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Wed, 18 Feb 2026 12:12:57 +0000 (GMT) Message-ID: <9cdca2ae-241e-454d-bc25-462b0e2825ee@linux.ibm.com> Date: Wed, 18 Feb 2026 13:12:57 +0100 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 2/4] s390/sclp: Detect ASTFLEIE 2 facility To: Christoph Schlameuss , linux-s390@vger.kernel.org Cc: Christian Borntraeger , Claudio Imbrenda , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Sven Schnelle , Hendrik Brueckner , Nina Schoetterl-Glausch , kvm@vger.kernel.org References: <20260212-vsie-alter-stfle-fac-v1-0-d772be74a4da@linux.ibm.com> <20260212-vsie-alter-stfle-fac-v1-2-d772be74a4da@linux.ibm.com> Content-Language: en-US From: Janosch Frank Autocrypt: addr=frankja@linux.ibm.com; keydata= xsFNBFubpD4BEADX0uhkRhkj2AVn7kI4IuPY3A8xKat0ihuPDXbynUC77mNox7yvK3X5QBO6 qLqYr+qrG3buymJJRD9xkp4mqgasHdB5WR9MhXWKH08EvtvAMkEJLnqxgbqf8td3pCQ2cEpv 15mH49iKSmlTcJ+PvJpGZcq/jE42u9/0YFHhozm8GfQdb9SOI/wBSsOqcXcLTUeAvbdqSBZe zuMRBivJQQI1esD9HuADmxdE7c4AeMlap9MvxvUtWk4ZJ/1Z3swMVCGzZb2Xg/9jZpLsyQzb lDbbTlEeyBACeED7DYLZI3d0SFKeJZ1SUyMmSOcr9zeSh4S4h4w8xgDDGmeDVygBQZa1HaoL Esb8Y4avOYIgYDhgkCh0nol7XQ5i/yKLtnNThubAcxNyryw1xSstnKlxPRoxtqTsxMAiSekk 0m3WJwvwd1s878HrQNK0orWd8BzzlSswzjNfQYLF466JOjHPWFOok9pzRs+ucrs6MUwDJj0S cITWU9Rxb04XyigY4XmZ8dywaxwi2ZVTEg+MD+sPmRrTw+5F+sU83cUstuymF3w1GmyofgsU Z+/ldjToHnq21MNa1wx0lCEipCCyE/8K9B9bg9pUwy5lfx7yORP3JuAUfCYb8DVSHWBPHKNj HTOLb2g2UT65AjZEQE95U2AY9iYm5usMqaWD39pAHfhC09/7NQARAQABzSVKYW5vc2NoIEZy YW5rIDxmcmFua2phQGxpbnV4LmlibS5jb20+wsF3BBMBCAAhBQJbm6Q+AhsjBQsJCAcCBhUI CQoLAgQWAgMBAh4BAheAAAoJEONU5rjiOLn4p9gQALjkdj5euJVI2nNT3/IAxAhQSmRhPEt0 AmnCYnuTcHRWPujNr5kqgtyER9+EMQ0ZkX44JU2q7OWxTdSNSAN/5Z7qmOR9JySvDOf4d3mS bMB5zxL9d8SbnSs1uW96H9ZBTlTQnmLfsiM9TetAjSrR8nUmjGhe2YUhJLR1v1LguME+YseT eXnLzIzqqpu311/eYiiIGcmaOjPCE+vFjcXL5oLnGUE73qSYiujwhfPCCUK0850o1fUAYq5p CNBCoKT4OddZR+0itKc/cT6NwEDwdokeg0+rAhxb4Rv5oFO70lziBplEjOxu3dqgIKbHbjza EXTb+mr7VI9O4tTdqrwJo2q9zLqqOfDBi7NDvZFLzaCewhbdEpDYVu6/WxprAY94hY3F4trT rQMHJKQENtF6ZTQc9fcT5I3gAmP+OEvDE5hcTALpWm6Z6SzxO7gEYCnF+qGXqp8sJVrweMub UscyLqHoqdZC2UG4LQ1OJ97nzDpIRe0g6oJ9ZIYHKmfw5jjwH6rASTld5MFWajWdNsqK15k/ RZnHAGICKVIBOBsq26m4EsBlfCdt3b/6emuBjUXR1pyjHMz2awWzCq6/6OWs5eANZ0sdosNq dq2v0ULYTazJz2rlCXV89qRa7ukkNwdBSZNEwsD4eEMicj1LSrqWDZMAALw50L4jxaMD7lPL jJbazsFNBFubpD4BEADAcUTRqXF/aY53OSH7IwIK9lFKxIm0IoFkOEh7LMfp7FGzaP7ANrZd cIzhZi38xyOkcaFY+npGEWvko7rlIAn0JpBO4x3hfhmhBD/WSY8LQIFQNNjEm3vzrMo7b9Jb JAqQxfbURY3Dql3GUzeWTG9uaJ00u+EEPlY8zcVShDltIl5PLih20e8xgTnNzx5c110lQSu0 iZv2lAE6DM+2bJQTsMSYiwKlwTuv9LI9Chnoo6+tsN55NqyMxYqJgElk3VzlTXSr3+rtSCwf tq2cinETbzxc1XuhIX6pu/aCGnNfuEkM34b7G1D6CPzDMqokNFbyoO6DQ1+fW6c5gctXg/lZ 602iEl4C4rgcr3+EpfoPUWzKeM8JXv5Kpq4YDxhvbitr8Dm8gr38+UKFZKlWLlwhQ56r/zAU v6LIsm11GmFs2/cmgD1bqBTNHHcTWwWtRTLgmnqJbVisMJuYJt4KNPqphTWsPY8SEtbufIlY HXOJ2lqUzOReTrie2u0qcSvGAbSfec9apTFl2Xko/ddqPcZMpKhBiXmY8tJzSPk3+G4tqur4 6TYAm5ouitJsgAR61Cu7s+PNuq/pTLDhK+6/Njmc94NGBcRA4qTuysEGE79vYWP2oIAU4Fv6 gqaWHZ4MEI2XTqH8wiwzPdCQPYsSE0fXWiYu7ObeErT6iLSTZGx4rQARAQABwsFfBBgBCAAJ BQJbm6Q+AhsMAAoJEONU5rjiOLn4DDEP/RuyckW65SZcPG4cMfNgWxZF8rVjeVl/9PBfy01K 8R0hajU40bWtXSMiby7j0/dMjz99jN6L+AJHJvrLz4qYRzn2Ys843W+RfXj62Zde4YNBE5SL jJweRCbMWKaJLj6499fctxTyeb9+AMLQS4yRSwHuAZLmAb5AyCW1gBcTWZb8ON5BmWnRqeGm IgC1EvCnHy++aBnHTn0m+zV89BhTLTUal35tcjUFwluBY39R2ux/HNlBO1GY3Z+WYXhBvq7q katThLjaQSmnOrMhzqYmdShP1leFTVbzXUUIYv/GbynO/YrL2gaQpaP1bEUEi8lUAfXJbEWG dnHFkciryi092E8/9j89DJg4mmZqOau7TtUxjRMlBcIliXkzSLUk+QvD4LK1kWievJse4mte FBdkWHfP4BH/+8DxapRcG1UAheSnSRQ5LiO50annOB7oXF+vgKIaie2TBfZxQNGAs3RQ+bga DchCqFm5adiSP5+OT4NjkKUeGpBe/aRyQSle/RropTgCi85pje/juYEn2P9UAgkfBJrOHvQ9 Z+2Sva8FRd61NJLkCJ4LFumRn9wQlX2icFbi8UDV3do0hXJRRYTWCxrHscMhkrFWLhYiPF4i phX7UNdOWBQ90qpHyAxHmDazdo27gEjfvsgYMdveKknEOTEb5phwxWgg7BcIDoJf9UMC In-Reply-To: <20260212-vsie-alter-stfle-fac-v1-2-d772be74a4da@linux.ibm.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: Deayi7KZ0g7Ipg-N2Rdq7kzYsp645OnT X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMjE4MDEwNyBTYWx0ZWRfX9AuIRe/hxtFo 6KoWj4BmCBU8xUTszNtUnjgL6aeTXH6/r65Og/8CCkyKd9UeL+I8rDropSv5uAjmFO6BqwSNp25 T/wMKLpPCsIQj1umKdUohVmU11ttjHMgoZuODKdmum4E5X644T9yxJVWQHjsM9DW4O5G5kNpz9r FkNlGSkqJrvE/C1U7SHFxcotUY/32lcdWyqtKTnv9LD+KG1gbeiWIRL/bss/HItabNtfr+NOOqc JSF5IPq7QgFR+a8CVpBzo9j24fMVoePagu3rBVRMO75V3kM5FRWT1g4dOyxf8EK6Gh8ZxsRz8K/ ywJcOBe82Kkbv+eZWJVOqLmLPF/BK9uVUiNQgZ1LKNkZSUUyUYqqPm0KySNfYkX7cxAmYvpre7Z S652QPLBAzP47pp803SKRIk2QLha1OHrfZ4j0OtihlnhgqcdGK7GtuTtrWmtuAWGS3R7SvOlf1N cT1DtQa2iZ/DFaK25Cw== X-Proofpoint-GUID: Deayi7KZ0g7Ipg-N2Rdq7kzYsp645OnT X-Authority-Analysis: v=2.4 cv=U+mfzOru c=1 sm=1 tr=0 ts=6995acce cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=IkcTkHD0fZMA:10 a=HzLeVaNsDn8A:10 a=VkNPw1HP01LnGYTKEx00:22 a=Mpw57Om8IfrbqaoTuvik:22 a=GgsMoib0sEa3-_RKJdDe:22 a=VnNF1IyMAAAA:8 a=pEn9Gj0DkaCfSj8do8EA:9 a=QEXdDO2ut3YA:10 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-02-18_02,2026-02-16_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 bulkscore=0 impostorscore=0 malwarescore=0 spamscore=0 adultscore=0 phishscore=0 lowpriorityscore=0 priorityscore=1501 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2602180107 On 2/12/26 10:24, Christoph Schlameuss wrote: > From: Nina Schoetterl-Glausch > > Detect alternate STFLE interpretive execution facility 2. > > Signed-off-by: Nina Schoetterl-Glausch > Signed-off-by: Christoph Schlameuss Reviewed-by: Janosch Frank > --- > arch/s390/include/asm/sclp.h | 1 + > drivers/s390/char/sclp_early.c | 4 +++- > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h > index 0f184dbdbe5e0748fcecbca38b9e55a56968dc79..0f21501d3e866338895caeed385aa4f586384d69 100644 > --- a/arch/s390/include/asm/sclp.h > +++ b/arch/s390/include/asm/sclp.h > @@ -104,6 +104,7 @@ struct sclp_info { > unsigned char has_aisii : 1; > unsigned char has_aeni : 1; > unsigned char has_aisi : 1; > + unsigned char has_astfleie2 : 1; > unsigned int ibc; > unsigned int mtid; > unsigned int mtid_cp; > diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c > index 6bf501ad8ff0ea6d3df0a721f29fd24506409493..22dd797e62291fef087d46ac1c7f805486e3935b 100644 > --- a/drivers/s390/char/sclp_early.c > +++ b/drivers/s390/char/sclp_early.c > @@ -61,8 +61,10 @@ static void __init sclp_early_facilities_detect(void) > sclp.has_sipl = !!(sccb->cbl & 0x4000); > sclp.has_sipl_eckd = !!(sccb->cbl & 0x2000); > } > - if (sccb->cpuoff > 139) > + if (sccb->cpuoff > 139) { > sclp.has_diag324 = !!(sccb->byte_139 & 0x80); > + sclp.has_astfleie2 = !!(sccb->byte_139 & 0x40); > + } > sclp.rnmax = sccb->rnmax ? sccb->rnmax : sccb->rnmax2; > sclp.rzm = sccb->rnsize ? sccb->rnsize : sccb->rnsize2; > sclp.rzm <<= 20; >