linux-kernel - Re: [PATCH v9 0/8] Carry forward IMA measurement log on kexec on ARM64

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Message-ID: <a73a47da53b795617758cc23991624dfca173eba.camel@linux.ibm.com>
Date:   Tue, 01 Dec 2020 06:34:18 -0500
From:   Mimi Zohar <zohar@...ux.ibm.com>
To:     Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>,
        Rob Herring <robh@...nel.org>
Cc:     bauerman@...ux.ibm.com, gregkh@...uxfoundation.org,
        james.morse@....com, catalin.marinas@....com, sashal@...nel.org,
        will@...nel.org, mpe@...erman.id.au, benh@...nel.crashing.org,
        paulus@...ba.org, frowand.list@...il.com,
        vincenzo.frascino@....com, mark.rutland@....com,
        dmitry.kasatkin@...il.com, jmorris@...ei.org, serge@...lyn.com,
        pasha.tatashin@...een.com, allison@...utok.net,
        kstewart@...uxfoundation.org, takahiro.akashi@...aro.org,
        tglx@...utronix.de, masahiroy@...nel.org, bhsharma@...hat.com,
        mbrugger@...e.com, hsinyi@...omium.org, tao.li@...o.com,
        christophe.leroy@....fr, linux-integrity@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        prsriva@...ux.microsoft.com, balajib@...ux.microsoft.com
Subject: Re: [PATCH v9 0/8] Carry forward IMA measurement log on kexec on
 ARM64

On Sat, 2020-11-21 at 06:38 -0800, Lakshmi Ramasubramanian wrote:
> On 11/21/20 5:57 AM, Rob Herring wrote:
> > On Fri, Nov 13, 2020 at 11:22:35AM -0800, Lakshmi Ramasubramanian wrote:

> >>   arch/powerpc/include/asm/kexec.h       |   1 -
> >>   arch/powerpc/kexec/Makefile            |   7 +-
> >>   arch/powerpc/kexec/file_load.c         |  32 --------
> >>   arch/powerpc/kexec/ima.c               | 106 ++-----------------------
> >>   drivers/of/Makefile                    |   9 +++
> > 
> >>   drivers/of/ima_kexec.c                 |  91 +++++++++++++++++++++
> >>   drivers/of/kexec_fdt.c                 |  55 +++++++++++++
> > 
> > Does this need to be 2 files? Just kexec.c?
> 
> Since the functions defined in "ima_kexec.c" and "kexec_fdt.c" are 
> enabled on 2 different kernel CONFIGs, keeping them in 2 files enables 
> us to avoid using "#ifdef" in C files.

Normally that is true, but just as all of the kexec related functions
are co-located in ima/ima_kexec.c, co-locating all of the kexec related
functions in drivers/of makes sense.  

thanks,

Mimi