mirror of
https://github.com/cloud-hypervisor/cloud-hypervisor.git
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97 lines
2.9 KiB
Rust
97 lines
2.9 KiB
Rust
// Copyright © 2019 Intel Corporation
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//
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// SPDX-License-Identifier: Apache-2.0 OR BSD-3-Clause
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//
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// Copyright © 2020, Microsoft Corporation
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//
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// Copyright 2018-2019 CrowdStrike, Inc.
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//
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//
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use vm_memory::GuestAddress;
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use crate::arch::x86::{msr_index, MTRR_ENABLE, MTRR_MEM_TYPE_WB};
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use crate::kvm::{Cap, Kvm, KvmError, KvmResult};
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use serde_derive::{Deserialize, Serialize};
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///
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/// Export generically-named wrappers of kvm-bindings for Unix-based platforms
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///
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pub use {
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kvm_bindings::kvm_dtable as DescriptorTable, kvm_bindings::kvm_fpu as FpuState,
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kvm_bindings::kvm_lapic_state as LapicState, kvm_bindings::kvm_mp_state as MpState,
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kvm_bindings::kvm_msr_entry as MsrEntry, kvm_bindings::kvm_regs as StandardRegisters,
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kvm_bindings::kvm_segment as SegmentRegister, kvm_bindings::kvm_sregs as SpecialRegisters,
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kvm_bindings::kvm_vcpu_events as VcpuEvents,
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kvm_bindings::kvm_xcrs as ExtendedControlRegisters, kvm_bindings::kvm_xsave as Xsave,
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kvm_bindings::CpuId, kvm_bindings::Msrs as MsrEntries,
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};
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pub const KVM_TSS_ADDRESS: GuestAddress = GuestAddress(0xfffb_d000);
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macro_rules! msr {
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($msr:expr) => {
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MsrEntry {
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index: $msr,
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data: 0x0,
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..Default::default()
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}
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};
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}
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macro_rules! msr_data {
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($msr:expr, $data:expr) => {
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MsrEntry {
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index: $msr,
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data: $data,
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..Default::default()
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}
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};
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}
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pub fn boot_msr_entries() -> MsrEntries {
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MsrEntries::from_entries(&[
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msr!(msr_index::MSR_IA32_SYSENTER_CS),
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msr!(msr_index::MSR_IA32_SYSENTER_ESP),
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msr!(msr_index::MSR_IA32_SYSENTER_EIP),
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msr!(msr_index::MSR_STAR),
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msr!(msr_index::MSR_CSTAR),
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msr!(msr_index::MSR_LSTAR),
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msr!(msr_index::MSR_KERNEL_GS_BASE),
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msr!(msr_index::MSR_SYSCALL_MASK),
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msr!(msr_index::MSR_IA32_TSC),
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msr_data!(
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msr_index::MSR_IA32_MISC_ENABLE,
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msr_index::MSR_IA32_MISC_ENABLE_FAST_STRING as u64
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),
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msr_data!(msr_index::MSR_MTRRdefType, MTRR_ENABLE | MTRR_MEM_TYPE_WB),
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])
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}
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///
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/// Check KVM extension for Linux
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///
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pub fn check_required_kvm_extensions(kvm: &Kvm) -> KvmResult<()> {
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if !kvm.check_extension(Cap::SignalMsi) {
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return Err(KvmError::CapabilityMissing(Cap::SignalMsi));
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}
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if !kvm.check_extension(Cap::TscDeadlineTimer) {
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return Err(KvmError::CapabilityMissing(Cap::TscDeadlineTimer));
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}
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if !kvm.check_extension(Cap::SplitIrqchip) {
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return Err(KvmError::CapabilityMissing(Cap::SplitIrqchip));
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}
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Ok(())
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}
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#[derive(Clone, Serialize, Deserialize)]
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pub struct VcpuKvmState {
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pub msrs: MsrEntries,
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pub vcpu_events: VcpuEvents,
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pub regs: StandardRegisters,
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pub sregs: SpecialRegisters,
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pub fpu: FpuState,
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pub lapic_state: LapicState,
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pub xsave: Xsave,
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pub xcrs: ExtendedControlRegisters,
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pub mp_state: MpState,
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}
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