linux-kernel - Re: [PATCH] KVM: x86/mmu: Allow per VM kvm_mmu_max

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Message-ID: <7318bebe448e88603f5e86bf1bb7f43dce4ce8dc.camel@intel.com>
Date: Tue, 16 Jul 2024 02:53:07 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "Yamahata, Isaku"
	<isaku.yamahata@...el.com>
CC: "pbonzini@...hat.com" <pbonzini@...hat.com>, "seanjc@...gle.com"
	<seanjc@...gle.com>, "isaku.yamahata@...il.com" <isaku.yamahata@...il.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] KVM: x86/mmu: Allow per VM kvm_mmu_max_gfn()

On Mon, 2024-07-15 at 18:21 -0700, isaku.yamahata@...el.com wrote:
> From: Isaku Yamahata <isaku.yamahata@...el.com>
> 
> Prepare for TDX support by making kvm_mmu_max_gfn() configurable.  Have
> this preparation also be useful by non-TDX changes to improve correctness
> associated with the combination of 4-level EPT and MAXPA > 48.  The issue
> is analyzed at [1].

It looks like the part where you were going to describe the TDX and other
testing got left off, can elaborate?