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authorJoerg Roedel <joerg.roedel@amd.com>2009-07-02 12:23:23 +0200
committerJoerg Roedel <joerg.roedel@amd.com>2009-07-02 12:23:23 +0200
commit7a6a3a086fe60bb3b739f66e47dc5bbc8f530d32 (patch)
tree689ae6bba73bb5bd23bc5afdcadd9eec89bf44c0 /arch/x86
parent6a047d8b9efc4b7d0c57ca4835f7e519e5c90d3f (diff)
downloadop-kernel-dev-7a6a3a086fe60bb3b739f66e47dc5bbc8f530d32.zip
op-kernel-dev-7a6a3a086fe60bb3b739f66e47dc5bbc8f530d32.tar.gz
amd-iommu: handle alias entries correctly in init code
An alias entry in the ACPI table means that the device can send requests to the IOMMU with both device ids, its own and the alias. This is not handled properly in the ACPI init code. This patch fixes the issue. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kernel/amd_iommu_init.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index 10b2acc..ec72c77 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -691,6 +691,7 @@ static void __init init_iommu_from_acpi(struct amd_iommu *iommu,
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;
@@ -749,11 +750,13 @@ static void __init init_iommu_from_acpi(struct amd_iommu *iommu,
devid = e->devid;
for (dev_i = devid_start; dev_i <= devid; ++dev_i) {
- if (alias)
+ if (alias) {
amd_iommu_alias_table[dev_i] = devid_to;
- set_dev_entry_from_acpi(iommu,
- amd_iommu_alias_table[dev_i],
- flags, ext_flags);
+ set_dev_entry_from_acpi(iommu,
+ devid_to, flags, ext_flags);
+ }
+ set_dev_entry_from_acpi(iommu, dev_i,
+ flags, ext_flags);
}
break;
default:
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