diff options
| -rw-r--r-- | arch/x86/kernel/amd_iommu_init.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c index feee475e626..ed10c0f5ff7 100644 --- a/arch/x86/kernel/amd_iommu_init.c +++ b/arch/x86/kernel/amd_iommu_init.c @@ -252,6 +252,11 @@ static void __init iommu_enable(struct amd_iommu *iommu) iommu_feature_enable(iommu, CONTROL_IOMMU_EN); } +static void iommu_disable(struct amd_iommu *iommu) +{ + iommu_feature_disable(iommu, CONTROL_IOMMU_EN); +} + /* * mapping and unmapping functions for the IOMMU MMIO space. Each AMD IOMMU in * the system has one. @@ -945,6 +950,14 @@ static void __init enable_iommus(void) } } +static void disable_iommus(void) +{ + struct amd_iommu *iommu; + + for_each_iommu(iommu) + iommu_disable(iommu); +} + /* * Suspend/Resume support * disable suspend until real resume implemented |