Commit Graph

3003 Commits

Author SHA1 Message Date
Samuel Ortiz
7dc92d1dac hypervisor: emulator: Decoding loop restructuring
In preparation for the instruction fetching step, we modify the decoding
loop so that we can check what the last decoding error is.

We also switch to explictly using decode_out() which removes a 32 bytes
copy compared to decode().

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
7a4edecd29 hypervisor: x86: Add an address linearization method to CpuStateManager
From a CPU state and a segment, we can translate a logical (segmented)
address into a linear one.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
d419e30df1 hypervisor: x86: Add a SegmentRegistorOps trait
In order to validate emulated memory accesses, we need to be able to get
all the segments descriptor attributes.

This is done by abstracting the SegmentRegister attributes through a
trait that each hypervisor will have to implement.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
3faffcb087 hypervisor: emulator: Add a CPU mode getter to CpuStateManager
We need to be able to build the CPU mode from its state in order to
start implementing mode related checks in the x86 emulator.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
Samuel Ortiz
b3a1f5f1be hypervisor: Start moving register definitions to the hypervisor crate
Most of arch/src/x86_64/regs.rs will eventually move unde
hypervisor/src/x86/regs.rs.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-30 13:09:19 +00:00
dependabot-preview[bot]
2bc5119730 build(deps): bump syn from 1.0.52 to 1.0.53
Bumps [syn](https://github.com/dtolnay/syn) from 1.0.52 to 1.0.53.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.52...1.0.53)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-30 09:09:26 +00:00
dependabot-preview[bot]
5100bc94cc build(deps): bump syn from 1.0.51 to 1.0.52
Bumps [syn](https://github.com/dtolnay/syn) from 1.0.51 to 1.0.52.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.51...1.0.52)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-28 00:28:08 +00:00
dependabot-preview[bot]
6bf9fe487b build(deps): bump pnet from 0.26.0 to 0.27.2
Bumps [pnet](https://github.com/libpnet/libpnet) from 0.26.0 to 0.27.2.
- [Release notes](https://github.com/libpnet/libpnet/releases)
- [Commits](https://github.com/libpnet/libpnet/compare/v0.26.0...v0.27.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
2020-11-27 23:56:02 +00:00
Rob Bradford
d1a23d9085 docs: Add instructions for using perf
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-27 19:19:14 +01:00
Rob Bradford
05f785fa88 build: Move timeouts to integration test blocks
If we rely on timeouts at the top level we can get builds being aborted
simply because they took too long to be scheduled rather than because
the actual integration tests took too long.

Signed-off-by: Rob Bradford <robert.bradford@intel.com>
2020-11-27 19:18:39 +01:00
Samuel Ortiz
a3d957ba4d hypervisor: emulator: Clean the MockVMM initialization path
Separate the standalone _init_and_run() function into 2 MockVMM methods:
new() and emulate_insn().

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-27 19:17:35 +01:00
Samuel Ortiz
5bd63efa45 hypervisor: emulator: Move MockVMM into a shared test module
The MockVMM platform will be used by other instructions emulation
implementations, but also by the emulator framework.

Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
2020-11-27 19:17:35 +01:00
Wei Liu
66b001665f hypervisor: x86: only calculate address when necessary in MOV emulation
Only calculate the address when the operand is memory.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2020-11-26 16:12:23 +01:00
Wei Liu
c6aea5af5d hypervisor: x86: drop an extraneous box indirection
There is no need to put a box into another box.

Signed-off-by: Wei Liu <liuwe@microsoft.com>
2020-11-26 12:02:47 +00:00
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