This is the first change to Cloud Hypervisor in a series of changes
intended to increase the max number of supported vCPUs in guest VMs,
which is currently limited to 255 (254 on x86_64).
No user-visible/behavior changes are expected as a result of
applying this patch, as the type of boot_cpus and related
fields in config structs remains u8 for now, and all configuration
validations remain the same.
Signed-off-by: Barret Rhoden <brho@google.com>
Signed-off-by: Neel Natu <neelnatu@google.com>
Signed-off-by: Ofir Weisse <oweisse@google.com>
Signed-off-by: Peter Oskolkov <posk@google.com>
This allows us to enable/disable the fw_cfg device via the cli
We can also now upload files into the guest vm using fw_cfg_items
via the cli
Signed-off-by: Alex Orozco <alexorozco@google.com>
This allows the fw_cfg device to be recognized by the guest linux
kernel. This becomes more relavnt in the following cl where I add
the option to load files into the guest via fw_cfg. The Linux kernel
already has a fw_cfg driver that will automatically load these files
under /sys when CONFIG_FW_CFG_SYSFS is enabled in the kernel config
For arm we must add fw_cfg to the devices tree
Signed-off-by: Alex Orozco <alexorozco@google.com>
We pass a reference to the guest memory when we create the device
in DeviceManager. This allows us to access the guest memory for DMA.
Signed-off-by: Alex Orozco <alexorozco@google.com>
The acpi tables are created in the same place the acpi tables would be
created for the regular bootflow, except here we add them to the
fw_cfg device to be measured by the fw and then the fw will put the
acpi tables into memory.
Signed-off-by: Alex Orozco <alexorozco@google.com>
The kernel and initramfs are passed to the fw_cfg device as
file references. The cmdline is passed directly.
Signed-off-by: Alex Orozco <alexorozco@google.com>
Here we add the fw_cfg device as a legacy device to the device manager.
It is guarded behind a fw_cfg flag in vmm at creation of the
DeviceManager. In this cl we implement the fw_cfg device with one
function (signature).
Signed-off-by: Alex Orozco <alexorozco@google.com>
This partially reverts
ed8f347fe62edd33355ad771615296ff8edc8d33 from #7183 and
6277d7d5f20126945904fefdf5fb990bbcce5ae8 from #7201.
# Output how it was merged for v47 (#7066)
```
Error: Cloud Hypervisor exited with the following chain of errors:
0: Error booting VM
1: The VM could not boot
2: Error manipulating firmware file
3: No such file or directory (os error 2)
Debug Info: VmBoot(VmBoot(FirmwareFile(Os { code: 2, kind: NotFound, message: "No such file or directory" })))
```
# Output after #7183 and #7201
```
cloud-hypervisor: 31.385730ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:27 -- Error: Cloud Hypervisor exited with the following chain of errors:
cloud-hypervisor: 31.417961ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:39 -- 0: Error booting VM
cloud-hypervisor: 31.448078ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:39 -- 1: The VM could not boot
cloud-hypervisor: 31.486711ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:39 -- 2: Error manipulating firmware file
cloud-hypervisor: 31.513331ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:39 -- 3: No such file or directory (os error 2)
cloud-hypervisor: 31.548037ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:44 --
cloud-hypervisor: 31.568045ms: <main> ERROR:/home/pschuster/dev/cloud-hypervisor/src/lib.rs:45 -- Debug Info: VmBoot(VmBoot(FirmwareFile(Os { code: 2, kind: NotFound, message: "No such file or directory" })))
```
The "proper logger" has indeed the advantage that messages can
be gracefully redirected to log files etc. However, this makes the
error message hardly readable.
Therefore, I propose to use error!() only for runtime errors messages
but not a pretty-printed version of those.
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>
On-behalf-of: SAP philipp.schuster@sap.com
Error::UefiLoad is required for load_firmware to propagate errors
encountered, define it for riscv64.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
uefi_flash field in memory_manager is required for uefi loading and
booting, enable it for riscv64 architecture.
Signed-off-by: Ruoqing He <heruoqing@iscas.ac.cn>
The option parser did not allow quoting any special characters, which
means that some strings could not be passed via command-line options.
Fix this by allowing double quotes to quote all the special characters,
such as '@', ',', '[', and ']'. '"' can be escaped by doubling it. The
implementation uses some tricks to stay modular.
Signed-off-by: Demi Marie Obenour <demiobenour@gmail.com>
rustc 1.90.0-beta.1 (788da80fc 2025-08-04) suggests using library
feature `unsigned_is_multiple_of`. It is stabled in Rust 1.87.0.
Update image to 20250807-0 since MSRV in Dockerfile is updated.
Signed-off-by: Songqian Li <sionli@tencent.com>
Signed-off-by: Bo Chen <bchen@crusoe.ai>
Now 'create_acpi_tables_internal()' can generate ACPI tables with
different dsdt offset, so that it can be reused for generating ACPI
tables for `fw_cfg`.
Signed-off-by: Bo Chen <bchen@crusoe.ai>
Signed-off-by: Alex Orozco <alexorozco@google.com>
Optimize lychee workflow to check only changed
files in pull requests, avoiding excessive API
calls to prevent rate limits.
Fixes#7056
Signed-off-by: Shubham Chakrawar <schakrawar@crusoe.ai>
In case of CVM guest rsdp is set to none. Unwrapping it
make the vmm crashed. Don't call configure system if the
rsdb address is none.
Signed-off-by: Muminul Islam <muislam@microsoft.com>
Many of the workspace members in the Cloud-hypervisor workspace share
common dependencies. Making these workspace dependencies reduces
duplication and improves maintainability.
Signed-off-by: Oliver Anderson <oliver.anderson@cyberus-technology.de>
On-behalf-of: SAP oliver.anderson@sap.com
The current documentation only mentions Windows
server support. Since only minimal adjustments
are needed for Windows 11 support, these were
added where applicable.
Also contains whitespace fixes, adds missing `\`
in example code and adds more cross references.
Signed-off-by: Lucas Grosche <lucas.grosche@cyberus-technology.de>
The other workspace members in the Cloud-hypervisor workspace
currently declare log version 0.4.22, but the tpm crate
has an older version. This inconsistency is addressed by this PR
which opens the door for declaring log as a workspace dependency.
Signed-off-by: Oliver Anderson <oliver.anderson@cyberus-technology.de>
On-behalf-of: SAP oliver.anderson@sap.com
Running one or two tests in a tight loop can cause the download
functions to quickly hit GitHub's API rate limit. That causes the test
script to fail for no apparent reason.
Signed-off-by: Wei Liu <liuwe@microsoft.com>
