mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
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1befae872d
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>
64 lines
2.2 KiB
Rust
64 lines
2.2 KiB
Rust
// Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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// SPDX-License-Identifier: Apache-2.0
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pub mod layout;
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use crate::RegionType;
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use kvm_ioctls::*;
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use vm_memory::{GuestAddress, GuestMemoryMmap, GuestUsize};
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/// Stub function that needs to be implemented when aarch64 functionality is added.
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pub fn arch_memory_regions(size: GuestUsize) -> Vec<(GuestAddress, usize, RegionType)> {
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vec![(GuestAddress(0), size as usize, RegionType::Ram)]
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}
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#[derive(Debug, Copy, Clone)]
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/// Specifies the entry point address where the guest must start
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/// executing code.
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pub struct EntryPoint {
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/// Address in guest memory where the guest must start execution
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pub entry_addr: GuestAddress,
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}
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/// Stub function that needs to be implemented when aarch64 functionality is added.
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pub fn configure_system(
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_guest_mem: &GuestMemoryMmap,
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_cmdline_addr: GuestAddress,
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_cmdline_size: usize,
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_num_cpus: u8,
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_rsdp_addr: Option<GuestAddress>,
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) -> super::Result<()> {
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Ok(())
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}
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/// Stub function that needs to be implemented when aarch64 functionality is added.
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pub fn get_reserved_mem_addr() -> usize {
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0
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}
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pub fn get_host_cpu_phys_bits() -> u8 {
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// The value returned here is used to determine the physical address space size
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// for a VM (IPA size).
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// In recent kernel versions, the maxium IPA size supported by the host can be
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// known by querying cap KVM_CAP_ARM_VM_IPA_SIZE. And the IPA size for a
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// guest can be configured smaller.
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// But in Cloud-Hypervisor we simply use the maxium value for the VM.
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// Reference https://lwn.net/Articles/766767/.
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//
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// The correct way to query KVM_CAP_ARM_VM_IPA_SIZE is via rust-vmm/kvm-ioctls,
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// which wraps all IOCTL's and provides easy interface to user hypervisors.
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// For now the cap hasn't been supported. A separate patch will be submitted to
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// rust-vmm to add it.
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// So a hardcoded value is used here as a temporary solution.
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// It will be replace once rust-vmm/kvm-ioctls is ready.
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//
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40
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}
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pub fn check_required_kvm_extensions(kvm: &Kvm) -> super::Result<()> {
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if !kvm.check_extension(Cap::SignalMsi) {
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return Err(super::Error::CapabilityMissing(Cap::SignalMsi));
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}
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Ok(())
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}
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