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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20200730122645.GA3257@8bytes.org>
Date:   Thu, 30 Jul 2020 14:26:45 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Mike Stunes <mstunes@...are.com>
Cc:     "x86@...nel.org" <x86@...nel.org>, Joerg Roedel <jroedel@...e.de>,
        "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, Jul 30, 2020 at 01:27:48AM +0000, Mike Stunes wrote:
> Thanks for the updated patches! I applied this patch-set onto commit
> 01634f2bd42e ("Merge branch 'x86/urgent’”) from your tree. It boots,
> but CPU 1 (on a two-CPU VM) is offline at boot, and `chcpu -e 1` returns:
> 
> chcpu: CPU 1 enable failed: Input/output error
> 
> with nothing in dmesg to indicate why it failed. The first thing I thought
> of was anything relating to the AP jump table, but I haven’t changed
> anything there on the hypervisor side. Let me know what other data I can
> provide for you.

Hard to tell, have you enabled FSGSBASE in the guest? If yes, can you
try to disable it?

Regards,

	Joerg