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Fri, 3 Jul 2026 02:30:12 GMT Received: from smtprelay04.dal12v.mail.ibm.com ([172.16.1.6]) by ppma12.dal12v.mail.ibm.com (PPS) with ESMTPS id 4f2ruqpywb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 03 Jul 2026 02:30:12 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (smtpav04.dal12v.mail.ibm.com [10.241.53.103]) by smtprelay04.dal12v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 6632UBfs23790172 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 3 Jul 2026 02:30:11 GMT Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7CA2658052; Fri, 3 Jul 2026 02:30:11 +0000 (GMT) Received: from smtpav04.dal12v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 677FC5805A; Fri, 3 Jul 2026 02:30:09 +0000 (GMT) Received: from fedora-workstation.lan (unknown [9.61.151.121]) by smtpav04.dal12v.mail.ibm.com (Postfix) with ESMTP; Fri, 3 Jul 2026 02:30:09 +0000 (GMT) From: Zhuoying Cai To: qemu-s390x@nongnu.org, qemu-devel@nongnu.org Cc: jrossi@linux.ibm.com, cohuck@redhat.com, berrange@redhat.com, richard.henderson@linaro.org, david@kernel.org, walling@linux.ibm.com, jjherne@linux.ibm.com, pasic@linux.ibm.com, borntraeger@linux.ibm.com, farman@linux.ibm.com, mjrosato@linux.ibm.com, iii@linux.ibm.com, eblake@redhat.com, armbru@redhat.com, zycai@linux.ibm.com, alifm@linux.ibm.com, brueckner@linux.ibm.com, pierrick.bouvier@oss.qualcomm.com, jdaley@linux.ibm.com Subject: [PATCH v13 16/33] pc-bios/s390-ccw: Define memory for IPLB and convert IPLB to pointers Date: Thu, 2 Jul 2026 22:29:14 -0400 Message-ID: <20260703022933.1805010-17-zycai@linux.ibm.com> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260703022933.1805010-1-zycai@linux.ibm.com> References: <20260703022933.1805010-1-zycai@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAzMDAyMCBTYWx0ZWRfXw12noKB55LHG iFqfMooqcYSd5XMI3YGmCbU48MY6/JVmFla87IBUErt1NOWZvaktbfxX0eMpo6baz9OkIa8bRyq qLH20hU5QwbYyaKDZp9VbrGEgGUMObAeW8cjG5X7iHVBaWxbtgctoDCMYZmLaNGkuHdYfefTIFf W6Umw7tLKfbLUmO+14feT9R1PRWd+ecxvceSMI8NhcHbnxShJ7Y9tsadOSU/z+mgHAWEdaruEP/ fmJtKY3FTEbMZJjlfEeBqZ6inxddWIGVbe86EXMc8AOPeT3cHn0VLyHPeM9kbVqY5eRLA9+7iFA JjKops0K4NAASLcJTkCkGquTL2piwA+kvDDRk3RYvj8Yi0UdmNr8xJvPKf8PIQguMWpn+zbWJY9 oYIUdmZsVOYzOSXcH1kTLYbHr0+UAVsjG46TDbkfGLmywgUSw0zm39avgx75xRxg5HTDgB8ugBN FxqWvmLweepsM4w8PMA== X-Proofpoint-GUID: IIB9R3uyXrLsZMZhC5ikOhOlkzj_dVUl X-Authority-Analysis: v=2.4 cv=Z8bc2nRA c=1 sm=1 tr=0 ts=6a471eb5 cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=RAioF0-LDSMA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=RzCfie-kr_QcCd8fBx8p:22 a=VnNF1IyMAAAA:8 a=20KFwNOVAAAA:8 a=_GZQR2ZoBes7ElOevS0A:9 X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAzMDAyMCBTYWx0ZWRfX0O8C8cVBFfNd DCRGYi6fUHWdVvp+ggFOCseu/yBVipqd+/PHdo3vhb4tPTzjtc9jQLQORq+qTDIJiO9EJ8OQGgh ucrLGW6FY0WZf5XUdeyce7EKwgdKdjA= X-Proofpoint-ORIG-GUID: IIB9R3uyXrLsZMZhC5ikOhOlkzj_dVUl X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-07-03_01,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 adultscore=0 spamscore=0 priorityscore=1501 impostorscore=0 malwarescore=0 phishscore=0 bulkscore=0 lowpriorityscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607030020 Received-SPF: pass client-ip=148.163.158.5; envelope-from=zycai@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -26 X-Spam_score: -2.7 X-Spam_bar: -- X-Spam_report: (-2.7 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Define a memory space for both IPL Parameter Block (IPLB) and IPL Information Report Block (IIRB) since IIRB is stored immediately following IPLB. Convert IPLB to pointer and it points to the start of the defined memory space. IIRB points to the end of IPLB. Signed-off-by: Zhuoying Cai Reviewed-by: Thomas Huth Reviewed-by: Farhan Ali Reviewed-by: Jared Rossi --- include/hw/s390x/ipl/qipl.h | 6 ++++++ pc-bios/s390-ccw/iplb.h | 5 +++-- pc-bios/s390-ccw/jump2ipl.c | 6 +++--- pc-bios/s390-ccw/main.c | 34 +++++++++++++++++++--------------- pc-bios/s390-ccw/netmain.c | 8 ++++---- 5 files changed, 35 insertions(+), 24 deletions(-) diff --git a/include/hw/s390x/ipl/qipl.h b/include/hw/s390x/ipl/qipl.h index 45d25264f4..9940f1457c 100644 --- a/include/hw/s390x/ipl/qipl.h +++ b/include/hw/s390x/ipl/qipl.h @@ -208,4 +208,10 @@ struct IplInfoReportBlock { }; typedef struct IplInfoReportBlock IplInfoReportBlock; +struct IplBlocks { + IplParameterBlock iplb; + IplInfoReportBlock iirb; +}; +typedef struct IplBlocks IplBlocks; + #endif diff --git a/pc-bios/s390-ccw/iplb.h b/pc-bios/s390-ccw/iplb.h index 926e8eed5d..c92a3d0f0c 100644 --- a/pc-bios/s390-ccw/iplb.h +++ b/pc-bios/s390-ccw/iplb.h @@ -20,8 +20,9 @@ #include extern QemuIplParameters qipl; -extern IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); +extern IplParameterBlock *iplb; extern bool have_iplb; +extern IplBlocks ipl_blocks; static inline bool manage_iplb(IplParameterBlock *iplb, bool store) { @@ -61,7 +62,7 @@ static inline bool load_next_iplb(void) qipl.index++; next_iplb = (IplParameterBlock *) qipl.next_iplb; - memcpy(&iplb, next_iplb, sizeof(IplParameterBlock)); + memcpy(iplb, next_iplb, sizeof(IplParameterBlock)); qipl.chain_len--; qipl.next_iplb = qipl.next_iplb + sizeof(IplParameterBlock); diff --git a/pc-bios/s390-ccw/jump2ipl.c b/pc-bios/s390-ccw/jump2ipl.c index 86321d0f46..fa2ca5cbe1 100644 --- a/pc-bios/s390-ccw/jump2ipl.c +++ b/pc-bios/s390-ccw/jump2ipl.c @@ -43,11 +43,11 @@ int jump_to_IPL_code(uint64_t address) * The IPLB for QEMU SCSI type devices must be rebuilt during re-ipl. The * iplb.devno is set to the boot position of the target SCSI device. */ - if (iplb.pbt == S390_IPL_TYPE_QEMU_SCSI) { - iplb.devno = qipl.index; + if (iplb->pbt == S390_IPL_TYPE_QEMU_SCSI) { + iplb->devno = qipl.index; } - if (have_iplb && !set_iplb(&iplb)) { + if (have_iplb && !set_iplb(iplb)) { panic("Failed to set IPLB"); } diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index 26287cfd81..b8f836c682 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -24,7 +24,9 @@ static SubChannelId blk_schid = { .one = 1 }; static char loadparm_str[LOADPARM_LEN + 1]; QemuIplParameters qipl; -IplParameterBlock iplb __attribute__((__aligned__(PAGE_SIZE))); +/* Ensure that IPLB and IIRB are page aligned and sequential in memory */ +IplBlocks ipl_blocks __attribute__((__aligned__(PAGE_SIZE))); +IplParameterBlock *iplb; bool have_iplb; static uint16_t cutype; LowCore *lowcore; /* Yes, this *is* a pointer to address 0 */ @@ -53,7 +55,7 @@ void write_subsystem_identification(void) void write_iplb_location(void) { if (cutype == CU_TYPE_VIRTIO && virtio_get_device_type() != VIRTIO_ID_NET) { - lowcore->ptr_iplb = ptr2u32(&iplb); + lowcore->ptr_iplb = ptr2u32(iplb); } } @@ -213,14 +215,14 @@ static void boot_setup(void) char lpmsg[] = "LOADPARM=[________]\n"; VDev *vdev = virtio_get_device(); - if (have_iplb && memcmp(iplb.loadparm, NO_LOADPARM, LOADPARM_LEN) != 0) { - ebcdic_to_ascii((char *) iplb.loadparm, loadparm_str, LOADPARM_LEN); + if (have_iplb && memcmp(iplb->loadparm, NO_LOADPARM, LOADPARM_LEN) != 0) { + ebcdic_to_ascii((char *) iplb->loadparm, loadparm_str, LOADPARM_LEN); } else { sclp_get_loadparm_ascii(loadparm_str); } if (have_iplb) { - vdev->ipl_type = iplb.pbt; + vdev->ipl_type = iplb->pbt; menu_setup(vdev); } else { vdev->ipl_type = QEMU_DEFAULT_IPL; @@ -244,21 +246,21 @@ static bool find_boot_device(void) switch (vdev->ipl_type) { case S390_IPL_TYPE_CCW: vdev->scsi_device_selected = false; - debug_print_int("device no. ", iplb.ccw.devno); - blk_schid.ssid = iplb.ccw.ssid & 0x3; + debug_print_int("device no. ", iplb->ccw.devno); + blk_schid.ssid = iplb->ccw.ssid & 0x3; debug_print_int("ssid ", blk_schid.ssid); - found = find_subch(iplb.ccw.devno); + found = find_subch(iplb->ccw.devno); break; case S390_IPL_TYPE_QEMU_SCSI: vdev->scsi_device_selected = true; - vdev->selected_scsi_device.channel = iplb.scsi.channel; - vdev->selected_scsi_device.target = iplb.scsi.target; - vdev->selected_scsi_device.lun = iplb.scsi.lun; - blk_schid.ssid = iplb.scsi.ssid & 0x3; - found = find_subch(iplb.scsi.devno); + vdev->selected_scsi_device.channel = iplb->scsi.channel; + vdev->selected_scsi_device.target = iplb->scsi.target; + vdev->selected_scsi_device.lun = iplb->scsi.lun; + blk_schid.ssid = iplb->scsi.ssid & 0x3; + found = find_subch(iplb->scsi.devno); break; case S390_IPL_TYPE_PCI: - found = find_fid(iplb.pci.fid); + found = find_fid(iplb->pci.fid); break; default: puts("Unsupported IPLB"); @@ -377,10 +379,12 @@ static void probe_boot_device(void) void main(void) { + iplb = &ipl_blocks.iplb; + copy_qipl(); sclp_setup(); css_setup(); - have_iplb = store_iplb(&iplb); + have_iplb = store_iplb(iplb); if (!have_iplb) { boot_setup(); probe_boot_device(); diff --git a/pc-bios/s390-ccw/netmain.c b/pc-bios/s390-ccw/netmain.c index 651cedf6ef..9b4dfd4638 100644 --- a/pc-bios/s390-ccw/netmain.c +++ b/pc-bios/s390-ccw/netmain.c @@ -528,11 +528,11 @@ static bool virtio_setup(void) */ enable_mss_facility(); - if (have_iplb || store_iplb(&iplb)) { - IPL_assert(iplb.pbt == S390_IPL_TYPE_CCW, "IPL_TYPE_CCW expected"); - dev_no = iplb.ccw.devno; + if (have_iplb || store_iplb(iplb)) { + IPL_assert(iplb->pbt == S390_IPL_TYPE_CCW, "IPL_TYPE_CCW expected"); + dev_no = iplb->ccw.devno; debug_print_int("device no. ", dev_no); - net_schid.ssid = iplb.ccw.ssid & 0x3; + net_schid.ssid = iplb->ccw.ssid & 0x3; debug_print_int("ssid ", net_schid.ssid); found = find_net_dev(&schib, dev_no); } else { -- 2.54.0