linux-kernel - Re: [PATCH 1/2] x86/mce: Fix missing address mask in recovery for errors in TDX/SEAM non-root mode

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Message-ID: <32c01f03f4971a76f1b7ef3634ee4e6c0ee5d899.camel@intel.com>
Date: Wed, 18 Jun 2025 23:20:30 +0000
From: "Huang, Kai" <kai.huang@...el.com>
To: "Luck, Tony" <tony.luck@...el.com>, "pbonzini@...hat.com"
	<pbonzini@...hat.com>, "Hunter, Adrian" <adrian.hunter@...el.com>,
	"seanjc@...gle.com" <seanjc@...gle.com>
CC: "kvm@...r.kernel.org" <kvm@...r.kernel.org>, "Li, Xiaoyao"
	<xiaoyao.li@...el.com>, "Zhao, Yan Y" <yan.y.zhao@...el.com>,
	"dave.hansen@...ux.intel.com" <dave.hansen@...ux.intel.com>,
	"tony.lindgren@...ux.intel.com" <tony.lindgren@...ux.intel.com>,
	"mingo@...hat.com" <mingo@...hat.com>, "Chatre, Reinette"
	<reinette.chatre@...el.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>, "binbin.wu@...ux.intel.com"
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	"kirill.shutemov@...ux.intel.com" <kirill.shutemov@...ux.intel.com>,
	"Yamahata, Isaku" <isaku.yamahata@...el.com>, "linux-edac@...r.kernel.org"
	<linux-edac@...r.kernel.org>, "hpa@...or.com" <hpa@...or.com>, "Annapurve,
 Vishal" <vannapurve@...gle.com>, "Edgecombe, Rick P"
	<rick.p.edgecombe@...el.com>, "bp@...en8.de" <bp@...en8.de>, "Gao, Chao"
	<chao.gao@...el.com>, "x86@...nel.org" <x86@...nel.org>
Subject: Re: [PATCH 1/2] x86/mce: Fix missing address mask in recovery for
 errors in TDX/SEAM non-root mode

On Wed, 2025-06-18 at 15:08 +0300, Hunter, Adrian wrote:
> Commit 8a01ec97dc066 ("x86/mce: Mask out non-address bits from machine
> check bank") introduced a new #define MCI_ADDR_PHYSADDR for the mask of
> valid physical address bits within the machine check bank address register.
> 
> This is particularly needed in the case of errors in TDX/SEAM non-root mode
> because the reported address contains the TDX KeyID.  
> 

Just wondering, do you know whether this is documented anywhere?  If it is,
I think it should be helpful if you can refer that in the changelog.