linux-kernel - Re: [PATCH v13 2/6] powerpc: Move arch independent ima kexec functions to drivers/of/kexec.c

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Date:   Tue, 22 Dec 2020 21:48:02 -0300
From:   Thiago Jung Bauermann <bauerman@...ux.ibm.com>
To:     Lakshmi Ramasubramanian <nramas@...ux.microsoft.com>
Cc:     zohar@...ux.ibm.com, robh@...nel.org, takahiro.akashi@...aro.org,
        gregkh@...uxfoundation.org, will@...nel.org,
        catalin.marinas@....com, mpe@...erman.id.au, james.morse@....com,
        sashal@...nel.org, 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,
        masahiroy@...nel.org, bhsharma@...hat.com, mbrugger@...e.com,
        hsinyi@...omium.org, tao.li@...o.com, christophe.leroy@....fr,
        prsriva@...ux.microsoft.com, balajib@...ux.microsoft.com,
        linux-integrity@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v13 2/6] powerpc: Move arch independent ima kexec
 functions to drivers/of/kexec.c


Actually, I have one more comment on this patch:

Lakshmi Ramasubramanian <nramas@...ux.microsoft.com> writes:

> diff --git a/arch/powerpc/kexec/file_load.c b/arch/powerpc/kexec/file_load.c
> index 956bcb2d1ec2..9f3ec0b239ef 100644
> --- a/arch/powerpc/kexec/file_load.c
> +++ b/arch/powerpc/kexec/file_load.c
> @@ -20,7 +20,6 @@
>  #include <linux/of_fdt.h>
>  #include <linux/libfdt.h>
>  #include <asm/setup.h>
> -#include <asm/ima.h>
>  
>  #define SLAVE_CODE_SIZE		256	/* First 0x100 bytes */
>  
> @@ -163,12 +162,6 @@ int setup_new_fdt(const struct kimage *image, void *fdt,
>  	if (ret)
>  		goto err;
>  
> -	ret = setup_ima_buffer(image, fdt, fdt_path_offset(fdt, "/chosen"));
> -	if (ret) {
> -		pr_err("Error setting up the new device tree.\n");
> -		return ret;
> -	}
> -
>  	return 0;
>  
>  err:

With this change, setup_new_fdt() is nothing more than a call to
of_kexec_setup_new_fdt(). It should be removed, and its caller should
call of_kexec_setup_new_fdt() directly.

This change could be done in patch 4 of this series, to keep this patch
simpler.

-- 
Thiago Jung Bauermann
IBM Linux Technology Center