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Fri, 27 Sep 2024 00:51:37 GMT Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 4298D58056; Fri, 27 Sep 2024 00:51:37 +0000 (GMT) Received: from smtpav05.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id C25535805D; Fri, 27 Sep 2024 00:51:36 +0000 (GMT) Received: from localhost.localdomain (unknown [9.61.154.26]) by smtpav05.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 27 Sep 2024 00:51:36 +0000 (GMT) From: jrossi@linux.ibm.com To: qemu-devel@nongnu.org, qemu-s390x@nongnu.org, thuth@redhat.com Cc: frankja@linux.ibm.com, jrossi@linux.ibm.com Subject: [PATCH 11/18] pc-bios/s390-ccw: Remove panics from Netboot IPL path Date: Thu, 26 Sep 2024 20:51:10 -0400 Message-ID: <20240927005117.1679506-12-jrossi@linux.ibm.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: <20240927005117.1679506-1-jrossi@linux.ibm.com> References: <20240927005117.1679506-1-jrossi@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: hdcAqKp4BmLA9Wjer8bZf1O5kbX3W4Nd X-Proofpoint-GUID: SSjwmRVs2HoYCD0r06TbT25XXC6xFqyC X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1051,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-26_06,2024-09-26_01,2024-09-02_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 impostorscore=0 adultscore=0 malwarescore=0 suspectscore=0 bulkscore=0 spamscore=0 mlxscore=0 lowpriorityscore=0 phishscore=0 clxscore=1015 mlxlogscore=999 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2408220000 definitions=main-2409270002 Received-SPF: pass client-ip=148.163.158.5; envelope-from=jrossi@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, RCVD_IN_VALIDITY_SAFE_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Jared Rossi Remove panic-on-error from Netboot specific functions so that error recovery may be possible in the future. Functions that would previously panic now provide a return code. Signed-off-by: Jared Rossi --- pc-bios/s390-ccw/s390-ccw.h | 2 +- pc-bios/s390-ccw/bootmap.c | 1 + pc-bios/s390-ccw/netmain.c | 22 +++++++++++++++------- pc-bios/s390-ccw/virtio-net.c | 7 +++++-- 4 files changed, 22 insertions(+), 10 deletions(-) diff --git a/pc-bios/s390-ccw/s390-ccw.h b/pc-bios/s390-ccw/s390-ccw.h index cbd92f3671..8dac070257 100644 --- a/pc-bios/s390-ccw/s390-ccw.h +++ b/pc-bios/s390-ccw/s390-ccw.h @@ -57,7 +57,7 @@ unsigned int get_loadparm_index(void); void main(void); /* netmain.c */ -void netmain(void); +int netmain(void); /* sclp.c */ void sclp_print(const char *string); diff --git a/pc-bios/s390-ccw/bootmap.c b/pc-bios/s390-ccw/bootmap.c index dc7200c264..9459e19ffb 100644 --- a/pc-bios/s390-ccw/bootmap.c +++ b/pc-bios/s390-ccw/bootmap.c @@ -1059,6 +1059,7 @@ void zipl_load(void) if (virtio_get_device_type() == VIRTIO_ID_NET) { netmain(); + panic("\n! Cannot IPL from this network !\n"); } if (ipl_scsi()) { diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index bc6ad8695f..013f94d932 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -464,7 +464,7 @@ static bool find_net_dev(Schib *schib, int dev_no) return false; } -static void virtio_setup(void) +static int virtio_setup(void) { Schib schib; int ssid; @@ -479,7 +479,10 @@ static void virtio_setup(void) enable_mss_facility(); if (store_iplb(&iplb)) { - IPL_assert(iplb.pbt == S390_IPL_TYPE_CCW, "IPL_TYPE_CCW expected"); + if (iplb.pbt != S390_IPL_TYPE_CCW) { + puts("IPL_TYPE_CCW expected"); + } + dev_no = iplb.ccw.devno; debug_print_int("device no. ", dev_no); net_schid.ssid = iplb.ccw.ssid & 0x3; @@ -495,10 +498,10 @@ static void virtio_setup(void) } } - IPL_assert(found, "No virtio net device found"); + return found; } -void netmain(void) +int netmain(void) { filename_ip_t fn_ip; int rc, fnlen; @@ -506,11 +509,15 @@ void netmain(void) sclp_setup(); puts("Network boot starting..."); - virtio_setup(); + if (!virtio_setup()) { + puts("No virtio net device found."); + return 1; + } rc = net_init(&fn_ip); if (rc) { - panic("Network initialization failed. Halting."); + puts("Network initialization failed."); + return 1; } fnlen = strlen(fn_ip.filename); @@ -528,5 +535,6 @@ void netmain(void) jump_to_low_kernel(); } - panic("Failed to load OS from network."); + puts("Failed to load OS from network."); + return 1; } diff --git a/pc-bios/s390-ccw/virtio-net.c b/pc-bios/s390-ccw/virtio-net.c index 2fcb0a58c5..f9854a22c3 100644 --- a/pc-bios/s390-ccw/virtio-net.c +++ b/pc-bios/s390-ccw/virtio-net.c @@ -54,8 +54,11 @@ int virtio_net_init(void *mac_addr) vdev->guest_features[0] = VIRTIO_NET_F_MAC_BIT; virtio_setup_ccw(vdev); - IPL_assert(vdev->guest_features[0] & VIRTIO_NET_F_MAC_BIT, - "virtio-net device does not support the MAC address feature"); + if (!(vdev->guest_features[0] & VIRTIO_NET_F_MAC_BIT)) { + puts("virtio-net device does not support the MAC address feature"); + return -1; + } + memcpy(mac_addr, vdev->config.net.mac, ETH_ALEN); for (i = 0; i < 64; i++) {