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x86/amd-iommu: Fix device table write order

The V bit of the device table entry has to be set after the
rest of the entry is written to not confuse the hardware.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Joerg Roedel vor 15 Jahren
Ursprung
Commit
aa879fff5d
1 geänderte Dateien mit 2 neuen und 2 gelöschten Zeilen
  1. 2 2
      arch/x86/kernel/amd_iommu.c

+ 2 - 2
arch/x86/kernel/amd_iommu.c

@@ -1087,9 +1087,9 @@ static void __attach_device(struct amd_iommu *iommu,
 	pte_root |= IOMMU_PTE_IR | IOMMU_PTE_IW | IOMMU_PTE_P | IOMMU_PTE_TV;
 
 	write_lock_irqsave(&amd_iommu_devtable_lock, flags);
-	amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
-	amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
 	amd_iommu_dev_table[devid].data[2] = domain->id;
+	amd_iommu_dev_table[devid].data[1] = upper_32_bits(pte_root);
+	amd_iommu_dev_table[devid].data[0] = lower_32_bits(pte_root);
 
 	amd_iommu_pd_table[devid] = domain;
 	write_unlock_irqrestore(&amd_iommu_devtable_lock, flags);