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AArch64: Implement AArch64 vCPU states save/restore

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This commit adds methods to save/restore AArch64 vCPU registers,
including:

1. The AArch64 `VcpuKvmState` structure.

2. Some `Vcpu` trait methods of the `KvmVcpu` structure to
enable the save/restore of the AArch64 vCPU states.

Signed-off-by: Henry Wang <Henry.Wang@arm.com>
This commit is contained in:
Henry Wang
2020-08-30 16:44:39 +08:00
committed by Rob Bradford
parent e3d45be6f7
commit ffafeda4b6
4 changed files with 335 additions and 13 deletions
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28
hypervisor/src/kvm/aarch64/mod.rs
View File

@@ -12,14 +12,16 @@
/// Export generically-named wrappers of kvm-bindings for Unix-based platforms
///
use crate::kvm::{KvmError, KvmResult};
pub use kvm_bindings::kvm_vcpu_init as VcpuInit;
use kvm_bindings::{
KVM_REG_ARM64, KVM_REG_ARM64_SYSREG, KVM_REG_ARM64_SYSREG_CRM_MASK,
KVM_REG_ARM64_SYSREG_CRM_SHIFT, KVM_REG_ARM64_SYSREG_CRN_MASK, KVM_REG_ARM64_SYSREG_CRN_SHIFT,
KVM_REG_ARM64_SYSREG_OP0_MASK, KVM_REG_ARM64_SYSREG_OP0_SHIFT, KVM_REG_ARM64_SYSREG_OP1_MASK,
KVM_REG_ARM64_SYSREG_OP1_SHIFT, KVM_REG_ARM64_SYSREG_OP2_MASK, KVM_REG_ARM64_SYSREG_OP2_SHIFT,
KVM_REG_ARM_COPROC_MASK, KVM_REG_ARM_CORE, KVM_REG_SIZE_MASK, KVM_REG_SIZE_U32,
KVM_REG_SIZE_U64,
kvm_mp_state, kvm_one_reg, kvm_regs, KVM_REG_ARM64, KVM_REG_ARM64_SYSREG,
KVM_REG_ARM64_SYSREG_CRM_MASK, KVM_REG_ARM64_SYSREG_CRM_SHIFT, KVM_REG_ARM64_SYSREG_CRN_MASK,
KVM_REG_ARM64_SYSREG_CRN_SHIFT, KVM_REG_ARM64_SYSREG_OP0_MASK, KVM_REG_ARM64_SYSREG_OP0_SHIFT,
KVM_REG_ARM64_SYSREG_OP1_MASK, KVM_REG_ARM64_SYSREG_OP1_SHIFT, KVM_REG_ARM64_SYSREG_OP2_MASK,
KVM_REG_ARM64_SYSREG_OP2_SHIFT, KVM_REG_ARM_COPROC_MASK, KVM_REG_ARM_CORE, KVM_REG_SIZE_MASK,
KVM_REG_SIZE_U32, KVM_REG_SIZE_U64,
};
pub use kvm_bindings::{
kvm_one_reg as OneRegister, kvm_regs as StandardRegisters, kvm_vcpu_init as VcpuInit, RegList,
};
use serde_derive::{Deserialize, Serialize};
pub use {kvm_ioctls::Cap, kvm_ioctls::Kvm};
@@ -128,5 +130,13 @@ pub fn check_required_kvm_extensions(kvm: &Kvm) -> KvmResult<()> {
Ok(())
}
#[derive(Clone, Serialize, Deserialize)]
pub struct VcpuKvmState {}
#[derive(Clone, Default, Serialize, Deserialize)]
pub struct VcpuKvmState {
pub mp_state: kvm_mp_state,
pub core_regs: kvm_regs,
pub sys_regs: Vec<kvm_one_reg>,
// We will be using the mpidr for passing it to the VmState.
// The VmState will give this away for saving restoring the icc and redistributor
// registers.
pub mpidr: u64,
}