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>
This commit adds the memory layout design for AArch64 in
`arch/src/aarch64/layout.rs` and related changes in
`arch/src/lib.rs` to make sure this commit can build.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Now the flow of both architectures are aligned to:
1. load kernel
2. create VCPU's
3. configure system
4. start VCPU's
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
This is a preparing commit to build and test CH on AArch64. All building
issues were fixed, but no functionality was introduced.
For X86, the logic of code was not changed at all.
For ARM, the architecture specific part is still empty. And we applied
some tricks to workaround lint warnings. But such code will be replaced
later by other commits with real functionality.
Signed-off-by: Michael Zhao <michael.zhao@arm.com>
Use the ACPI feature to control whether to build the mptable. This is
necessary as the mptable and ACPI RSDP table can easily overwrite each
other leading to it failing to boot.
TEST=Compile with default features and see that --cpus boot=48 now
works, try with --no-default-features --features "pci" and observe the
--cpus boot=48 also continues to work.
Fixes: #1132
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The setup_mptables() call which is not used on ACPI builds has a side
effect of testing whether there was enough RAM which one of the unit
tests was relying on. Add a similar check for the RSDP address.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Fill and write to guest memory the necessary boot module
structure to allow a guest using the PVH boot protocol
to load an initramfs image.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
We need the project to rely on kvm-bindings and kvm-ioctls branches
which include the serde derive to be able to serialize and deserialize
some KVM structures.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Commit 2adddce2 reorganized the crate for a cleaner multi architecture
(x86_64 and aarch64) support.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
* load the initramfs File into the guest memory, aligned to page size
* finally setup the initramfs address and its size into the boot params
(in configure_64bit_boot)
Signed-off-by: Damjan Georgievski <gdamjan@gmail.com>
We set it to 0xff, which is for unregistered loaders.
The kernel checks that the bootloader ID is set when e.g. loading
ramdisks, so not setting it when we get a bootparams header from the
loader will prevent the kernel from loading ramdisks.
Fixes: #918
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Validate correct GDT entries, initial segment configuration, and control
register bits that are required by PVH boot protocol.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Expand the unit tests to cover the configure_system() code when
using the PVH boot protocol. Verify the method for adding memory
map table entries in the format specified by PVH boot protocol.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Fill the hvm_start_info and related memory map structures as
specified in the PVH boot protocol. Write the data structures
to guest memory at the GPA that will be stored in %rbx when
the guest starts.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
In order to properly initialize the kvm regs/sregs structs for
the guest, the load_kernel() return type must specify which
boot protocol to use with the entry point address it returns.
Make load_kernel() return an EntryPoint struct containing the
required information. This structure will later be used
in the vCPU configuration methods to setup the appropriate
initial conditions for the guest.
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Create supporting definitions to use the hvm start info and memory
map table entry struct definitions from the linux-loader crate in
order to enable PVH boot protocol support
Signed-off-by: Alejandro Jimenez <alejandro.j.jimenez@oracle.com>
Since the kvm crates now depend on vmm-sys-util, the bump must be
atomic.
The kvm-bindings and ioctls 0.2.0 and 0.4.0 crates come with a few API
changes, one of them being the use of a kvm_ioctls specific error type.
Porting our code to that type makes for a fairly large diff stat.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Remove ACPI table creation from arch crate to the vmm crate simplifying
arch::configure_system()
GuestAddress(0) is used to mean no RSDP table rather than adding
complexity with a conditional argument or an Option type as it will
evaluate to a zero value which would be the default anyway.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add basic processor details to the DSDT table. The code has to be
slightly convoluted (with the second pass over the cpu_devices vector)
in order to keep the objects alive long enough in order to be able to
take their reference.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
We need to rely on the latest kvm-ioctls version to benefit from the
recent addition of unregister_ioevent(), allowing us to detach a
previously registered eventfd to a PIO or MMIO guest address.
Because of this update, we had to modify the current constraint we had
on the vmm-sys-util crate, using ">= 0.1.1" instead of being strictly
tied to "0.2.0".
Once the dependency conflict resolved, this commit took care of fixing
build issues caused by recent modification of kvm-ioctls relying on
EventFd reference instead of RawFd.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
To avoid a clash with to_bytes() for the unsigned integer types that is
coming in a future release.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This was verified by comparing the ASL from disassembling the DSDT
before and after. All the individual AML components themselves are also
unit tested.
Fixes: #352
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The virtual IOMMU exposed through virtio-iommu device has a dependency
on ACPI. It needs to expose the device ID of the virtio-iommu device,
and all the other devices attached to this virtual IOMMU. The IDs are
expressed from a PCI bus perspective, based on segment, bus, device and
function.
The guest relies on the topology description provided by the IORT table
to attach devices to the virtio-iommu device.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The PCI Express Firmware specification says that the region may
be included in the E820 tables (but it must always be in the ACPI
tables.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The PCI Express Firmware spec says that the region to be used for PCI
MMCONFIG should be reserved as part of the motherboard's resources in
the ACPI tables.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The PCI MMCONFIG area must be below 4GiB and must not be part of the
device space. Shrink the device area and put the PCI MMCONFIG region
above it.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Patch the table with the currently used constants. This will be relevant
when we want to adjust the size of the PCI device area to accomodate the
PCI MMCONFIG region.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
These are part of RAM and are used as the initial page table entries for
booting the OS and firmware (identity mapping.)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Using the existing layout module start documenting the major regions of
RAM and those areas that are reserved. Some of the constants have also
been renamed to be more consistent and some functions that returned
constant variables have been replaced.
Future commits will move more constants into this file to make it the
canonical source of information about the memory layout.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The last byte was missing from the E820 RAM area. This was due to the
function using the last address relative to the first address in the
range to calculate the size. This incorrectly calculated the size by
one. This produced incorrect E820 tables like this:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001ffffffe] usable
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
After the 32-bit gap the memory is shared between the devices and the
RAM. Ensure that the ACPI tables correctly indicate where the RAM ends
and the device area starts by patching the precompiled tables. We get
the following valid output now from the PCI bus probing (8GiB guest)
[ 0.317757] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window]
[ 0.319035] pci_bus 0000:00: resource 5 [io 0x0d00-0xffff window]
[ 0.320215] pci_bus 0000:00: resource 6 [mem 0x000a0000-0x000bffff window]
[ 0.321431] pci_bus 0000:00: resource 7 [mem 0xc0000000-0xfebfffff window]
[ 0.322613] pci_bus 0000:00: resource 8 [mem 0x240000000-0xfffffffff window]
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
There was an off-by-error in the result making the hole one byte too
big and ending at an address too high.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The starting length of the MCFG table was too long resulting in the
kernel trying to get extra MCFG entries from the table that weren't
there resulting in the following error message from the kernel:
PCI: no memory for MCFG entries
The MCFG table also has an 8 bytes of padding at the start before the
table begins.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The command "cargo build --no-default-features" does not recursively
disable the default features across the workspace. Instead add an acpi
feature at the top-level, making it default, and then make that feature
conditional on all the crate acpi features.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Put the ACPI support behind a feature and ensure that the code compiles
without that feature by adding an extra build to Travis.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Add an I/O port "device" to handle requests from the kernel to shutdown
or trigger a reboot, borrowing an I/O used for ACPI on the Q35 platform.
The details of this I/O port are included in the FADT
(SLEEP_STATUS_REG/SLEEP_CONTROL_REG/RESET_REG) with the details of the
value to write in the FADT for reset (RESET_VALUE) and in the DSDT for
shutdown (S5 -> 0x05)
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The DSDT must declare the interrupt used by the serial device. This
helps the guest kernel matching the right interrupt to the 8250 serial
device. This is mandatory in case the IRQ routing is handled by ACPI, as
we must let ACPI know what do do with pin based interrupts.
One thing to notice, if we were using acpi=noirq from the kernel command
line, this would mean ACPI is not in charge of the IRQ routing, and the
device COM1 declaration would not be needed.
One additional requirement is to provide the appropriate interrupt
source override for the legacy ISA interrupts (0-15), which will give
the right information to the guest kernel about how to allocate the
associated IRQs.
Because we want to keep the MADT as simple as possible, and given that
our only device requiring pin based interrupt is the serial device, we
choose to only define the pin 4.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Only add the ACPI PNP device for the COM1 serial port if it is not
turned off with "--serial off"
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Currently this has a hardcoded range from 32GiB to 64GiB for the 64-bit PCI
range. It should range from the top of ram to 64GiB.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
The MCFG table contains some PCI configuration details in particular
details of where the enhanced configuration space is.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
This provides important APIC configuration details for the CPU. Even
though it duplicates some of the information already included in the
mptable it is necessary when booting with ACPI as the mptable is not
used.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Latest clippy version complains about our existing code for the
following reasons:
- trait objects without an explicit `dyn` are deprecated
- `...` range patterns are deprecated
- lint `clippy::const_static_lifetime` has been renamed to
`clippy::redundant_static_lifetimes`
- unnecessary `unsafe` block
- unneeded return statement
All these issues have been fixed through this patch, and rustfmt has
been run to cleanup potential formatting errors due to those changes.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
The linux-loader crate has been updated with a regnerated bootparams.rs
which has changed the API slightly. Update to the latest linux-loader
and adapt the code to reflect the changes:
* e820_map is renamed to e820_table (and all similar variables updated)
* e820entry is renamed to boot_e820_entry
* The E820 type constants are not no longer included
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
Update all dependencies with "cargo upgrade" with the exception of
vmm-sys-utils which needs some extra porting work.
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
In the context of VFIO, we use Vt-d, which means we rely on an IOMMU.
Depending on the IOMMU capability, and in particular if it is not able
to perform SC (Snooping Control), the memory will not be tagged as WB
by KVM, but instead the vCPU will rely on its MTRR/PAT MSRs to find the
appropriate way of interact with specific memory regions.
Because when Vt-d is not involved KVM sets the memory as WB (write-back)
the VMM should set the memory default as WB. That's why this patch sets
the MSR MTRRdefType with the default memory type being WB.
One thing that it is worth noting is that we might have to specifically
create some UC (uncacheable) regions if we see some issues with the
ranges corresponding to the MMIO ranges that should trap.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
We add a Reserved region type at the end of the memory hole to prevent
32-bit devices allocations to overlap with architectural address ranges
like IOAPIC, TSS or APIC ones.
Eventually we should remove that reserved range by allocating all the
architectural ranges before letting 32-bit devices use the memory hole.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
We want to be able to differentiate between memory regions that must be
managed separately from the main address space (e.g. the 32-bit memory
hole) and ones that are reserved (i.e. from which we don't want to allow
the VMM to allocate address ranges.
We are going to use a reserved memory region for restricting the 32-bit
memory hole from expanding beyond the IOAPIC and TSS addresses.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
With this new AddressAllocator as part of the SystemAllocator, the
VMM can now decide with finer granularity where to place memory.
By allocating the RAM and the hole into the MMIO address space, we
ensure that no memory will be allocated by accident where the RAM or
where the hole is.
And by creating the new MMIO hole address space, we create a subset
of the entire MMIO address space where we can place 32 bits BARs for
example.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
With the adoption for rust-vmm linux-loader crate some small changes
were needed to update the unit tests to reflect this change:
* configure_system now takes an extra parameter
* the e820 entry structure comes from the linux-loader crate
Signed-off-by: Rob Bradford <robert.bradford@intel.com>
VMM may load different format kernel image to start guest, we currently
only have elf loader support, so add bzimage loader support in case
that VMM would like to load bzimage.
Signed-off-by: Cathy Zhang <cathy.zhang@intel.com>
In order to have access to the newly added signal_msi() function
from the kvm-ioctls crate, this commit updates the version of the
kvm-ioctls to the latest one.
Because set_user_memory_region() has been swtiched to "unsafe", we
also need to handle this small change in our cloud-hypervisor code
directly.
Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Add the BSD and Apache license.
Make all crosvm references point to the BSD license.
Add the right copyrights and identifier to our VMM code.
Add Intel copyright to the vm-virtio and pci crates.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Both crates are based on Firecracker commit 9cdb5b2.
They are ported to the new memory model and tests have been fixed
accordingly.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
