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Commit 7455aab1 authored by Neil Turton's avatar Neil Turton Committed by Joerg Roedel
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amd-iommu: fix the handling of device aliases in the AMD IOMMU driver. 



The devid parameter to set_dev_entry_from_acpi is the requester ID
rather than the device ID since it is used to index the IOMMU device
table.  The handling of IVHD_DEV_ALIAS used to pass the device ID.
This patch fixes it to pass the requester ID.

[ Impact: fix setting the wrong req-id in acpi-table parsing ]

Signed-off-by: default avatarNeil Turton <nturton@solarflare.com>
Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 421f909c

arch/x86/kernel/amd_iommu_init.c

+1 −1
Original line number Diff line number Diff line
@@ -618,7 +618,7 @@ static void __init init_iommu_from_acpi(struct amd_iommu *iommu, 
		case IVHD_DEV_ALIAS:

			devid = e->devid;

			devid_to = e->ext >> 8;

			set_dev_entry_from_acpi(iommu, devid, e->flags, 0);

			set_dev_entry_from_acpi(iommu, devid_to, e->flags, 0);

			amd_iommu_alias_table[devid] = devid_to;

			break;

		case IVHD_DEV_ALIAS_RANGE: