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Date: Wed, 31 May 2017 17:48:54 +0200
From: Borislav Petkov <bp@alien8.de>
To: xlpang@redhat.com, Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-arch@vger.kernel.org, linux-efi@vger.kernel.org,
        kvm@vger.kernel.org, linux-doc@vger.kernel.org, x86@kernel.org,
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        Paolo Bonzini <pbonzini@redhat.com>,
        Alexander Potapenko <glider@google.com>,
        Dave Young <dyoung@redhat.com>, Larry Woodman <lwoodman@redhat.com>,
        Dmitry Vyukov <dvyukov@google.com>
Subject: Re: [PATCH v5 28/32] x86/mm, kexec: Allow kexec to be used with SME
Message-ID: <20170531154854.4tf4rmivgmixc275@pd.tnic>
References: <20170418211612.10190.82788.stgit@tlendack-t1.amdoffice.net>
 <20170418212121.10190.94885.stgit@tlendack-t1.amdoffice.net>
 <5927AC6E.8080209@redhat.com>
 <de4d2efc-6636-4120-98d9-7fdf4707f68d@amd.com>
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On Wed, May 31, 2017 at 11:03:52PM +0800, Xunlei Pang wrote:
> For kdump case, it will be put in some reserved crash memory allocated
> by kexec-tools, and passed the corresponding start address of the
> allocated reserved crash memory to kdump kernel via "elfcorehdr=",
> please see kernel functions setup_elfcorehdr() and vmcore_init() for
> how it is parsed by kdump kernel.

... which could be a great way to pass the SME status to the second
kernel without any funky sysfs games.

-- 
Regards/Gruss,
    Boris.

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