Since calling `KVM_GET_ONE_REG` before `KVM_VCPU_INIT` will
result in an error: Exec format error (os error 8). This commit
decouples the vCPU init process from `configure_vcpus`. Therefore
in the process of restoring the vCPUs, these vCPUs can be
initialized separately before started.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The value of GIC register `GICR_TYPER` is needed in restoring
the GIC states. This commit adds a field in the GIC device struct
and a method to construct its value.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
In AArch64 systems, the state of GIC device can only be
retrieved from `KVM_GET_DEVICE_ATTR` ioctl. Therefore to implement
saving/restoring the GIC states, we need to make sure that the
GIC object (either the file descriptor or the device itself) can
be extracted after the VM is started.
This commit refactors the code of GIC creation by adding a new
field `gic_device_entity` in device manager and methods to set/get
this field. The GIC object can be therefore saved in the device
manager after calling `arch::configure_system`.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit adds a function which allows to save RDIST pending
tables to the guest RAM, as well as unit test case for it.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit implements the `get_device_attr` method for the
`KVM_GET_DEVICE_ATTR` ioctl. This ioctl will be used in retrieving
the GIC status.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit moves the GIC-related code to a separate module.
Therefore the implementation of GIC registers can be introduced
to the new module.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit ports code from firecracker and refactors the existing
AArch64 code as the preparation for implementing save/restore
AArch64 vCPU, including:
1. Modification of `arm64_core_reg` macro to retrive the index of
arm64 core register and implemention of a helper to determine if
a register is a system register.
2. Move some macros and helpers in `arch` crate to the `hypervisor`
crate.
3. Added related unit tests for above functions and macros.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Misspellings were identified by https://github.com/marketplace/actions/check-spelling
* Initial corrections suggested by Google Sheets
* Additional corrections by Google Chrome auto-suggest
* Some manual corrections
Signed-off-by: Josh Soref <jsoref@users.noreply.github.com>
Inject CPUID leaves for advertising KVM HyperV support when the
"kvm_hyperv" toggle is enabled. Currently we only enable a selection of
features required to boot.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Shrink GICDevice trait to contain hypervisor agnostic API's only, which
are used in generating FDT.
Move all KVM specific logic into KvmGICDevice trait.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This commit enables some mmio-related integration test cases on
AArch64, including:
* some vhost_user test cases
* virtio-blk test cases
* pmem test cases
Also this commit contains a bug fix in creating virtio-blk device.
Previously, when creating the FDT, the virtio-blk device was
labeled in the reverse order of address allocation.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
The retry order to create virtual GIC is GICv3-ITS, GICv3 and GICv2.
But there was not log message to show what was finally created.
The log messages also mute the warning for unused "log" crate.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
SGX expects the EPC region to be reported as "reserved" from the e820
table. This patch adds a new entry to the table if SGX is enabled.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The support for SGX is exposed to the guest through CPUID 0x12. KVM
passes static subleaves 0 and 1 from the host to the guest, without
needing any modification from the VMM itself.
But SGX also relies on dynamic subleaves 2 through N, used for
describing each EPC section. This is not handled by KVM, which means
the VMM is in charge of setting each subleaf starting from index 2
up to index N, depending on the number of EPC sections.
These subleaves 2 through N are not listed as part of the supported
CPUID entries from KVM. But it's important to set them as long as index
0 and 1 are present and indicate that SGX is supported.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Based on the presence of one or multiple SGX EPC sections from the VM
configuration, the MemoryManager will allocate a contiguous block of
guest address space to hold the entire EPC region. Within this EPC
region, each EPC section is memory mapped.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The type is now hypervisor::Vm. Switch from KVM specific name vm_fd to a
generic name just like 8186a8eee6 ("vmm: interrupt: Rename vm_fd").
No functional change.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
The OVMF firmware loops around looking for an entry marking the end of
the table. Without this entry processing the tables is an infinite loop.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Taken from crosvm: 44336b913126d73f9f8d6854f57aac92b5db809e and adapted
for Cloud Hypervisor.
This is basic and incomplete support but Linux correctly finds the DMI
data based on this:
root@clr-c6ed47bc1c9d473d9a3a8bddc50ee4cb ~ # dmesg | grep -i dmi
[ 0.000000] DMI: Cloud Hypervisor cloud-hypervisor, BIOS 0
root@clr-c6ed47bc1c9d473d9a3a8bddc50ee4cb ~ # dmesg | grep -i smbio
[ 0.000000] SMBIOS 3.2.0 present.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This commit fixes some warnings introduced in the previous
hyperviosr crate PR.Removed some unused variables from arch/aarch64
module.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Start moving the vmm, arch and pci crates to being hypervisor agnostic
by using the hypervisor trait and abstractions. This is not a complete
switch and there are still some remaining KVM dependencies.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
There are two CPUID leaves for handling CPU topology, 0xb and 0x1f. The
difference between the two is that the 0x1f leaf (Extended Topology
Leaf) supports exposing multiple die packages.
Fixes: #1284
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The extended topology leaf (0x1f) also needs to have the APIC ID (which
is the KVM cpu ID) set. This mirrors the APIC ID set on the 0xb topology
leaf
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently, not every feature of the cloud-hypervisor is enabled
on AArch64, which means that on AArch64 machines, the
`run_unit_tests.sh` needs to be tailored and some unit test cases
should be run on x86_64 only.
Also this commit fixes the typo and unifies `Arm64` and `AArch64`
in the AArch64 document.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
Implemented GSI allocator and system allocator for AArch64.
Renamed some layout definitions to align more code between architectures.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
For correctness, when the CPUID supports the LA57 feature, the VMM sets
the CR4.LA57 register, which means a fifth level of page table might be
needed. Even if it's not needed because the kernel should not use
addresses over 1GiB, it's better to define this new level anyway.
This patch only applies to the Linux boot codepath, which means it
affects both vmlinux without PVH and bzImage binaries. The bzImage
does not need this since the page tables and CR4 registers are set in
the decompression code from the kernel.
And for vmlinux with PVH, if we follow the PVH specification, the kernel
must be responsible for setting things up, but the implementation is
missing. This means for now that PVH does not support LA57 with 5 levels
of paging.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
In case the host CPU exposes the support for LA57 feature through its
cpuid, the CR4.LA57 bit is enabled accordingly.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
When booting VM on AArch64 machines, we need to construct the
flattened device tree before loading kernel. Hence here we add
the implementation of the flattened device tree for AArch64.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
As on AArch64 systems we need register mpidr to create the
flattened device tree, here in this commit we add ported AArch64
register implementation from Firecracker and related changes to
make this commit build.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit adds ported code of Generic Interrupt Controller (GIC)
software implementation for AArch64, including both GICv2 and
GICv3 devices. These GIC devices are actually emulated by the
host kernel through KVM and will be used in the guest VM as the
interrupt controller for AArch64.
Signed-off-by: Henry Wang <Henry.Wang@arm.com>
