Write operation with R32 (orig_a0) and R34 (CSR_BADV) is discarded on
gdbstub implementation for LoongArch system. And return value should
be register size rather than 0, since it is used to calculate offset of
next register such as R33 (PC) in function handle_write_all_regs().
Cc: qemu-stable@nongnu.org
Fixes: ca61e75071c6 ("target/loongarch: Add gdb support.")
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Reviewed-by: Bibo Mao <maobibo@loongson.cn>
When the KVM_REG_LOONGARCH_VCPU_RESET command word
is sent to the kernel through the kvm_set_one_reg interface,
the parameter source needs to be a legal address,
otherwise the kernel will return an error and the command word
will fail to be sent.
Signed-off-by: Xianglai Li <lixianglai@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Currently we handle the 'dumpdtb' machine sub-option ad-hoc in every
board model that has an FDT. It's up to the board code to make sure
it calls qemu_fdt_dumpdtb() in the right place.
This means we're inconsistent and often just ignore the user's
command line argument:
* if the board doesn't have an FDT at all
* if the board supports FDT, but there happens not to be one
present (usually because of a missing -fdt option)
This isn't very helpful because it gives the user no clue why their
option was ignored.
However, in order to support the QMP/HMP dumpdtb commands we require
now that every FDT machine stores a pointer to the FDT in
MachineState::fdt. This means we can handle -machine dumpdtb
centrally by calling the qmp_dumpdtb() function, unifying its
handling with the QMP/HMP commands. All the board code calls to
qemu_fdt_dumpdtb() can then be removed.
For this commit we retain the existing behaviour that if there
is no FDT we silently ignore the -machine dumpdtb option.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
The boston machine doesn't set MachineState::fdt to the DTB blob that
it has loaded or created, which means that the QMP/HMP dumpdtb
monitor commands don't work.
Setting MachineState::fdt is easy in the non-FIT codepath: we can
simply do so immediately before loading the DTB into guest memory.
The FIT codepath is a bit more awkward as currently the FIT loader
throws away the memory that the FDT was in after it loads it into
guest memory. So we add a void *pfdt argument to load_fit() for it
to store the FDT pointer into.
There is some readjustment required of the pointer handling in
loader-fit.c, so that it applies 'const' only where it should (e.g.
the data pointer we get back from fdt_getprop() is const, because
it's into the middle of the input FDT data, but the pointer that
fit_load_image_alloc() should not be const, because it's freshly
allocated memory that the caller can change if it likes).
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250206151214.2947842-5-peter.maydell@linaro.org
The function boston_fdt_filter() can return NULL on errors (in which
case it will print an error message). When we call this from the
non-FIT-image codepath, we aren't checking the return value, so we
will plough on with a NULL pointer, and segfault in fdt_totalsize().
Check for errors here.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250206151214.2947842-4-peter.maydell@linaro.org
The openrisc machines don't set MachineState::fdt to point to their
DTB blob. This means that although the command line '-machine
dumpdtb=file.dtb' option works, the equivalent QMP and HMP monitor
commands do not, but instead produce the error "This machine doesn't
have a FDT".
Set MachineState::fdt in openrisc_load_fdt(), when we write it to
guest memory.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250206151214.2947842-3-peter.maydell@linaro.org
In hmp_dumpdtb(), we print a message when the command succeeds. This
message is missing the trailing \n, so the HMP command prompt is
printed immediately after it. We also weren't capitalizing 'DTB', or
quoting the filename in the message. Fix these nits.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20250206151214.2947842-2-peter.maydell@linaro.org
The MMIO region size required to support virtualized environments with
large PCI BAR regions can exceed the hardcoded limit configured in QEMU.
For example, a VM with multiple NVIDIA Grace-Hopper GPUs passed through
requires more MMIO memory than the amount provided by VIRT_HIGH_PCIE_MMIO
(currently 512GB). Instead of updating VIRT_HIGH_PCIE_MMIO, introduce a
new parameter, highmem-mmio-size, that specifies the MMIO size required
to support the VM configuration.
Example usage with 1TB MMIO region size:
-machine virt,gic-version=3,highmem-mmio-size=1T
Signed-off-by: Matthew R. Ochs <mochs@nvidia.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Message-id: 20250221145419.1281890-1-mochs@nvidia.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
When we fill in the SMMUEventInfo for SMMU_EVT_F_CD_FETCH we write
the address into the f_ste_fetch member of the union, but then when
we come to read it back in smmuv3_record_event() we will (correctly)
be using the f_cd_fetch member.
This is more like a cosmetics fix since the f_cd_fetch and f_ste_fetch are
basically the same field since they are in the exact same union with exact
same type, but it's conceptually wrong. Use the correct union member.
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Message-id: 20250220213832.80289-1-nicolinc@nvidia.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Refine documentation for the hub device, specify the maximum.
Signed-off-by: Roman Penyaev <r.peniaev@gmail.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Markus Armbruster <armbru@redhat.com>
Cc: qemu-devel@nongnu.org
Message-ID: <20250219090607.559887-1-r.peniaev@gmail.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Have the MicroblazeMachine class being common to both
MicroblazeBigEndianMachine and MicroblazeLittleEndianMachine
classes. Move the xmaton and ballerina tests to the parent class.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20250212123659.52764-11-philmd@linaro.org>
[thuth: Add missing ASSET statements to the leaf classes]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Features:
SR-IOV emulation for pci
virtio-mem-pci support for s390
interleave support for cxl
big endian support for vdpa svq
new QAPI events for vhost-user
Also vIOMMU reset order fixups are in.
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAme4b8sPHG1zdEByZWRo
YXQuY29tAAoJECgfDbjSjVRpHKcIAKPJsVqPdda2dJ7b7FdyRT0Q+uwezXqaGHd4
7Lzih1wsxYNkwIAyPtEb76/21qiS7BluqlUCfCB66R9xWjP5/KfvAFj4/r4AEduE
fxAgYzotNpv55zcRbcflMyvQ42WGiZZHC+o5Lp7vDXUP3pIyHrl0Ydh5WmcD+hwS
BjXvda58TirQpPJ7rUL+sSfLih17zQkkDcfv5/AgorDy1wK09RBKwMx/gq7wG8yJ
twy8eBY2CmfmFD7eTM+EKqBD2T0kwLEeLfS/F/tl5Fyg6lAiYgYtCbGLpAmWErsg
XZvfZmwqL7CNzWexGvPFnnLyqwC33WUP0k0kT88Y5wh3/h98blw=
=tej8
-----END PGP SIGNATURE-----
Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging
virtio,pc,pci: features, fixes, cleanups
Features:
SR-IOV emulation for pci
virtio-mem-pci support for s390
interleave support for cxl
big endian support for vdpa svq
new QAPI events for vhost-user
Also vIOMMU reset order fixups are in.
Fixes, cleanups all over the place.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
# -----BEGIN PGP SIGNATURE-----
#
# iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAme4b8sPHG1zdEByZWRo
# YXQuY29tAAoJECgfDbjSjVRpHKcIAKPJsVqPdda2dJ7b7FdyRT0Q+uwezXqaGHd4
# 7Lzih1wsxYNkwIAyPtEb76/21qiS7BluqlUCfCB66R9xWjP5/KfvAFj4/r4AEduE
# fxAgYzotNpv55zcRbcflMyvQ42WGiZZHC+o5Lp7vDXUP3pIyHrl0Ydh5WmcD+hwS
# BjXvda58TirQpPJ7rUL+sSfLih17zQkkDcfv5/AgorDy1wK09RBKwMx/gq7wG8yJ
# twy8eBY2CmfmFD7eTM+EKqBD2T0kwLEeLfS/F/tl5Fyg6lAiYgYtCbGLpAmWErsg
# XZvfZmwqL7CNzWexGvPFnnLyqwC33WUP0k0kT88Y5wh3/h98blw=
# =tej8
# -----END PGP SIGNATURE-----
# gpg: Signature made Fri 21 Feb 2025 20:21:31 HKT
# 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: (41 commits)
docs/devel/reset: Document reset expectations for DMA and IOMMU
hw/vfio/common: Add a trace point in vfio_reset_handler
hw/arm/smmuv3: Move reset to exit phase
hw/i386/intel-iommu: Migrate to 3-phase reset
hw/virtio/virtio-iommu: Migrate to 3-phase reset
vhost-user-snd: correct the calculation of config_size
net: vhost-user: add QAPI events to report connection state
hw/virtio/virtio-nsm: Respond with correct length
vdpa: Fix endian bugs in shadow virtqueue
MAINTAINERS: add more files to `vhost`
cryptodev/vhost: allocate CryptoDevBackendVhost using g_mem0()
vhost-iova-tree: Update documentation
vhost-iova-tree, svq: Implement GPA->IOVA & partial IOVA->HVA trees
vhost-iova-tree: Implement an IOVA-only tree
amd_iommu: Use correct bitmask to set capability BAR
amd_iommu: Use correct DTE field for interrupt passthrough
hw/virtio: reset virtio balloon stats on machine reset
mem/cxl_type3: support 3, 6, 12 and 16 interleave ways
hw/mem/cxl_type3: Ensure errp is set on realization failure
hw/mem/cxl_type3: Fix special_ops memory leak on msix_init_exclusive_bar() failure
...
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
To avoid any translation faults, the IOMMUs are expected to be
reset after the devices they protect. Document that we expect
DMA requests to be stopped during the 'enter' or 'hold' phase
while IOMMUs should be reset during the 'exit' phase.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20250218182737.76722-6-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
To ease the debug of reset sequence, let's add a trace point
in vfio_reset_handler()
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20250218182737.76722-5-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently the iommu may be reset before the devices
it protects. For example this happens with virtio-scsi-pci.
when system_reset is issued from qmp monitor: spurious
"virtio: zero sized buffers are not allowed" warnings can
be observed. This happens because outstanding DMA requests
are still happening while the SMMU gets reset.
This can also happen with VFIO devices. In that case
spurious DMA translation faults can be observed on host.
Make sure the SMMU is reset in the 'exit' phase after
all DMA capable devices have been reset during the 'enter'
or 'hold' phase.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20250218182737.76722-4-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently the IOMMU may be reset before the devices
it protects. For example this happens with virtio devices
but also with VFIO devices. In this latter case this
produces spurious translation faults on host.
Let's use 3-phase reset mechanism and reset the IOMMU on
exit phase after all DMA capable devices have been reset
on 'enter' or 'hold' phase.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Zhenzhong Duan <zhenzhong.duan@intel.com>
Message-Id: <20250218182737.76722-3-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Currently the iommu may be reset before the devices
it protects. For example this happens with virtio-net.
Let's use 3-phase reset mechanism and reset the IOMMU on
exit phase after all DMA capable devices have been
reset during the 'enter' or 'hold' phase.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Zhenzhong Duan <zhenzhong.duan@intel.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20250218182737.76722-2-eric.auger@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Use virtio_get_config_size() rather than sizeof(struct
virtio_snd_config) for the config_size in the vhost-user-snd frontend.
The frontend shall rely on device features for the size of the device
configuration space. The presence of `controls` in the config space
depends on VIRTIO_SND_F_CTLS according to the specification (v1.3):
`
5.14.4 Device Configuration Layout
...
controls
(driver-read-only) indicates a total number of all available control
elements if VIRTIO_SND_F_CTLS has been negotiated.
`
This fixes an issue introduced by commit ab0c7fb2 ("linux-headers:
update to current kvm/next") in which the optional field `controls` is
added to the virtio_snd_config structure. This breaks vhost-user-device
backends that do not implement the `controls` field.
Fixes: ab0c7fb22b ("linux-headers: update to current kvm/next")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2805
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Suggested-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Matias Ezequiel Vara Larsen <mvaralar@redhat.com>
Message-Id: <20250217131255.829892-1-mvaralar@redhat.com>
Cc: qemu-stable@nongnu.org
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Dorinda Bassey <dbassey@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The netdev reports NETDEV_VHOST_USER_CONNECTED event when
the chardev is connected, and NETDEV_VHOST_USER_DISCONNECTED
when it is disconnected.
The NETDEV_VHOST_USER_CONNECTED event includes the chardev id.
This allows a system manager like libvirt to detect when the server
fails.
For instance with passt:
{ 'execute': 'qmp_capabilities' }
{ "return": { } }
[killing passt here]
{ "timestamp": { "seconds": 1739538634, "microseconds": 920450 },
"event": "NETDEV_VHOST_USER_DISCONNECTED",
"data": { "netdev-id": "netdev0" } }
[automatic reconnection with reconnect-ms]
{ "timestamp": { "seconds": 1739538638, "microseconds": 354181 },
"event": "NETDEV_VHOST_USER_CONNECTED",
"data": { "netdev-id": "netdev0", "chardev-id": "chr0" } }
Tested-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20250217092550.1172055-1-lvivier@redhat.com>
Acked-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When we return a response packet from NSM, we need to indicate its
length according to the content of the response. Prior to this patch, we
returned the length of the source buffer, which may confuse guest code
that relies on the response size.
Fix it by returning the response payload size instead.
Fixes: bb154e3e0cc715 ("device/virtio-nsm: Support for Nitro Secure Module device")
Reported-by: Vikrant Garg <vikrant1garg@gmail.com>
Signed-off-by: Alexander Graf <graf@amazon.com>
Message-Id: <20250213114541.67515-1-graf@amazon.com>
Reviewed-by: Dorjoy Chowdhury <dorjoychy111@gmail.com>
Fixes: bb154e3e0cc715 ("device/virtio-nsm: Support for Nitro Secure Module device")<br>
Reported-by: Vikrant Garg <vikrant1garg@gmail.com>
Signed-off-by: Alexander Graf <graf@amazon.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Tested-by: Vikrant Garg <vikrant1garg@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
VDPA didn't work on a big-endian machine due to missing/incorrect
CPU<->LE data format conversions.
Signed-off-by: Konstantin Shkolnyy <kshk@linux.ibm.com>
Message-Id: <20250212164923.1971538-1-kshk@linux.ibm.com>
Fixes: 10857ec0ad ("vhost: Add VhostShadowVirtqueue")
Acked-by: Eugenio Pérez <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>
While sending a patch for backends/cryptodev-vhost.c I noticed that
Michael wasn`t in CC so I took a look at the files listed under `vhost`
and tried to fix it increasing the coverage by adding new files.
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20250211144259.117910-1-sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The function `vhost_dev_init()` expects the `struct vhost_dev`
(passed as a parameter) to be fully initialized. This is important
because some parts of the code check whether `vhost_dev->config_ops`
is NULL to determine if it has been set (e.g. later via
`vhost_dev_set_config_notifier`).
To ensure this initialization, it’s better to allocate the entire
`CryptoDevBackendVhost` structure (which includes `vhost_dev`) using
`g_mem0()`, following the same approach used for other vhost devices,
such as in `vhost_net_init()`.
Fixes: 042cea274c ("cryptodev: add vhost-user as a new cryptodev backend")
Cc: qemu-stable@nongnu.org
Reported-by: myluo24@m.fudan.edu.cn
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20250211135523.101203-1-sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Minor update to some of the documentation / comments in
hw/virtio/vhost-iova-tree.c.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Reviewed-by: Eugenio Pérez <eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20250217144936.3589907-4-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Creates and supports a GPA->IOVA tree and a partial IOVA->HVA tree by
splitting up guest-backed memory maps and host-only memory maps from the
full IOVA->HVA tree. That is, any guest-backed memory maps are now
stored in the GPA->IOVA tree and host-only memory maps stay in the
IOVA->HVA tree.
Also propagates the GPAs (in_addr/out_addr) of a VirtQueueElement to
vhost_svq_translate_addr() to translate GPAs to IOVAs via the GPA->IOVA
tree (when descriptors are backed by guest memory). For descriptors
backed by host-only memory, the existing partial SVQ IOVA->HVA tree is
used.
GPAs are unique in the guest's address space, ensuring unambiguous IOVA
translations. This avoids the issue where different GPAs map to the same
HVA, causing the original HVA->IOVA translation to potentially return an
IOVA associated with the wrong intended GPA.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20250217144936.3589907-3-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Creates and supports an IOVA-only tree to support a SVQ IOVA->HVA and
GPA->IOVA tree for host-only and guest-backed memory, respectively, in
the next patch.
The IOVA allocator still allocates an IOVA range but now adds this range
to the IOVA-only tree as well as to the full IOVA->HVA tree.
In the next patch, the full IOVA->HVA tree will be split into a partial
SVQ IOVA->HVA tree and a GPA->IOVA tree. The motivation behind having an
IOVA-only tree was to have a single tree that would keep track of all
allocated IOVA ranges between the partial SVQ IOVA->HVA and GPA->IOVA
trees.
Signed-off-by: Jonah Palmer <jonah.palmer@oracle.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Message-Id: <20250217144936.3589907-2-jonah.palmer@oracle.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
AMD IOMMU provides the base address of control registers through
IVRS table and PCI capability. Since this base address is of 64 bit,
use 32 bits mask (instead of 16 bits) to set BAR low and high.
Fixes: d29a09ca68 ("hw/i386: Introduce AMD IOMMU")
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Message-Id: <20250207045354.27329-3-sarunkod@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Interrupt passthrough is determine by the bits 191,190,187-184.
These bits are part of the 3rd quad word (i.e. index 2) in DTE. Hence
replace dte[3] by dte[2].
Fixes: b44159fe0 ("x86_iommu/amd: Add interrupt remap support when VAPIC is not enabled")
Signed-off-by: Sairaj Kodilkar <sarunkod@amd.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Message-Id: <20250207045354.27329-2-sarunkod@amd.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
When a machine is first booted, all virtio balloon stats are initialized
to their default value -1 (18446744073709551615 when represented as
unsigned).
They remain that way while the firmware is loading, and early phase of
guest OS boot, until the virtio-balloon driver is activated. Thereafter
the reported stats reflect the guest OS activity.
When a machine reset is performed, however, the virtio-balloon stats are
left unchanged by QEMU, despite the guest OS no longer updating them,
nor indeed even still existing.
IOW, the mgmt app keeps getting stale stats until the guest OS starts
once more and loads the virtio-balloon driver (if ever). At that point
the app will see a discontinuity in the reported values as they sudden
jump from the stale value to the new value. This jump is indigituishable
from a valid data update.
While there is an "last-updated" field to report on the freshness of
the stats, that does not unambiguously tell the mgmt app whether the
stats are still conceptually relevant to the current running workload.
It is more conceptually useful to reset the stats to their default
values on machine reset, given that the previous guest workload the
stats reflect no longer exists. The mgmt app can now clearly identify
that there are is no stats information available from the current
executing workload.
The 'last-updated' time is also reset back to 0.
IOW, on every machine reset, the virtio stats are in the same clean
state they were when the macine first powered on.
A functional test is added to validate this behaviour with a real
world guest OS.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20250204094202.2183262-1-berrange@redhat.com>
Acked-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Since the kernel does not check the interleave capability, a
3-way, 6-way, 12-way or 16-way region can be create normally.
Applications can access the memory of 16-way region normally because
qemu can convert hpa to dpa correctly for the power of 2 interleave
ways, after kernel implementing the check, this kind of region will
not be created any more.
For non power of 2 interleave ways, applications could not access the
memory normally and may occur some unexpected behaviors, such as
segmentation fault.
So implements this feature is needed.
Link: https://lore.kernel.org/linux-cxl/3e84b919-7631-d1db-3e1d-33000f3f3868@fujitsu.com/
Signed-off-by: Yao Xingtao <yaoxt.fnst@fujitsu.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250203161908.145406-6-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Simply pass the errp to its callee which will set errp if needed, to
enhance error reporting for CXL Type 3 device initialization by setting
the errp when realization functions fail.
Previously, failing to set `errp` could result in errors being overlooked,
causing the system to mistakenly treat failure scenarios as successful and
potentially leading to redundant cleanup operations in ct3_exit().
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250203161908.145406-5-Jonathan.Cameron@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Address a memory leak issue by ensuring `regs->special_ops` is freed when
`msix_init_exclusive_bar()` encounters an error during CXL Type3 device
initialization.
Additionally, this patch renames err_address_space_free to err_msix_uninit
for better clarity and logical flow
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250203161908.145406-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
msix_uninit_exclusive_bar() should be paired with msix_init_exclusive_bar()
Ensure proper resource cleanup by adding the missing
`msix_uninit_exclusive_bar()` call for the Type3 CXL device.
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250203161908.145406-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Introduce the `CXL_T3_MSIX_VECTOR` enumeration to specify MSIX vector
assignments specific to the Type 3 (T3) CXL device.
The primary goal of this change is to encapsulate the MSIX vector uses
that are unique to the T3 device within an enumeration, improving code
readability and maintenance by avoiding magic numbers. This organizational
change allows for more explicit references to each vector’s role, thereby
reducing the potential for misconfiguration.
It also modified `mailbox_reg_init_common` to accept the `msi_n` parameter,
reflecting the new MSIX vector setup.
This pertains to the T3 device privately; other endpoints should refrain from
using it, despite its public accessibility to all of them.
Signed-off-by: Li Zhijian <lizhijian@fujitsu.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20250203161908.145406-2-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
All other vhost-user tests here use modern virtio, too, so let's
adjust the vhost-user-net test accordingly.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20250203124346.169607-1-thuth@redhat.com>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU currently crashes when you try to inspect the properties of the
microvm machine:
$ echo '{ "execute": "qmp_capabilities" }
{ "execute": "qom-list-properties","arguments":
{ "typename": "microvm-machine"}}' | \
./qemu-system-x86_64 -qmp stdio
{"QMP": {"version": {"qemu": {"micro": 50, "minor": 2, "major": 9},
"package": "v9.2.0-1072-g60af367187-dirty"}, "capabilities": ["oob"]}}
{"return": {}}
qemu-system-x86_64: ../qemu/hw/i386/acpi-microvm.c:250:
void acpi_setup_microvm(MicrovmMachineState *):
Assertion `x86ms->fw_cfg' failed.
Aborted (core dumped)
This happens because the microvm machine adds a machine_done (and a
powerdown_req) notifier in their instance_init function - however, the
instance_init of machines are not only called for machines that are
realized, but also for machines that are introspected, so in this case
the listener is added for a microvm machine that is never realized. And
since there is already a running machine, the listener function is
triggered immediately, causing a crash since it was not for the right
machine it was meant for.
Such listener functions must never be installed from an instance_init
function. Let's do it from microvm_machine_state_init() instead - this
function is the MachineClass->init() function instead, i.e. guaranteed
to be only called once in the lifetime of a QEMU process.
Since the microvm_machine_done() and microvm_powerdown_req() were
defined quite late in the microvm.c file, we have to move them now
also earlier, so that we can get their function pointers from
microvm_machine_state_init() without having to introduce a separate
prototype for those functions earlier.
Reviewed-by: Sergio Lopez <slp@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20250123204708.1560305-1-thuth@redhat.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU currently crashes when you try to inspect the machines based on
TYPE_PC_MACHINE for their properties:
$ echo '{ "execute": "qmp_capabilities" }
{ "execute": "qom-list-properties","arguments":
{ "typename": "pc-q35-10.0-machine"}}' \
| ./qemu-system-x86_64 -M pc -qmp stdio
{"QMP": {"version": {"qemu": {"micro": 50, "minor": 2, "major": 9},
"package": "v9.2.0-1070-g87e115c122-dirty"}, "capabilities": ["oob"]}}
{"return": {}}
Segmentation fault (core dumped)
This happens because TYPE_PC_MACHINE machines add a machine_init-
done_notifier in their instance_init function - but instance_init
of machines are not only called for machines that are realized,
but also for machines that are introspected, so in this case the
listener is added for a q35 machine that is never realized. But
since there is already a running pc machine, the listener function
is triggered immediately, causing a crash since it was not for the
right machine it was meant for.
Such listener functions must never be installed from an instance_init
function. Let's do it from pc_basic_device_init() instead - this
function is called from the MachineClass->init() function instead,
i.e. guaranteed to be only called once in the lifetime of a QEMU
process.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2779
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20250117192106.471029-1-thuth@redhat.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Nothing should be doing this, but it doesn't get caught by
pci_register_bar(). Add an assertion to prevent misuse.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20250117172842.406338-3-npiggin@gmail.com>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Of the MSI-X PBA pending bits, the PCI Local Bus Specification says:
Software should never write, and should only read
Pending Bits. If software writes to Pending Bits, the
result is undefined.
Log a GUEST_ERROR message if the PBA is written to by software.
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Dmitry Fleytman <dmitry.fleytman@gmail.com>
Cc: Sriram Yagnaraman <sriram.yagnaraman@ericsson.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20250117172842.406338-2-npiggin@gmail.com>
Reviewed-by: Phil Dennis-Jordan <phil@philjordan.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The PCI Local Bus Specification says the result of writes to MSI-X
PBA memory is undefined. QEMU implements them as no-ops, so remove
the pointless write from qpci_msix_pending().
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20250117172244.406206-2-npiggin@gmail.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pcie_sriov doesn't have code to restore its state after migration, but
igb, which uses pcie_sriov, naively claimed its migration capability.
Add code to register VFs after migration and fix igb migration.
Fixes: 3a977deebe6b ("Intrdocue igb device emulation")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-11-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
num_vfs is not migrated so use PCI_SRIOV_CTRL_VFE and PCI_SRIOV_NUM_VF
instead.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-10-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Release VFs failed to realize just as we do in unregister_vfs().
Fixes: 7c0fa8dff811 ("pcie: Add support for Single Root I/O Virtualization (SR/IOV)")
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-9-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Disable SR-IOV VF devices by reusing code to power down PCI devices
instead of removing them when the guest requests to disable VFs. This
allows to realize devices and report VF realization errors at PF
realization time.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-8-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
pci_new() aborts when creating a VF with addr >= PCI_DEVFN_MAX.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-7-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
A device gets automatically unrealized when being unparented.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-6-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
The SR-IOV PFs set the multifunction bit during device realization so
check them after that. There is no functional change because we
explicitly ignore the multifunction bit for SR-IOV devices.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-5-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The guest cannot use VFs due to the lack of multifunction support but
can use PFs.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-4-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
VFs are automatically created by PF, and creating zpci for them will
result in unexpected usage of fids. Currently QEMU does not support
multifunction for s390x so we don't need zpci for VFs anyway.
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20250116-reuse-v20-3-7cb370606368@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
