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Commit 09284b9c authored by Baoquan He's avatar Baoquan He Committed by Joerg Roedel
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iommu/amd: No need to wait iommu completion if no dte irq entry change 



This is a clean up. In get_irq_table() only if DTE entry is changed
iommu_completion_wait() need be called. Otherwise no need to do it.

Signed-off-by: default avatarBaoquan He <bhe@redhat.com>
Signed-off-by: default avatarJoerg Roedel <jroedel@suse.de>
parent c3db901c

drivers/iommu/amd_iommu.c

+3 −3
Original line number Diff line number Diff line
@@ -3634,7 +3634,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) 


	table = irq_lookup_table[devid];

	if (table)

		goto out;

		goto out_unlock;



	alias = amd_iommu_alias_table[devid];

	table = irq_lookup_table[alias];
@@ -3648,7 +3648,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) 
	/* Nothing there yet, allocate new irq remapping table */

	table = kzalloc(sizeof(*table), GFP_ATOMIC);

	if (!table)

		goto out;

		goto out_unlock;



	/* Initialize table spin-lock */

	spin_lock_init(&table->lock);
@@ -3661,7 +3661,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) 
	if (!table->table) {

		kfree(table);

		table = NULL;

		goto out;

		goto out_unlock;

	}



	if (!AMD_IOMMU_GUEST_IR_GA(amd_iommu_guest_ir))