diff options
| -rw-r--r-- | drivers/pci/intel-iommu.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index beb5ccfd89b..d36fa80aaa5 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -1974,6 +1974,17 @@ static int iommu_prepare_identity_map(struct pci_dev *pdev, printk(KERN_INFO "IOMMU: Setting identity map for device %s [0x%Lx - 0x%Lx]\n", pci_name(pdev), start, end); + + if (end >> agaw_to_width(domain->agaw)) { + WARN(1, "Your BIOS is broken; RMRR exceeds permitted address width (%d bits)\n" + "BIOS vendor: %s; Ver: %s; Product Version: %s\n", + agaw_to_width(domain->agaw), + dmi_get_system_info(DMI_BIOS_VENDOR), + dmi_get_system_info(DMI_BIOS_VERSION), + dmi_get_system_info(DMI_PRODUCT_VERSION)); + ret = -EIO; + goto error; + } ret = iommu_domain_identity_map(domain, start, end); if (ret) |