From patchwork Wed Aug 7 15:45:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Christoph Schlameuss X-Patchwork-Id: 817847 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EA66484DE4; Wed, 7 Aug 2024 15:45:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723045552; cv=none; b=cXhkgVJ7jCLCKws7AMbiG3RglJPxHBM55Vkb7p10lFdwxxGKrDv5O3YqVIi2eB2ouP/zpg9+TK12Qxn3hq356LzumtHVhh2hIBPwHFedpaeqX0VScdQzIRgEFxM0XxfOoijZPNhE8dIM1m7AyReThZpDStA6au4wjAgiqeJ4xn0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723045552; c=relaxed/simple; bh=+mkHmIf30k2/pBq5eBe+nbSwl+zjVJK4lMY2jSgC+Fk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=XFT51LXVOPk6kd4jf1upvkp5BEpU1Qg1SxEyjI4bC5aFNbJnBWX8x7yy7GzKCqFjofABq3B1720beZb1mUuM5bH7PjE33wrhYfOzLd/dcz0Ah21PTazL3uF5RXaBxrDcQ6Hu8phLctc1EP5wLJXSPCm26Kf1Wwxmkjh8nb2WoV0= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=sm3waRV4; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="sm3waRV4" Received: from pps.filterd (m0353722.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 4772N8o4018168; Wed, 7 Aug 2024 15:45:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=from :to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=pp1; bh=CQVE+7lZFt67L k1a6Weg4umdrl8LYQgh9ieQEGFFGP8=; b=sm3waRV4wf73Ge2JJ2t1cwDFvA8b3 Uh6hcGy2sU3eDFiwbg9qwzV95EJY29niVYCLvQTZq+gx1uen3srkj5qhZTJHb0XI 22zIdDNyGI7qkbP7nJNIj5SHBsmJT6msAfV06V3Nh4AZxGTZ1Xgw8Sp+SmHW83WO BekvpTM+82wRQSHNQjYaMjS18Dyb5w4Mzyg/Hg0cDwCIwCAMBbiCxtJ1wROJoT6x 0Ox9FwaJncZ9B9mF4gXBjgkML13lFCBevjF/1Bq/KlHbyW8WkTmY39bD5Kuoryc0 u/8BYOXzo6Fbfyu43lntaE1rTWsOm8hMDJW4jQ+5RqPkZhWRZmZaN3W+Q== Received: from pps.reinject (localhost [127.0.0.1]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 40urpuacem-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Aug 2024 15:45:44 +0000 (GMT) Received: from m0353722.ppops.net (m0353722.ppops.net [127.0.0.1]) by pps.reinject (8.18.0.8/8.18.0.8) with ESMTP id 477Fji6L009393; Wed, 7 Aug 2024 15:45:44 GMT Received: from ppma11.dal12v.mail.ibm.com (db.9e.1632.ip4.static.sl-reverse.com [50.22.158.219]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 40urpuaceh-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Aug 2024 15:45:44 +0000 (GMT) Received: from pps.filterd (ppma11.dal12v.mail.ibm.com [127.0.0.1]) by ppma11.dal12v.mail.ibm.com (8.17.1.19/8.17.1.19) with ESMTP id 477DFCjU030487; Wed, 7 Aug 2024 15:45:43 GMT Received: from smtprelay01.fra02v.mail.ibm.com ([9.218.2.227]) by ppma11.dal12v.mail.ibm.com (PPS) with ESMTPS id 40t1k39b3g-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Wed, 07 Aug 2024 15:45:43 +0000 Received: from smtpav01.fra02v.mail.ibm.com (smtpav01.fra02v.mail.ibm.com [10.20.54.100]) by smtprelay01.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 477Fjchm55181626 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 7 Aug 2024 15:45:40 GMT Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 03A7920040; Wed, 7 Aug 2024 15:45:38 +0000 (GMT) Received: from smtpav01.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B56F52006A; Wed, 7 Aug 2024 15:45:37 +0000 (GMT) Received: from darkmoore.boeblingen.de.ibm.com (unknown [9.155.210.150]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTP; Wed, 7 Aug 2024 15:45:37 +0000 (GMT) From: Christoph Schlameuss To: kvm@vger.kernel.org Cc: linux-s390@vger.kernel.org, linux-kselftest@vger.kernel.org, Paolo Bonzini , Shuah Khan , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , David Hildenbrand , Nina Schoetterl-Glausch , schlameuss@linux.ibm.com Subject: [PATCH v5 08/10] selftests: kvm: s390: Add uc_skey VM test case Date: Wed, 7 Aug 2024 17:45:10 +0200 Message-ID: <20240807154512.316936-9-schlameuss@linux.ibm.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240807154512.316936-1-schlameuss@linux.ibm.com> References: <20240807154512.316936-1-schlameuss@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: 9_k6yNsyyx2RxWX3doIr-5SvcrfyxeRG X-Proofpoint-GUID: vZO6m4WxpM9_UBEBti9Ojv53-VLI8g3m X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.28.16 definitions=2024-08-07_11,2024-08-07_01,2024-05-17_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 adultscore=0 mlxscore=0 lowpriorityscore=0 mlxlogscore=999 malwarescore=0 priorityscore=1501 suspectscore=0 clxscore=1015 phishscore=0 bulkscore=0 spamscore=0 impostorscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2407110000 definitions=main-2408070107 Add a test case manipulating s390 storage keys from within the ucontrol VM. Signed-off-by: Christoph Schlameuss --- .../selftests/kvm/s390x/ucontrol_test.c | 78 +++++++++++++++++++ 1 file changed, 78 insertions(+) diff --git a/tools/testing/selftests/kvm/s390x/ucontrol_test.c b/tools/testing/selftests/kvm/s390x/ucontrol_test.c index 8b978064e753..8194cc215dad 100644 --- a/tools/testing/selftests/kvm/s390x/ucontrol_test.c +++ b/tools/testing/selftests/kvm/s390x/ucontrol_test.c @@ -80,6 +80,32 @@ asm("test_mem_asm:\n" " j 0b\n" ); +/* Test program manipulating storage keys */ +extern char test_skey_asm[]; +asm("test_skey_asm:\n" + "xgr %r0, %r0\n" + + "0:\n" + " ahi %r0,1\n" + " st %r1,0(%r5,%r6)\n" + + " iske %r1,%r6\n" + " ahi %r0,1\n" + " diag 0,0,0x44\n" + + " sske %r1,%r6\n" + " iske %r1,%r6\n" + " ahi %r0,1\n" + " diag 0,0,0x44\n" + + " rrbe %r1,%r6\n" + " iske %r1,%r6\n" + " ahi %r0,1\n" + " diag 0,0,0x44\n" + + " j 0b\n" +); + FIXTURE(uc_kvm) { struct kvm_s390_sie_block *sie_block; @@ -390,6 +416,58 @@ static void uc_assert_diag44(FIXTURE_DATA(uc_kvm) * self) TEST_ASSERT_EQ(0x440000, sie_block->ipb); } +TEST_F(uc_kvm, uc_skey) +{ + u64 test_vaddr = self->base_gpa + VM_MEM_SIZE - (SZ_1M / 2); + struct kvm_sync_regs *sync_regs = &self->run->s.regs; + struct kvm_run *run = self->run; + u8 skeyvalue = 0x34; + + init_st_pt(self); + + /* copy test_skey_asm to code_hva / code_gpa */ + TH_LOG("copy code %p to vm mapped memory %p / %p", + &test_skey_asm, (void *)self->code_hva, (void *)self->code_gpa); + memcpy((void *)self->code_hva, &test_skey_asm, PAGE_SIZE); + + /* set register content for test_skey_asm to access not mapped memory */ + sync_regs->gprs[1] = skeyvalue; + sync_regs->gprs[5] = self->base_gpa; + sync_regs->gprs[6] = test_vaddr; + run->kvm_dirty_regs |= KVM_SYNC_GPRS; + + self->sie_block->ictl |= ICTL_OPEREXC | ICTL_PINT; + self->sie_block->cpuflags &= ~CPUSTAT_KSS; + /* DAT enabled + 64 bit mode */ + run->psw_mask = 0x0400000180000000ULL; + run->psw_addr = self->code_gpa; + + ASSERT_EQ(0, uc_run_once(self)); + ASSERT_EQ(false, uc_handle_exit(self)); + ASSERT_EQ(2, sync_regs->gprs[0]); + /* assert initial skey (ACC = 0, R & C = 1) */ + ASSERT_EQ(0x06, sync_regs->gprs[1]); + uc_assert_diag44(self); + + sync_regs->gprs[1] = skeyvalue; + run->kvm_dirty_regs |= KVM_SYNC_GPRS; + ASSERT_EQ(0, uc_run_once(self)); + ASSERT_EQ(false, uc_handle_exit(self)); + ASSERT_EQ(3, sync_regs->gprs[0]); + ASSERT_EQ(skeyvalue, sync_regs->gprs[1]); + uc_assert_diag44(self); + + sync_regs->gprs[1] = skeyvalue; + run->kvm_dirty_regs |= KVM_SYNC_GPRS; + ASSERT_EQ(0, uc_run_once(self)); + ASSERT_EQ(false, uc_handle_exit(self)); + ASSERT_EQ(4, sync_regs->gprs[0]); + /* assert R reset but rest of skey unchanged*/ + ASSERT_EQ(skeyvalue & 0xfa, sync_regs->gprs[1]); + ASSERT_EQ(0x00, sync_regs->gprs[1] & 0x04); + uc_assert_diag44(self); +} + TEST_F(uc_kvm, uc_map_unmap) { struct kvm_sync_regs *sync_regs = &self->run->s.regs;