linux-kernel - Re: [PATCH v2] Carry forward IMA measurement log on kexec on x86

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Message-ID: <YnluLIEN9HH+QvrD@zn.tnic>
Date:   Mon, 9 May 2022 21:40:28 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Jonathan McDowell <noodles@...com>
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        James Morris <jmorris@...ei.org>,
        Ingo Molnar <mingo@...hat.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Dmitry Kasatkin <dmitry.kasatkin@...il.com>,
        "x86@...nel.org" <x86@...nel.org>,
        Mimi Zohar <zohar@...ux.ibm.com>,
        "Serge E. Hallyn" <serge@...lyn.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-integrity@...r.kernel.org" <linux-integrity@...r.kernel.org>,
        "linux-security-module@...r.kernel.org" 
        <linux-security-module@...r.kernel.org>
Subject: Re: [PATCH v2] Carry forward IMA measurement log on kexec on x86_64

On Mon, May 09, 2022 at 06:41:17PM +0000, Jonathan McDowell wrote:
> I'm not tied to setup_data but given the concerns I raise above with
> device tree on x86 and the need to handle this in the kernel it seemed
> like a reasonable first approach. You seem to be saying it's not and
> either adding the device tree infrastructure or doing a command line
> hack would be preferable?

All I'm doing is asking more questions to make you give more details as
to why you wanna do it this way. I'll take a detailed look tomorrow but
it looks ok from a quick glance.

Thx.

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette