This patch adds all the seccomp rules missing for MSHV.
With this patch MSFT internal CI runs with seccomp enabled.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This patch adds a fallback path for sending live migration, where it
ensures the following behavior of source VM post live-migration:
1. The source VM will be paused only when the migration is completed
successfully, or otherwise it will keep running;
2. The source VM will always stop dirty pages logging.
Fixes: #2895
Signed-off-by: Bo Chen <chen.bo@intel.com>
The vhost-user-net backend needs to prepare all queues before enabling vring.
For example, DPVGW will report 'the RX queue can't find' error, if we enable
vring immediately after kicking it out.
Signed-off-by: Arafatms <arafatms@outlook.com>
This rule is needed to boot windows guest.
This bug was introduced while we tried to boot
windows guest on MSHV.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
This patch modify the existing live migration code
to support MSHV. Adds couple of new functions to enable
and disable dirty page tracking. Add missing IOCTL
to the seccomp rules for live migration.
Adds necessary flags for MSHV.
This changes don't affect KVM functionality at all.
In order to get better performance it is good to
enable dirty page tracking when we start live migration
and disable it when the migration is done.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Right now, get_dirty_log API has two parameters,
slot and memory_size.
MSHV needs gpa to retrieve the page states. GPA is
needed as MSHV returns the state base on PFN.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Now that vhost-user supports being snapshot and restored, we extend the
existing test_ovs_dpdk to validate snapshot/restore feature works as
expected.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Adding the support for snapshot/restore feature for all supported
vhost-user devices.
The complexity of vhost-user-fs device makes it only partially
compatible with the feature. When using the DAX feature, there's no way
to store and remap what was previously mapped in the DAX region. And
when not using the cache region, if the filesystem is mounted, it fails
to be properly restored as this would require a special command to let
the backend know that it must remount what was already mounted before.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This patch moves all vhost-user common functions behind a new structure
VhostUserHandle. There is no functional changes intended, the only goal
being to prepare for storing information through this new structure,
limiting the amount of parameters that are needed for each function.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We didn't implement the vhost-user-net backend to support EVENT_IDX
feature, hence it is incorrect to advertise VIRTIO_RING_F_EVENT_IDX to
the VMM and the guest.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
It's totally acceptable to snapshot and restore a virtio-fs device that
has no cache region, since this is a valid mode of functioning for
virtio-fs itself.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With the new beta version, clippy complains about redundant allocation
when using Arc<Box<dyn T>>, and suggests replacing it simply with
Arc<dyn T>.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
As we are now using an global control to start/stop dirty pages log from
the `hypervisor` crate, we need to explicitly tell the hypervisor (KVM)
whether a region needs dirty page tracking when it is created.
This reverts commit f063346de3.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Following KVM interfaces, the `hypervisor` crate now provides interfaces
to start/stop the dirty pages logging on a per region basis, and asks
its users (e.g. the `vmm` crate) to iterate over the regions that needs
dirty pages log. MSHV only has a global control to start/stop dirty
pages log on all regions at once.
This patch refactors related APIs from the `hypervisor` crate to provide
a global control to start/stop dirty pages log (following MSHV's
behaviors), and keeps tracking the regions need dirty pages log for
KVM. It avoids leaking hypervisor-specific behaviors out of the
`hypervisor` crate.
Signed-off-by: Bo Chen <chen.bo@intel.com>
To support different CPUID entry semantics, we now allow to
specify the compatible condition for each feature entry. Most entries
are considered compatible when they are "bitwise subset", with few
exceptions: 1. "equal", e.g. EBX/ECX/EDX of leaf `0x4000_0000` (KVM
CPUID SIGNATURE); 2. "smaller or equal as a number", e.g. EAX of leaf
`0x7` and leaf `0x4000_0000`;
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch adds a common function "Vmm::vm_check_cpuid_compatibility()"
to be shared by both live-migration and snapshot/restore.
Signed-off-by: Bo Chen <chen.bo@intel.com>
We now send not only the 'VmConfig' at the 'Command::Config' step of
live migration, but also send the 'common CPUID'. In this way, we can
check the compatibility of CPUID features between the source and
destination VMs, and abort live migration early if needed.
Signed-off-by: Bo Chen <chen.bo@intel.com>
Add missing option of hugepage_size in argument of memory,
and add some details about lacking huge pages.
Signed-off-by: Yu Li <liyu.yukiteru@bytedance.com>
With the support of dynamically turning on/off dirty-pages-log during
live-migration (only for guest RAM regions), we now can create guest
memory regions without dirty-pages-log by default both for guest RAM
regions and other regions backed by file/device.
Signed-off-by: Bo Chen <chen.bo@intel.com>
This patch extends slightly the current live-migration code path with
the ability to dynamically start and stop logging dirty-pages, which
relies on two new methods added to the `hypervisor::vm::Vm` Trait. This
patch also contains a complete implementation of the two new methods
based on `kvm` and placeholders for `mshv` in the `hypervisor` crate.
Fixes: #2858
Signed-off-by: Bo Chen <chen.bo@intel.com>
The existing test_macvtap is factorized to be able to support both
coldplug and hotplug of a macvtap interface through virtio-net. Adding
the new test_macvtap_hotplug test allows for validating that sending a
TAP file descriptor through control message along with the add-net
command works.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
To help with readability, we rely on exec_host_command_status() from the
macvtap test, which replaces the former "bash -c ..." syntax.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
