From patchwork Fri Nov 29 09:48:08 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Janosch Frank X-Patchwork-Id: 11266997 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EDC59930 for ; Fri, 29 Nov 2019 10:32:01 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CE771215F1 for ; Fri, 29 Nov 2019 10:32:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CE771215F1 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:56844 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iadZA-0000WQ-Hz for patchwork-qemu-devel@patchwork.kernel.org; Fri, 29 Nov 2019 05:32:00 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:48609) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1iactn-0003Hi-8X for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:49:18 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1iacti-0005Mq-CN for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:49:14 -0500 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:44236) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1iactg-0004ZT-DQ for qemu-devel@nongnu.org; Fri, 29 Nov 2019 04:49:10 -0500 Received: from pps.filterd (m0098399.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id xAT9mY9c110150 for ; Fri, 29 Nov 2019 04:48:53 -0500 Received: from e06smtp02.uk.ibm.com (e06smtp02.uk.ibm.com [195.75.94.98]) by mx0a-001b2d01.pphosted.com with ESMTP id 2wjuwh1e7d-1 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=NOT) for ; Fri, 29 Nov 2019 04:48:52 -0500 Received: from localhost by e06smtp02.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Fri, 29 Nov 2019 09:48:47 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06avi18626390.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id xAT9m6Pi47186332 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 29 Nov 2019 09:48:06 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id D0700A4055; Fri, 29 Nov 2019 09:48:45 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 0A590A4051; Fri, 29 Nov 2019 09:48:44 +0000 (GMT) Received: from localhost.localdomain (unknown [9.145.188.128]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Fri, 29 Nov 2019 09:48:43 +0000 (GMT) From: Janosch Frank To: qemu-devel@nongnu.org Subject: [PATCH v2 12/13] s390x: protvirt: Disable address checks for PV guest IO emulation Date: Fri, 29 Nov 2019 04:48:08 -0500 X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191129094809.26684-1-frankja@linux.ibm.com> References: <20191129094809.26684-1-frankja@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 x-cbid: 19112909-0008-0000-0000-00000339D0EE X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19112909-0009-0000-0000-00004A58E03F Message-Id: <20191129094809.26684-13-frankja@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.95,18.0.572 definitions=2019-11-29_02:2019-11-29,2019-11-29 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 spamscore=0 impostorscore=0 priorityscore=1501 adultscore=0 mlxscore=0 bulkscore=0 suspectscore=1 clxscore=1015 malwarescore=0 mlxlogscore=605 lowpriorityscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-1910280000 definitions=main-1911290086 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.156.1 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: thuth@redhat.com, pmorel@linux.ibm.com, david@redhat.com, cohuck@redhat.com, borntraeger@de.ibm.com, qemu-s390x@nongnu.org, mihajlov@linux.ibm.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" IO instruction data is routed through SIDAD for protected guests, so adresses do not need to be checked, as this is kernel memory. Signed-off-by: Janosch Frank Reviewed-by: Thomas Huth --- target/s390x/ioinst.c | 26 +++++++++++++++++++------- 1 file changed, 19 insertions(+), 7 deletions(-) diff --git a/target/s390x/ioinst.c b/target/s390x/ioinst.c index c437a1d8c6..e4102430aa 100644 --- a/target/s390x/ioinst.c +++ b/target/s390x/ioinst.c @@ -17,6 +17,16 @@ #include "trace.h" #include "hw/s390x/s390-pci-bus.h" +static uint64_t get_address_from_regs(CPUS390XState *env, uint32_t ipb, + uint8_t *ar) +{ + if (env->pv) { + *ar = 0; + return 0; + } + return decode_basedisp_s(env, ipb, ar); +} + int ioinst_disassemble_sch_ident(uint32_t value, int *m, int *cssid, int *ssid, int *schid) { @@ -114,7 +124,7 @@ void ioinst_handle_msch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra) CPUS390XState *env = &cpu->env; uint8_t ar; - addr = decode_basedisp_s(env, ipb, &ar); + addr = get_address_from_regs(env, ipb, &ar); if (addr & 3) { s390_program_interrupt(env, PGM_SPECIFICATION, ra); return; @@ -171,7 +181,7 @@ void ioinst_handle_ssch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra) CPUS390XState *env = &cpu->env; uint8_t ar; - addr = decode_basedisp_s(env, ipb, &ar); + addr = get_address_from_regs(env, ipb, &ar); if (addr & 3) { s390_program_interrupt(env, PGM_SPECIFICATION, ra); return; @@ -203,7 +213,7 @@ void ioinst_handle_stcrw(S390CPU *cpu, uint32_t ipb, uintptr_t ra) CPUS390XState *env = &cpu->env; uint8_t ar; - addr = decode_basedisp_s(env, ipb, &ar); + addr = get_address_from_regs(env, ipb, &ar); if (addr & 3) { s390_program_interrupt(env, PGM_SPECIFICATION, ra); return; @@ -234,7 +244,7 @@ void ioinst_handle_stsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, CPUS390XState *env = &cpu->env; uint8_t ar; - addr = decode_basedisp_s(env, ipb, &ar); + addr = get_address_from_regs(env, ipb, &ar); if (addr & 3) { s390_program_interrupt(env, PGM_SPECIFICATION, ra); return; @@ -303,7 +313,7 @@ int ioinst_handle_tsch(S390CPU *cpu, uint64_t reg1, uint32_t ipb, uintptr_t ra) return -EIO; } trace_ioinst_sch_id("tsch", cssid, ssid, schid); - addr = decode_basedisp_s(env, ipb, &ar); + addr = get_address_from_regs(env, ipb, &ar); if (addr & 3) { s390_program_interrupt(env, PGM_SPECIFICATION, ra); return -EIO; @@ -601,7 +611,7 @@ void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb, uintptr_t ra) { ChscReq *req; ChscResp *res; - uint64_t addr; + uint64_t addr = 0; int reg; uint16_t len; uint16_t command; @@ -610,7 +620,9 @@ void ioinst_handle_chsc(S390CPU *cpu, uint32_t ipb, uintptr_t ra) trace_ioinst("chsc"); reg = (ipb >> 20) & 0x00f; - addr = env->regs[reg]; + if (!env->pv) { + addr = env->regs[reg]; + } /* Page boundary? */ if (addr & 0xfff) { s390_program_interrupt(env, PGM_SPECIFICATION, ra);