Re: [PATCH v6 0/5] Add Intel IOMMU debugfs support

[Mehta, Sohil]

On Wed, 2018-01-10 at 15:46 +0200, Andy Shevchenko wrote:
> On Tue, 2018-01-09 at 19:48 -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
> > inÂ
> > that order. The information can be accessed in sysfs at
> > '/sys/kernel/debug/intel_iommu/'.
> > 
> Thanks for an update.
> I found small issues, otherwise looks pretty much good.
> 
> P.S. During re-indendation take care of the lines that can be
> combined
> to one line.
> 

Thanks Andy for the review. Will fix the issues that you pointed and
send out the updated series.

Sohil

> > 
> > Regards,
> > Sohil
> > 
> > Changes since v5:
> > Â- Change the order of includes to an alphabetical order
> > Â- Change seq_printf and seq_puts formatting
> > 
> > Changes since v4:
> > Â- Change to a SPDX license tag
> > Â- Fix seq_printf formatting and remove leading '\n's
> > 
> > Changes since v3:
> > Â- Remove an unused function parameter from some of the functions
> > Â- Fix checkpatch.pl warnings
> > Â- Remove error reporting for debugfs_create_file functions
> > Â- Fix unnecessary reprogramming of the context entries
> > Â- Simplify and merge the show context and extended context patch
> > into
> > one
> > Â- Remove redundant IOMMU null check under for_each_active_iommu
> > Â- Update the commit title to be consistent
> > 
> > Changes since v2:
> > Â- Added a macro for seq file operations based on recommendation by
> > AndyÂ
> > ÂÂÂShevchenko. The marco can be moved to seq_file.h at a future
> > point
> > Â- Changed the debugfs file names to more relevant ones
> > Â- Added information for MTRR registers in the regset file
> > 
> > Changes since v1:
> > Â- Fixed seq_printf formatting
> > Â- Handled the case when Interrupt remapping is not enabled
> > 
> > Gayatri Kammela (4):
> > Â iommu/vt-d: Add debugfs support for Intel IOMMU internals
> > Â iommu/vt-d: Add debugfs support to show context internals
> > Â iommu/vt-d: Add debugfs support to show register contents
> > Â iommu/vt-d: Add debugfs support to show Pasid table contents
> > 
> > Sohil Mehta (1):
> > Â iommu/vt-d: Add debugfs support for Interrupt remapping
> > 
> > Âdrivers/iommu/KconfigÂÂÂÂÂÂÂÂÂÂÂÂÂ|ÂÂ10 ++
> > Âdrivers/iommu/MakefileÂÂÂÂÂÂÂÂÂÂÂÂ|ÂÂÂ1 +
> > Âdrivers/iommu/intel-iommu-debug.c | 346
> > ++++++++++++++++++++++++++++++++++++++
> > Âdrivers/iommu/intel-iommu.cÂÂÂÂÂÂÂ|ÂÂ35 +---
> > Âdrivers/iommu/intel-svm.cÂÂÂÂÂÂÂÂÂ|ÂÂÂ8 -
> > Âinclude/linux/intel-iommu.hÂÂÂÂÂÂÂ|ÂÂ34 ++++
> > Âinclude/linux/intel-svm.hÂÂÂÂÂÂÂÂÂ|ÂÂ10 +-
> > Â7 files changed, 407 insertions(+), 37 deletions(-)
> > Âcreate mode 100644 drivers/iommu/intel-iommu-debug.c
> >