The MacOS toolbox ROM calculates the number of branches that can be executed
per millisecond as part of its timer calibration. Since modern hosts are
considerably quicker than original hardware, the negative counter reaches zero
before the calibration completes leading to division by zero later in
CALCULATESLOD.
Instead of trying to fudge the timing loop (which won't work for TimeDBRA/TimeSCCDB
anyhow), use the pattern of access to the VIA1 registers to detect when SETUPTIMEK
has finished executing and write some well-known good timer values to TimeDBRA
and TimeSCCDB taken from real hardware with a suitable scaling factor.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-15-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Update the IWM/ISM register block decoding to match the description given in the
"SWIM Chip Users Reference". This allows us to validate the device response to
the guest OS which currently only does just enough to indicate that the floppy
drive is unavailable.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-14-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The swim chip provides an implementation of both Apple's IWM and ISM floppy disk
controllers. Split the existing implementation into separate register banks for
each controller, whilst also switching the IWM registers from 16-bit to 8-bit
as implemented in real hardware.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-13-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This determines whether the Apple Sound Chip (ASC) is set to enhanced mode
(default) or to original mode. The real Q800 hardware used an EASC chip however
a lot of older software only works with the older ASC chip.
Adding this as a machine parameter allows QEMU to be used as an developer aid
for testing and migrating code from ASC to EASC.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-11-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The Quadra 800 has the enhanced ASC (EASC) audio chip which supports both the
legacy IRQ routing through VIA2 and also "A/UX" mode routing direct to the
CPU.
Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231004083806.757242-10-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
MacOS (un)helpfully leaves the FIFO engine running even when all the samples have
been written to the hardware, and expects the FIFO status flags and IRQ to be
updated continuously.
There is an additional problem in that not all audio backends guarantee an
all-zero output when there is no FIFO data available, in particular the Windows
dsound backend which re-uses its internal circular buffer causing the last played
sound to loop indefinitely.
Whilst this is effectively a bug in the Windows dsound backend, work around it
for now using a simple heuristic: if the FIFO remains empty for half a cycle
(~23ms) then continuously fill the generated buffer with empty silence.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-9-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The Apple Sound Chip was primarily used by the Macintosh II to generate sound
in hardware which was previously handled by the toolbox ROM with software
interrupts.
Implement both the standard ASC and also the enhanced ASC (EASC) functionality
which is used in the Quadra 800.
Note that whilst real ASC hardware uses AUDIO_FORMAT_S8, this implementation uses
AUDIO_FORMAT_U8 instead because AUDIO_FORMAT_S8 is rarely used and not supported
by some audio backends like PulseAudio and DirectSound when played directly with
-audiodev out.mixing-engine=off.
Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Co-developed-by: Volker Rümelin <vr_qemu@t-online.de>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Message-ID: <20231004083806.757242-8-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
MacOS attempts a series of writes and reads over the entire RAM area in order
to determine the amount of RAM within the machine. Allow accesses to the
entire RAM area ignoring writes and always reading zero for areas where there
is no physical RAM installed to allow MacOS to detect the memory size without
faulting.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-7-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
It is needed because it defines the BIOSConfig area.
Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: BALATON Zoltan <balaton@eik.bme.hu>
Message-ID: <20231004083806.757242-6-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
MacOS reads this address to identify the hardware.
This is a basic implementation returning the ID of Quadra 800.
Details:
http://mess.redump.net/mess/driver_info/mac_technical_notes
"There are 3 ID schemes [...]
The third and most scalable is a machine ID register at 0x5ffffffc.
The top word must be 0xa55a to be valid. Then bits 15-11 are 0 for
consumer Macs, 1 for portables, 2 for high-end 68k, and 3 for high-end
PowerPC. Bit 10 is 1 if additional ID bits appear elsewhere (e.g. in VIA1).
The rest of the bits are a per-model identifier.
Model Lower 16 bits of ID
...
Quadra/Centris 610/650/800 0x2BAD"
Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004083806.757242-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The djMEMC controller is used to store information related to the physical memory
configuration.
Co-developed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20231004083806.757242-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Convert the GLUE device to 3-phase reset. The legacy method
doesn't do anything that's invalid in the hold phase, so the
conversion is simple and not a behaviour change.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-ID: <20231004083806.757242-2-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
During migration restoring, vfio_enable_vectors() is called to restore
enabling MSI-X interrupts for assigned devices. It sets the range from
0 to nr_vectors to kernel to enable MSI-X and the vectors unmasked in
guest. During the MSI-X enabling, all the vectors within the range are
allocated according to the VFIO_DEVICE_SET_IRQS ioctl.
When dynamic MSI-X allocation is supported, we only want the guest
unmasked vectors being allocated and enabled. Use vector 0 with an
invalid fd to get MSI-X enabled, after that, all the vectors can be
allocated in need.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Guests typically enable MSI-X with all of the vectors masked in the MSI-X
vector table. To match the guest state of device, QEMU enables MSI-X by
enabling vector 0 with userspace triggering and immediately release.
However the release function actually does not release it due to already
using userspace mode.
It is no need to enable triggering on host and rely on the mask bit to
avoid spurious interrupts. Use an invalid fd (i.e. fd = -1) is enough
to get MSI-X enabled.
After dynamic MSI-X allocation is supported, the interrupt restoring
also need use such way to enable MSI-X, therefore, create a function
for that.
Suggested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The vector_use callback is used to enable vector that is unmasked in
guest. The kernel used to only support static MSI-X allocation. When
allocating a new interrupt using "static MSI-X allocation" kernels,
QEMU first disables all previously allocated vectors and then
re-allocates all including the new one. The nr_vectors of VFIOPCIDevice
indicates that all vectors from 0 to nr_vectors are allocated (and may
be enabled), which is used to loop all the possibly used vectors when
e.g., disabling MSI-X interrupts.
Extend the vector_use function to support dynamic MSI-X allocation when
host supports the capability. QEMU therefore can individually allocate
and enable a new interrupt without affecting others or causing interrupts
lost during runtime.
Utilize nr_vectors to calculate the upper bound of enabled vectors in
dynamic MSI-X allocation mode since looping all msix_entries_nr is not
efficient and unnecessary.
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Tested-by: Reinette Chatre <reinette.chatre@intel.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Kernel provides the guidance of dynamic MSI-X allocation support of
passthrough device, by clearing the VFIO_IRQ_INFO_NORESIZE flag to
guide user space.
Fetch the flags from host to determine if dynamic MSI-X allocation is
supported.
Originally-by: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Jing Liu <jing2.liu@intel.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
vfio_put_device() is a VFIO PCI specific function, rename it with
'vfio_pci' prefix to avoid confusing.
No functional change.
Suggested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
The below referenced commit renames scanout_width/height to
backing_width/height, but also promotes these fields in various portions
of the egl interface. Meanwhile vfio dmabuf support has never used the
previous scanout fields and is therefore missed in the update. This
results in a black screen when transitioning from ramfb to dmabuf display
when using Intel vGPU with these features.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1891
Link: https://lists.gnu.org/archive/html/qemu-devel/2023-08/msg02726.html
Fixes: 9ac06df8b6 ("virtio-gpu-udmabuf: correct naming of QemuDmaBuf size properties")
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Cédric Le Goater <clg@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
vdpa:
shadow vq vlan support
net migration with cvq
cxl:
support emulating 4 HDM decoders
serial number extended capability
virtio:
hared dma-buf
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
virtio,pci: features, cleanups
vdpa:
shadow vq vlan support
net migration with cvq
cxl:
support emulating 4 HDM decoders
serial number extended capability
virtio:
hared dma-buf
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu: (53 commits)
libvhost-user: handle shared_object msg
vhost-user: add shared_object msg
hw/display: introduce virtio-dmabuf
util/uuid: add a hash function
virtio: remove unused next argument from virtqueue_split_read_next_desc()
virtio: remove unnecessary thread fence while reading next descriptor
virtio: use shadow_avail_idx while checking number of heads
libvhost-user.c: add assertion to vu_message_read_default
pcie_sriov: unregister_vfs(): fix error path
hw/i386/pc: improve physical address space bound check for 32-bit x86 systems
amd_iommu: Fix APIC address check
vdpa net: follow VirtIO initialization properly at cvq isolation probing
vdpa net: stop probing if cannot set features
vdpa net: fix error message setting virtio status
hw/pci-bridge/cxl-upstream: Add serial number extended capability support
hw/cxl: Support 4 HDM decoders at all levels of topology
hw/cxl: Fix and use same calculation for HDM decoder block size everywhere
hw/cxl: Add utility functions decoder interleave ways and target count.
hw/cxl: Push cxl_decoder_count_enc() and cxl_decode_ig() into .c
vdpa net: zero vhost_vdpa iova_tree pointer at cleanup
...
Conflicts:
hw/core/machine.c
Context conflict with commit 314e0a84cd ("hw/core: remove needless
includes") because it removed an adjacent #include.
Add three new vhost-user protocol
`VHOST_USER_BACKEND_SHARED_OBJECT_* messages`.
These new messages are sent from vhost-user
back-ends to interact with the virtio-dmabuf
table in order to add or remove themselves as
virtio exporters, or lookup for virtio dma-buf
shared objects.
The action taken in the front-end depends
on the type stored in the virtio shared
object hash table.
When the table holds a pointer to a vhost
backend for a given UUID, the front-end sends
a VHOST_USER_GET_SHARED_OBJECT to the
backend holding the shared object.
The messages can only be sent after successfully
negotiating a new VHOST_USER_PROTOCOL_F_SHARED_OBJECT
vhost-user protocol feature bit.
Finally, refactor code to send response message so
that all common parts both for the common REPLY_ACK
case, and other data responses, can call it and
avoid code repetition.
Signed-off-by: Albert Esteve <aesteve@redhat.com>
Message-Id: <20231002065706.94707-4-aesteve@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This API manages objects (in this iteration,
dmabuf fds) that can be shared along different
virtio devices, associated to a UUID.
The API allows the different devices to add,
remove and/or retrieve the objects by simply
invoking the public functions that reside in the
virtio-dmabuf file.
For vhost backends, the API stores the pointer
to the backend holding the object.
Suggested-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Albert Esteve <aesteve@redhat.com>
Message-Id: <20231002065706.94707-3-aesteve@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The 'next' was converted from a local variable to an output parameter
in commit:
412e0e81b1 ("virtio: handle virtqueue_read_next_desc() errors")
But all the actual uses of the 'i/next' as an output were removed a few
months prior in commit:
aa570d6fb6 ("virtio: combine the read of a descriptor")
Remove the unused argument to simplify the code.
Also, adding a comment to the function to describe what it is actually
doing, as it is not obvious that the 'desc' is both an input and an
output argument.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Message-Id: <20230927140016.2317404-3-i.maximets@ovn.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
It was supposed to be a compiler barrier and it was a compiler barrier
initially called 'wmb' when virtio core support was introduced.
Later all the instances of 'wmb' were switched to smp_wmb to fix memory
ordering issues on non-x86 platforms. However, this one doesn't need
to be an actual barrier, as its only purpose was to ensure that the
value is not read twice.
And since commit aa570d6fb6 ("virtio: combine the read of a descriptor")
there is no need for a barrier at all, since we're no longer reading
guest memory here, but accessing a local structure.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Message-Id: <20230927140016.2317404-2-i.maximets@ovn.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
We do not need the most up to date number of heads, we only want to
know if there is at least one.
Use shadow variable as long as it is not equal to the last available
index checked. This avoids expensive qatomic dereference of the
RCU-protected memory region cache as well as the memory access itself.
The change improves performance of the af-xdp network backend by 2-3%.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Message-Id: <20230927135157.2316982-1-i.maximets@ovn.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
local_err must be NULL before calling object_property_set_bool(), so we
must clear it on each iteration. Let's also use more convenient
error_reportf_err().
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230925194040.68592-8-vsementsov@yandex-team.ru>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
32-bit x86 systems do not have a reserved memory for hole64. On those 32-bit
systems without PSE36 or PAE CPU features, hotplugging memory devices are not
supported by QEMU as QEMU always places hotplugged memory above 4 GiB boundary
which is beyond the physical address space of the processor. Linux guests also
does not support memory hotplug on those systems. Please see Linux
kernel commit b59d02ed08690 ("mm/memory_hotplug: disable the functionality
for 32b") for more details.
Therefore, the maximum limit of the guest physical address in the absence of
additional memory devices effectively coincides with the end of
"above 4G memory space" region for 32-bit x86 without PAE/PSE36. When users
configure additional memory devices, after properly accounting for the
additional device memory region to find the maximum value of the guest
physical address, the address will be outside the range of the processor's
physical address space.
This change adds improvements to take above into consideration.
For example, previously this was allowed:
$ ./qemu-system-x86_64 -cpu pentium -m size=10G
With this change now it is no longer allowed:
$ ./qemu-system-x86_64 -cpu pentium -m size=10G
qemu-system-x86_64: Address space limit 0xffffffff < 0x2bfffffff phys-bits too low (32)
However, the following are allowed since on both cases physical address
space of the processor is 36 bits:
$ ./qemu-system-x86_64 -cpu pentium2 -m size=10G
$ ./qemu-system-x86_64 -cpu pentium,pse36=on -m size=10G
For 32-bit, without PAE/PSE36, hotplugging additional memory is no longer allowed.
$ ./qemu-system-i386 -m size=1G,maxmem=3G,slots=2
qemu-system-i386: Address space limit 0xffffffff < 0x1ffffffff phys-bits too low (32)
$ ./qemu-system-i386 -machine q35 -m size=1G,maxmem=3G,slots=2
qemu-system-i386: Address space limit 0xffffffff < 0x1ffffffff phys-bits too low (32)
A new compatibility flag is introduced to make sure pc_max_used_gpa() keeps
returning the old value for machines 8.1 and older.
Therefore, the above is still allowed for older machine types in order to support
compatibility. Hence, the following still works:
$ ./qemu-system-i386 -machine pc-i440fx-8.1 -m size=1G,maxmem=3G,slots=2
$ ./qemu-system-i386 -machine pc-q35-8.1 -m size=1G,maxmem=3G,slots=2
Further, following is also allowed as with PSE36, the processor has 36-bit
address space:
$ ./qemu-system-i386 -cpu 486,pse36=on -m size=1G,maxmem=3G,slots=2
After calling CPUID with EAX=0x80000001, all AMD64 compliant processors
have the longmode-capable-bit turned on in the extended feature flags (bit 29)
in EDX. The absence of CPUID longmode can be used to differentiate between
32-bit and 64-bit processors and is the recommended approach. QEMU takes this
approach elsewhere (for example, please see x86_cpu_realizefn()), With
this change, pc_max_used_gpa() also uses the same method to detect 32-bit
processors.
Unit tests are modified to not run 32-bit x86 tests that use memory hotplug.
Suggested-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230922160413.165702-1-anisinha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
An MSI from I/O APIC may not exactly equal to APIC_DEFAULT_ADDRESS. In
fact, Windows 17763.3650 configures I/O APIC to set the dest_mode bit.
Cover the range assigned to APIC.
Fixes: 577c470f43 ("x86_iommu/amd: Prepare for interrupt remap support")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20230921114612.40671-1-akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Will be needed so there is a defined serial number for
information queries via the Switch CCI.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230913133615.29876-1-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Support these decoders in CXL host bridges (pxb-cxl), CXL Switch USP
and CXL Type 3 end points.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230913132523.29780-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In order to avoid having the size of the per HDM decoder register block
repeated in lots of places, create the register definitions for HDM
decoder 1 and use the offset between the first registers in HDM decoder 0 and
HDM decoder 1 to establish the offset.
Calculate in each function as this is more obvious and leads to shorter
line lengths than a single #define which would need a long name
to be specific enough.
Note that the code currently only supports one decoder, so the bugs this
fixes don't actually affect anything.
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230913132523.29780-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
As an encoded version of these key configuration parameters is available
in a register, provide functions to extract it again so as to avoid
the need for duplicating the storage.
Whilst here update the _enc() function to include additional values
as defined in the CXL 3.0 specification. Whilst they are not
currently used in the emulation, they may be in future and it is
easier to compare with the specification if all values are covered.
Add a spec reference for cxl_interleave_ways_enc() for consistency
with the target count equivalent (and because it's nice to know where
the magic numbers come from).
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230913132523.29780-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
There is no strong justification for keeping these in the header
so push them down into the associated cxl-component-utils.c file.
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230913132523.29780-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The bit positions of both registers are related. Tracing the registers
independently results in the same offsets across these registers which
eases debugging.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Acked-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-9-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-8-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The SMI command port is currently hardcoded by means of the ACPI_PORT_SMI_CMD
macro. This hardcoding is Intel specific and doesn't match VIA, for example.
There is already the AcpiFadtData::smi_cmd attribute which is used when building
the FADT. Let's also use it when building the DSDT which confines SMI command
port determination to just one place. This allows it to become a property later,
thus resolving the Intel assumption.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-7-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Now that TYPE_ACPI_GED_X86 doesn't assign AcpiDeviceIfClass::madt_cpu any more
it is the same as TYPE_ACPI_GED.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-6-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The "hw/boards.h" is unused since the previous commit. Since its removal
requires include fixes in various unrelated files to keep the code compiling it
has been split in a dedicated commit.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-5-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This virtual method was always set to the x86-specific pc_madt_cpu_entry(),
even in piix4 which is also used in MIPS. The previous changes use
pc_madt_cpu_entry() otherwise, so madt_cpu can be dropped.
Since pc_madt_cpu_entry() is now only used in x86-specific code, the stub
in hw/acpi/acpi-x86-stub can be removed as well.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-4-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
build_cpus_aml() is architecture independent but needs to create architecture-
specific CPU AML. So far this was achieved by using a virtual method from
TYPE_ACPI_DEVICE_IF. However, build_cpus_aml() would resolve this interface from
global (!) state. This makes it quite incomprehensible where this interface
comes from (TYPE_PIIX4_PM?, TYPE_ICH9_LPC_DEVICE?, TYPE_ACPI_GED_X86?) an can
lead to crashes when the generic code is ported to new architectures.
So far, build_cpus_aml() is only called in architecture-specific code -- and
only in x86. We can therefore simply pass pc_madt_cpu_entry() as callback to
build_cpus_aml(). This is the same callback that would be used through
TYPE_ACPI_DEVICE_IF.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-3-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This is x86-specific code, so there is no advantage in using
pc_madt_cpu_entry() behind an architecture-agnostic interface.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230908084234.17642-2-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
As noted in the comment, the PCI INTx lines are supposed to be routed
to *both* the PIC and the I/O APIC. It's just that we don't cope with
the concept of an IRQ being asserted to two *different* pins on the
two irqchips.
So we have this hack of routing to I/O APIC only if the PIRQ routing to
the PIC is disabled. Which seems to work well enough, even when I try
hard to break it with kexec. But should be explicitly documented and
understood.
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Message-Id: <112a09643b8191c4eae7d92fa247a861ab90a9ee.camel@infradead.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Move the definition of VhostUserProtocolFeature to
include/hw/virtio/vhost-user.h.
Remove previous definitions in hw/scsi/vhost-user-scsi.c,
hw/virtio/vhost-user.c, and hw/virtio/virtio-qmp.c.
Previously there were 3 separate definitions of this over 3 different
files. Now only 1 definition of this will be present for these 3 files.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Reviewed-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20230926224107.2951144-4-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Add new vhost-user protocol feature to vhost-user protocol feature map
and enumeration:
- VHOST_USER_PROTOCOL_F_STATUS
Add new virtio device features for several virtio devices to their
respective feature mappings:
virtio-blk:
- VIRTIO_BLK_F_SECURE_ERASE
virtio-net:
- VIRTIO_NET_F_NOTF_COAL
- VIRTIO_NET_F_GUEST_USO4
- VIRTIO_NET_F_GUEST_USO6
- VIRTIO_NET_F_HOST_USO
virtio/vhost-user-gpio:
- VIRTIO_GPIO_F_IRQ
- VHOST_USER_F_PROTOCOL_FEATURES
Add support for introspection on vhost-user-gpio devices.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Reviewed-by: Emmanouil Pitsidianakis <manos.pitsidianakis@linaro.org>
Message-Id: <20230926224107.2951144-3-jonah.palmer@oracle.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The virtio_list duplicates information about virtio devices that already
exist in the QOM composition tree. Instead of creating this list of
realized virtio devices, search the QOM composition tree instead.
This patch modifies the QMP command qmp_x_query_virtio to instead
recursively search the QOM composition tree for devices of type
'TYPE_VIRTIO_DEVICE'. The device is also checked to ensure it's
realized.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230926224107.2951144-2-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Next patches in this series will no longer perform an
immediate poll and check of the device's used buffers
for each CVQ state load command. Instead, they will
send CVQ state load commands in parallel by polling
multiple pending buffers at once.
To achieve this, this patch refactoring vhost_svq_poll()
to accept a new argument `num`, which allows vhost_svq_poll()
to wait for the device to use multiple elements,
rather than polling for a single element.
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <950b3bfcfc5d446168b9d6a249d554a013a691d4.1693287885.git.yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Doing that way allows CVQ to be enabled before the dataplane vqs,
restoring the state as MQ or MAC addresses properly in the case of a
migration.
The patch does it by defining a ->load NetClientInfo callback also for
dataplane. Ideally, this should be done by an independent patch, but
the function is already static so it would only add an empty
vhost_vdpa_net_data_load stub.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230822085330.3978829-5-eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The vhost-vdpa net backend needs to enable vrings in a different order
than default, so export it.
No functional change intended except for tracing, that now includes the
(virtio) index being enabled and the return value of the ioctl.
Still ignoring return value of this function if called from
vhost_vdpa_dev_start, as reorganize calling code around it is out of
the scope of this series.
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20230822085330.3978829-3-eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Lots of virtio functions that are on a hot path in data transmission
are initializing indirect descriptor cache at the point of stack
allocation. It's a 112 byte structure that is getting zeroed out on
each call adding unnecessary overhead. It's going to be correctly
initialized later via special init function. The only reason to
actually initialize right away is the ability to safely destruct it.
Replacing a designated initializer with a function to only initialize
what is necessary.
Removal of the unnecessary stack initializations improves throughput
of virtio-net devices in terms of 64B packets per second by 6-14 %
depending on the case. Tested with a proposed af-xdp network backend
and a dpdk testpmd application in the guest, but should be beneficial
for other virtio devices as well.
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
Message-Id: <20230811143423.3258788-1-i.maximets@ovn.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
vhost-vdpa shadowed CVQ needs to know the maximum number of
vlans supported by the virtio-net device, so QEMU can restore
the VLAN state in a migration.
Co-developed-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <ca03403319c6405ea7c400836a572255bbc9ceba.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This function is called after virtio_load, so all vlan configuration is
lost in migration case.
Just allow all the vlan-tagged packets if vlan is not configured, and
trust device reset to clear all filtered vlans.
Fixes: 0b1eaa8803 ("virtio-net: Do not filter VLANs without F_CTRL_VLAN")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Hawkins Jiawei <yin31149@gmail.com>
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Message-Id: <95af0d013281282f48ad3f47f6ad1ac4ca9e52eb.1690106284.git.yin31149@gmail.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To use the generic device the user will need to provide the config
region size via the command line. We also add a notifier so the guest
can be pinged if the remote daemon updates the config.
With these changes:
-device vhost-user-device-pci,virtio-id=41,num_vqs=2,config_size=8
is equivalent to:
-device vhost-user-gpio-pci
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230710153522.3469097-11-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In theory we shouldn't need to repeat so much boilerplate to support
vhost-user backends. This provides a generic vhost-user-base QOM
object and a derived vhost-user-device for which the user needs to
provide the few bits of information that aren't currently provided by
the vhost-user protocol. This should provide a baseline implementation
from which the other vhost-user stub can specialise.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20230710153522.3469097-8-alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Similarly to commit de6cd7599b ("meson: Replace softmmu_ss
-> system_ss"), rename the virtio source set common to all
system emulation as 'system_virtio_ss[]'. This is clearer
because softmmu can be used for user emulation.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230710100510.84862-1-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The previous commit removed the dependencies on the
target-specific TARGET_PAGE_FOO macros. We can now
move vhost-vdpa.c to the 'softmmu_virtio_ss' source
set to build it once for all our targets.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230710100432.84819-1-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Similarly to commit e414ed2c47 ("virtio-iommu: Use
target-agnostic qemu_target_page_mask"), Replace the
target-specific TARGET_PAGE_SIZE and TARGET_PAGE_MASK
definitions by a call to the runtime qemu_target_page_size()
helper which is target agnostic.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230710094931.84402-5-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Use TARGET_PAGE_SIZE to calculate TARGET_PAGE_ALIGN
(see the rationale in previous commits).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230710094931.84402-4-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Propagate TARGET_PAGE_MASK (see the previous commit for
rationale).
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230710094931.84402-3-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
In order to make vhost-vdpa.c a target-agnostic source unit,
we need to remove the TARGET_PAGE_SIZE / TARGET_PAGE_MASK /
TARGET_PAGE_ALIGN uses. TARGET_PAGE_SIZE will be replaced by
the runtime qemu_target_page_size(). The other ones will be
deduced from TARGET_PAGE_SIZE.
Since the 3 macros are used in 3 related functions (sharing
the same call tree), we'll refactor them to only depend on
TARGET_PAGE_MASK.
Having the following call tree:
vhost_vdpa_listener_region_del()
-> vhost_vdpa_listener_skipped_section()
-> vhost_vdpa_section_end()
The first step is to propagate TARGET_PAGE_MASK to
vhost_vdpa_listener_skipped_section().
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230710094931.84402-2-philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
current code sets PCI_SEC_LATENCY_TIMER to RW, but for
pcie to pcie bridges it must be RO 0 according to
pci express spec which says:
This register does not apply to PCI Express. It must be read-only
and hardwired to 00h. For PCI Express to PCI/PCI-X Bridges, refer to the
[PCIe-to-PCI-PCI-X-Bridge] for requirements for this register.
also, fix typo in comment where it's made writeable - this typo
is likely what prevented us noticing we violate this requirement
in the 1st place.
Reported-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Message-Id: <de9d05366a70172e1789d10591dbe59e39c3849c.1693432039.git.mst@redhat.com>
Tested-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Minimize the displacement to can_do_io, since it may
be touched at the start of each TranslationBlock.
It fits into other padding within the substructure.
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* fix for KVM on Apple M2
* introduce machine property "audiodev"
* ui/vnc: Require audiodev= to enable audio
* audio: remove QEMU_AUDIO_* and -audio-help support
* audio: forbid using default audiodev backend with -audiodev and -nodefaults
* remove compatibility code for old machine types
* make-release: do not ship dtc sources
* build system cleanups
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging
* fix from optionrom build
* fix for KVM on Apple M2
* introduce machine property "audiodev"
* ui/vnc: Require audiodev= to enable audio
* audio: remove QEMU_AUDIO_* and -audio-help support
* audio: forbid using default audiodev backend with -audiodev and -nodefaults
* remove compatibility code for old machine types
* make-release: do not ship dtc sources
* build system cleanups
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# gpg: Signature made Tue 03 Oct 2023 04:30:00 EDT
# 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: (24 commits)
audio: forbid default audiodev backend with -nodefaults
audio: propagate Error * out of audio_init
vt82c686 machines: Support machine-default audiodev with fallback
hw/ppc: Support machine-default audiodev with fallback
hw/arm: Support machine-default audiodev with fallback
Introduce machine property "audiodev"
audio: remove QEMU_AUDIO_* and -audio-help support
audio: simplify flow in audio_init
audio: commonize voice initialization
audio: return Error ** from audio_state_by_name
audio: allow returning an error from the driver init
audio: Require AudioState in AUD_add_capture
ui/vnc: Require audiodev= to enable audio
crypto: only include tls-cipher-suites in emulators
scsi-disk: ensure that FORMAT UNIT commands are terminated
esp: restrict non-DMA transfer length to that of available data
esp: use correct type for esp_dma_enable() in sysbus_esp_gpio_demux()
Makefile: build plugins before running TCG tests
meson: clean up static_library keyword arguments
make-release: do not ship dtc sources
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The fw_cfg DMA write callback in ramfb prepares a new display surface in
QEMU; this new surface is put to use ("swapped in") upon the next display
update. At that time, the old surface (if any) is released.
If the guest triggers the fw_cfg DMA write callback at least twice between
two adjacent display updates, then the second callback (and further such
callbacks) will leak the previously prepared (but not yet swapped in)
display surface.
The issue can be shown by:
(1) starting QEMU with "-trace displaysurface_free", and
(2) running the following program in the guest UEFI shell:
> #include <Library/ShellCEntryLib.h> // ShellAppMain()
> #include <Library/UefiBootServicesTableLib.h> // gBS
> #include <Protocol/GraphicsOutput.h> // EFI_GRAPHICS_OUTPUT_PROTOCOL
>
> INTN
> EFIAPI
> ShellAppMain (
> IN UINTN Argc,
> IN CHAR16 **Argv
> )
> {
> EFI_STATUS Status;
> VOID *Interface;
> EFI_GRAPHICS_OUTPUT_PROTOCOL *Gop;
> UINT32 Mode;
>
> Status = gBS->LocateProtocol (
> &gEfiGraphicsOutputProtocolGuid,
> NULL,
> &Interface
> );
> if (EFI_ERROR (Status)) {
> return 1;
> }
>
> Gop = Interface;
>
> Mode = 1;
> for ( ; ;) {
> Status = Gop->SetMode (Gop, Mode);
> if (EFI_ERROR (Status)) {
> break;
> }
>
> Mode = 1 - Mode;
> }
>
> return 1;
> }
The symptom is then that:
- only one trace message appears periodically,
- the time between adjacent messages keeps increasing -- implying that
some list structure (containing the leaked resources) keeps growing,
- the "surface" pointer is ever different.
> 18566@1695127471.449586:displaysurface_free surface=0x7f2fcc09a7c0
> 18566@1695127471.529559:displaysurface_free surface=0x7f2fcc9dac10
> 18566@1695127471.659812:displaysurface_free surface=0x7f2fcc441dd0
> 18566@1695127471.839669:displaysurface_free surface=0x7f2fcc0363d0
> 18566@1695127472.069674:displaysurface_free surface=0x7f2fcc413a80
> 18566@1695127472.349580:displaysurface_free surface=0x7f2fcc09cd00
> 18566@1695127472.679783:displaysurface_free surface=0x7f2fcc1395f0
> 18566@1695127473.059848:displaysurface_free surface=0x7f2fcc1cae50
> 18566@1695127473.489724:displaysurface_free surface=0x7f2fcc42fc50
> 18566@1695127473.969791:displaysurface_free surface=0x7f2fcc45dcc0
> 18566@1695127474.499708:displaysurface_free surface=0x7f2fcc70b9d0
> 18566@1695127475.079769:displaysurface_free surface=0x7f2fcc82acc0
> 18566@1695127475.709941:displaysurface_free surface=0x7f2fcc369c00
> 18566@1695127476.389619:displaysurface_free surface=0x7f2fcc32b910
> 18566@1695127477.119772:displaysurface_free surface=0x7f2fcc0d5a20
> 18566@1695127477.899517:displaysurface_free surface=0x7f2fcc086c40
> 18566@1695127478.729962:displaysurface_free surface=0x7f2fccc72020
> 18566@1695127479.609839:displaysurface_free surface=0x7f2fcc185160
> 18566@1695127480.539688:displaysurface_free surface=0x7f2fcc23a7e0
> 18566@1695127481.519759:displaysurface_free surface=0x7f2fcc3ec870
> 18566@1695127482.549930:displaysurface_free surface=0x7f2fcc634960
> 18566@1695127483.629661:displaysurface_free surface=0x7f2fcc26b140
> 18566@1695127484.759987:displaysurface_free surface=0x7f2fcc321700
> 18566@1695127485.940289:displaysurface_free surface=0x7f2fccaad100
We figured this wasn't a CVE-worthy problem, as only small amounts of
memory were leaked (the framebuffer itself is mapped from guest RAM, QEMU
only allocates administrative structures), plus libvirt restricts QEMU
memory footprint anyway, thus the guest can only DoS itself.
Plug the leak, by releasing the last prepared (not yet swapped in) display
surface, if any, in the fw_cfg DMA write callback.
Regarding the "reproducer", with the fix in place, the log is flooded with
trace messages (one per fw_cfg write), *and* the trace message alternates
between just two "surface" pointer values (i.e., nothing is leaked, the
allocator flip-flops between two objects in effect).
This issue appears to date back to the introducion of ramfb (995b30179b,
"hw/display: add ramfb, a simple boot framebuffer living in guest ram",
2018-06-18).
Cc: Gerd Hoffmann <kraxel@redhat.com> (maintainer:ramfb)
Cc: qemu-stable@nongnu.org
Fixes: 995b30179b
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230919131955.27223-1-lersek@redhat.com>
The include list is gigantic, make it smaller.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Starting from audio_driver_init, propagate errors via Error ** so that
audio_init_audiodevs can simply pass &error_fatal, and AUD_register_card
can signal faiure.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
[Reworked the audio/audio.c parts, while keeping Martin's hw/ changes. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Many machine types have default audio devices with no way to set the underlying
audiodev. Instead of adding an option for each and every one of them, this new
property can be used as a default during machine initialisation when creating
such devices.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
[Make the property optional, instead of including it in all machines. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
tls-cipher-suites is an object that is used to inject TLS configuration
into the guest (via fw_cfg). It is never used for host-side TLS
operation, and therefore it need not be available in the tools.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Otherwise when a FORMAT UNIT command is issued, the SCSI layer can become
confused because it can find itself in the situation where it thinks there
is still data to be transferred which can cause the next emulated SCSI
command to fail.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Fixes: 6ab71761 ("scsi-disk: add FORMAT UNIT command")
Tested-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20230913204410.65650-4-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In the case where a SCSI layer transfer is incorrectly terminated, it is
possible for a TI command to cause a SCSI buffer overflow due to the
expected transfer data length being less than the available data in the
FIFO. When this occurs the unsigned async_len variable underflows and
becomes a large offset which writes past the end of the allocated SCSI
buffer.
Restrict the non-DMA transfer length to be the smallest of the expected
transfer length and the available FIFO data to ensure that it is no longer
possible for the SCSI buffer overflow to occur.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1810
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20230913204410.65650-3-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The call to esp_dma_enable() was being made with the SYSBUS_ESP type instead of
the ESP type. This meant that when GPIO 1 was being used to trigger a DMA
request from an external DMA controller, the setting of ESPState's dma_enabled
field would clobber unknown memory whilst the dma_cb callback pointer would
typically return NULL so the DMA request would never start.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20230913204410.65650-2-mark.cave-ayland@ilande.co.uk>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fix local variable shadowing in nvme_ns_init().
Reported-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Message-ID: <20230925-fix-local-shadowing-v1-1-3a1172132377@samsung.com>
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Bugs love to hide in such code.
Evidence: "[PATCH v3 1/7] migration/rdma: Fix save_page method to fail
on polling error".
This patch removes the local variable shadowing. Tested by adding:
--extra-cflags='-Wshadow=local -Wno-error=shadow=local -Wno-error=shadow=compatible-local'
To configure
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Message-ID: <20230925043023.71448-2-alistair.francis@wdc.com>
Reviewed-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This patch fixes the warning of shadowed local variable:
../hw/i386/intel_iommu.c: In function ‘vtd_address_space_unmap’:
../hw/i386/intel_iommu.c:3773:18: warning: declaration of ‘size’ shadows a previous local [-Wshadow=compatible-local]
3773 | uint64_t size = mask + 1;
| ^~~~
../hw/i386/intel_iommu.c:3747:12: note: shadowed declaration is here
3747 | hwaddr size, remain;
| ^~~~
Cc: Jason Wang <jasowang@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-ID: <20230922160410.138786-1-peterx@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
commit 8137355e85 ("aspeed/timer: Fix behaviour running Linux")
introduced a MAX() expression to calculate the next timer deadline :
return calculate_time(t, MAX(MAX(t->match[0], t->match[1]), 0));
The second MAX() is not necessary since the compared values are an
unsigned and 0. Simply remove it and fix warning :
../hw/timer/aspeed_timer.c: In function ‘calculate_next’:
../include/qemu/osdep.h:396:31: warning: declaration of ‘_a’ shadows a previous local [-Wshadow=compatible-local]
396 | typeof(1 ? (a) : (b)) _a = (a), _b = (b); \
| ^~
../hw/timer/aspeed_timer.c:170:12: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
../hw/timer/aspeed_timer.c:170:16: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
/home/legoater/work/qemu/qemu-aspeed.git/include/qemu/osdep.h:396:31: note: shadowed declaration is here
396 | typeof(1 ? (a) : (b)) _a = (a), _b = (b); \
| ^~
../hw/timer/aspeed_timer.c:170:12: note: in expansion of macro ‘MAX’
170 | next = MAX(MAX(calculate_match(t, 0), calculate_match(t, 1)), 0);
| ^~~
Cc: Joel Stanley <joel@jms.id.au>
Cc: Andrew Jeffery <andrew@aj.id.au>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230922155924.1172019-5-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Remove superfluous local 'irq' variables and use the one define at the
top of the routine. This fixes warnings in aspeed_soc_ast2600_realize()
such as :
../hw/arm/aspeed_ast2600.c: In function ‘aspeed_soc_ast2600_realize’:
../hw/arm/aspeed_ast2600.c:420:18: warning: declaration of ‘irq’ shadows a previous local [-Wshadow=compatible-local]
420 | qemu_irq irq = aspeed_soc_get_irq(s, ASPEED_DEV_TIMER1 + i);
| ^~~
../hw/arm/aspeed_ast2600.c:312:14: note: shadowed declaration is here
312 | qemu_irq irq;
| ^~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230922155924.1172019-3-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Remove superfluous local 'data' variable and use the one define at the
top of the routine. This fixes :
../hw/i2c/aspeed_i2c.c: In function ‘aspeed_i2c_bus_recv’:
../hw/i2c/aspeed_i2c.c:315:17: warning: declaration of ‘data’ shadows a previous local [-Wshadow=compatible-local]
315 | uint8_t data;
| ^~~~
../hw/i2c/aspeed_i2c.c:288:13: note: shadowed declaration is here
288 | uint8_t data;
| ^~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230922155924.1172019-2-clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
The STE_CTXPTR() and STE_S2TTB() macros both extract two halves
of an address from fields in the STE and combine them into a
single value to return. The current code for this uses a GCC
statement expression. There are two problems with this:
(1) The type chosen for the variable in the statement expr
is 'unsigned long', which might not be 64 bits
(2) the name chosen for the variable causes -Wshadow warnings
because it's the same as a variable in use at the callsite:
In file included from ../../hw/arm/smmuv3.c:34:
../../hw/arm/smmuv3.c: In function ‘smmu_get_cd’:
../../hw/arm/smmuv3-internal.h:538:23: warning: declaration of ‘addr’ shadows a previous local [-Wshadow=compatible-local]
538 | unsigned long addr; \
| ^~~~
../../hw/arm/smmuv3.c:339:23: note: in expansion of macro ‘STE_CTXPTR’
339 | dma_addr_t addr = STE_CTXPTR(ste);
| ^~~~~~~~~~
../../hw/arm/smmuv3.c:339:16: note: shadowed declaration is here
339 | dma_addr_t addr = STE_CTXPTR(ste);
| ^~~~
Sidestep both of these problems by just using a single
expression rather than a statement expr.
For CMD_ADDR, we got the type of the variable right but still
run into -Wshadow problems:
In file included from ../../hw/arm/smmuv3.c:34:
../../hw/arm/smmuv3.c: In function ‘smmuv3_range_inval’:
../../hw/arm/smmuv3-internal.h:334:22: warning: declaration of ‘addr’ shadows a previous local [-Wshadow=compatible-local]
334 | uint64_t addr = high << 32 | (low << 12); \
| ^~~~
../../hw/arm/smmuv3.c:1104:28: note: in expansion of macro ‘CMD_ADDR’
1104 | dma_addr_t end, addr = CMD_ADDR(cmd);
| ^~~~~~~~
../../hw/arm/smmuv3.c:1104:21: note: shadowed declaration is here
1104 | dma_addr_t end, addr = CMD_ADDR(cmd);
| ^~~~
so convert it too.
CD_TTB has neither problem, but it is the only other macro in
the file that uses this pattern, so we convert it also for
consistency's sake.
We use extract64() rather than extract32() to avoid having
to explicitly cast the result to uint64_t.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230922152944.3583438-5-peter.maydell@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Avoid shadowing a variable in smmuv3_notify_iova():
../../hw/arm/smmuv3.c: In function ‘smmuv3_notify_iova’:
../../hw/arm/smmuv3.c:1043:23: warning: declaration of ‘event’ shadows a previous local [-Wshadow=local]
1043 | SMMUEventInfo event = {.inval_ste_allowed = true};
| ^~~~~
../../hw/arm/smmuv3.c:1038:19: note: shadowed declaration is here
1038 | IOMMUTLBEvent event;
| ^~~~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230922152944.3583438-4-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Avoid shadowing a local variable in arm_sysctl_write():
../../hw/misc/arm_sysctl.c: In function ‘arm_sysctl_write’:
../../hw/misc/arm_sysctl.c:537:26: warning: declaration of ‘val’ shadows a parameter [-Wshadow=local]
537 | uint32_t val;
| ^~~
../../hw/misc/arm_sysctl.c:388:39: note: shadowed declaration is here
388 | uint64_t val, unsigned size)
| ~~~~~~~~~^~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230922152944.3583438-3-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Avoid shadowing a local variable in do_process_its_cmd():
../../hw/intc/arm_gicv3_its.c:548:17: warning: declaration of ‘ite’ shadows a previous local [-Wshadow=compatible-local]
548 | ITEntry ite = {};
| ^~~
../../hw/intc/arm_gicv3_its.c:518:13: note: shadowed declaration is here
518 | ITEntry ite;
| ^~~
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230922152944.3583438-2-peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Code changes in acpi that addresses all compiler complaints coming from enabling
-Wshadow flags. Enabling -Wshadow catches cases of local variables shadowing
other local variables or parameters. These makes the code confusing and/or adds
bugs that are difficult to catch. See also
Subject: Help wanted for enabling -Wshadow=local
Message-Id: <87r0mqlf9x.fsf@pond.sub.org>
https://lore.kernel.org/qemu-devel/87r0mqlf9x.fsf@pond.sub.org
The code is tested to build with and without the flag turned on.
CC: Markus Armbruster <armbru@redhat.com>
CC: Philippe Mathieu-Daude <philmd@linaro.org>
CC: mst@redhat.com
CC: imammedo@redhat.com
Signed-off-by: Ani Sinha <anisinha@redhat.com>
Message-ID: <20230922124203.127110-1-anisinha@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
[Commit message tweaked]
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Rename SysBusDevice variable to avoid this warning :
../hw/ppc/spapr_pci.c: In function ‘spapr_phb_realize’:
../hw/ppc/spapr_pci.c:1872:24: warning: declaration of ‘s’ shadows a previous local [-Wshadow=local]
1872 | SpaprPhbState *s;
| ^
../hw/ppc/spapr_pci.c:1829:19: note: shadowed declaration is here
1829 | SysBusDevice *s = SYS_BUS_DEVICE(dev);
| ^
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230918145850.241074-8-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Remove extra 'drc_index' variable to avoid this warning :
../hw/ppc/spapr_drc.c: In function ‘rtas_ibm_configure_connector’:
../hw/ppc/spapr_drc.c:1240:26: warning: declaration of ‘drc_index’ shadows a previous local [-Wshadow=compatible-local]
1240 | uint32_t drc_index = spapr_drc_index(drc);
| ^~~~~~~~~
../hw/ppc/spapr_drc.c:1155:14: note: shadowed declaration is here
1155 | uint32_t drc_index;
| ^~~~~~~~~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230918145850.241074-7-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Remove extra 'i' variable to fix this warning :
../hw/ppc/spapr.c: In function ‘spapr_init_cpus’:
../hw/ppc/spapr.c:2668:13: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
2668 | int i;
| ^
../hw/ppc/spapr.c:2645:9: note: shadowed declaration is here
2645 | int i;
| ^
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230918145850.241074-5-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Introduce a helper routine defining one CPU device node to fix this
warning :
../hw/ppc/spapr.c: In function ‘spapr_dt_cpus’:
../hw/ppc/spapr.c:812:19: warning: declaration of ‘cs’ shadows a previous local [-Wshadow=compatible-local]
812 | CPUState *cs = rev[i];
| ^~
../hw/ppc/spapr.c:786:15: note: shadowed declaration is here
786 | CPUState *cs;
| ^~
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-ID: <20230918145850.241074-4-clg@kaod.org>
Reviewed-by: Harsh Prateek Bora <harshpb@linux.ibm.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fix:
hw/intc/openpic.c: In function ‘openpic_gbl_write’:
hw/intc/openpic.c:614:17: warning: declaration of ‘idx’ shadows a previous local [-Wshadow=compatible-local]
614 | int idx;
| ^~~
hw/intc/openpic.c:568:9: note: shadowed declaration is here
568 | int idx;
| ^~~
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904162824.85385-3-philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fix:
hw/nios2/10m50_devboard.c: In function ‘nios2_10m50_ghrd_init’:
hw/nios2/10m50_devboard.c:101:22: warning: declaration of ‘dev’ shadows a previous local [-Wshadow=compatible-local]
101 | DeviceState *dev = qdev_new(TYPE_NIOS2_VIC);
| ^~~
hw/nios2/10m50_devboard.c:60:18: note: shadowed declaration is here
60 | DeviceState *dev;
| ^~~
hw/nios2/10m50_devboard.c:110:18: warning: declaration of ‘i’ shadows a previous local [-Wshadow=compatible-local]
110 | for (int i = 0; i < 32; i++) {
| ^
hw/nios2/10m50_devboard.c:67:9: note: shadowed declaration is here
67 | int i;
| ^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904161235.84651-15-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fix:
hw/m68k/virt.c:263:13: error: declaration shadows a local variable [-Werror,-Wshadow]
BOOTINFOSTR(param_ptr, BI_COMMAND_LINE,
^
hw/m68k/bootinfo.h:47:13: note: expanded from macro 'BOOTINFOSTR'
int i; \
^
hw/m68k/virt.c:130:9: note: previous declaration is here
int i;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20230904161235.84651-13-philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fix:
hw/arm/allwinner-r40.c:412:14: error: declaration shadows a local variable [-Werror,-Wshadow]
for (int i = 0; i < AW_R40_NUM_MMCS; i++) {
^
hw/arm/allwinner-r40.c:299:14: note: previous declaration is here
unsigned i;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230904161235.84651-10-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Fix:
hw/arm/virt.c:821:22: error: declaration shadows a local variable [-Werror,-Wshadow]
qemu_irq irq = qdev_get_gpio_in(vms->gic,
^
hw/arm/virt.c:803:13: note: previous declaration is here
int irq;
^
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-ID: <20230904161235.84651-9-philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Local variables shadowing other local variables or parameters make the
code needlessly hard to understand. Tracked down with -Wshadow=local.
Clean up: delete inner declarations when they are actually redundant,
else rename variables.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Anthony PERARD <anthony.perard@citrix.com>
Acked-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20230921121312.1301864-7-armbru@redhat.com>
We are doing things like
nb_sectors /= (s->qdev.blocksize / BDRV_SECTOR_SIZE);
in the code here (e.g. in scsi_disk_emulate_mode_sense()), so if
the blocksize is smaller than BDRV_SECTOR_SIZE (=512), this crashes
with a division by 0 exception. Thus disallow block sizes of 256
bytes to avoid this situation.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1813
CVE: 2023-42467
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20230925091854.49198-1-thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
These are the last users of the 128K SeaBIOS blob in the i440FX family.
Removing them allows us to drop PCI support from the 128K blob,
thus making it easier to update SeaBIOS to newer versions.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* Simplify the NIC init code of the jazz machine a little bit
* Minor qtest and avocado fixes
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Merge tag 'pull-request-2023-09-25' of https://gitlab.com/thuth/qemu into staging
* Make keyutils independent from keyring in meson.build
* Simplify the NIC init code of the jazz machine a little bit
* Minor qtest and avocado fixes
# -----BEGIN PGP SIGNATURE-----
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# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 25 Sep 2023 04:58:48 EDT
# 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-2023-09-25' of https://gitlab.com/thuth/qemu:
tests/avocado: fix waiting for vm shutdown in replay_linux
hw/mips/jazz: Simplify the NIC setup code
hw/mips/jazz: Move the NIC init code into a separate function
tests/qtest/netdev-socket: Do not test multicast on Darwin
tests/qtest/m48t59-test: Silence compiler warning with -Wshadow
tests/qtest/netdev-socket: Raise connection timeout to 120 seconds
meson.build: Make keyutils independent from keyring
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The for-loop does not make much sense here - it is always left after
the first iteration, so we can also check for nb_nics == 1 instead
which is way easier to understand.
Also, the checks for nd->model are superfluous since the code in
mips_jazz_init_net() calls qemu_check_nic_model() that already
takes care of this (i.e. initializing nd->model if it has not been
set yet, and checking whether it is the "help" option or the
supported NIC model).
Message-ID: <20230913160922.355640-3-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
The mips_jazz_init() function is already quite big, so moving
away some code here can help to make it more understandable.
Additionally, by moving this code into a separate function, the
next patch (that will refactor the for-loop around the NIC init
code) will be much shorter and easier to understand.
Message-ID: <20230913160922.355640-2-thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
There was no way to set this and we need that for it to be able to properly
initialise.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Message-ID: <16963256573fcbfa7720aa2fd000ba74a4055222.1650874791.git.mkletzan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This will be used in future commit.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <be1bf295b3c6a3dee272b4b4e8115e37c2a772b5.1650874791.git.mkletzan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
No return values are used anywhere, so switch the functions to be void
and add support for error reporting using errp for use in next patches.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <cd1df4ad2a6fae969c4a02a77955c4a8c0d430b6.1650874791.git.mkletzan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This deduplicates several lines and will make future changes more
concise.
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-ID: <1d75877cf4cc2a38f87633ff16f9fea3e1bb0c03.1650874791.git.mkletzan@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Armv8.1+ cpus have Virtual Host Extension (VHE) which added non-secure
EL2 virtual timer.
This change adds it to fullfil Arm BSA (Base System Architecture)
requirements.
Signed-off-by: Marcin Juszkiewicz <marcin.juszkiewicz@linaro.org>
Message-id: 20230913140610.214893-2-marcin.juszkiewicz@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Just like d7ef5e16a1 sets SCR_EL3.HXEn for FEAT_HCX, this commit
handles SCR_EL3.FGTEn for FEAT_FGT:
When we direct boot a kernel on a CPU which emulates EL3, we need to
set up the EL3 system registers as the Linux kernel documentation
specifies:
https://www.kernel.org/doc/Documentation/arm64/booting.rst
> For CPUs with the Fine Grained Traps (FEAT_FGT) extension present:
> - If EL3 is present and the kernel is entered at EL2:
> - SCR_EL3.FGTEn (bit 27) must be initialised to 0b1.
Cc: qemu-stable@nongnu.org
Signed-off-by: Fabian Vogt <fvogt@suse.de>
Message-id: 4831384.GXAFRqVoOG@linux-e202.suse.de
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
- Graph locking part 4 (node management)
- qemu-img map: report compressed data blocks
- block-backend: process I/O in the current AioContext
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging
Block layer patches
- Graph locking part 4 (node management)
- qemu-img map: report compressed data blocks
- block-backend: process I/O in the current AioContext
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# gpg: Signature made Wed 20 Sep 2023 12:31:49 EDT
# gpg: using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg: issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74 56FE 7F09 B272 C88F 2FD6
* tag 'for-upstream' of https://repo.or.cz/qemu/kevin: (28 commits)
block: mark aio_poll as non-coroutine
block-backend: process zoned requests in the current AioContext
block-backend: process I/O in the current AioContext
test-bdrv-drain: avoid race with BH in IOThread drain test
block: remove AIOCBInfo->get_aio_context()
qemu-img: map: report compressed data blocks
block: add BDRV_BLOCK_COMPRESSED flag for bdrv_block_status()
block: Mark bdrv_add/del_child() and caller GRAPH_WRLOCK
block: Mark bdrv_unref_child() GRAPH_WRLOCK
block: Mark bdrv_root_unref_child() GRAPH_WRLOCK
block: Take graph rdlock in bdrv_change_aio_context()
block: Take graph rdlock in bdrv_drop_intermediate()
block: Mark bdrv_parent_cb_change_media() GRAPH_RDLOCK
block: Mark bdrv_child_perm() GRAPH_RDLOCK
block: Mark bdrv_get_cumulative_perm() and callers GRAPH_RDLOCK
block: Mark bdrv_parent_perms_conflict() and callers GRAPH_RDLOCK
block: Mark bdrv_attach_child() GRAPH_WRLOCK
block: Call transaction callbacks with lock held
block: Mark bdrv_attach_child_common() GRAPH_WRLOCK
block: Mark bdrv_replace_child_tran() GRAPH_WRLOCK
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
- Fix for file-posix's zoning code crashing on I/O errors
- Throttling refactoring
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Merge tag 'pull-block-2023-09-01' of https://gitlab.com/hreitz/qemu into staging
Block patches
- Fix for file-posix's zoning code crashing on I/O errors
- Throttling refactoring
# -----BEGIN PGP SIGNATURE-----
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# gpg: Signature made Fri 01 Sep 2023 04:11:46 EDT
# gpg: using RSA key CB62D7A0EE3829E45F004D34A1FA40D098019CDF
# gpg: issuer "hreitz@redhat.com"
# gpg: Good signature from "Hanna Reitz <hreitz@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: CB62 D7A0 EE38 29E4 5F00 4D34 A1FA 40D0 9801 9CDF
* tag 'pull-block-2023-09-01' of https://gitlab.com/hreitz/qemu:
tests/file-io-error: New test
file-posix: Simplify raw_co_prw's 'out' zone code
file-posix: Fix zone update in I/O error path
file-posix: Check bs->bl.zoned for zone info
file-posix: Clear bs->bl.zoned on error
block/throttle-groups: Use ThrottleDirection instread of bool is_write
fsdev: Use ThrottleDirection instread of bool is_write
throttle: use THROTTLE_MAX/ARRAY_SIZE for hard code
throttle: use enum ThrottleDirection instead of bool is_write
cryptodev: use NULL throttle timer cb for read direction
test-throttle: test read only and write only
throttle: support read-only and write-only
test-throttle: use enum ThrottleDirection
throttle: introduce enum ThrottleDirection
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This has been missing from the start. Assume it should match
with cxl/cxl-component-utils.c as both were part of early
postings from Ben.
Reported-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Acked-by: Ira Weiny <ira.weiny@intel.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
According to ACPI spec 6.5 5.2.28.4 System Locality Latency and Bandwidth
Information Structure, if the "Entry Base Unit" is 1024 for BW and the
matrix entry has the value of 100, the BW is 100 GB/s. So the
entry_base_unit should be changed from 1000 to 1024 given the comment notes
it's 16GB/s for .latency_bandwidth.
Fixes: 882877fc35 ("hw/pci-bridge/cxl-upstream: Add a CDAT table access DOE")
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Allocate targets and targets[n] resources when all sanity checks are
passed to avoid memory leaks.
Cc: qemu-stable@nongnu.org
Suggested-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Li Zhijian <lizhijian@cn.fujitsu.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
- The comment is incorrectly indented / formatted.
- The comment states a 8MB limit, even though the code enforces a 16MB
limit.
Both of these warts come from commit 0657c657eb ("hw/i386/pc: add max
combined fw size as machine configuration option", 2020-12-09); clean them
up.
Arguably, it's also better to be consistent with the binary units (such as
"MiB") that QEMU uses nowadays.
Cc: "Michael S. Tsirkin" <mst@redhat.com> (supporter:PC)
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com> (supporter:PC)
Cc: Paolo Bonzini <pbonzini@redhat.com> (maintainer:X86 TCG CPUs)
Cc: Richard Henderson <richard.henderson@linaro.org> (maintainer:X86 TCG CPUs)
Cc: Eduardo Habkost <eduardo@habkost.net> (maintainer:X86 TCG CPUs)
Cc: qemu-trivial@nongnu.org
Fixes: 0657c657eb
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
All 32-bit hppa CPUs allow a fixed number of TLB entries to have a
different page size than the default 4k.
Those are called "Block-TLBs" and are created at startup by the
operating system and managed by the firmware of hppa machines
through the firmware PDC_BLOCK_TLB call.
This patchset adds the necessary glue to SeaBIOS-hppa and
qemu to allow up to 16 BTLB entries in the emulation.
Two patches from Mikulas Patocka fix signal delivery issues
in linux-user on hppa.
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Merge tag 'hppa-btlb-pull-request' of https://github.com/hdeller/qemu-hppa into staging
Block-TLB support and linux-user fixes for hppa target
All 32-bit hppa CPUs allow a fixed number of TLB entries to have a
different page size than the default 4k.
Those are called "Block-TLBs" and are created at startup by the
operating system and managed by the firmware of hppa machines
through the firmware PDC_BLOCK_TLB call.
This patchset adds the necessary glue to SeaBIOS-hppa and
qemu to allow up to 16 BTLB entries in the emulation.
Two patches from Mikulas Patocka fix signal delivery issues
in linux-user on hppa.
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# gpg: Signature made Tue 19 Sep 2023 15:17:39 EDT
# gpg: using EDDSA key BCE9123E1AD29F07C049BBDEF712B510A23A0F5F
# gpg: Good signature from "Helge Deller <deller@gmx.de>" [unknown]
# gpg: aka "Helge Deller <deller@kernel.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: 4544 8228 2CD9 10DB EF3D 25F8 3E5F 3D04 A7A2 4603
# Subkey fingerprint: BCE9 123E 1AD2 9F07 C049 BBDE F712 B510 A23A 0F5F
* tag 'hppa-btlb-pull-request' of https://github.com/hdeller/qemu-hppa:
linux-user/hppa: lock both words of function descriptor
linux-user/hppa: clear the PSW 'N' bit when delivering signals
target/hppa: Wire up diag instruction to support BTLB
target/hppa: Extract diagnose immediate value
target/hppa: Add BTLB support to hppa TLB functions
target/hppa: Report and clear BTLBs via fw_cfg at startup
target/hppa: Allow up to 16 BTLB entries
target/hppa: Update to SeaBIOS-hppa version 9
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
The synchronous bdrv_aio_cancel() function needs the acb's AioContext so
it can call aio_poll() to wait for cancellation.
It turns out that all users run under the BQL in the main AioContext, so
this callback is not needed.
Remove the callback, mark bdrv_aio_cancel() GLOBAL_STATE_CODE just like
its blk_aio_cancel() caller, and poll the main loop AioContext.
The purpose of this cleanup is to identify bdrv_aio_cancel() as an API
that does not work with the multi-queue block layer.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230912231037.826804-2-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
"Host Memory Backends" and "Memory devices" queue ("mem"):
- Support and document VM templating with R/O files using a new "rom"
parameter for memory-backend-file
- Some cleanups and fixes around NVDIMMs and R/O file handling for guest
RAM
- Optimize ioeventfd updates by skipping address spaces that are not
applicable
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Merge tag 'mem-2023-09-19' of https://github.com/davidhildenbrand/qemu into staging
Hi,
"Host Memory Backends" and "Memory devices" queue ("mem"):
- Support and document VM templating with R/O files using a new "rom"
parameter for memory-backend-file
- Some cleanups and fixes around NVDIMMs and R/O file handling for guest
RAM
- Optimize ioeventfd updates by skipping address spaces that are not
applicable
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# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 19 Sep 2023 06:25:45 EDT
# gpg: using RSA key 1BD9CAAD735C4C3A460DFCCA4DDE10F700FF835A
# gpg: issuer "david@redhat.com"
# gpg: Good signature from "David Hildenbrand <david@redhat.com>" [unknown]
# gpg: aka "David Hildenbrand <davidhildenbrand@gmail.com>" [full]
# gpg: aka "David Hildenbrand <hildenbr@in.tum.de>" [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: 1BD9 CAAD 735C 4C3A 460D FCCA 4DDE 10F7 00FF 835A
* tag 'mem-2023-09-19' of https://github.com/davidhildenbrand/qemu:
memory: avoid updating ioeventfds for some address_space
machine: Improve error message when using default RAM backend id
softmmu/physmem: Hint that "readonly=on,rom=off" exists when opening file R/W for private mapping fails
docs: Start documenting VM templating
docs: Don't mention "-mem-path" in multi-process.rst
softmmu/physmem: Never return directories from file_ram_open()
softmmu/physmem: Fail creation of new files in file_ram_open() with readonly=true
softmmu/physmem: Bail out early in ram_block_discard_range() with readonly files
softmmu/physmem: Remap with proper protection in qemu_ram_remap()
backends/hostmem-file: Add "rom" property to support VM templating with R/O files
softmmu/physmem: Distinguish between file access mode and mmap protection
nvdimm: Reject writing label data to ROM instead of crashing QEMU
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
In this short queue we're making two important changes:
- Nicholas Piggin is now the qemu-ppc maintainer. Cédric Le Goater and
Daniel Barboza will act as backup during Nick's transition to this new
role.
- Support for NVIDIA V100 GPU with NVLink2 is dropped from qemu-ppc.
Linux removed the same support back in 5.13, we're following suit now.
A xive Coverity fix is also included.
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Merge tag 'pull-ppc-20230918' of https://gitlab.com/danielhb/qemu into staging
ppc patch queue for 2023-09-18:
In this short queue we're making two important changes:
- Nicholas Piggin is now the qemu-ppc maintainer. Cédric Le Goater and
Daniel Barboza will act as backup during Nick's transition to this new
role.
- Support for NVIDIA V100 GPU with NVLink2 is dropped from qemu-ppc.
Linux removed the same support back in 5.13, we're following suit now.
A xive Coverity fix is also included.
# -----BEGIN PGP SIGNATURE-----
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# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 18 Sep 2023 09:24:44 EDT
# gpg: using EDDSA key 17EBFF9923D01800AF2838193CD9CA96DE033164
# gpg: issuer "danielhb413@gmail.com"
# gpg: Good signature from "Daniel Henrique Barboza <danielhb413@gmail.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: 17EB FF99 23D0 1800 AF28 3819 3CD9 CA96 DE03 3164
* tag 'pull-ppc-20230918' of https://gitlab.com/danielhb/qemu:
spapr: Remove support for NVIDIA V100 GPU with NVLink2
ppc/xive: Fix uint32_t overflow
MAINTAINERS: Nick Piggin PPC maintainer, other PPC changes
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
For migration purposes, users might want to reuse the default RAM
backend id, but specify a different memory backend.
For example, to reuse "pc.ram" on q35, one has to set
-machine q35,memory-backend=pc.ram
Only then, can a memory backend with the id "pc.ram" be created
manually.
Let's improve the error message by improving the hint. Use
error_append_hint() -- which in turn requires ERRP_GUARD().
Message-ID: <20230906120503.359863-12-david@redhat.com>
Suggested-by: ThinerLogoer <logoerthiner1@163.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Mario Casquero <mcasquer@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Currently, when using a true R/O NVDIMM (ROM memory backend) with a label
area, the VM can easily crash QEMU by trying to write to the label area,
because the ROM memory is mmap'ed without PROT_WRITE.
[root@vm-0 ~]# ndctl disable-region region0
disabled 1 region
[root@vm-0 ~]# ndctl zero-labels nmem0
-> QEMU segfaults
Let's remember whether we have a ROM memory backend and properly
reject the write request:
[root@vm-0 ~]# ndctl disable-region region0
disabled 1 region
[root@vm-0 ~]# ndctl zero-labels nmem0
zeroed 0 nmem
In comparison, on a system with a R/W NVDIMM:
[root@vm-0 ~]# ndctl disable-region region0
disabled 1 region
[root@vm-0 ~]# ndctl zero-labels nmem0
zeroed 1 nmem
For ACPI, just return "unsupported", like if no label exists. For spapr,
return "H_P2", similar to when no label area exists.
Could we rely on the "unarmed" property? Maybe, but it looks cleaner to
only disallow what certainly cannot work.
After all "unarmed=on" primarily means: cannot accept persistent writes. In
theory, there might be setups where devices with "unarmed=on" set could
be used to host non-persistent data (temporary files, system RAM, ...); for
example, in Linux, admins can overwrite the "readonly" setting and still
write to the device -- which will work as long as we're not using ROM.
Allowing writing label data in such configurations can make sense.
Message-ID: <20230906120503.359863-2-david@redhat.com>
Fixes: dbd730e859 ("nvdimm: check -object memory-backend-file, readonly=on option")
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
NVLink2 support was removed from the PPC PowerNV platform and VFIO in
Linux 5.13 with commits :
562d1e207d32 ("powerpc/powernv: remove the nvlink support")
b392a1989170 ("vfio/pci: remove vfio_pci_nvlink2")
This was 2.5 years ago. Do the same in QEMU with a revert of commit
ec132efaa8 ("spapr: Support NVIDIA V100 GPU with NVLink2"). Some
adjustements are required on the NUMA part.
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Acked-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Cédric Le Goater <clg@redhat.com>
Message-ID: <20230918091717.149950-1-clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
As reported by Coverity, "idx << xive->pc_shift" is evaluated using
32-bit arithmetic, and then used in a context expecting a "uint64_t".
Add a uint64_t cast.
Fixes: Coverity CID 1519049
Fixes: b68147b7a5 ("ppc/xive: Add support for the PC MMIOs")
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Frederic Barrat <fbarrat@linux.ibm.com>
Message-ID: <20230914154650.222111-1-clg@kaod.org>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Replace an on-stack variable length array in of_dpa_ig() with
a g_autofree heap allocation.
The codebase has very few VLAs, and if we can get rid of them all we
can make the compiler error on new additions. This is a defensive
measure against security bugs where an on-stack dynamic allocation
isn't correctly size-checked (e.g. CVE-2021-3527).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Francisco Iglesias <frasse.iglesias@gmail.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In fill_rx_bd() we create a variable length array of size
etsec->rx_padding. In fact we know that this will never be
larger than 64 bytes, because rx_padding is set in rx_init_frame()
in a way that ensures it is only that large. Use a fixed sized
array and assert that it is big enough.
Since padd[] is now potentially rather larger than the actual
padding required, adjust the memset() we do on it to match the
size that we write with cpu_physical_memory_write(), rather than
clearing the entire array.
The codebase has very few VLAs, and if we can get rid of them all we
can make the compiler error on new additions. This is a defensive
measure against security bugs where an on-stack dynamic allocation
isn't correctly size-checked (e.g. CVE-2021-3527).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
