Re: [PATCH v5] KVM: TDX: Add sub-ioctl KVM_TDX_TERMINATE_VM

[Sean Christopherson]

On Fri, 18 Jul 2025 11:15:41 -0700, Sean Christopherson wrote:
> Add sub-ioctl KVM_TDX_TERMINATE_VM to release the HKID prior to shutdown,
> which enables more efficient reclaim of private memory.
> 
> Private memory is removed from MMU/TDP when guest_memfds are closed.  If
> the HKID has not been released, the TDX VM is still in the RUNNABLE state,
> and so pages must be removed using "Dynamic Page Removal" procedure (refer
> to the TDX Module Base spec) which involves a number of steps:
> 	Block further address translation
> 	Exit each VCPU
> 	Clear Secure EPT entry
> 	Flush/write-back/invalidate relevant caches
> 
> [...]

Applied to kvm-x86 vmx (again).

[1/1] KVM: TDX: Add sub-ioctl KVM_TDX_TERMINATE_VM
      https://github.com/kvm-x86/linux/commit/dcab95e53364

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