linux-kernel - Re: [PATCH 4/5] x86/virt/tdx: Support global metadata read for all element sizes

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Message-ID: <ba2b0efa804c26034118c61f1eb6f335fc4cf02d.camel@intel.com>
Date: Fri, 3 May 2024 18:32:47 +0000
From: "Edgecombe, Rick P" <rick.p.edgecombe@...el.com>
To: "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "Huang, Kai"
	<kai.huang@...el.com>
CC: "Hansen, Dave" <dave.hansen@...el.com>, "seanjc@...gle.com"
	<seanjc@...gle.com>, "bp@...en8.de" <bp@...en8.de>, "x86@...nel.org"
	<x86@...nel.org>, "peterz@...radead.org" <peterz@...radead.org>,
	"hpa@...or.com" <hpa@...or.com>, "mingo@...hat.com" <mingo@...hat.com>,
	"kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
	"tglx@...utronix.de" <tglx@...utronix.de>, "pbonzini@...hat.com"
	<pbonzini@...hat.com>, "jgross@...e.com" <jgross@...e.com>, "Yamahata, Isaku"
	<isaku.yamahata@...el.com>
Subject: Re: [PATCH 4/5] x86/virt/tdx: Support global metadata read for all
 element sizes

On Fri, 2024-05-03 at 12:26 +0000, Huang, Kai wrote:
> 
> To resolve this once for all, extend the existing metadata reading code
> to provide a generic metadata read infrastructure which supports reading
> all 8/16/32/64 bits element sizes.

I think the key point is that it is actually simpler to support all field types
then only 16 and 64.