>+int intel_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr) >+{ >+ return !dma_addr; >+} The implementation of inte_dma_mapping_error is incomplete. Dma_addr is valid only when it belongs to hwdev's domain. This is all about VT-d isolation fundamental. +int intel_dma_mapping_error(struct device *hwdev, dma_addr_t dma_addr) +{ + struct pci_dev *pdev = to_pci_dev(hwdev); + struct dmar_domain *domain; + struct iova *iova; + + domain = find_domain(pdev); + + iova = find_iova(&domain->iovad, IOVA_PFN(dma_addr)); + if (!iova) + return -EINVAL; + return 0; +} -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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