Add a user-mode emulation version of the function. More will be
added later, for now it is just process_queued_cpu_work.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Do so before extending it to the user-mode emulators, where there is no
such thing as an "I/O thread".
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
CPU threads write exit_request as a "note to self" that they need to
go out to a slow path. This write happens out of the BQL and can be
a data race with another threads' cpu_exit(); use atomic accesses
consistently.
While at it, change the source argument from int ("1") to bool ("true").
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Writes to interrupt_request used non-atomic accesses, but there are a
few cases where the access was not protected by the BQL. Now that
there is a full set of helpers, it's easier to guarantee that
interrupt_request accesses are fully atomic, so just drop the
requirement instead of fixing them.
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Many small improvements to various functional tests
* Remove remainders from storing avocado artifacts in the Gitlab CI
* Keep more meson log files as artifacts in the Gitlab CI instead
* Re-enable -fzero-call-used-regs on OpenBSD
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Merge tag 'pull-request-2025-09-09' of https://gitlab.com/thuth/qemu into staging
* Silence warnings from the undefined-behaviour sanitizer
* Many small improvements to various functional tests
* Remove remainders from storing avocado artifacts in the Gitlab CI
* Keep more meson log files as artifacts in the Gitlab CI instead
* Re-enable -fzero-call-used-regs on OpenBSD
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# gpg: Signature made Tue 09 Sep 2025 14:50:38 BST
# 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>" [undefined]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* tag 'pull-request-2025-09-09' of https://gitlab.com/thuth/qemu: (23 commits)
tests/functional: purge scratch dir on test startup
tests/functional: avoid tearDown failure when QEMU dies
tests/functional: avoid duplicate messages on failures
tests/functional: fix infinite loop on console EOF
tests/functional: add vm param to cmd.py helpers
tests/functional: return output from cmd.py helpers
gitlab: prevent duplicated meson log artifacts in test jobs
gitlab: include all junit XML files from meson
gitlab: always include entire of meson-logs directory
gitlab: replace avocado results files with meson results files
tests/functional/arm: Update test ASPEED SDK v09.07 for AST2700 vbootrom
tests/functional/arm: Update test ASPEED SDK v09.07 for AST2600
tests/functional/arm: Update test ASPEED SDK v09.07 for AST2500
tests/functional/arm: Update test ASPEED SDK v03.02 for AST1030
tests/functional: handle URLError when fetching assets
tests/functional: fix formatting of exception args
tests/functional: enable force refresh of cached assets
tests/functional/m68k: Avoid ResourceWarning in the nextcube test
ui/vnc: Fix crash when specifying [vnc] without id in the config file
system/physmem: Silence warning from ubsan
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The definitions from console.h are not needed in the bcm2835_fb.h
header file yet, so let's move it to the place that really needs
its definitions, i.e. into the bcm2835_fb.c file.
This way the header can also be used by code that is not compiled
with the CFLAGS that are required for pixman or OpenGL (in case
their headers do not reside under /usr/include).
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250508144120.163009-3-thuth@redhat.com>
Now that nothing accesses the bcontainer field directly, rename bcontainer to
parent_obj as per our current coding guidelines.
Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20250715093110.107317-8-mark.caveayland@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Update the VFIOContainer declaration so that it is closer to our coding
guidelines: emove the explicit typedef (this is already handled by the
OBJECT_DECLARE_TYPE() macro) and add a blank line after the parent object.
Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Link: https://lore.kernel.org/qemu-devel/20250715093110.107317-3-mark.caveayland@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Update the VFIOContainerBase declaration to match our current coding
guidelines: remove the explicit typedef (this is already handled by the
OBJECT_DECLARE_TYPE() macro), add a blank line after the parent object,
rename parent to parent_obj, and move the macro declaration next to the
VFIOContainerBase struct declaration.
Signed-off-by: Mark Cave-Ayland <mark.caveayland@nutanix.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250715093110.107317-2-mark.caveayland@nutanix.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Since the removal of vfio-platform, header file vfio-region.h no
longer needs to be a public VFIO interface. Move it under hw/vfio.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250901064631.530723-9-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The VFIO_PLATFORM device type has been deprecated in the QEMU 10.0
timeframe. All dependent devices have been removed. Now remove the
core vfio platform framework.
Rename VFIO_DEVICE_TYPE_PLATFORM enum to VFIO_DEVICE_TYPE_UNUSED to
maintain the same index for the CCW and AP VFIO device types.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250901064631.530723-8-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The VFIO_XGMAC device type has been deprecated in the QEMU 10.0
timeframe. Remove it.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250901064631.530723-7-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The VFIO_AMD_XGBE device type has been deprecated in the QEMU 10.0
timeframe. The AMD "Seattle" device is not supported anymore. Remove it.
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Link: https://lore.kernel.org/qemu-devel/20250901064631.530723-6-clg@redhat.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The qemu_init_irq() function initializes a TYPE_IRQ QOM object. The
caller is therefore responsible for eventually calling
qemu_free_irq() to unref (and thus free) it.
In many places where we want to initialize an IRQ we are in
the init/realize of some other QOM object; if we have a variant
of this function that calls object_initialize_child() then the
IRQ will be automatically cleaned up when its parent object is
destroyed, and we don't need to remember to manually free it.
Implement qemu_init_irq_child(), which is to qemu_init_irq()
what object_initialize_child() is to object_initialize().
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20250821154053.2417090-2-peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
A SPI transaction consists of shifting bit in sync with the CLK
line, writing on the MOSI (output) line / and reading MISO (input)
line.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Gustavo Romero <gustavo.romero@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Support for spec v1.10 was deprecated in QEMU v9.1.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20240627071040.36190-4-philmd@linaro.org>
* cpu-exec, accel: remove BQL usage for interrupt_request != 0
* memory, hpet, pmtimer: introduce BQL-free PIO/MMIO
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* hw/i386: split isapc from PCI boards
* cpu-exec, accel: remove BQL usage for interrupt_request != 0
* memory, hpet, pmtimer: introduce BQL-free PIO/MMIO
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# gpg: Signature made Fri 29 Aug 2025 09:03:10 PM AEST
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [unknown]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [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: 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: (28 commits)
tcg: move interrupt caching and single step masking closer to user
kvm: i386: irqchip: take BQL only if there is an interrupt
hpet: make main counter read lock-less
hpet: move out main counter read into a separate block
hpet: switch to fine-grained device locking
acpi: mark PMTIMER as unlocked
memory: reintroduce BQL-free fine-grained PIO/MMIO
add cpu_test_interrupt()/cpu_set_interrupt() helpers and use them tree wide
user-exec: ensure interrupt_request is not used
hw/i386/isapc.c: replace rom_memory with system_memory
hw/i386/pc_piix.c: replace rom_memory with pci_memory
hw/i386/pc_piix.c: remove unused headers after isapc machine split
hw/i386: move isapc machine to separate isapc.c file
hw/i386/pc_piix.c: assume pcmc->pci_enabled is always true in pc_init1()
hw/i386/pc_piix.c: always initialise ISA IDE drives in pc_init_isa()
hw/i386/pc_piix.c: remove pc_system_flash_cleanup_unused() from pc_init_isa()
hw/i386/pc_piix.c: hardcode hole64_size to 0 in pc_init_isa()
hw/i386/pc_piix.c: simplify RAM size logic in pc_init_isa()
hw/i386/pc_piix.c: remove nvdimm initialisation from pc_init_isa()
hw/i386/pc_piix.c: remove SGX initialisation from pc_init_isa()
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In stm32f250_soc_initfn() we mostly use the standard pattern
for child objects of calling object_initialize_child(). However
for s->adc_irqs we call object_new() and then later qdev_realize(),
and we never unref the object on deinit. This causes a leak,
detected by ASAN on the device-introspect-test:
Indirect leak of 10 byte(s) in 1 object(s) allocated from:
#0 0x5b9fc4789de3 in malloc (/mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/qemu-system-arm+0x21f1de3) (BuildId: 267a2619a026ed91c78a07b1eb2ef15381538efe)
#1 0x740de3f28b09 in g_malloc (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x62b09) (BuildId: 1eb6131419edb83b2178b682829a6913cf682d75)
#2 0x740de3f3e4d8 in g_strdup (/lib/x86_64-linux-gnu/libglib-2.0.so.0+0x784d8) (BuildId: 1eb6131419edb83b2178b682829a6913cf682d75)
#3 0x5b9fc70159e1 in g_strdup_inline /usr/include/glib-2.0/glib/gstrfuncs.h:321:10
#4 0x5b9fc70159e1 in object_property_try_add /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:1276:18
#5 0x5b9fc7015f94 in object_property_add /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:1294:12
#6 0x5b9fc701b900 in object_add_link_prop /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:2021:10
#7 0x5b9fc701b3fc in object_property_add_link /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:2037:12
#8 0x5b9fc4c299fb in qdev_init_gpio_out_named /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../hw/core/gpio.c:90:9
#9 0x5b9fc4c29b26 in qdev_init_gpio_out /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../hw/core/gpio.c:101:5
#10 0x5b9fc4c0f77a in or_irq_init /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../hw/core/or-irq.c:70:5
#11 0x5b9fc70257e1 in object_init_with_type /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:428:9
#12 0x5b9fc700cd4b in object_initialize_with_type /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:570:5
#13 0x5b9fc700e66d in object_new_with_type /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:774:5
#14 0x5b9fc700e750 in object_new /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../qom/object.c:789:12
#15 0x5b9fc68b2162 in stm32f205_soc_initfn /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-asan/../../hw/arm/stm32f205_soc.c:69:26
Switch to using object_initialize_child() like all our
other child objects for this SoC object.
Cc: qemu-stable@nongnu.org
Fixes: b63041c8f6 ("STM32F205: Connect the ADC devices")
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250821154229.2417453-1-peter.maydell@linaro.org
Close a race condition that causes cpr-transfer to lose VFIO
interrupts on ARM.
CPR stops VCPUs but does not disable VFIO interrupts, which may continue
to arrive throughout the transition to new QEMU.
CPR calls kvm_irqchip_remove_irqfd_notifier_gsi in old QEMU to force
future interrupts to the producer eventfd, where they are preserved.
Old QEMU then destroys the old KVM instance. However, interrupts may
already be pending in KVM state. To preserve them, call ioctl
KVM_DEV_ARM_VGIC_SAVE_PENDING_TABLES to flush them to guest RAM, where
they will be picked up when the new KVM+VCPU instance is created.
Cc: qemu-stable@nongnu.org
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Message-id: 1754936384-278328-1-git-send-email-steven.sistare@oracle.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The helpers form load-acquire/store-release pair and ensure
that appropriate barriers are in place in case checks happen
outside of BQL.
Use them to replace open-coded checkers/setters across the code,
to make sure that barriers are not missed. Helpers also make code a
bit more readable.
Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Jason J. Herne <jjherne@linux.ibm.com>
Link: https://lore.kernel.org/r/20250821155603.2422553-1-imammedo@redhat.com
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
cpu_interrupt() is not called anymore except by ARM but even there
it is dead code; disentangling the various cpregs accessors from user-mode
emulation is a work in progress.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add 10.2 machine types for arm/i440fx/m68k/q35/s390x/spapr.
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20250805095616.1168905-1-cohuck@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
cpr-transfer may lose a VFIO interrupt because the KVM instance is
destroyed and recreated. If an interrupt arrives in the middle, it is
dropped. To fix, stop pending new interrupts during cpr save, and pick
up the pieces. In more detail:
Stop the VCPUs. Call kvm_irqchip_remove_irqfd_notifier_gsi --> KVM_IRQFD to
deassign the irqfd gsi that routes interrupts directly to the VCPU and KVM.
After this call, interrupts fall back to the kernel vfio_msihandler, which
writes to QEMU's kvm_interrupt eventfd. CPR already preserves that
eventfd. When the route is re-established in new QEMU, the kernel tests
the eventfd and injects an interrupt to KVM if necessary.
Deassign INTx in a similar manner. For both MSI and INTx, remove the
eventfd handler so old QEMU does not consume an event.
If an interrupt was already pended to KVM prior to the completion of
kvm_irqchip_remove_irqfd_notifier_gsi, it will be recovered by the
subsequent call to cpu_synchronize_all_states, which pulls KVM interrupt
state to userland prior to saving it in vmstate.
Signed-off-by: Steve Sistare <steven.sistare@oracle.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Link: https://lore.kernel.org/qemu-devel/1752689169-233452-3-git-send-email-steven.sistare@oracle.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
We provide to sdbus_do_command() a pointer to a buffer to be
filled with a varying number of bytes. By not providing the
buffer size, the callee can not check the buffer is big enough.
Pass the buffer size as argument to follow good practices.
sdbus_do_command() doesn't return any error, only the size filled
in the buffer. Convert the returned type to unsigned and remove
the few unreachable lines in callers.
This allow to check for possible overflow in sd_do_command().
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20250804133406.17456-4-philmd@linaro.org>
* Various bug fixes around lost interrupts particularly.
* Major group interrupt work, in particular around redistributing
interrupts. Upstream group support is not in a complete or usable
state as it is.
* Significant context push/pull improvements, particularly pool and
phys context handling was quite incomplete beyond trivial OPAL
case that pushes at boot.
* Improved tracing and checking for unimp and guest error situations.
* Various other missing feature support.
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Merge tag 'pull-ppc-20250721' of https://github.com/legoater/qemu into staging
ppc/xive queue:
* Various bug fixes around lost interrupts particularly.
* Major group interrupt work, in particular around redistributing
interrupts. Upstream group support is not in a complete or usable
state as it is.
* Significant context push/pull improvements, particularly pool and
phys context handling was quite incomplete beyond trivial OPAL
case that pushes at boot.
* Improved tracing and checking for unimp and guest error situations.
* Various other missing feature support.
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# gpg: Signature made Mon 21 Jul 2025 03:08:07 EDT
# gpg: using RSA key A0F66548F04895EBFE6B0B6051A343C7CFFBECA1
# 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-ppc-20250721' of https://github.com/legoater/qemu: (50 commits)
ppc/xive2: Enable lower level contexts on VP push
ppc/xive: Split need_resend into restore_nvp
ppc/xive2: Implement PHYS ring VP push TIMA op
ppc/xive2: Implement POOL LGS push TIMA op
ppc/xive2: Implement set_os_pending TIMA op
ppc/xive2: redistribute group interrupts on context push
ppc/xive2: Implement pool context push TIMA op
ppc/xive: Check TIMA operations validity
ppc/xive: Redistribute phys after pulling of pool context
ppc/xive2: Prevent pulling of pool context losing phys interrupt
ppc/xive2: implement NVP context save restore for POOL ring
ppc/xive: Assert group interrupts were redistributed
ppc/xive2: Avoid needless interrupt re-check on CPPR set
ppc/xive2: Consolidate presentation processing in context push
ppc/xive2: split tctx presentation processing from set CPPR
ppc/xive: Add xive_tctx_pipr_set() helper function
ppc/xive: tctx_accept only lower irq line if an interrupt was presented
ppc/xive: tctx signaling registers rework
ppc/xive: Split xive recompute from IPB function
ppc/xive: Fix high prio group interrupt being preempted by low prio VP
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
xive2 must take into account redistribution of group interrupts if
the VP directed priority exceeds the group interrupt priority after
this operation. The xive1 code is not group aware so implement this
for xive2.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-47-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Certain TIMA operations should only be performed when a ring is valid,
others when the ring is invalid, and they are considered undefined if
used incorrectly. Add checks for this condition.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-44-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
In preparation to implement POOL context push, add support for POOL
NVP context save/restore.
The NVP p bit is defined in the spec as follows:
If TRUE, the CPPR of a Pool VP in the NVP is updated during store of
the context with the CPPR of the Hard context it was running under.
It's not clear whether non-pool VPs always or never get CPPR updated.
Before this patch, OS contexts always save CPPR, so we will assume that
is the behaviour.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-41-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Have xive_tctx_notify() also set the new PIPR value and rename it to
xive_tctx_pipr_set(). This can replace the last xive_tctx_pipr_update()
caller because it does not need to update IPB (it already sets it).
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-36-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The tctx "signaling" registers (PIPR, CPPR, NSR) raise an interrupt on
the target CPU thread. The POOL and PHYS rings both raise hypervisor
interrupts, so they both share one set of signaling registers in the
PHYS ring. The PHYS NSR register contains a field that indicates which
ring has presented the interrupt being signaled to the CPU.
This sharing results in all the "alt_regs" throughout the code. alt_regs
is not very descriptive, and worse is that the name is used for
conversions in both directions, i.e., to find the presenting ring from
the signaling ring, and the signaling ring from the presenting ring.
Instead of alt_regs, use the names sig_regs and sig_ring, and regs and
ring for the presenting ring being worked on. Add a helper function to
get the sign_regs, and add some asserts to ensure the POOL regs are
never used to signal interrupts.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-34-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
xive_tctx_pipr_update() is used for multiple things. In an effort
to make things simpler and less overloaded, split out the function
that is used to present a new interrupt to the tctx.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-31-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Have the match_nvt method only perform a TCTX match but don't present
the interrupt, the caller presents. This has no functional change, but
allows for more complicated presentation logic after matching.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-29-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
When disabling (pulling) an xive interrupt context, we need
to redistribute any active group interrupts to other threads
that can handle the interrupt if possible. This support had
already been added for the OS context but had not yet been
added to the pool or physical context.
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-28-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Booting AIX in a PowerVM partition requires the use of the "Acknowledge
O/S Interrupt to even O/S reporting line" special operation provided by
the IBM XIVE interrupt controller. This operation is invoked by writing
a byte (data is irrelevant) to offset 0xC10 of the Thread Interrupt
Management Area (TIMA). It can be used by software to notify the XIVE
logic that the interrupt was received.
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-26-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
When an XIVE context is pulled while it has an active, unacknowledged
group interrupt, XIVE will check to see if a context on another thread
can handle the interrupt and, if so, notify that context. If there
are no contexts that can handle the interrupt, then the interrupt is
added to a backlog and XIVE will attempt to escalate the interrupt,
if configured to do so, allowing the higher privileged handler to
activate a context that can handle the original interrupt.
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-23-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Adds support for extracting additional configuration flags from
the XIVE configuration register that are needed for redistribution
of group interrupts.
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-22-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Add support for XIVE ESB Interrupt Escalation.
Suggested-by: Michael Kowal <kowal@linux.ibm.com>
[This change was taken from a patch provided by Michael Kowal.]
Signed-off-by: Glenn Miles <milesg@linux.vnet.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-18-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Rather than functions to return masks to test NSR bits, have functions
to test those bits directly. This should be no functional change, it
just makes the code more readable.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-16-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The queue size of an Event Notification Descriptor (END)
is determined by the 'cl' and QsZ fields of the END.
If the cl field is 1, then the queue size (in bytes) will
be the size of a cache line 128B * 2^QsZ and QsZ is limited
to 4. Otherwise, it will be 4096B * 2^QsZ with QsZ limited
to 12.
Fixes: f8a233dedf ("ppc/xive2: Introduce a XIVE2 core framework")
Signed-off-by: Glenn Miles <milesg@linux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Michael Kowal <kowal@linux.ibm.com>
Reviewed-by: Caleb Schlossin <calebs@linux.ibm.com>
Tested-by: Gautam Menghani <gautam@linux.ibm.com>
Link: https://lore.kernel.org/qemu-devel/20250512031100.439842-4-npiggin@gmail.com
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Currently the ramfb device loads the vgabios-ramfb.bin unconditionally,
but only the x86 need the vgabios-ramfb.bin, this can cause that when
use the release package on arm64 it can't find the vgabios-ramfb.bin.
Because only seabios will use the vgabios-ramfb.bin, load the rom logic
is x86-specific. For other !x86 platforms, the edk2 ships an EFI driver
for ramfb, so they don't need to load the romfile.
So add a new property use-legacy-x86-rom in both ramfb and vfio_pci
device, because the vfio display also use the ramfb_setup() to load
the vgabios-ramfb.bin file.
After have this property, the machine type can set the compatibility to
not load the vgabios-ramfb.bin if the arch doesn't need it.
For now the default value is true but it will be turned off by default
in subsequent patch when compats get properly handled.
Reviewed-by: Zhao Liu <zhao1.liu@intel.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Shaoqin Huang <shahuang@redhat.com>
Message-ID: <20250717100941.2230408-2-shahuang@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
SPCR acpi table can now be disabled
vhost-vdpa can now report hashing capability to guest
PPTT acpi table now tells guest vCPUs are identical
vost-user-blk now shuts down faster
loongarch64 now supports bios-tables-test
intel_iommu now supports ATS
cxl now supports DCD Fabric Management Command Set
arm now supports acpi pci hotplug
fixes, cleanups
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,pc: features, fixes, tests
SPCR acpi table can now be disabled
vhost-vdpa can now report hashing capability to guest
PPTT acpi table now tells guest vCPUs are identical
vost-user-blk now shuts down faster
loongarch64 now supports bios-tables-test
intel_iommu now supports ATS
cxl now supports DCD Fabric Management Command Set
arm now supports acpi pci hotplug
fixes, cleanups
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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# gpg: Signature made Tue 15 Jul 2025 02:56:48 EDT
# gpg: using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# 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: (97 commits)
hw/cxl: mailbox-utils: 0x5605 - FMAPI Initiate DC Release
hw/cxl: mailbox-utils: 0x5604 - FMAPI Initiate DC Add
hw/cxl: Create helper function to create DC Event Records from extents
hw/cxl: mailbox-utils: 0x5603 - FMAPI Get DC Region Extent Lists
hw/cxl: mailbox-utils: 0x5602 - FMAPI Set DC Region Config
hw/mem: cxl_type3: Add DC Region bitmap lock
hw/cxl: Move definition for dynamic_capacity_uuid and enum for DC event types to header
hw/cxl: mailbox-utils: 0x5601 - FMAPI Get Host Region Config
hw/mem: cxl_type3: Add dsmas_flags to CXLDCRegion struct
hw/cxl: mailbox-utils: 0x5600 - FMAPI Get DCD Info
hw/cxl: fix DC extent capacity tracking
tests: virt: Update expected ACPI tables for virt test
hw/acpi/aml-build: Build a root node in the PPTT table
hw/acpi/aml-build: Set identical implementation flag for PPTT processor nodes
tests: virt: Allow changes to PPTT test table
qtest/bios-tables-test: Generate reference blob for DSDT.acpipcihp
qtest/bios-tables-test: Generate reference blob for DSDT.hpoffacpiindex
tests/qtest/bios-tables-test: Add aarch64 ACPI PCI hotplug test
tests/qtest/bios-tables-test: Prepare for addition of acpi pci hp tests
hw/arm/virt: Let virt support pci hotplug/unplug GED event
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Conflicts:
net/vhost-vdpa.c
vhost_vdpa_set_steering_ebpf() was removed, resolve the context
conflict.
As each target declares the same prototypes, we can
use a single header, removing the TARGET_XXX uses.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Message-Id: <20250513171737.74386-1-philmd@linaro.org>
