linux-kernel - [PATCH v2 0/1] s390: Add attestation query information

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Date:   Wed, 18 May 2022 13:59:07 +0000
From:   Steffen Eiden <seiden@...ux.ibm.com>
To:     Heiko Carstens <hca@...ux.ibm.com>,
        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: [PATCH v2 0/1] s390: Add attestation query information

By design the uv-device does not check whether an incoming attestation
measurement request only specifies valid plaintext flags or has the
right request version, as these values are verified by the Ultravisor
anyway. However, the userspace program that generates these requests
might want to know which flags/versions are supported in order to
create requests without trial and error. Therefore, we must expose the
supported plaintext flags and versions to userspace.

since v1:
	* rebased on Janosch's "kvm: s390: Add PV dump support" series
	* added rationale as this cover letter

Steffen Eiden (1):
  s390: Add attestation query information

 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(-)

-- 
2.30.2