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-rw-r--r--arch/x86/kernel/amd_iommu.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 33434c497a6a..04ff5ec4ac0e 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -824,6 +824,11 @@ static void dma_ops_free_addresses(struct dma_ops_domain *dom,
BUG_ON(i >= APERTURE_MAX_RANGES || range == NULL);
+#ifdef CONFIG_IOMMU_STRESS
+ if (i < 4)
+ return;
+#endif
+
if (address >= dom->next_address)
dom->need_flush = true;