Hello all,

My machine is a dual xeon x5520 server with NUMA support.

I have some question about xen dom0 kernel.
Since xen hypervisor has provided vcpu schedule,
do we need to compile the following feature in dom0 kernel?

• Tickless System (Dynamic Ticks)
• High Resolution Timer Support
• AMD IOMMU support
• SMT (Hyperthreading) scheduler support
• Multi-core scheduler suppor
• Numa Memory Allocation and Scheduler Support
• ACPI (Advanced Configuration and Power Interface) Support
  

Because domU doesn't have ACPI support, the others are not functional in domU.
But do we still need the following two item in domU kernel?

• SMT (Hyperthreading) scheduler support
• Multi-core scheduler suppor

Thanks.

Best regards,
Chao-Rui

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