From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 42101CA5FA5 for ; Mon, 28 Sep 2026 14:23:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=269Qr/2f+mli5iZf5LjqCG3Wsfifp4/qh4IuSPn08jE=; b=BXSmnCJOSRUPFwg9teSJfCglZN 6QpBZXeDeHLIJQ1wgclxsbfkew9mnWNac4Kq8CdS/x9ZbzDw+eM6UdjPw7kawLNlA0WXc+iDB8bWG 5skcz4nBEKRQlV4lAqReoqtsqJcPA4B43nx7sCCAr6eL3g3j4xl8/tvHAHu9oo8yEPUamzYoxjzK1 DrMcXkUppg35oSzI39fMSjOQ8ZYlzqJKOdXBHmz64QESNNsRI1GwWp5jpUGDv73JoUr7EDYPMaMte UWPhszFXYfXxWoWxd1wX2Ca/5DoTfdoBsIgnKrBHjm0JvNQ7s6GN9nhYfr9LQI74vNVwtQRJvXL/R gbeRqvtQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xBCGQ-00000000kfr-0aCC; Mon, 28 Sep 2026 14:23:30 +0000 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1xBCGN-00000000kfR-08ky for linux-arm-kernel@lists.infradead.org; Mon, 28 Sep 2026 14:23:28 +0000 Received: from pps.filterd (m0360083.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 68SBZZVv1047082; Mon, 28 Sep 2026 14:23:13 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-type:date:from:in-reply-to:message-id:mime-version :references:subject:to; s=pp1; bh=269Qr/2f+mli5iZf5LjqCG3Wsfifp4 /qh4IuSPn08jE=; b=SgtpN1qASY6d0PD/W/Oe9D2ym8/5/iRdQSQ2eFEdKDxVVH j6H0M5X2Zyhsgvl4VyUy6p0mmA8bpfwCe6Eb3/MFepx1LTfznN21FX09qLp7krhi IpbWporLsvfFTZkapCZ7CSjWSgzzAhRUwMNSzOse2Z6j65mkUzJWhS6/Fm6azY5v VrTIlF8e5POPLfPhDBoZC21D3QuJcW6VF/5OC6sVdHbOQ83gsNC+iNCXxdKkphGB SeCA3e4xtKDID0US2EbHCiRrqw7xYWMds29o7dxeiWY+IKDjoeMqIdVh5rjdVQDv HsKmQgvgBsXLojZD8vL+2FUuu2PeWvPxlEaJsYTg== Received: from ppma23.wdc07v.mail.ibm.com (5d.69.3da9.ip4.static.sl-reverse.com [169.61.105.93]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4gx5j51y8x-1 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Mon, 28 Sep 2026 14:23:13 +0000 (GMT) Received: from pps.filterd (ppma23.wdc07v.mail.ibm.com [127.0.0.1]) by ppma23.wdc07v.mail.ibm.com (8.18.1.11/8.18.1.11) with ESMTP id 68SBHufQ076700; Mon, 28 Sep 2026 14:23:12 GMT Received: from smtprelay02.fra02v.mail.ibm.com ([9.218.2.226]) by ppma23.wdc07v.mail.ibm.com (PPS) with ESMTPS id 4gxsvhdgya-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 28 Sep 2026 14:23:11 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (smtpav05.fra02v.mail.ibm.com [10.20.54.104]) by smtprelay02.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 68SEN1Zh55705980 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 28 Sep 2026 14:23:01 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 38ABC20040; Mon, 28 Sep 2026 14:23:01 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5552B2004D; Mon, 28 Sep 2026 14:23:00 +0000 (GMT) Received: from osiris (unknown [9.87.129.112]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTPS; Mon, 28 Sep 2026 14:23:00 +0000 (GMT) Date: Mon, 28 Sep 2026 16:22:58 +0200 From: Steffen Eiden To: Hendrik Brueckner Cc: kvm@vger.kernel.org, kvmarm@lists.linux.dev, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org, Alexander Gordeev , Andreas Grapentin , Arnd Bergmann , Catalin Marinas , Christian Borntraeger , Claudio Imbrenda , David Hildenbrand , Friedrich Welter , Fuad Tabba , Gautam Gala , Hariharan Mari , Heiko Carstens , 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: Re: [PATCH v8 23/29] KVM: s390: Add basic arm64 kvm module Message-ID: <20260928142258.53077-B-seiden@linux.ibm.com> References: <20260918133107.1042730-1-seiden@linux.ibm.com> <20260918133107.1042730-24-seiden@linux.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYwOTI4MDA1NiBTYWx0ZWRfX5dsVumWdYdWF AZKYtE84fjB98wl/6dKGXlvs+Ly0IWzRCQtvVYltXc1mz74v1LhjwW6iWDIHvD2yRLVeoi+m7Mu yIk64PRIjmPyPlIfSdGB+VOWLJva8y4= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwOTI4MDA1NiBTYWx0ZWRfX1BAFPlgJV6Nv OXuy0WD/1RHa0kE+XIyTFbFO0IriHeyB0GcbFKbrEk8jdJ0wmFsNwH5qPRXpsYgmjbSg+5w0LIQ tcxLO+zEOA+xHAAbg1KOw+eY5rjOUvN8sHC7rD5TEMrFcGeULBy1iIklCpZ/dkV+M+UzrPLQ9+E cnBqCflGGYWtjXzUZWTWpeVt6yiq+hbX/zgc1c2pgY0eUKYVn2vsJAFhZkrVqmaYBEmwCa+Nq5+ jOrXaFxPCoQZZjWm46w595wiEMMZkm1EvkInymRJ4ZBlGi/qDLOAJeabAu97U4X2g0vcrKKbdTQ 3thPAiKwu33JqADp2A6jHwtzHwyUCz0jU+nM9gT4zH1H1a5VhJvDpf6VoTQgvEDMRXpIOYHNW90 6hRy/f0GcczR20Nvqz10T/S8rpOrc80UtbSY+6nijgyTmln/Yok1fUAu5oQKbbhHcNprHz7Sy+k dzmHX6gNcIvh7qwV4XA== X-Proofpoint-GUID: -opRUxCBQ87ofTNi4olODdbsoM2GysKf X-Authority-Analysis: v=2.4 cv=RKcmjIi+ c=1 sm=1 tr=0 ts=6aba7851 cx=c_pps a=3Bg1Hr4SwmMryq2xdFQyZA==:117 a=3Bg1Hr4SwmMryq2xdFQyZA==:17 a=kj9zAlcOel0A:10 a=VdqzKS8jKosA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=iQ6ETzBq9ecOQQE5vZCe:22 a=VnNF1IyMAAAA:8 a=kmqKt6rW6CT7MOcbZeAA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-ORIG-GUID: QDIhRafS2tv1KtcByMsVqsVtQuv9E7le 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=2026-09-28_03,2026-09-21_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 spamscore=0 bulkscore=0 impostorscore=0 adultscore=0 lowpriorityscore=0 suspectscore=0 malwarescore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2609280056 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260928_072327_085166_D1B6DA55 X-CRM114-Status: GOOD ( 21.81 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Sep 28, 2026 at 04:15:58PM +0200, Hendrik Brueckner wrote: > On Fri, Sep 18, 2026 at 03:31:00PM +0200, Steffen Eiden wrote: > > Add basic code for the new arm64 on s390 KVM implementation. > > Add kernel module boilerplate code and trivial functions. > > Add tracing scaffolding. > > > > Signed-off-by: Steffen Eiden > > --- > > arch/s390/kvm/arm64/arm.c | 147 ++++++++++++++++++++++++++++++++++++ > > arch/s390/kvm/arm64/arm.h | 44 +++++++++++ > > arch/s390/kvm/arm64/guest.c | 92 ++++++++++++++++++++++ > > arch/s390/kvm/arm64/trace.h | 18 +++++ > > 4 files changed, 301 insertions(+) > > create mode 100644 arch/s390/kvm/arm64/arm.c > > create mode 100644 arch/s390/kvm/arm64/arm.h > > create mode 100644 arch/s390/kvm/arm64/guest.c > > create mode 100644 arch/s390/kvm/arm64/trace.h > > > > diff --git a/arch/s390/kvm/arm64/arm.c b/arch/s390/kvm/arm64/arm.c > > new file mode 100644 > > index 000000000000..8b056fc836d7 > > --- /dev/null > > +++ b/arch/s390/kvm/arm64/arm.c > > [..] > > > +static int __init kvm_s390_arm64_init(void) > > +{ > > + if (!sclp.has_aef) > > + return -ENXIO; > > I suggest to use -ENODEV here to be consistent with s390 kvm module. > The arm64 module also return -ENODEV when not available. Makes sense. Thanks Steffen