linux-kernel - Re: [PATCH] s390: Add attestation query information

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Message-ID: <YoTefxTetgGrfKym@osiris>
Date:   Wed, 18 May 2022 13:54:39 +0200
From:   Heiko Carstens <hca@...ux.ibm.com>
To:     Steffen Eiden <seiden@...ux.ibm.com>
Cc:     Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Nico Boehr <nrb@...ux.ibm.com>, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] s390: Add attestation query information

On Wed, May 18, 2022 at 09:51:13AM +0000, Steffen Eiden wrote:
> We have information about the supported attestation header version
> and paf (=  plaintext attestation flag) bits.
> Let's expose it via the sysfs files.
> 
> Signed-off-by: Steffen Eiden <seiden@...ux.ibm.com>
> ---
>  arch/s390/boot/uv.c        |  2 ++
>  arch/s390/include/asm/uv.h |  7 ++++++-
>  arch/s390/kernel/uv.c      | 20 ++++++++++++++++++++
>  3 files changed, 28 insertions(+), 1 deletion(-)

Please write in the cover-letter *why* this is needed.