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envelope-from=farman@linux.ibm.com; helo=mx0a-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_H4=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 From: Zhuoying Cai The current approach to enable secure boot relies on providing secure-boot and boot-certs parameters of s390-ccw-virtio machine type option, which apply to all boot devices. With the possibility of multiple boot devices, secure boot expects all provided devices to be supported and eligible (e.g., virtio-blk/virtio-scsi using the SCSI scheme). If multiple boot devices are provided and include an unsupported (e.g., ECKD, VFIO) or a non-eligible (e.g., Net) device, the boot process will terminate with an error logged to the console. Signed-off-by: Zhuoying Cai Reviewed-by: Thomas Huth Reviewed-by: Matthew Rosato Link: https://lore.kernel.org/qemu-devel/20260730214624.2328883-31-zycai@linux.ibm.com Signed-off-by: Eric Farman --- hw/s390x/ipl.c | 40 ++++++++++++++++++++++++++++++++++++++-- pc-bios/s390-ccw/main.c | 3 --- 2 files changed, 38 insertions(+), 5 deletions(-) diff --git a/hw/s390x/ipl.c b/hw/s390x/ipl.c index 35bdfe03d8..d59ed36c78 100644 --- a/hw/s390x/ipl.c +++ b/hw/s390x/ipl.c @@ -504,6 +504,37 @@ static void s390_set_secure_boot_flags(IplParameterBlock *iplb, iplb->len = cpu_to_be32(S390_IPLB_MAX_LEN); } +static bool s390_validate_secure_boot_device(int devtype, Error **errp) +{ + switch (devtype) { + case CCW_DEVTYPE_VFIO: + error_setg(errp, "Passthrough (vfio) CCW device does not support secure boot!"); + return false; + case CCW_DEVTYPE_VIRTIO_NET: + error_setg(errp, "Virtio net boot device does not support secure boot!"); + return false; + default: + return true; + } +} + +static void s390_apply_secure_boot(IplParameterBlock *iplb, int devtype, + bool secure_boot, bool audit_mode) +{ + Error *local_error = NULL; + + if (!secure_boot && !audit_mode) { + return; + } + + if (!s390_validate_secure_boot_device(devtype, &local_error)) { + error_report_err(local_error); + exit(1); + } + + s390_set_secure_boot_flags(iplb, secure_boot, audit_mode); +} + static bool s390_build_iplb(DeviceState *dev_st, IplParameterBlock *iplb) { CcwDevice *ccw_dev = NULL; @@ -560,14 +591,19 @@ static bool s390_build_iplb(DeviceState *dev_st, IplParameterBlock *iplb) s390_ipl_convert_loadparm((char *)lp, iplb->loadparm); iplb->flags |= DIAG308_FLAGS_LP_VALID; - s390_set_secure_boot_flags(iplb, s390_secure_boot_enabled(), - s390_has_certificate()); + s390_apply_secure_boot(iplb, devtype, s390_secure_boot_enabled(), + s390_has_certificate()); return true; } pbdev = s390_get_pci_device(dev_st, &devtype); if (pbdev) { + if (s390_secure_boot_enabled() || s390_has_certificate()) { + error_report("Virtio pci boot device does not support secure boot!"); + exit(1); + } + pci_lp = object_property_get_str(OBJECT(pbdev->pdev), "loadparm", NULL); if (pci_lp && strlen(pci_lp) > 0) { lp = pci_lp; diff --git a/pc-bios/s390-ccw/main.c b/pc-bios/s390-ccw/main.c index c5c093534c..8fc1cbf653 100644 --- a/pc-bios/s390-ccw/main.c +++ b/pc-bios/s390-ccw/main.c @@ -308,9 +308,6 @@ static void ipl_ccw_device(void) switch (cutype) { case CU_TYPE_DASD_3990: case CU_TYPE_DASD_2107: - IPL_assert((boot_mode == ZIPL_BOOT_MODE_NORMAL), - "Passthrough (vfio) CCW device does not support secure boot!"); - dasd_ipl(blk_schid, cutype); break; case CU_TYPE_VIRTIO: -- 2.55.0