It is not possible to use the previously extracted templates
without this set of core containers. Extract them into a new
file (container-core.yml) to be able to build them without
having to build all the other containers by default.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-10-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
To be able to reuse the mainstream build/test jobs templates,
extract them into a new file (buildtest-template.yml).
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-8-f4bug@amsat.org>
[thuth: Keep the "acceptance_test_job_template" name for now]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Extract the build stages used by our job templates to a new file
(stages.yml) to be able to include it with the other templates,
without having to run all the jobs included in the default
.gitlab-ci.yml, which are mainly useful for mainstream CI.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-7-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Extract the DCO / checkpatch jobs to a new file (static_checks.yml)
to be able to run them without having to run all the jobs included
in the default .gitlab-ci.yml, which are mainly useful for the
mainstream CI.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-6-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Extract the crossbuild job templates to a new file
(crossbuild-template.yml) to be able to reuse them
without having to run all the jobs included, which
are mainly useful for mainstream CI.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-5-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Extract the container job template to a new file
(container-template.yml) to be able to reuse it
without having to run all the jobs included, which
are mainly useful for mainstream CI.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-4-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
We're currently only testing TCI with a 64-bit host -- also test
with a 32-bit host. Enable a selection of softmmu and user-only
targets, 32-bit LE, 64-bit LE, 32-bit BE, as there are ifdefs for each.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20210502235727.1979457-27-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
'extends' is an alternative to using YAML anchors
and is a little more flexible and readable. See:
https://docs.gitlab.com/ee/ci/yaml/#extends
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Reviewed-by: Willian Rampazzo <willianr@redhat.com>
Message-Id: <20210519185504.2198573-2-f4bug@amsat.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Fixes for a loadvm regression from Kevin,
some virtiofsd cleanups from Vivek and Mahmoud, and
some RDMA migration fixups from Li.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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Merge remote-tracking branch 'remotes/dgilbert/tags/pull-migration-20210526a' into staging
Virtiofs, migration and hmp pull 2021-05-26
Fixes for a loadvm regression from Kevin,
some virtiofsd cleanups from Vivek and Mahmoud, and
some RDMA migration fixups from Li.
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
# gpg: Signature made Wed 26 May 2021 18:43:30 BST
# gpg: using RSA key 45F5C71B4A0CB7FB977A9FA90516331EBC5BFDE7
# gpg: Good signature from "Dr. David Alan Gilbert (RH2) <dgilbert@redhat.com>" [full]
# Primary key fingerprint: 45F5 C71B 4A0C B7FB 977A 9FA9 0516 331E BC5B FDE7
* remotes/dgilbert/tags/pull-migration-20210526a:
migration/rdma: source: poll cm_event from return path
migration/rdma: destination: create the return patch after the first accept
migration/rdma: Fix rdma_addrinfo res leaks
migration/rdma: cleanup rdma in rdma_start_incoming_migration error path
migration/rdma: Fix cm_event used before being initialized
tools/virtiofsd/fuse_opt.c: Replaced a malloc with GLib's g_try_malloc
tools/virtiofsd/buffer.c: replaced a calloc call with GLib's g_try_new0
virtiofsd: Set req->reply_sent right after sending reply
virtiofsd: Check EOF before short read
virtiofsd: Simplify skip byte logic
virtiofsd: get rid of in_sg_left variable
virtiofsd: Use iov_discard_front() to skip bytes
virtiofsd: Get rid of unreachable code in read
virtiofsd: Check for EINTR in preadv() and retry
hmp: Fix loadvm to resume the VM on success instead of failure
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
If a blob is available for the cursor, copy the data from the blob.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-15-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This API allows Qemu to set the blob allocated by the Guest as
the scanout buffer. If Opengl support is available, then the
scanout buffer would be submitted as a dmabuf to the UI; if not,
a pixman image is created from the scanout buffer and is
submitted to the UI via the display surface.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-14-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Creating a small helper function for updating the scanout
will be useful in the next patch where this needs to be
done early in do_set_scanout before returning.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-13-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
These helpers can be useful for creating dmabuf objects from blobs
and submitting them to the UI.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-12-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This new function to get the drm_format associated with a pixman
format will be useful while creating a dmabuf.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-11-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This API allows Qemu to register the blob allocated by the Guest
as a new resource and map its backing storage.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-10-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add the property bit, configuration flag and other relevant
macros and definitions associated with this feature.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-9-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Instead of passing the attach_backing object to extract nr_entries
and offset, explicitly pass these as arguments to this function.
This will be helpful when adding create_blob API.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-8-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Store the meta-data associated with a FB in a new object
(struct virtio_gpu_framebuffer) and pass the object to set_scanout.
Also move code in set_scanout into a do_set_scanout function.
This will be helpful when adding set_scanout_blob API.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-7-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This is needed to ensure that virtio-gpu device works for
non-linux builds.
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-5-vivek.kasireddy@intel.com>
[ kraxel: add virtio-gpu-udmabuf.c stubs only when building
system emulation ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Add helper functions to create a dmabuf for a resource and mmap it.
Also, introduce the fields blob and blob_size so that these helpers
can start to use them but the full picture will emerge only after
adding create_blob API in patch 8 of this series.
To be able to create a dmabuf using the udmabuf driver, Qemu needs
to be lauched with the memfd memory backend like this:
qemu-system-x86_64 -m 8192m -object memory-backend-memfd,id=mem1,size=8192M
-machine memory-backend=mem1
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-4-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This adds udmabuf header to standard headers so that the
relevant udmabuf objects can be accessed in subsequent
patches.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-3-vivek.kasireddy@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Try to open the udmabuf dev node for the first time or return the
fd if the device was previously opened.
Based-on-patch-by: Gerd Hoffmann <kraxel@redhat.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Vivek Kasireddy <vivek.kasireddy@intel.com>
Message-Id: <20210526231429.1045476-2-vivek.kasireddy@intel.com>
[ kraxel: fixup fcntl.h include ]
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
On some MIPS system, page size is 16K, and qxl vga device can
be used for VM in kvm mode. Qxl pci rom size is set 8K fixed,
smaller than 16K page size on host system, it fails to be
added into memslots in kvm mode where memory_size and GPA
are required to align with page size.
This patch fixes this issue.
Signed-off-by: Bibo Mao <maobibo@loongson.cn>
Message-Id: <1621340448-31617-1-git-send-email-maobibo@loongson.cn>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Currently in vhost-user-gpu, we free resource directly in
the cleanup case of resource. If we change the cleanup logic
we need to change several places, also abstruct a
'vg_create_mapping_iov' can be symmetry with the
'vg_create_mapping_iov'. This is like what virtio-gpu does,
no function changed.
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-9-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If 'virgl_cmd_get_capset' set 'max_size' to 0,
the 'virgl_renderer_fill_caps' will write the data after the 'resp'.
This patch avoid this by checking the returned 'max_size'.
virtio-gpu fix: abd7f08b23 ("display: virtio-gpu-3d: check
virgl capabilities max_size")
Fixes: CVE-2021-3546
Reported-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-8-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
The 'res->iov' will be leaked if the guest trigger following sequences:
virgl_cmd_create_resource_2d
virgl_resource_attach_backing
virgl_cmd_resource_unref
This patch fixes this.
Fixes: CVE-2021-3544
Reported-by: Li Qiang <liq3ea@163.com>
virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak
in virgl_cmd_resource_unref"
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-6-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
If the guest trigger following sequences, the attach_backing will be leaked:
vg_resource_create_2d
vg_resource_attach_backing
vg_resource_unref
This patch fix this by freeing 'res->iov' in vg_resource_destroy.
Fixes: CVE-2021-3544
Reported-by: Li Qiang <liq3ea@163.com>
virtio-gpu fix: 5e8e3c4c75 ("virtio-gpu: fix resource leak
in virgl_cmd_resource_unref")
Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-5-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Otherwise some of the 'resp' will be leaked to guest.
Fixes: CVE-2021-3545
Reported-by: Li Qiang <liq3ea@163.com>
virtio-gpu fix: 42a8dadc74 ("virtio-gpu: fix information leak
in getting capset info dispatch")
Signed-off-by: Li Qiang <liq3ea@163.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20210516030403.107723-2-liq3ea@163.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
OpenBSD added support for tap(4) 10 releases ago.
Remove the special casing for older releases.
Signed-off-by: Brad Smith <brad@comstyle.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
In the failover case configuration, virtio_net_device_realize() uses an
add_migration_state_change_notifier() to add a state notifier, but this
notifier is not removed by the unrealize function when the virtio-net
card is unplugged.
If the card is unplugged and a migration is started, the notifier is
called and as it is not valid anymore QEMU crashes.
This patch fixes the problem by adding the
remove_migration_state_change_notifier() in virtio_net_device_unrealize().
The problem can be reproduced with:
$ qemu-system-x86_64 -enable-kvm -m 1g -M q35 \
-device pcie-root-port,slot=4,id=root1 \
-device pcie-root-port,slot=5,id=root2 \
-device virtio-net-pci,id=net1,mac=52:54:00:6f:55:cc,failover=on,bus=root1 \
-monitor stdio disk.qcow2
(qemu) device_del net1
(qemu) migrate "exec:gzip -c > STATEFILE.gz"
Thread 1 "qemu-system-x86" received signal SIGSEGV, Segmentation fault.
0x0000000000000000 in ?? ()
(gdb) bt
#0 0x0000000000000000 in ()
#1 0x0000555555d726d7 in notifier_list_notify (...)
at .../util/notify.c:39
#2 0x0000555555842c1a in migrate_fd_connect (...)
at .../migration/migration.c:3975
#3 0x0000555555950f7d in migration_channel_connect (...)
error@entry=0x0) at .../migration/channel.c:107
#4 0x0000555555910922 in exec_start_outgoing_migration (...)
at .../migration/exec.c:42
Reported-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
If a PHY does not exist, attempts to read from it should return 0xffff.
Otherwise the Linux kernel will believe that a PHY is there and select
the non-existing PHY. This in turn will result in network errors later
on since the real PHY is not selected or configured.
Since reading from or writing to a non-existing PHY is not an emulation
error, replace guest error messages with traces.
Fixes: 461c51ad42 ("Add a phy-num property to the i.MX FEC emulator")
Cc: Jean-Christophe Dubois <jcd@tribudubois.net>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jason Wang <jasowang@redhat.com>
We no longer have any runtime modifications to this struct,
so declare them all const.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20210227232519.222663-3-richard.henderson@linaro.org>
Add a flag to MIPSCPUClass in order to avoid needing to
replace mips_tcg_ops.do_transaction_failed.
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20210227232519.222663-2-richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-23-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-22-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-21-f4bug@amsat.org>
[rth: Drop declaration movement from target/*/cpu.h]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-20-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The write_elf*() handlers are used to dump vmcore images.
This feature is only meaningful for system emulation.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-19-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
cpu_get_crash_info() is called on GUEST_PANICKED events,
which only occur in system emulation.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-18-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
VirtIO devices are only meaningful with system emulation.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-17-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Migration is specific to system emulation.
- Move the CPUClass::vmsd field to SysemuCPUOps,
- restrict VMSTATE_CPU() macro to sysemu,
- vmstate_dummy is now unused, remove it.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-16-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Introduce a structure to hold handler specific to sysemu.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-15-f4bug@amsat.org>
[rth: Squash "restrict hw/core/sysemu-cpu-ops.h" patch]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
See rationale in previous commit. Targets should use the vmsd field
of DeviceClass, not CPUClass. As migration is not important on the
AVR target, break the migration compatibility and set the DeviceClass
vmsd field. To feel safer, increment the vmstate version.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210517105140.1062037-14-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Quoting Peter Maydell [*]:
There are two ways to handle migration for
a CPU object:
(1) like any other device, so it has a dc->vmsd that covers
migration for the whole object. As usual for objects that are a
subclass of a parent that has state, the first entry in the
VMStateDescription field list is VMSTATE_CPU(), which migrates
the cpu_common fields, followed by whatever the CPU's own migration
fields are.
(2) a backwards-compatible mechanism for CPUs that were
originally migrated using manual "write fields to the migration
stream structures". The on-the-wire migration format
for those is based on the 'env' pointer (which isn't a QOM object),
and the cpu_common part of the migration data is elsewhere.
cpu_exec_realizefn() handles both possibilities:
* for type 1, dc->vmsd is set and cc->vmsd is not,
so cpu_exec_realizefn() does nothing, and the standard
"register dc->vmsd for a device" code does everything needed
* for type 2, dc->vmsd is NULL and so we register the
vmstate_cpu_common directly to handle the cpu-common fields,
and the cc->vmsd to handle the per-CPU stuff
You can't change a CPU from one type to the other without breaking
migration compatibility, which is why some guest architectures
are stuck on the cc->vmsd form. New targets should use dc->vmsd.
To avoid new targets to start using type (2), rename cc->vmsd as
cc->legacy_vmsd. The correct field to implement is dc->vmsd (the
DeviceClass one).
See also commit b170fce3dd ("cpu: Register VMStateDescription
through CPUState") for historic background.
[*] https://www.mail-archive.com/qemu-devel@nongnu.org/msg800849.html
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Cc: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210517105140.1062037-13-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Migration is specific to system emulation.
Restrict current DeviceClass::vmsd to sysemu using #ifdef'ry,
and assert in cpu_exec_realizefn() that dc->vmsd not set under
user emulation.
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210517105140.1062037-12-f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
