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/linux-6.12.1/drivers/iommu/intel/
Diommu.c554 u32 vtbar; in quirk_ioat_snb_local_iommu() local
562 rc = pci_bus_read_config_dword(pdev->bus, PCI_DEVFN(0, 0), 0xb0, &vtbar); in quirk_ioat_snb_local_iommu()
568 vtbar &= 0xffff0000; in quirk_ioat_snb_local_iommu()
572 if (!drhd || drhd->reg_base_addr - vtbar != 0xa000) { in quirk_ioat_snb_local_iommu()