In nested mode, we call the set_pasid_table() callback on each STE update to pass the guest stage 1 configuration to the host and apply it at physical level.
In the case of live migration, we need to manual call the set_pasid_table() to load the guest stage 1 configurations to the host. If this operation is fail, the migration is fail. Signed-off-by: Kunkun Jiang <jiangkun...@huawei.com> --- hw/arm/smmuv3.c | 62 +++++++++++++++++++++++++++++++++++++++++++++ hw/arm/trace-events | 1 + 2 files changed, 63 insertions(+) diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c index 55aa6ad874..4d28ca3777 100644 --- a/hw/arm/smmuv3.c +++ b/hw/arm/smmuv3.c @@ -1534,6 +1534,67 @@ static void smmu_realize(DeviceState *d, Error **errp) smmu_init_irq(s, dev); } +static int smmuv3_manual_set_pci_device_pasid_table(SMMUDevice *sdev) +{ +#ifdef __linux__ + IOMMUMemoryRegion *mr = &(sdev->iommu); + int sid = smmu_get_sid(sdev); + SMMUEventInfo event = {.type = SMMU_EVT_NONE, .sid = sid, + .inval_ste_allowed = true}; + IOMMUConfig iommu_config = {}; + SMMUTransCfg *cfg; + int ret = -1; + + cfg = smmuv3_get_config(sdev, &event); + if (!cfg) { + return ret; + } + + iommu_config.pasid_cfg.argsz = sizeof(struct iommu_pasid_table_config); + iommu_config.pasid_cfg.version = PASID_TABLE_CFG_VERSION_1; + iommu_config.pasid_cfg.format = IOMMU_PASID_FORMAT_SMMUV3; + iommu_config.pasid_cfg.base_ptr = cfg->s1ctxptr; + iommu_config.pasid_cfg.pasid_bits = cfg->s1cdmax; + iommu_config.pasid_cfg.vendor_data.smmuv3.version = PASID_TABLE_SMMUV3_CFG_VERSION_1; + iommu_config.pasid_cfg.vendor_data.smmuv3.s1fmt = cfg->s1fmt; + iommu_config.pasid_cfg.vendor_data.smmuv3.s1dss = cfg->s1dss; + + if (cfg->disabled || cfg->bypassed) { + iommu_config.pasid_cfg.config = IOMMU_PASID_CONFIG_BYPASS; + } else if (cfg->aborted) { + iommu_config.pasid_cfg.config = IOMMU_PASID_CONFIG_ABORT; + } else { + iommu_config.pasid_cfg.config = IOMMU_PASID_CONFIG_TRANSLATE; + } + + ret = pci_device_set_pasid_table(sdev->bus, sdev->devfn, &iommu_config); + if (ret) { + error_report("Failed to pass PASID table to host for iommu mr %s (%m)", + mr->parent_obj.name); + } + + return ret; +#endif +} + +static int smmuv3_post_load(void *opaque, int version_id) +{ + SMMUv3State *s3 = opaque; + SMMUState *s = &(s3->smmu_state); + SMMUDevice *sdev; + int ret = 0; + + QLIST_FOREACH(sdev, &s->devices_with_notifiers, next) { + trace_smmuv3_post_load_sdev(sdev->devfn, sdev->iommu.parent_obj.name); + ret = smmuv3_manual_set_pci_device_pasid_table(sdev); + if (ret) { + break; + } + } + + return ret; +} + static const VMStateDescription vmstate_smmuv3_queue = { .name = "smmuv3_queue", .version_id = 1, @@ -1552,6 +1613,7 @@ static const VMStateDescription vmstate_smmuv3 = { .version_id = 1, .minimum_version_id = 1, .priority = MIG_PRI_IOMMU, + .post_load = smmuv3_post_load, .fields = (VMStateField[]) { VMSTATE_UINT32(features, SMMUv3State), VMSTATE_UINT8(sid_size, SMMUv3State), diff --git a/hw/arm/trace-events b/hw/arm/trace-events index b0b0030d24..2f093286ec 100644 --- a/hw/arm/trace-events +++ b/hw/arm/trace-events @@ -54,4 +54,5 @@ smmuv3_notify_flag_add(const char *iommu) "ADD SMMUNotifier node for iommu mr=%s smmuv3_notify_flag_del(const char *iommu) "DEL SMMUNotifier node for iommu mr=%s" smmuv3_inv_notifiers_iova(const char *name, uint16_t asid, uint64_t iova, uint8_t tg, uint64_t num_pages) "iommu mr=%s asid=%d iova=0x%"PRIx64" tg=%d num_pages=0x%"PRIx64 smmuv3_notify_config_change(const char *name, uint8_t config, uint64_t s1ctxptr) "iommu mr=%s config=%d s1ctxptr=0x%"PRIx64 +smmuv3_post_load_sdev(int devfn, const char *name) "sdev devfn=%d iommu mr=%s"PRIx64 -- 2.23.0