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Tue, 4 Aug 2026 10:58:12 +0000 (GMT) Received: from ibm.com (unknown [9.224.87.205]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 4 Aug 2026 10:58:11 +0000 (GMT) From: Finn Callies To: hca@linux.ibm.com, gor@linux.ibm.com, agordeev@linux.ibm.com Cc: linux-s390@vger.kernel.org, fcallies@linux.ibm.com, freude@linux.ibm.com Subject: [PATCH v1 1/1] s390/ap: Fix MAPML computation Date: Tue, 4 Aug 2026 12:58:11 +0200 Message-ID: <20260804105811.17744-2-fcallies@linux.ibm.com> X-Mailer: git-send-email 2.52.0 In-Reply-To: <20260804105811.17744-1-fcallies@linux.ibm.com> References: <20260804105811.17744-1-fcallies@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Zp05cclXG3j_Z3nJA9Y9hoP5od5GGQKQ X-Proofpoint-Spam-Info: AW1haW4tMjYwODA0MDA4NSBTYWx0ZWRfXy/OMbOw/6BP3 e46gXQARKPOoI9xpe+lh5v92Z6ek1AwsU3pYB7yKlikimAokReb8JIWEPY7chqZFfcTRfaM+Oxf oZfTxJx7uR5Aoj5cAbBR8SX34tqbCf0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwODA0MDA4NSBTYWx0ZWRfX9U5tu1O0UdcN 4OPdu7pwu8PfWBJ60ROpKw/epcyKuXnYR7fWMyXV2jgxWK0foaNsqcuyCA6DTAlxoP7VjcMACjV nlvwY+pOGYsaeWN8l0P89DqHDzr3f/bmDq7vY/7AmEeIe96w8yEgatQGcgPYwjx6MW2EYYANmMl 8ofpi0PJvIU5TbjDkrg34XJ+oSOzviMKRUob4KNC0xWIPSJNy4LSpDXALYWDpLEhJJbCB24lDtC Kkp9RSVXx86wpn07/7BZmjPfpSNBxgc85X4x5ca0TquL5BV1WVVtCiXFnFndH/QWq2UmXvFEhjF bF23koSm70A3Peeu7JD+jxV/6SyssdOFF8lUkpNWqiwrE0s1MFiDFAN8XQxg8jIleD6zBMK9GAe P6oW1Qpu+5P/QLGWUqmvOU1H6Ed16TgEnCf+v4BnGZaU3LaKqr6rEDfHXdcKTv/Y2U/SzgxHkZz hAM7A7ciSXoJivSevdA== X-Proofpoint-GUID: Zp05cclXG3j_Z3nJA9Y9hoP5od5GGQKQ X-Authority-Analysis: v=2.4 cv=KfzidwYD c=1 sm=1 tr=0 ts=6a71c5c9 cx=c_pps a=aDMHemPKRhS1OARIsFnwRA==:117 a=aDMHemPKRhS1OARIsFnwRA==:17 a=Sv0fKeRqtYgA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=I0pAIdpgsTTtS-INlSUA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-08-04_02,2026-08-03_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 bulkscore=0 impostorscore=0 suspectscore=0 malwarescore=0 adultscore=0 clxscore=1015 priorityscore=1501 phishscore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2608040085 When the TAPQ subfunction of PQAP returns a value between 0 and 3 in the ml field the Principles of Operation states that the MAPML size is to be 12k bytes. Reviewed-by: Harald Freudenberger Signed-off-by: Finn Callies --- drivers/s390/crypto/ap_card.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/s390/crypto/ap_card.c b/drivers/s390/crypto/ap_card.c index e827fbeb76fb..c86397f4ddcd 100644 --- a/drivers/s390/crypto/ap_card.c +++ b/drivers/s390/crypto/ap_card.c @@ -241,7 +241,7 @@ struct ap_card *ap_card_create(int id, struct ap_tapq_hwinfo hwinfo, ac->ap_dev.device_type = comp_type; ac->hwinfo = hwinfo; ac->id = id; - ac->maxmsgsize = hwinfo.ml > 0 ? + ac->maxmsgsize = hwinfo.ml > 3 ? hwinfo.ml * AP_TAPQ_ML_FIELD_CHUNK_SIZE : AP_DEFAULT_MAX_MSG_SIZE; return ac; -- Finn Callies Linux on Z - crypto