On Tue, 2017-12-19 at 13:08 -0800, Sohil Mehta wrote: > Hi All, > > This series aims to add debugfs support for Intel IOMMU. It exposes > IOMMU > registers, internal context and dumps individual table entries to help > debug > Intel IOMMUs. > > The first patch does the ground work for the following patches by > creating a > new Kconfig option - INTEL_IOMMU_DEBUG. It also reorganizes some Intel > IOMMU > data structures. The next four patches add debugfs support for IOMMU > context > internals, register contents, PASID internals, and Interrupt remapping > in > that order. The information can be accessed in sysfs at > '/sys/kernel/debug/intel_iommu/'.
Perhaps you need to switch to SPDX license pointer. I dunno if Thomas' patch with documentation how to do this made upstream / linux-next yet. > > Regards, > Sohil > > Changes since v3: > - Remove an unused function parameter from some of the functions > - Fix checkpatch.pl warnings > - Remove error reporting for debugfs_create_file functions > - Fix unnecessary reprogramming of the context entries > - Simplify and merge the show context and extended context patch into > one > - Remove redundant IOMMU null check under for_each_active_iommu > - Update the commit title to be consistent > > Changes since v2: > - Added a macro for seq file operations based on recommendation by > Andy > Shevchenko. The marco can be moved to seq_file.h at a future point > - Changed the debugfs file names to more relevant ones > - Added information for MTRR registers in the regset file > > Changes since v1: > - Fixed seq_printf formatting > - Handled the case when Interrupt remapping is not enabled > > Gayatri Kammela (4): > iommu/vt-d: Add debugfs support for Intel IOMMU internals > iommu/vt-d: Add debugfs support to show context internals > iommu/vt-d: Add debugfs support to show register contents > iommu/vt-d: Add debugfs support to show Pasid table contents > > Sohil Mehta (1): > iommu/vt-d: Add debugfs support for Interrupt remapping > > drivers/iommu/Kconfig | 10 ++ > drivers/iommu/Makefile | 1 + > drivers/iommu/intel-iommu-debug.c | 355 > ++++++++++++++++++++++++++++++++++++++ > drivers/iommu/intel-iommu.c | 35 +--- > drivers/iommu/intel-svm.c | 8 - > include/linux/intel-iommu.h | 34 ++++ > include/linux/intel-svm.h | 10 +- > 7 files changed, 416 insertions(+), 37 deletions(-) > create mode 100644 drivers/iommu/intel-iommu-debug.c > -- Andy Shevchenko <andriy.shevche...@linux.intel.com> Intel Finland Oy
