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Date:   Fri, 19 Apr 2019 13:36:21 +0200
From:   Borislav Petkov <bp@alien8.de>
To:     Baoquan He <bhe@redhat.com>
Cc:     Kairui Song <kasong@redhat.com>,
        Thomas Gleixner <tglx@linutronix.de>,
        linux-kernel@vger.kernel.org,
        Junichi Nomura <j-nomura@ce.jp.nec.com>,
        Dave Young <dyoung@redhat.com>,
        Chao Fan <fanc.fnst@cn.fujitsu.com>,
        "x86@kernel.org" <x86@kernel.org>,
        "kexec@lists.infradead.org" <kexec@lists.infradead.org>
Subject: Re: [RFC PATCH] kexec, x86/boot: map systab region in identity
 mapping before accessing it
Message-ID: <20190419113621.GD10324@zn.tnic>
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 <20190419105014.GE11060@MiWiFi-R3L-srv>
 <20190419112801.GB10324@zn.tnic>
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On Fri, Apr 19, 2019 at 01:28:01PM +0200, Borislav Petkov wrote:
> Read again what I said: "should all be passed through boot_params".
> Which means, boot_params should be extended with a field of a flag to
> say: "this is a kexec'ed kernel".

And by that I mean similar to the XLF_EFI_KEXEC mechanism. The first
kernel or kexec(1) should prepare the info needed by the kexec'ed
kernel.

-- 
Regards/Gruss,
    Boris.

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