Commit Graph

2989 Commits

Author SHA1 Message Date
Wei Liu
c8b655490e hypervisor: x86: reference PlatformEmulator in Emulator
The observation here is PlatformEmulator can be seen as the context for
emulation to take place. It should be rather easy to construct a context
that satisfies the lifetime constraints for instruction emulation.

The thread doing the emulation will have full ownership over the
context, so this removes the need to wrap PlatformEmulator in Arc and
Mutex, as well as the need for the context to be either Clone or Copy.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2020-11-26 12:14:40 +01:00
Rob Bradford
72741c557a actions: Add "--all --tests" to clippy in quality action
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
b2608ca285 vmm: cpu: Fix clippy issues inside test
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
74fe032827 vm-device: bus: Fix clippy issues inside tests
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
40a2e3b462 vhost_user_block: Fix clippy issue
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
abc6672f21 qcow: Fix clippy issues inside tests
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
053c9e4d73 devices: serial: Fix clippy issues inside tests
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
9ea19852b5 arch: x86_64: Fix clippy issues inside tests
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
Rob Bradford
9871ff454b arch_gen: mpspec: Fix clippy issues inside tests
Found by:  cargo clippy --all-features --all --tests

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-26 09:32:46 +01:00
dependabot-preview[bot]
e817b4f36c build(deps): bump crossbeam-utils from 0.8.0 to 0.8.1
Bumps [crossbeam-utils](https://github.com/crossbeam-rs/crossbeam) from 0.8.0 to 0.8.1.
- [Release notes](https://github.com/crossbeam-rs/crossbeam/releases)
- [Changelog](https://github.com/crossbeam-rs/crossbeam/blob/master/CHANGELOG.md)
- [Commits](https://github.com/crossbeam-rs/crossbeam/compare/crossbeam-utils-0.8.0...crossbeam-utils-0.8.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-26 08:32:02 +00:00
Rob Bradford
6f63cd00eb vmm: device_manager: Remove ActivatedBackend struct
This was used for vhost-user self spawning but no longer has any users.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 20:47:43 +01:00
Wei Liu
a6ad85dc40 hypervisor: x86: handle more registers in emulator
List all GPRs documented in Intel's SDM.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2020-11-25 20:18:40 +01:00
Samuel Ortiz
0f4f30dbde hypervisor: x86: Add MOV to the emulator instruction map
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
fe5401223b hypervisor: x86: Emulate MOV
And add a few unit tests based on a Mock platform.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
12b7a498d9 hypervisor: x86: Add an instruction emulator
The emulator gets a CPU state from a CpuStateManager instance, emulates
the passed instructions stream and returns the modified CPU state.

The emulator is a skeleton for now since it comes with an empty
instruction mnemonic map.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
1fc97e91a4 hypervisor: x86: Add an InstructionHandler interface
And an InstructionMap helper structure to map x86 mnemonic codes
to instruction handlers.

Any instruction emulation implementation should then boil down with
implementing InstructionHandler for any supported mnemonic.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
fc5d6c96be hypervisor: x86: Add a minimal CpuStateManager implementation
Minimal will be defined by the amount of emulated instructions.
Carrying all GPRs, all CRs, segment registers and table registers should
cover quite a few instructions.

Co-developed-by: Wei Liu <liuwe@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
546778ebfb hypervisor: x86: Add a CpuStateManager interface
For efficiently emulating x86 instructions, we need to build and pass a
CPU state copy/reference to instruction emulation handlers. Those handlers
will typically modify the CPU state and let the caller commit those
changes back through the PlatformEmulator trait set_cpu_state method.

Hypervisors typically have internal CPU state structures, that maps back
to the correspinding kernel APIs. By implementing the CpuState trait,
instruction emulators will be able to directly work on CPU state
instances that are directly consumable by the underlying hypervisor and
its kernel APIs.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
f0360aff83 hypervisor: Architecture agnostic instruction emulation interface
In order to emulate instructions, we need a way to get access to some of
the guest resources. The PlatformEmulator interface provides guest
memory and CPU state access to emulator implementations.

Typically, an hypervisor will implement PlatformEmulator for architecture
specific instruction emulators to build their framework on top of.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Samuel Ortiz
ae96aeda65 arch: Move the gdt module to the hypervisor crate
We will need the GDT API for the hypervisor's x86 instruction
emulator implementation, it's better if the arch crate depends on the
hypervisor one rather than the other way around.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-25 17:02:11 +01:00
Rob Bradford
b5b97f7b05 vmm: When receiving a migration store the config
The configuration is stored separately to the Vm in the VMM. The failure
to store the config was preventing the VM from shutting down correctly
as Vmm::vm_delete() checks for the presence of the config.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 01:27:26 +01:00
Rob Bradford
9fc2613b41 vm-device: bus: Remove unwrap() when upgrading weak reference
Rather return the None to the caller to handle instead. This removes the
source of a potential panic.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 01:27:26 +01:00
Rob Bradford
44b5a19209 bin: ch-remote: Fix typo in error message
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 01:27:26 +01:00
Rob Bradford
df6b52924f vmm: Unlink created socket after source connects
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 01:27:26 +01:00
Rob Bradford
1ab1341775 vmm: seccomp_filters: Add KVM_GET_DIRTY_LOG to permitted calls
The live migration support added use of this ioctl but it wasn't
included in the permitted list.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-25 01:27:26 +01:00
dependabot-preview[bot]
a29f7ffcc7 build(deps): bump signal-hook from 0.2.0 to 0.2.1
Bumps [signal-hook](https://github.com/vorner/signal-hook) from 0.2.0 to 0.2.1.
- [Release notes](https://github.com/vorner/signal-hook/releases)
- [Changelog](https://github.com/vorner/signal-hook/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vorner/signal-hook/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-25 00:26:27 +00:00
dependabot-preview[bot]
eda39d0469 build(deps): bump rust-argon2 from 0.8.2 to 0.8.3
Bumps [rust-argon2](https://github.com/sru-systems/rust-argon2) from 0.8.2 to 0.8.3.
- [Release notes](https://github.com/sru-systems/rust-argon2/releases)
- [Changelog](https://github.com/sru-systems/rust-argon2/blob/master/CHANGELOG.md)
- [Commits](https://github.com/sru-systems/rust-argon2/compare/0.8.2...0.8.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-24 09:38:49 +00:00
dependabot-preview[bot]
de0c24810e build(deps): bump syn from 1.0.50 to 1.0.51
Bumps [syn](https://github.com/dtolnay/syn) from 1.0.50 to 1.0.51.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.50...1.0.51)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-24 06:01:35 +00:00
Samuel Ortiz
fadeb98c67 cargo: Bulk update
Includes updates for ssh2, cc, syn, tinyvec, backtrace micro-http and libssh2.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-23 12:25:31 +01:00
Samuel Ortiz
1fc0b94fcd cargo: Move to crates.io vm-memory 0.4.0
vm-memory 0.4.0 now contains all our fixes.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-23 10:55:13 +01:00
Samuel Ortiz
ef4c896bbf arch: aarch64: Fix rust 1.48 clippy warnings
methods called `new` usually return `Self`
See https://rust-lang.github.io/rust-clippy/master/index.html#new_ret_no_self

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-20 17:09:28 +01:00
Samuel Ortiz
72bb255ff6 pci, virtio-devices: Fix rust 1.48 clippy warnings
Unnecessary closure used to substitute value for `Option::None`
See https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-20 17:09:28 +01:00
Samuel Ortiz
a406d90059 arch: Fix rust 1.48 clippy warnings
const should not be mutable types:
https://rust-lang.github.io/rust-clippy/master/index.html#declare_interior_mutable_const

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-20 17:09:28 +01:00
dependabot-preview[bot]
0dfffee6ba build(deps): bump cc from 1.0.62 to 1.0.63
Bumps [cc](https://github.com/alexcrichton/cc-rs) from 1.0.62 to 1.0.63.
- [Release notes](https://github.com/alexcrichton/cc-rs/releases)
- [Commits](https://github.com/alexcrichton/cc-rs/compare/1.0.62...1.0.63)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-18 23:37:01 +00:00
Rob Bradford
0fec326582 hypervisor, vmm: Remove shared ownership of VmmOps
This interface is used by the vCPU thread to delegate responsibility for
handling MMIO/PIO operations and to support different approaches than a
VM exit.

During profiling I found that we were spending 13.75% of the boot CPU
uage acquiring access to the object holding the VmmOps via
ArcSwap::load_full()

    13.75%     6.02%  vcpu0            cloud-hypervisor    [.] arc_swap::ArcSwapAny<T,S>::load_full
            |
            ---arc_swap::ArcSwapAny<T,S>::load_full
               |
                --13.43%--<hypervisor::kvm::KvmVcpu as hypervisor::cpu::Vcpu>::run
                          std::sys_common::backtrace::__rust_begin_short_backtrace
                          core::ops::function::FnOnce::call_once{{vtable-shim}}
                          std::sys::unix:🧵:Thread:🆕:thread_start

However since the object implementing VmmOps does not need to be mutable
and it is only used from the vCPU side we can change the ownership to
being a simple Arc<> that is passed in when calling create_vcpu().

This completely removes the above CPU usage from subsequent profiles.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-19 00:16:02 +01:00
dependabot-preview[bot]
6a591ca81d build(deps): bump pin-project from 1.0.1 to 1.0.2
Bumps [pin-project](https://github.com/taiki-e/pin-project) from 1.0.1 to 1.0.2.
- [Release notes](https://github.com/taiki-e/pin-project/releases)
- [Changelog](https://github.com/taiki-e/pin-project/blob/master/CHANGELOG.md)
- [Commits](https://github.com/taiki-e/pin-project/compare/v1.0.1...v1.0.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-18 22:15:58 +00:00
dependabot-preview[bot]
a525f8365f build(deps): bump unicode-normalization from 0.1.15 to 0.1.16
Bumps [unicode-normalization](https://github.com/unicode-rs/unicode-normalization) from 0.1.15 to 0.1.16.
- [Release notes](https://github.com/unicode-rs/unicode-normalization/releases)
- [Commits](https://github.com/unicode-rs/unicode-normalization/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-18 22:15:49 +00:00
Rob Bradford
f271378811 tests: Wait for reboot in test_virtio_watchdog()
Aim to reduce flaky failures of this test by waiting for the VM to come
back after a reboot.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 18:27:34 +01:00
Rob Bradford
78b9edf848 tests: Get output from firmware and Linux for test_large_vm()
As we switched to focal for this test we no longer get any output during
the boot unless serial is used over virtio-console.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 18:27:34 +01:00
Rob Bradford
d0aebfb922 tests: Increase time waited for hotplugged memory to appear
There have been a lot of flakes around tests such as
test_virtio_fs_hotplug_dax_on_w_vhost_user_fs_daemon() or
test_virtio_fs_hotplug_dax_on() which all try and hotplug memory.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 18:27:34 +01:00
Rob Bradford
f913dd6150 tests: Add integration test to force io_uring off for block
Fixes: #1561

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 11:47:54 +01:00
Rob Bradford
c622278030 config, device_manager: Add support for disabling io_uring for testing
Add config parameter to --disk called "_disable_io_uring" (the
underscore prefix indicating it is not for public consumpion.) Use this
option to disable io_uring if it would otherwise be used.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 11:47:54 +01:00
Rob Bradford
d1d0421103 main: Remove --net-backend and --block-backend from cloud-hypervisor
Remove the parameters used for self spawning from the cloud-hypervisor
binary.

See: #1925

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 11:46:32 +01:00
Rob Bradford
fb70baece0 tests: Make integration test use vhost_user_{net,block} binaries
With the removal of vhost-user self-spawning support we should migrate
the tests to use the binaries so that we can remove the functionality
from the cloud-hypervisor binary itself.

See: #1925

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-18 11:46:32 +01:00
dependabot-preview[bot]
0159ab93e1 build(deps): bump unicode-normalization from 0.1.14 to 0.1.15
Bumps [unicode-normalization](https://github.com/unicode-rs/unicode-normalization) from 0.1.14 to 0.1.15.
- [Release notes](https://github.com/unicode-rs/unicode-normalization/releases)
- [Commits](https://github.com/unicode-rs/unicode-normalization/commits)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-18 09:01:29 +00:00
dependabot-preview[bot]
609d704168 build(deps): bump smallvec from 1.4.2 to 1.5.0
Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.4.2 to 1.5.0.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](https://github.com/servo/rust-smallvec/compare/v1.4.2...v1.5.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-17 21:56:51 +00:00
Rob Bradford
3ac9b6c404 vmm: Implement live migration
Now the VM is paused/resumed by the migration process itself.

0. The guest configuration is sent to the destination
1. Dirty page log tracking is started by start_memory_dirty_log()
2. All guest memory is sent to the destination
3. Up to 5 attempts are made to send the dirty guest memory to the
   destination...
4. ...before the VM is paused
5. One last set of dirty pages is sent to the destination
6. The guest is snapshotted and sent to the destination
7. When the migration is completed the destination unpauses the received
   VM.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-17 16:57:11 +00:00
Rob Bradford
b34703d29f vmm: vm: Add dirty log related passthrough methods
This allows code running in the VMM to access the VM's MemoryManager's
functionality for managing the dirty log including resetting it but also
generating a table.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-17 16:57:11 +00:00
Rob Bradford
cf6763dfdb vmm: migration: Add missing response check
A read and check of the response was missing from when sending the
memory to the destination.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-17 16:57:11 +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