Look at qmp_transaction(): dev_list is not obvious name for list of
actions. Let's look at qapi spec, this argument is "actions". Let's
follow the common practice of using same argument names in qapi scheme
and code.
To be honest, rename props to properties for same reason.
Next, we have to rename global map of actions, to not conflict with new
name for function argument.
Rename also dev_entry loop variable accordingly to new name of the
list.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Message-Id: <20230510150624.310640-3-vsementsov@yandex-team.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
We are going to add more block-graph modifying transaction actions,
and block-graph modifying functions are already based on Transaction
API.
Next, we'll need to separately update permissions after several
graph-modifying actions, and this would be simple with help of
Transaction API.
So, now let's just transform what we have into new-style transaction
actions.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20230510150624.310640-2-vsementsov@yandex-team.ru>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This reverts commit b320e21c48,
which accidentally broke TCG, because it made the TCG -cpu max
report the presence of MTE to the guest even if the board hadn't
enabled MTE by wiring up the tag RAM. This meant that if the guest
then tried to use MTE QEMU would segfault accessing the
non-existent tag RAM:
==346473==ERROR: UndefinedBehaviorSanitizer: SEGV on unknown address (pc 0x55f328952a4a bp 0x00000213a400 sp 0x7f7871859b80 T346476)
==346473==The signal is caused by a READ memory access.
==346473==Hint: this fault was caused by a dereference of a high value address (see register values below). Disassemble the provided pc to learn which register was used.
#0 0x55f328952a4a in address_space_to_flatview /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/memory.h:1108:12
#1 0x55f328952a4a in address_space_translate /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/include/exec/memory.h:2797:31
#2 0x55f328952a4a in allocation_tag_mem /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/../../target/arm/tcg/mte_helper.c:176:10
#3 0x55f32895366c in helper_stgm /mnt/nvmedisk/linaro/qemu-from-laptop/qemu/build/arm-clang/../../target/arm/tcg/mte_helper.c:461:15
#4 0x7f782431a293 (<unknown module>)
It's also not clear that the KVM logic is correct either:
MTE defaults to on there, rather than being only on if the
board wants it on.
Revert the whole commit for now so we can sort out the issues.
(We didn't catch this in CI because we have no test cases in
avocado that use guests with MTE support.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20230519145808.348701-1-peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
According to PCIe Address Translation Services specification 5.1.3.,
ATS Control Register has Enable bit to enable/disable ATS. Guest may
enable/disable PCI ATS and, accordingly, Device-TLB for the VirtIO PCI
device. So, raise/lower a flag and call a trigger function to pass this
event to a device implementation.
Signed-off-by: Viktor Prutyanov <viktor@daynix.com>
Message-Id: <20230512135122.70403-2-viktor@daynix.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Unlike pam_update() which takes the subject -- PAMMemoryRegion -- as
first argument, init_pam() takes it as fifth (!) argument. This makes it
quite hard to figure out what an init_pam() invocation actually
initializes. By moving the subject to the front this should become
clearer.
While at it, lower the DeviceState parameter to Object, also
communicating more clearly that this parameter is just the owner rather
than some (heavy?) dependency.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20230213162004.2797-8-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
sysbus_add_io() just wraps memory_region_add_subregion() while also
obscuring where the memory is attached. So use
memory_region_add_subregion() directly and attach it to the existing
memory region s->mch.address_space_io which is set as an alias to
get_system_io() by the q35 machine.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-3-shentey@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
sysbus_add_io() just wraps memory_region_add_subregion() while also
obscuring where the memory is attached. So use
memory_region_add_subregion() directly and attach it to the existing
memory region s->bus->address_space_io which is set as an alias to
get_system_io() by the pc machine.
Signed-off-by: Bernhard Beschow <shentey@gmail.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230213162004.2797-2-shentey@gmail.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>
1. The vIOMMU support will make vDPA can work in IOMMU mode. This
will fix security issues while using the no-IOMMU mode.
To support this feature we need to add new functions for IOMMU MR adds and
deletes.
Also since the SVQ does not support vIOMMU yet, add the check for IOMMU
in vhost_vdpa_dev_start, if the SVQ and IOMMU enable at the same time
the function will return fail.
2. Skip the iova_max check vhost_vdpa_listener_skipped_section(). While
MR is IOMMU, move this check to vhost_vdpa_iommu_map_notify()
Verified in vp_vdpa and vdpa_sim_net driver
Signed-off-by: Cindy Lu <lulu@redhat.com>
Message-Id: <20230510054631.2951812-5-lulu@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The commit 93a97dc520 ("virtio-net: enable vq reset feature") enables
unconditionally vq reset feature as long as the device is emulated.
This makes impossible to actually disable the feature, and it causes
migration problems from qemu version previous than 7.2.
The entire final commit is unneeded as device system already enable or
disable the feature properly.
This reverts commit 93a97dc520.
Fixes: 93a97dc520 ("virtio-net: enable vq reset feature")
Signed-off-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230504101447.389398-1-eperezma@redhat.com>
Reviewed-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Let's just support 512 memslots on x86-64 and aarch64 as well. The maximum
number of ACPI slots (256) is no longer completely expressive ever since
we supported virtio-based memory devices. Further, we're completely
ignoring other memslots used outside of memory device context, such as
memslots used for boot memory.
Note that the vhost memslot limit in the kernel is usually configured to
be 509. With this change, we prepare vhost-user on the QEMU side to be
closer to that limit, to eventually support ~512 memslots in most vhost
implementations and have less "surprises" when cold/hotplugging vhost
devices while also consuming more memslots than we're currently used to
by memory devices (e.g., once virtio-mem starts using multiple memslots).
Note that most vhost-user implementations only support a small number of
memslots so far, which we can hopefully improve in the near future.
We'll leave the PPC special-case as is for now.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230503184144.808478-1-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Allowing guests to read unplugged memory simplified the bring-up of
virtio-mem in Linux guests -- which was limited to x86-64 only. On arm64
(which was added later), we never had legacy guests and don't even allow
to configure it, essentially always having "unplugged-inaccessible=on".
At this point, all guests we care about
should be supporting VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE, so let's
change the default for the 8.1 machine.
This change implies that also memory that supports the shared zeropage
(private anonymous memory) will now require
VIRTIO_MEM_F_UNPLUGGED_INACCESSIBLE in the driver in order to be usable by
the guest -- as default, one can still manually set the
unplugged-inaccessible property.
Disallowing the guest to read unplugged memory will be important for
some future features, such as memslot optimizations or protection of
unplugged memory, whereby we'll actually no longer allow the guest to
even read from unplugged memory.
At some point, we might want to deprecate and remove that property.
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Eduardo Habkost <eduardo@habkost.net>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20230503182352.792458-1-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Since it's implementation on v8.0.0-rc0, having the PCI_ERR_UNCOR_MASK
set for machine types < 8.0 will cause migration to fail if the target
QEMU version is < 8.0.0 :
qemu-system-x86_64: get_pci_config_device: Bad config data: i=0x10a read: 40 device: 0 cmask: ff wmask: 0 w1cmask:0
qemu-system-x86_64: Failed to load PCIDevice:config
qemu-system-x86_64: Failed to load e1000e:parent_obj
qemu-system-x86_64: error while loading state for instance 0x0 of device '0000:00:02.0/e1000e'
qemu-system-x86_64: load of migration failed: Invalid argument
The above test migrated a 7.2 machine type from QEMU master to QEMU 7.2.0,
with this cmdline:
./qemu-system-x86_64 -M pc-q35-7.2 [-incoming XXX]
In order to fix this, property x-pcie-err-unc-mask was introduced to
control when PCI_ERR_UNCOR_MASK is enabled. This property is enabled by
default, but is disabled if machine type <= 7.2.
Fixes: 010746ae1d ("hw/pci/aer: Implement PCI_ERR_UNCOR_MASK register")
Suggested-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Leonardo Bras <leobras@redhat.com>
Message-Id: <20230503002701.854329-1-leobras@redhat.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/1576
Tested-by: Fiona Ebner <f.ebner@proxmox.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Setting the VIRTIO Device Status Field to 0 resets the device. The
device's state is lost, including the vring configuration.
vhost-user.c currently sends SET_STATUS 0 before GET_VRING_BASE. This
risks confusion about the lifetime of the vhost-user state (e.g. vring
last_avail_idx) across VIRTIO device reset.
Eugenio Pérez <eperezma@redhat.com> adjusted the order for vhost-vdpa.c
in commit c3716f260b ("vdpa: move vhost reset after get vring base")
and in that commit description suggested doing the same for vhost-user
in the future.
Go ahead and adjust vhost-user.c now. I ran various online code searches
to identify vhost-user backends implementing SET_STATUS. It seems only
DPDK implements SET_STATUS and Yajun Wu <yajunw@nvidia.com> has
confirmed that it is safe to make this change.
Fixes: commit 923b8921d2 ("vhost-user: Support vhost_dev_start")
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Cindy Lu <lulu@redhat.com>
Cc: Yajun Wu <yajunw@nvidia.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20230501230409.274178-1-stefanha@redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>
Reviewed-by: Yajun Wu <yajunw@nvidia.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit enables each CXL Type-3 device to contain one volatile
memory region and one persistent region.
Two new properties have been added to cxl-type3 device initialization:
[volatile-memdev] and [persistent-memdev]
The existing [memdev] property has been deprecated and will default the
memory region to a persistent memory region (although a user may assign
the region to a ram or file backed region). It cannot be used in
combination with the new [persistent-memdev] property.
Partitioning volatile memory from persistent memory is not yet supported.
Volatile memory is mapped at DPA(0x0), while Persistent memory is mapped
at DPA(vmem->size), per CXL Spec 8.2.9.8.2.0 - Get Partition Info.
Signed-off-by: Gregory Price <gregory.price@memverge.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Tested-by: Fan Ni <fan.ni@samsung.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421160827.2227-4-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
The failure paths in CDAT file loading did not clear up properly.
Change to using g_auto_free and a local pointer for the buffer to
ensure this function has no side effects on error.
Also drop some unnecessary checks that can not fail.
Cleanup properly after a failure to load a CDAT file.
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Message-Id: <20230421132020.7408-3-Jonathan.Cameron@huawei.com>
Reviewed-by: Fan Ni <fan.ni@samsung.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
QEMU invokes vhost_svq_add() when adding a guest's element
into SVQ. In vhost_svq_add(), it uses vhost_svq_available_slots()
to check whether QEMU can add the element into SVQ. If there is
enough space, then QEMU combines some out descriptors and some
in descriptors into one descriptor chain, and adds it into
`svq->vring.desc` by vhost_svq_vring_write_descs().
Yet the problem is that, `svq->shadow_avail_idx - svq->shadow_used_idx`
in vhost_svq_available_slots() returns the number of occupied elements,
or the number of descriptor chains, instead of the number of occupied
descriptors, which may cause wrapping in SVQ descriptor ring.
Here is an example. In vhost_handle_guest_kick(), QEMU forwards
as many available buffers to device by virtqueue_pop() and
vhost_svq_add_element(). virtqueue_pop() returns a guest's element,
and then this element is added into SVQ by vhost_svq_add_element(),
a wrapper to vhost_svq_add(). If QEMU invokes virtqueue_pop() and
vhost_svq_add_element() `svq->vring.num` times,
vhost_svq_available_slots() thinks QEMU just ran out of slots and
everything should work fine. But in fact, virtqueue_pop() returns
`svq->vring.num` elements or descriptor chains, more than
`svq->vring.num` descriptors due to guest memory fragmentation,
and this causes wrapping in SVQ descriptor ring.
This bug is valid even before marking the descriptors used.
If the guest memory is fragmented, SVQ must add chains
so it can try to add more descriptors than possible.
This patch solves it by adding `num_free` field in
VhostShadowVirtqueue structure and updating this field
in vhost_svq_add() and vhost_svq_get_buf(), to record
the number of free descriptors.
Fixes: 100890f7ca ("vhost: Shadow virtqueue buffers forwarding")
Signed-off-by: Hawkins Jiawei <yin31149@gmail.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Message-Id: <20230509084817.3973-1-yin31149@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Tested-by: Lei Yang <leiyang@redhat.com>
Hexagon update
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# =1CyJ
# -----END PGP SIGNATURE-----
# gpg: Signature made Thu 18 May 2023 12:48:24 PM PDT
# gpg: using RSA key 3635C788CE62B91FD4C59AB47B0244FB12DE4422
# gpg: Good signature from "Taylor Simpson (Rock on) <tsimpson@quicinc.com>" [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: 3635 C788 CE62 B91F D4C5 9AB4 7B02 44FB 12DE 4422
* tag 'pull-hex-20230518-1' of https://github.com/quic/qemu: (44 commits)
Hexagon (linux-user/hexagon): handle breakpoints
Hexagon (gdbstub): add HVX support
Hexagon (gdbstub): fix p3:0 read and write via stub
Hexagon: add core gdbstub xml data for LLDB
gdbstub: add test for untimely stop-reply packets
gdbstub: only send stop-reply packets when allowed to
Remove test_vshuff from hvx_misc tests
Hexagon (decode): look for pkts with multiple insns at the same slot
Hexagon (iclass): update J4_hintjumpr slot constraints
Hexagon: append eflags to unknown cpu model string
Hexagon: list available CPUs with `-cpu help`
Hexagon (target/hexagon/*.py): raise exception on reg parsing error
target/hexagon: fix = vs. == mishap
Hexagon (target/hexagon) Additional instructions handled by idef-parser
Hexagon (target/hexagon) Move items to DisasContext
Hexagon (target/hexagon) Move pkt_has_store_s1 to DisasContext
Hexagon (target/hexagon) Move pred_written to DisasContext
Hexagon (target/hexagon) Move new_pred_value to DisasContext
Hexagon (target/hexagon) Move new_value to DisasContext
Hexagon (target/hexagon) Make special new_value for USR
...
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
