Extern or forward variable declaration at include/linux/amd-iommu.h, line 30 References: drivers/gpu/drm/amd/amdkfd/kfd_iommu.c, line 146 drivers/gpu/drm/amd/amdkfd/kfd_iommu.c, line 192 drivers/iommu/amd/init.c, line 1717 drivers/iommu/amd/init.c, line 1907 drivers/iommu/amd/init.c, line 2364 drivers/iommu/amd/iommu_v2.c, line 56 drivers/iommu/amd/iommu_v2.c, line 87 drivers/iommu/amd/iommu_v2.c, line 519 drivers/iommu/amd/iommu_v2.c, line 598 drivers/iommu/amd/iommu_v2.c, line 683 drivers/iommu/amd/iommu_v2.c, line 731 drivers/iommu/amd/iommu_v2.c, line 829 drivers/iommu/amd/iommu_v2.c, line 865 drivers/iommu/amd/iommu_v2.c, line 896 include/linux/amd-iommu.h, line 32 include/linux/amd-iommu.h, line 46 include/linux/amd-iommu.h, line 53 include/linux/amd-iommu.h, line 63 include/linux/amd-iommu.h, line 75 include/linux/amd-iommu.h, line 100 include/linux/amd-iommu.h, line 105 include/linux/amd-iommu.h, line 138 include/linux/amd-iommu.h, line 153 include/linux/amd-iommu.h, line 155