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hypervisor: Set destination vCPU TSC frequency to source

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Include the TSC frequency as part of the KVM state so that it will be
restored at the destination.

This ensures migration works correctly between hosts that have a
different TSC frequency if the guest is running with TSC as the source
of timekeeping.

Fixes: #5786

Signed-off-by: Rob Bradford <rbradford@rivosinc.com>
This commit is contained in:
Rob Bradford
2023-09-19 10:30:45 +01:00
committed by Bo Chen
parent 18d8c5669f
commit 44f200d67d
4 changed files with 39 additions and 0 deletions
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2
vmm/src/seccomp_filters.rs
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@@ -366,6 +366,7 @@ fn create_vmm_ioctl_seccomp_rule_kvm() -> Result<Vec<SeccompRule>, BackendError>
const KVM_SET_LAPIC: u64 = 0x4400_ae8f;
const KVM_SET_MSRS: u64 = 0x4008_ae89;
const KVM_SET_SREGS: u64 = 0x4138_ae84;
const KVM_SET_TSC_KHZ: u64 = 0xaea2;
const KVM_SET_TSS_ADDR: u64 = 0xae47;
const KVM_SET_XCRS: u64 = 0x4188_aea7;
const KVM_SET_XSAVE: u64 = 0x5000_aea5;
@@ -392,6 +393,7 @@ fn create_vmm_ioctl_seccomp_rule_kvm() -> Result<Vec<SeccompRule>, BackendError>
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_IDENTITY_MAP_ADDR)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_LAPIC)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_SREGS)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_TSC_KHZ)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_TSS_ADDR,)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_MSRS)?],
and![Cond::new(1, ArgLen::Dword, Eq, KVM_SET_XCRS,)?],