linux-kernel - Re: [PATCH v2 09/15] KVM: x86/tdp_mmu: Support mirror root for TDP MMU

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Date: Thu, 30 May 2024 21:57:47 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "pbonzini@...hat.com"
	<pbonzini@...hat.com>, "seanjc@...gle.com" <seanjc@...gle.com>
CC: "Huang, Kai" <kai.huang@...el.com>, "sagis@...gle.com" <sagis@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Zhao, Yan Y"
	<yan.y.zhao@...el.com>, "Aktas, Erdem" <erdemaktas@...gle.com>,
	"dmatlack@...gle.com" <dmatlack@...gle.com>, "Yamahata, Isaku"
	<isaku.yamahata@...el.com>, "isaku.yamahata@...il.com"
	<isaku.yamahata@...il.com>
Subject: Re: [PATCH v2 09/15] KVM: x86/tdp_mmu: Support mirror root for TDP
 MMU

On Thu, 2024-05-30 at 14:07 -0700, Rick Edgecombe wrote:
> 
> Update handle_changed_spte() to take a role. Use this for a KVM_BUG_ON().

I'm wondering if the KVM_BUG_ON() is not worth the cost to the diffstat.