linux-kernel - Re: [PATCH v19 018/130] KVM: x86/mmu: Assume guest MMIOs are shared

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Date: Wed, 27 Mar 2024 17:27:52 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "Yamahata, Isaku" <isaku.yamahata@...el.com>
CC: "Gao, Chao" <chao.gao@...el.com>, "Zhang, Tina" <tina.zhang@...el.com>,
	"seanjc@...gle.com" <seanjc@...gle.com>, "Huang, Kai" <kai.huang@...el.com>,
	"Chen, Bo2" <chen.bo@...el.com>, "sagis@...gle.com" <sagis@...gle.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Yuan, Hang"
	<hang.yuan@...el.com>, "Aktas, Erdem" <erdemaktas@...gle.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>, "pbonzini@...hat.com"
	<pbonzini@...hat.com>, "isaku.yamahata@...ux.intel.com"
	<isaku.yamahata@...ux.intel.com>, "isaku.yamahata@...il.com"
	<isaku.yamahata@...il.com>
Subject: Re: [PATCH v19 018/130] KVM: x86/mmu: Assume guest MMIOs are shared

On Wed, 2024-03-27 at 10:22 -0700, Isaku Yamahata wrote:
> On Mon, Mar 25, 2024 at 11:41:56PM +0000,
> "Edgecombe, Rick P" <rick.p.edgecombe@...el.com> wrote:
> 
> > On Mon, 2024-02-26 at 00:25 -0800, isaku.yamahata@...el.com wrote:
> > > From: Chao Gao <chao.gao@...el.com>
> > > 
> > > TODO: Drop this patch once the common patch is merged.
> > 
> > What is this TODO talking about?
> 
> https://lore.kernel.org/all/ZcUO5sFEAIH68JIA@google.com/
> 
> This patch was shot down and need to fix it in guest side. TDVF.

It needs a firmware fix? Is there any firmware that works (boot any TD) with this patch missing?