Commit Graph

165 Commits

Author SHA1 Message Date
Rob Bradford
b4f887ea80 build: Move from patched vm-memory version to released version
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-08-06 10:08:58 +01:00
Sebastien Boeuf
c1b962048c vm-migration: Extend Migratable trait
Add new methods to the Migratable trait so that each device implementing
this trait can be notified when the migration starts/stops, as well as
when a dirty bitmap must be returned.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-08-05 06:07:00 -07:00
Sebastien Boeuf
79425b6aa8 vm-migration, vmm: Extend methods for MemoryRangeTable
In anticipation for supporting the merge of multiple dirty pages coming
from multiple devices, this patch factorizes the creation of a
MemoryRangeTable from a bitmap, as well as providing a simple method for
merging the dirty pages regions under a single MemoryRangeTable.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2021-08-05 06:07:00 -07:00
Rob Bradford
e6db599907 build: Release 17.0
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-07-22 17:15:32 +01:00
Rob Bradford
5ed8e01faf build: Release v16.0
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-06-10 16:59:52 +01:00
Rob Bradford
496ceed1d0 misc: Remove unnecessary "extern crate"
Now all crates use edition = "2018" then the majority of the "extern
crate" statements can be removed. Only those for importing macros need
to remain.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-05-12 17:26:11 +02:00
Rob Bradford
bbda08717f vm-migration: Add versioned versions of snapshot & state API
This will allow progressive porting of parts of the VMM to using
versioned state. A new trait VersionMapped is introduced with a default
implementation that returns an empty VersionMap to ease implementation.

If a struct is updated the the trait will need to be fully implemented
with VersionMapped::version_map() returning a new VersionMap handling
the change.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-05-10 14:40:27 +01:00
Rob Bradford
08c4e5031f vm-migration: Support (de)serialising SnapshotDataSection directly
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-04-20 18:58:37 +02:00
Rob Bradford
6f5d4702d4 misc: Simplify snapshot/restore by using helper functions
Simplify snapshot & restore code by using generics to specify helper
functions that take / make a Serialize / Deserialize struct

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-04-08 16:17:14 +01:00
Rob Bradford
8e9a5a0dbb vm-migration: Use vm-memory's ByteValued instead of own AsBytes
This addresses a newly added clippy issue:

error: methods called `as_*` usually take self by reference or self by mutable reference; consider choosing a less ambiguous name
  --> vm-migration/src/protocol.rs:57:34
   |
57 |     fn as_mut_bytes<T: Sized>(p: &mut T) -> &mut [u8] {
   |                                  ^^^^^^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#wrong_self_convention

error: aborting due to 2 previous errors

error: could not compile `vm-migration`

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2021-02-11 18:18:44 +00:00
Rob Bradford
11a69450ba vm-migration, vmm: Send configuration in separate step
Prior to sending the memory the full state is not needed only the
configuration. This is sufficient to create the appropriate structures
in the guest and have the memory allocations ready for filling.

Update the protocol documentation to add a separate config step and move
the state to after the memory is transferred. As the VM is created in a
separate step to restoring it the requires a slightly different
constructor as well as saving the VM object for the subsequent commands.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-17 16:57:11 +00:00
Rob Bradford
aa98589bb4 vm-migration: Add protocol documentation and data structures
Add the documentation and basic implementation for supporting migration.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-11 11:07:24 +01:00
Henry Wang
c6b47d39e0 vmm: refactor vCPU save/restore code in restoring VM
Similarly as the VM booting process, on AArch64 systems,
the vCPUs should be created before the creation of GIC. This
commit refactors the vCPU save/restore code to achieve the
above-mentioned restoring order.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
2020-09-23 12:37:25 +01:00
Sebastien Boeuf
871138d5cc vm-migration: Make snapshot() mutable
There will be some cases where the implementation of the snapshot()
function from the Snapshottable trait will require to modify some
internal data, therefore we make this possible by updating the trait
definition with snapshot(&mut self).

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
2020-08-25 16:43:10 +02:00
Samuel Ortiz
1b1a2175ca vm-migration: Define the Snapshottable and Transportable traits
A Snapshottable component can snapshot itself and
provide a MigrationSnapshot payload as a result.

A MigrationSnapshot payload is a map of component IDs to a list of
migration sections (MigrationSection). As component can be made of
several Migratable sub-components (e.g. the DeviceManager and its
device objects), a migration snapshot can be made of multiple snapshot
itself.
A snapshot is a list of migration sections, each section being a
component state snapshot. Having multiple sections allows for easier and
backward compatible migration payload extensions.

Once created, a migratable component snapshot may be transported and this
is what the Transportable trait defines, through 2 methods: send and recv.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Yi Sun <yi.y.sun@linux.intel.com>
2020-04-02 13:24:25 +01:00