On 01/26/2018 06:00 PM, Borislav Petkov wrote:
On Fri, Jan 26, 2018 at 05:52:15PM -0600, Gary R Hook wrote:--- a/drivers/iommu/Kconfig +++ b/drivers/iommu/Kconfig @@ -135,6 +135,15 @@ config AMD_IOMMU_V2 hardware. Select this option if you want to use devices that support the PCI PRI and PASID interface.+config AMD_IOMMU_DEBUG+ bool "Expose AMD IOMMU internals in DebugFS" + depends on AMD_IOMMU && DEBUG_FS + default n + help + With this option you can enable access to AMD IOMMU registers and + data structures through debugfs. Select this to see information + about the internal state of the device. + # Intel IOMMU support config DMAR_TABLE bool diff --git a/drivers/iommu/Makefile b/drivers/iommu/Makefile index 1fb695854809..d9e9ed5f6cfc 100644 --- a/drivers/iommu/Makefile +++ b/drivers/iommu/Makefile @@ -9,7 +9,7 @@ obj-$(CONFIG_IOMMU_IO_PGTABLE_LPAE) += io-pgtable-arm.o obj-$(CONFIG_IOMMU_IOVA) += iova.o obj-$(CONFIG_OF_IOMMU) += of_iommu.o obj-$(CONFIG_MSM_IOMMU) += msm_iommu.o -obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o amd_iommu_init.o +obj-$(CONFIG_AMD_IOMMU) += amd_iommu.o amd_iommu_init.o amd_iommu_debugfs.oThat looks like it needs to be: obj-$(CONFIG_AMD_IOMMU_DEBUG) += amd_iommu_debugfs.o
Of course. Thanks, Boris. I'll get that in v2.
