diff options
Diffstat (limited to 'drivers/iommu/intel/iommu.c')
| -rw-r--r-- | drivers/iommu/intel/iommu.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/iommu/intel/iommu.c b/drivers/iommu/intel/iommu.c index acb91ddf32d0..8c9a9ed7dc09 100644 --- a/drivers/iommu/intel/iommu.c +++ b/drivers/iommu/intel/iommu.c @@ -432,8 +432,11 @@ static int __init intel_iommu_setup(char *str) pr_info("Disable supported super page\n"); intel_iommu_superpage = 0; } else if (!strncmp(str, "sm_on", 5)) { - pr_info("Intel-IOMMU: scalable mode supported\n"); + pr_info("Enable scalable mode if hardware supports\n"); intel_iommu_sm = 1; + } else if (!strncmp(str, "sm_off", 6)) { + pr_info("Scalable mode is disallowed\n"); + intel_iommu_sm = 0; } else if (!strncmp(str, "tboot_noforce", 13)) { pr_info("Intel-IOMMU: not forcing on after tboot. This could expose security risk for tboot\n"); intel_iommu_tboot_noforce = 1; |