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Wed, 30 Sep 2026 17:34:48 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav06.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 30 Sep 2026 17:34:48 +0000 (GMT) From: Steffen Eiden To: kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Cc: Alexander Gordeev , Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Friedrich Welter , Fuad Tabba , Gautam Gala , Hariharan Mari , Heiko Carstens , Hendrik Brueckner , Ilya Leoshkevich , Janosch Frank , Joey Gouly , Marc Zyngier , Nico Boehr , Nina Schoetterl-Glausch , Oliver Upton , Paolo Bonzini , Sean Christopherson , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu Subject: [PATCH v9 18/24] s390/hwcaps: Report SAE support as hwcap Date: Wed, 30 Sep 2026 19:34:33 +0200 Message-ID: <20260930173441.66762-19-seiden@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260930173441.66762-1-seiden@linux.ibm.com> References: <20260930173441.66762-1-seiden@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTMwMDA2OCBTYWx0ZWRfX92RE+/4pemds B4xMqAjDfroXObyCDgcBDPGh3bpnTdDRe1esIhSpaQZ9dfZjRzDhn9MD/p1wxkuwQYJVCY15D8+ YeeFyJDktuI7N/zm6NrC5DoqLwArolg= X-Authority-Analysis: v=2.4 cv=HJ5WhYtv c=1 sm=1 tr=0 ts=6abd4843 cx=c_pps a=5BHTudwdYE3Te8bg5FgnPg==:117 a=5BHTudwdYE3Te8bg5FgnPg==:17 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=U7nrCbtTmkRpXpFmAIza:22 a=VnNF1IyMAAAA:8 a=MMtvGDNtdIwsdepEW5QA:9 X-Proofpoint-GUID: b9ekAwtunJkge1FuSyNcce54BYbHrktu X-Proofpoint-ORIG-GUID: B3ccF0ekupMMBfHHMcdEXxy0zWMcFzLq X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTMwMDA2OCBTYWx0ZWRfX/O+BFCu9JP37 A4JzZygVbSVPPNIioNx9Kfwr3PXf0DpTqHn8bKOpwZyr4Mr8VhG8n1TSjtfHoXVmvQePJ0Vhsim kOHc8n4CVsM+lqhp5qtukFq/JIhKM5UYEGf+/V9AwgkKG+FnHAmOAClNlepPYOvd/uorNQ0/VX9 WKhWY/zBZbtvuAJI0jevr76yFbNYPaclthZti6tCC8ReZPyFC8viNQUQs9xTWhEr6DopJ728Ipw uYS5ab9xIJe7kXzD49z6Bb15zr9ukpOLZhv5tzIwOEi3mWUKVD8+SPJy3c66cowNEJKS/NIklgk DClLH/bo+yhHJ2wgqJVru6Lh/H6/nI/h/ewhCMHTUE5ArH0TTyQaO9hcywMQDK29bo9zKlOw6av /+kRRP4TTmcHgqxog7piWzcs/q9iOJ9ab1hCRCiBRPBLzpHpk+65P7S5agoVEKz6908UGgMHUoV Ipj9nWvUTwJ87duGtMA== 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=2026-09-30_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 suspectscore=0 bulkscore=0 clxscore=1015 lowpriorityscore=0 spamscore=0 impostorscore=0 phishscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609300068 From: Hendrik Brueckner Report SAE support as hwcap (and /proc/cpuinfo) Signed-off-by: Hendrik Brueckner Reviewed-by: Steffen Eiden Reviewed-by: Janosch Frank Reviewed-by: Ilya Leoshkevich Signed-off-by: Steffen Eiden --- arch/s390/include/asm/elf.h | 2 ++ arch/s390/include/asm/sclp.h | 5 ++++- arch/s390/kernel/processor.c | 3 +++ drivers/s390/char/sclp_early.c | 1 + 4 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h index bb63fa4d20bb..ad3108ecfb07 100644 --- a/arch/s390/include/asm/elf.h +++ b/arch/s390/include/asm/elf.h @@ -123,6 +123,7 @@ enum { HWCAP_NR_NNPA = 20, HWCAP_NR_PCI_MIO = 21, HWCAP_NR_SIE = 22, + HWCAP_NR_SAE = 23, HWCAP_NR_MAX }; @@ -150,6 +151,7 @@ enum { #define HWCAP_NNPA BIT(HWCAP_NR_NNPA) #define HWCAP_PCI_MIO BIT(HWCAP_NR_PCI_MIO) #define HWCAP_SIE BIT(HWCAP_NR_SIE) +#define HWCAP_SAE BIT(HWCAP_NR_SAE) /* * These are used to set parameters in the core dumps. diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h index 44066550b9b1..68f61b71a2d5 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -56,7 +56,9 @@ struct sclp_core_entry { u8 siif : 1; u8 sigpif : 1; u8 : 3; - u8 reserved2[3]; + u8 aef: 1; + u8 : 7; + u8 reserved2[2]; u8 : 2; u8 ib : 1; u8 cei : 1; @@ -109,6 +111,7 @@ struct sclp_info { unsigned char has_aeni : 1; unsigned char has_aisi : 1; unsigned char has_astfleie2 : 1; + unsigned char has_aef : 1; unsigned int ibc; unsigned int mtid; unsigned int mtid_cp; diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index e33a3eccda56..6da55a158027 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -150,6 +150,7 @@ static void show_cpu_summary(struct seq_file *m, void *v) [HWCAP_NR_NNPA] = "nnpa", [HWCAP_NR_PCI_MIO] = "pcimio", [HWCAP_NR_SIE] = "sie", + [HWCAP_NR_SAE] = "sae", }; int i, cpu; @@ -254,6 +255,8 @@ static int __init setup_hwcaps(void) /* virtualization support */ if (sclp.has_sief2) elf_hwcap |= HWCAP_SIE; + if (sclp.has_aef) + elf_hwcap |= HWCAP_SAE; return 0; } diff --git a/drivers/s390/char/sclp_early.c b/drivers/s390/char/sclp_early.c index 22dd797e6229..e58d24b95bd1 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -96,6 +96,7 @@ static void __init sclp_early_facilities_detect(void) sclp.has_ib = cpue->ib; sclp.has_cei = cpue->cei; sclp.has_skey = cpue->skey; + sclp.has_aef = cpue->aef; break; } -- 2.53.0