linux-kernel - Re: [PATCH v5 00/75] x86: SEV-ES Guest Support

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Date:   Thu, 20 Aug 2020 14:10:29 +0200
From:   Joerg Roedel <jroedel@...e.de>
To:     Mike Stunes <mstunes@...are.com>
Cc:     Joerg Roedel <joro@...tes.org>, "x86@...nel.org" <x86@...nel.org>,
        "hpa@...or.com" <hpa@...or.com>, Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Jiri Slaby <jslaby@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Tom Lendacky <thomas.lendacky@....com>,
        Juergen Gross <jgross@...e.com>,
        Kees Cook <keescook@...omium.org>,
        David Rientjes <rientjes@...gle.com>,
        Cfir Cohen <cfir@...gle.com>,
        Erdem Aktas <erdemaktas@...gle.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Martin Radev <martin.b.radev@...il.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "kvm@...r.kernel.org" <kvm@...r.kernel.org>,
        "virtualization@...ts.linux-foundation.org" 
        <virtualization@...ts.linux-foundation.org>
Subject: Re: [PATCH v5 00/75] x86: SEV-ES Guest Support

Hi Mike,

On Thu, Aug 20, 2020 at 12:58:13AM +0000, Mike Stunes wrote:
> Yes, I still see the issue — APs are offline after boot. I’ll spend
> some time seeing if I can figure out what the problem is. Thanks!

Thanks. I think the first step here would be to find out where on the
APs (which RIP) the first #VC exception happens. I guess in the #VC
entry code it triggers the next exception when trying to execute the
fsgsbase instructions.

Regards,

	Joerg