linux-kernel - Re: [PATCH 00/16] KVM: TDX: TDX interrupts

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Message-ID: <Z3w4Ku4Jq0CrtXne@google.com>
Date: Mon, 6 Jan 2025 12:08:10 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: Xiaoyao Li <xiaoyao.li@...el.com>
Cc: Binbin Wu <binbin.wu@...ux.intel.com>, pbonzini@...hat.com, kvm@...r.kernel.org, 
	rick.p.edgecombe@...el.com, kai.huang@...el.com, adrian.hunter@...el.com, 
	reinette.chatre@...el.com, tony.lindgren@...ux.intel.com, 
	isaku.yamahata@...el.com, yan.y.zhao@...el.com, chao.gao@...el.com, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 00/16] KVM: TDX: TDX interrupts

On Mon, Jan 06, 2025, Xiaoyao Li wrote:
> On 12/9/2024 9:07 AM, Binbin Wu wrote:
> > Hi,
> > 
> > This patch series introduces the support of interrupt handling for TDX
> > guests, including virtual interrupt injection and VM-Exits caused by
> > vectored events.
> > 
> 
> (I'm not sure if it is the correct place to raise the discussion on
> KVM_SET_LAPIC and KVM_SET_LAPIC for TDX. But it seems the most related
> series)
> 
> Should KVM reject KVM_GET_LAPIC and KVM_SET_LAPIC for TDX?

Yes, IIRC that was what Paolo suggested in one of the many PUCK calls.  Until
KVM supports intra-host migration for TDX guests, getting and setting APIC state
is nonsensical.