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| author |   Robin Murphy <robin.murphy@arm.com> | 2021-08-11 13:21:36 +0100 |
|---|---|---|
| committer |   Joerg Roedel <jroedel@suse.de> | 2021-08-18 13:27:49 +0200 |
| commit | 7cf8a638678c89e9ff62520c5f90c4919b3b2af7 (patch) | |
| tree | 990e11084a8fd278e8c23483f11dc7c8fb169b73 /drivers/iommu | |
| parent | iommu: Expose DMA domain strictness via sysfs (diff) | |
| download | linux-dev-7cf8a638678c89e9ff62520c5f90c4919b3b2af7.tar.xz linux-dev-7cf8a638678c89e9ff62520c5f90c4919b3b2af7.zip | |
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 <john.garry@huawei.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Link: https://lore.kernel.org/r/9d2bcba880c6d517d0751ed8bd4960853030b4d7.1628682049.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/iommu.c | 9 |
1 files 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; } |