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Mon, 6 Jul 2026 08:52:38 +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 , 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 , Suzuki K Poulose , Sven Schnelle , Ulrich Weigand , Vasily Gorbik , Will Deacon , Zenghui Yu Subject: [PATCH v4 21/27] s390/hwcaps: Report SAE support as hwcap Date: Mon, 6 Jul 2026 10:52:21 +0200 Message-ID: <20260706085229.979525-22-seiden@linux.ibm.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260706085229.979525-1-seiden@linux.ibm.com> References: <20260706085229.979525-1-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-Authority-Analysis: v=2.4 cv=M7J97Sws c=1 sm=1 tr=0 ts=6a4b6cde cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VnNF1IyMAAAA:8 a=MMtvGDNtdIwsdepEW5QA:9 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzA2MDA4OCBTYWx0ZWRfX3LFzXaqOp2vI cxMzO2jfp5S8vn31VR+dzZ4VH8lwGtSmwdLIB5820AsD8yLKjtUknjpUeIxE3J024tEzIBx264W prM7jVHGWxqwK9ZK3sg6Cmk0n9iM5S82foWV/xicwd3ynJY6zYPy7slFEnBDI9X3AbHGtngJNHZ YRkcFtFvbwOmxe3BSYanx4meRoPit1BArcWyNEBTC4bie6G8c2nAG6VLzZDj+Artm+ZZ2kd2Xg3 Ml3KmDJrZmrd/LK7HNbaQNdlCXP6SfdpSRNrH9MMdho8KtYmlo1yo0CxeFhGCUUhONrvPJGk4Vk rZTda45tYCsMlLLpe+5uLJrdylPrX64frElBVvG1xLV0ZlNipMcmYoYUXsRHF5nmcRMBubqGmwc 2G27y1FgPzLpot/qjq/Dxp9CwzyKx6e5DbWUBJ5qOV/GRqYr1bGGrbUEHwILkt/vDOKRGeG5PQY Osmc91Kk+SzkjVzm4fg== X-Proofpoint-Spam-Info: AW1haW4tMjYwNzA2MDA4OCBTYWx0ZWRfX9Ym6myaCWJG0 Trm2rWmPmbay/soLvkSdnU9CcbzRtftSomOVfqLh8pNXSjM+0LCYmvgYnktbw9sNDbBag5GhcvA dBmYn+AXa/BuDLptrT+3kDIfn9Uf8BQ= X-Proofpoint-GUID: 4Cyx8GMJTLOQKR5J7phq5SKoY35iq4Wb X-Proofpoint-ORIG-GUID: 4Cyx8GMJTLOQKR5J7phq5SKoY35iq4Wb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-05_02,2026-07-03_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 malwarescore=0 clxscore=1015 adultscore=0 priorityscore=1501 bulkscore=0 spamscore=0 impostorscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607060088 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 f2d490558054..f669569cf78d 100644 --- a/arch/s390/include/asm/sclp.h +++ b/arch/s390/include/asm/sclp.h @@ -53,7 +53,9 @@ 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; @@ -106,6 +108,7 @@ 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