From 7cf8a638678c89e9ff62520c5f90c4919b3b2af7 Mon Sep 17 00:00:00 2001 From: Robin Murphy Date: Wed, 11 Aug 2021 13:21:36 +0100 Subject: [PATCH] iommu: Only log strictness for DMA domains When passthrough is enabled, the default strictness policy becomes irrelevant, since any subsequent runtime override to a DMA domain type now embodies an explicit choice of strictness as well. Save on noise by only logging the default policy when it is meaningfully in effect. Reviewed-by: John Garry Reviewed-by: Lu Baolu Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/9d2bcba880c6d517d0751ed8bd4960853030b4d7.1628682049.git.robin.murphy@arm.com Signed-off-by: Joerg Roedel --- drivers/iommu/iommu.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index f653a70389ef..069f7dcc1de0 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -144,10 +144,11 @@ static int __init iommu_subsys_init(void) (iommu_cmd_line & IOMMU_CMD_LINE_DMA_API) ? "(set via kernel command line)" : ""); - pr_info("DMA domain TLB invalidation policy: %s mode %s\n", - iommu_dma_strict ? "strict" : "lazy", - (iommu_cmd_line & IOMMU_CMD_LINE_STRICT) ? - "(set via kernel command line)" : ""); + if (!iommu_default_passthrough()) + pr_info("DMA domain TLB invalidation policy: %s mode %s\n", + iommu_dma_strict ? "strict" : "lazy", + (iommu_cmd_line & IOMMU_CMD_LINE_STRICT) ? + "(set via kernel command line)" : ""); return 0; }