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

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Date: Thu, 4 Apr 2024 15:31:02 -0700
From: Isaku Yamahata <isaku.yamahata@...el.com>
To: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
Cc: "Yamahata, Isaku" <isaku.yamahata@...el.com>,
	"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, Mar 27, 2024 at 05:27:52PM +0000,
"Edgecombe, Rick P" <rick.p.edgecombe@...el.com> wrote:

> 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?

Yes.  Config-B (OvmfPkg/IntelTdx/IntelTdxX64.dsc) works for me without this patch.
I'm looking into config-A(OvmfPkg/OvmfPkgX64.dsc) now.
-- 
Isaku Yamahata <isaku.yamahata@...el.com>