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b4ba157044
Add ParaVirt steal time feature in host side, VM can search supported features provided by KVM hypervisor, a feature KVM_FEATURE_STEAL_TIME is added here. Like x86, steal time structure is saved in guest memory, one hypercall function KVM_HCALL_FUNC_NOTIFY is added to notify KVM to enable this feature. One CPU attr ioctl command KVM_LOONGARCH_VCPU_PVTIME_CTRL is added to save and restore the base address of steal time structure when a VM is migrated. Signed-off-by: Bibo Mao <maobibo@loongson.cn> Signed-off-by: Huacai Chen <chenhuacai@loongson.cn> |
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