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Date:   Mon, 20 Jun 2022 11:00:55 +0300
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Subject: Re: "Bad pagetable: 000c" crashes and errata "Not-Present Page Faults
 May Set the RSVD Flag in the Error Code"
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To:     Dave Hansen <dave.hansen@intel.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Andy Lutomirski <luto@kernel.org>,
        Peter Zijlstra <peterz@infradead.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>
Cc:     kernel@openvz.org, Konstantin Khorenko <khorenko@virtuozzo.com>,
        steve.sipes@comandsolutions.com, x86@kernel.org,
        "H. Peter Anvin" <hpa@zytor.com>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
References: <aae9c7c6-989c-0261-470a-252537493b53@openvz.org>
 <04db74ce-4e43-1edb-34e6-ca162f483680@intel.com>
From:   Vasily Averin <vvs@openvz.org>
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On 6/20/22 10:18, Dave Hansen wrote:
> On 6/19/22 22:29, Vasily Averin wrote:
>> Some (old?) Intel CPU's have errata:
>> "Not-Present Page Faults May Set the RSVD Flag in the Error Code
> 
> Do you happen to have a link to the actual erratum document?  It's
> usually a "Specification Update" for some model or another.

For Intel Xeon E5400 used on affected node:
https://www.intel.com/content/dam/www/public/us/en/documents/specification-updates/xeon-5400-spec-update.pdf
Intel® Xeon® Processor 5400 Series
Specification Update
August 2013
Document Number: 318585-021

page 39
AX74. Not-Present Page Faults May Set the RSVD Flag in the Error Cod

Later I've found similar articles for another processors too.

Thank you,
	Vasily Averin