMU_TEST_QMP_BACKDOOR=backdoor.sock \
   QEMU_TEST_QEMU_BINARY=./build/qemu-system-arm \
   PYTHONPATH=./python \
   ./tests/functional/test_arm_tuxrun.py

And then, when the test stalls, in a second shell run:

 $ ./scripts/qmp/qmp-shell backdoor.sock

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20241121154218.1423005-18-berrange@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241121165806.476008-18-alex.bennee@linaro.org>
2024-11-25 10:13:41 +00:00
Daniel P. Berrangé
dbaaef7dbf tests/functional: automatically clean up scratch files after tests
The build/tests/functional subdirectories are consuming huge amounts
of disk space.

Split the location for scratch files into a 'scratch' sub-directory,
separate from log files, and delete it upon completion of each test.
The new env variable QEMU_TEST_KEEP_SCRATCH can be set to preserve
this scratch dir for debugging access if required.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20241121154218.1423005-3-berrange@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241121165806.476008-3-alex.bennee@linaro.org>
2024-11-25 10:06:20 +00:00
Peter Maydell
361dfa9757 docs/devel/reset: Fix minor grammatical error
Fix a minor grammatical error in the reset documentation:
a couple of missing words and a singular/plural swap.

Signed-off-by: Axel Heider <axel.heider@codasip.com>
Message-id: 173006362760.28451.11319467059840843945-1@git.sr.ht
[PMM: squashed two patches into one, tweaked commit message]
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2024-10-29 15:04:47 +00:00
Pierrick Bouvier
dfbc72a77c docs/devel: update tsan build documentation
Mention it's now possible to build with gcc, instead of clang, and
explain how to build a sanitized glib version.

Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20240910174013.1433331-4-pierrick.bouvier@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20241023113406.1284676-6-alex.bennee@linaro.org>
2024-10-24 09:56:12 +01:00
Peter Maydell
0ae50e8e1e docs/devel/lockcnt: Include kernel-doc API documentation
Pull in the kernel-doc API documentation into the lockcnt docs.
This requires us to fix one rST markup syntax error in the
header file comments.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240816132212.3602106-8-peter.maydell@linaro.org
2024-10-15 15:16:17 +01:00
Peter Maydell
51483f6c84 include: Move QemuLockCnt APIs to their own header
Currently the QemuLockCnt data structure and associated functions are
in the include/qemu/thread.h header.  Move them to their own
qemu/lockcnt.h.  The main reason for doing this is that it means we
can autogenerate the documentation comments into the docs/devel
documentation.

The copyright/author in the new header is drawn from lockcnt.c,
since the header changes were added in the same commit as
lockcnt.c; since neither thread.h nor lockcnt.c state an explicit
license, the standard default of GPL-2-or-later applies.

We include the new header (and the .c file, which was accidentally
omitted previously) in the "RCU" part of MAINTAINERS, since that
is where the lockcnt.rst documentation is categorized.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Message-id: 20240816132212.3602106-7-peter.maydell@linaro.org
2024-10-15 15:16:17 +01:00
Peter Maydell
90655d815a docs/devel/rcu: Convert to rST format
Convert docs/devel/rcu.txt to rST format.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240816132212.3602106-6-peter.maydell@linaro.org
2024-10-15 15:16:17 +01:00