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Wed, 18 May 2022 11:54:41 +0000 (GMT) Date: Wed, 18 May 2022 13:54:39 +0200 From: Heiko Carstens To: Steffen Eiden Cc: Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Nico Boehr , linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] s390: Add attestation query information Message-ID: References: <20220518095113.982955-1-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220518095113.982955-1-seiden@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-GUID: TKogau4XcC4SsuoX52VFtJzUpFkxKPIy X-Proofpoint-ORIG-GUID: TKogau4XcC4SsuoX52VFtJzUpFkxKPIy X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.874,Hydra:6.0.486,FMLib:17.11.64.514 definitions=2022-05-18_04,2022-05-17_02,2022-02-23_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 suspectscore=0 spamscore=0 impostorscore=0 mlxscore=0 bulkscore=0 clxscore=1015 phishscore=0 malwarescore=0 priorityscore=1501 mlxlogscore=538 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2202240000 definitions=main-2205180065 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,RDNS_NONE, SPF_HELO_NONE,T_SCC_BODY_TEXT_LINE autolearn=no autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 > --- > 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.