From nobody Fri Oct 24 12:45:35 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) client-ip=208.118.235.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zoho.com: domain of gnu.org designates 208.118.235.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) by mx.zohomail.com with SMTPS id 1519152718429153.423362966676; Tue, 20 Feb 2018 10:51:58 -0800 (PST) Received: from localhost ([::1]:57279 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eoD1B-0004ex-FU for importer@patchew.org; Tue, 20 Feb 2018 13:51:57 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:37282) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eoCuo-0007u0-De for qemu-devel@nongnu.org; Tue, 20 Feb 2018 13:45:23 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eoCuh-0002X0-TV for qemu-devel@nongnu.org; Tue, 20 Feb 2018 13:45:22 -0500 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:43378 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1eoCuh-0002WJ-Nf for qemu-devel@nongnu.org; Tue, 20 Feb 2018 13:45:15 -0500 Received: from pps.filterd (m0098413.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.22/8.16.0.22) with SMTP id w1KIj0FE012735 for ; Tue, 20 Feb 2018 13:45:12 -0500 Received: from e06smtp15.uk.ibm.com (e06smtp15.uk.ibm.com [195.75.94.111]) by mx0b-001b2d01.pphosted.com with ESMTP id 2g8qefck11-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 20 Feb 2018 13:45:11 -0500 Received: from localhost by e06smtp15.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Tue, 20 Feb 2018 18:45:07 -0000 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id w1KIj63n40304684; Tue, 20 Feb 2018 18:45:06 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 9402A11C04A; Tue, 20 Feb 2018 18:38:10 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 641A411C054; Tue, 20 Feb 2018 18:38:10 +0000 (GMT) Received: from p-imbrenda.boeblingen.de.ibm.com (unknown [9.152.224.168]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Tue, 20 Feb 2018 18:38:10 +0000 (GMT) From: Claudio Imbrenda To: kvm390-list@tuxmaker.boeblingen.de.ibm.com Date: Tue, 20 Feb 2018 19:45:02 +0100 X-Mailer: git-send-email 2.7.4 In-Reply-To: <1519152302-19079-1-git-send-email-imbrenda@linux.vnet.ibm.com> References: <1519152302-19079-1-git-send-email-imbrenda@linux.vnet.ibm.com> X-TM-AS-GCONF: 00 x-cbid: 18022018-0020-0000-0000-000003F9BC41 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 18022018-0021-0000-0000-0000428DCAA5 Message-Id: <1519152302-19079-4-git-send-email-imbrenda@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2018-02-20_07:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 impostorscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1709140000 definitions=main-1802200225 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH v1 3/3] s390x/sclp: extend SCLP event masks to 64 bits X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: borntraeger@de.ibm.com, qemu-s390x@nongnu.org, cohuck@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail: RSF_0 Z_629925259 SPT_0 Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Extend the SCLP event masks to 64 bits. This will make us future proof against future extensions of the architecture. Notice that using any of the new bits results in a state that cannot be migrated to an older version. Signed-off-by: Claudio Imbrenda --- hw/s390x/event-facility.c | 43 +++++++++++++++++++++++++++++++++--= ---- include/hw/s390x/event-facility.h | 2 +- 2 files changed, 38 insertions(+), 7 deletions(-) diff --git a/hw/s390x/event-facility.c b/hw/s390x/event-facility.c index f6f28fd..e71302a 100644 --- a/hw/s390x/event-facility.c +++ b/hw/s390x/event-facility.c @@ -30,7 +30,10 @@ struct SCLPEventFacility { SysBusDevice parent_obj; SCLPEventsBus sbus; /* guest' receive mask */ - sccb_mask_t receive_mask; + union { + uint32_t receive_mask_compat32; + sccb_mask_t receive_mask; + }; /* * when false, we keep the same broken, backwards compatible behaviour= as * before; when true, we implement the architecture correctly. Needed = for @@ -261,7 +264,7 @@ static void read_event_data(SCLPEventFacility *ef, SCCB= *sccb) case SCLP_SELECTIVE_READ: copy_mask((uint8_t *)&sclp_active_selection_mask, (uint8_t *)&red-= >mask, sizeof(sclp_active_selection_mask), ef->mask_length); - sclp_active_selection_mask =3D be32_to_cpu(sclp_active_selection_m= ask); + sclp_active_selection_mask =3D be64_to_cpu(sclp_active_selection_m= ask); if (!sclp_cp_receive_mask || (sclp_active_selection_mask & ~sclp_cp_receive_mask)) { sccb->h.response_code =3D @@ -301,13 +304,13 @@ static void write_event_mask(SCLPEventFacility *ef, S= CCB *sccb) /* keep track of the guest's capability masks */ copy_mask((uint8_t *)&tmp_mask, WEM_CP_RECEIVE_MASK(we_mask, mask_leng= th), sizeof(tmp_mask), mask_length); - ef->receive_mask =3D be32_to_cpu(tmp_mask); + ef->receive_mask =3D be64_to_cpu(tmp_mask); =20 /* return the SCLP's capability masks to the guest */ - tmp_mask =3D cpu_to_be32(get_host_receive_mask(ef)); + tmp_mask =3D cpu_to_be64(get_host_receive_mask(ef)); copy_mask(WEM_RECEIVE_MASK(we_mask, mask_length), (uint8_t *)&tmp_mask, mask_length, sizeof(tmp_mask)); - tmp_mask =3D cpu_to_be32(get_host_send_mask(ef)); + tmp_mask =3D cpu_to_be64(get_host_send_mask(ef)); copy_mask(WEM_SEND_MASK(we_mask, mask_length), (uint8_t *)&tmp_mask, mask_length, sizeof(tmp_mask)); =20 @@ -368,6 +371,21 @@ static void command_handler(SCLPEventFacility *ef, SCC= B *sccb, uint64_t code) } } =20 +static bool vmstate_event_facility_mask64_needed(void *opaque) +{ + SCLPEventFacility *ef =3D opaque; + + return (ef->receive_mask & 0xFFFFFFFF) !=3D 0; +} + +static int vmstate_event_facility_mask64_pre_load(void *opaque) +{ + SCLPEventFacility *ef =3D opaque; + + ef->receive_mask &=3D ~0xFFFFFFFFULL; + return 0; +} + static bool vmstate_event_facility_mask_length_needed(void *opaque) { SCLPEventFacility *ef =3D opaque; @@ -383,6 +401,18 @@ static int vmstate_event_facility_mask_length_pre_load= (void *opaque) return 0; } =20 +static const VMStateDescription vmstate_event_facility_mask64 =3D { + .name =3D "vmstate-event-facility/mask64", + .version_id =3D 0, + .minimum_version_id =3D 0, + .needed =3D vmstate_event_facility_mask64_needed, + .pre_load =3D vmstate_event_facility_mask64_pre_load, + .fields =3D (VMStateField[]) { + VMSTATE_UINT64(receive_mask, SCLPEventFacility), + VMSTATE_END_OF_LIST() + } +}; + static const VMStateDescription vmstate_event_facility_mask_length =3D { .name =3D "vmstate-event-facility/mask_length", .version_id =3D 0, @@ -401,10 +431,11 @@ static const VMStateDescription vmstate_event_facilit= y =3D { .version_id =3D 0, .minimum_version_id =3D 0, .fields =3D (VMStateField[]) { - VMSTATE_UINT32(receive_mask, SCLPEventFacility), + VMSTATE_UINT32(receive_mask_compat32, SCLPEventFacility), VMSTATE_END_OF_LIST() }, .subsections =3D (const VMStateDescription * []) { + &vmstate_event_facility_mask64, &vmstate_event_facility_mask_length, NULL } diff --git a/include/hw/s390x/event-facility.h b/include/hw/s390x/event-fac= ility.h index 0a8b47a..e40c85f 100644 --- a/include/hw/s390x/event-facility.h +++ b/include/hw/s390x/event-facility.h @@ -73,7 +73,7 @@ typedef struct WriteEventMask { #define WEM_RECEIVE_MASK(wem, mask_len) ((wem)->masks + 2 * (mask_len)) #define WEM_SEND_MASK(wem, mask_len) ((wem)->masks + 3 * (mask_len)) =20 -typedef uint32_t sccb_mask_t; +typedef uint64_t sccb_mask_t; =20 typedef struct EventBufferHeader { uint16_t length; --=20 2.7.4