linux-kernel - Re: [PATCH 5/5] x86/virt/tdx: Export global metadata read infrastructure

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Message-ID: <3e77e370-5b30-4417-93e3-7e2cb7ed22fb@intel.com>
Date: Tue, 7 May 2024 10:13:45 +1200
From: "Huang, Kai" <kai.huang@...el.com>
To: Dave Hansen <dave.hansen@...el.com>, <linux-kernel@...r.kernel.org>,
	<kvm@...r.kernel.org>
CC: <x86@...nel.org>, <kirill.shutemov@...ux.intel.com>,
	<peterz@...radead.org>, <tglx@...utronix.de>, <bp@...en8.de>,
	<mingo@...hat.com>, <hpa@...or.com>, <seanjc@...gle.com>,
	<pbonzini@...hat.com>, <isaku.yamahata@...el.com>, <jgross@...e.com>
Subject: Re: [PATCH 5/5] x86/virt/tdx: Export global metadata read
 infrastructure



On 7/05/2024 3:43 am, Dave Hansen wrote:
> On 3/1/24 03:20, Kai Huang wrote:
>> KVM will need to read a bunch of non-TDMR related metadata to create and
>> run TDX guests.  Export the metadata read infrastructure for KVM to use.
> 
> All of this hinges on how KVM ends up using this infrastructure.
> 
> I want to see the whole picture before _any_ of this gets applied.
> These 5 patches only vaguely hint at that bigger picture.
> 
> I know folks want to draw some kind of line and say "x86" over here and
> "kvm" over there.  But that inclination really doesn't help anyone get
> that big picture view.

Understood.  I'll work with Rick on this and get back to you guys.

Thanks for the feedback!