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Tue, 28 Apr 2026 16:05:35 +0000 (GMT) Received: from tuxmaker.boeblingen.de.ibm.com (unknown [9.87.85.9]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 28 Apr 2026 16:05:35 +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: Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Gautam Gala , Hendrik Brueckner , Janosch Frank , Joey Gouly , Marc Zyngier , Nina Schoetterl-Glausch , Oliver Upton , Paolo Bonzini , Suzuki K Poulose , Ulrich Weigand , Will Deacon , Zenghui Yu Subject: [RFC PATCH v2 23/28] s390/hwcaps: Report SAE support as hwcap Date: Tue, 28 Apr 2026 18:05:20 +0200 Message-ID: <20260428160527.1378085-24-seiden@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260428160527.1378085-1-seiden@linux.ibm.com> References: <20260428160527.1378085-1-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-Spam-Details-Enc: AW1haW4tMjYwNDI4MDE1MSBTYWx0ZWRfX/0RJHi/FrDj5 xlUeTNFrM6RrTFImKtX44CxjpyxZCb1njS48vljIEId1CHoyVD1JolVn+dfdjFdb3ZMZLPPruQe mpb7qz6mlg2k2o+6VRwxXnsNp48VJbFL9yTaYCcIxbusFF3gBU8Xk44MLDsUWIXFI4lS0HTQePw 7Da/rgXLSolg4pBvXf0v0PhDGezJcxK4Kt0hxmu+5vYKfuks00zlKueFxVJi5oV/CO6rQRi85w2 QZPmV5KtR0N4wPbbeY4dT08MMttKb1MtA4DGsRhSYp+On7RCQiPfPxL0QvmGRPPC9H40PMxS6Gg JBKpjZBzdgxJz6gd63Txva65lTBZEnzPxq1uNcUxu6Uau8q9EbaKHHxqh9iOkAlF15jqvli3M3b mTOC+JdhBBDsuFIaunuKdRshbiKrZhwwUs7tJIzbM3Smq2y4qAZuvgERrW5PUayjgrJaqzMeUDA HFN/nGCrjjLdSZVhY7Q== X-Proofpoint-GUID: a1C7GTTqWwp2RShDVGisvbSK-awuue9Z X-Proofpoint-ORIG-GUID: a1C7GTTqWwp2RShDVGisvbSK-awuue9Z X-Authority-Analysis: v=2.4 cv=MohiLWae c=1 sm=1 tr=0 ts=69f0dad4 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=A5OVakUREuEA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VnNF1IyMAAAA:8 a=MMtvGDNtdIwsdepEW5QA:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-04-28_05,2026-04-28_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 adultscore=0 suspectscore=0 bulkscore=0 spamscore=0 priorityscore=1501 malwarescore=0 clxscore=1015 lowpriorityscore=0 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2604200000 definitions=main-2604280151 From: Hendrik Brueckner Report SAE support as hwcap (and /proc/cpuinfo) Signed-off-by: Hendrik Brueckner 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 0f184dbdbe5e..18e46654227a 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -52,7 +52,9 @@ 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; @@ -104,6 +106,7 @@ struct sclp_info { unsigned char has_aisii : 1; unsigned char has_aeni : 1; unsigned char has_aisi : 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 6bf501ad8ff0..26a76f09b19a 100644 --- a/drivers/s390/char/sclp_early.c +++ b/drivers/s390/char/sclp_early.c @@ -94,6 +94,7 @@ 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; } -- 2.51.0