Re: [PATCH v2 3/3] iommu/io-pgtable-arm-selftests: Use KUnit

[Mostafa Saleh]

On Wed, Sep 17, 2025 at 04:44:54PM -0300, Jason Gunthorpe wrote:
> On Wed, Sep 17, 2025 at 07:11:40PM +0000, Mostafa Saleh wrote:
> > Integrate the selftests as part of kunit, this makes the test
> > available through debugfs.
> > 
> > Suggested-by: Jason Gunthorpe <jgg@xxxxxxxx>
> > Signed-off-by: Mostafa Saleh <smostafa@xxxxxxxxxx>
> > ---
> >  drivers/iommu/Kconfig                    |  2 +-
> >  drivers/iommu/io-pgtable-arm-selftests.c | 93 +++++++++++++-----------
> >  2 files changed, 51 insertions(+), 44 deletions(-)
> > 
> > diff --git a/drivers/iommu/Kconfig b/drivers/iommu/Kconfig
> > index 553522ef3ca9..f7e6d1db6ce6 100644
> > --- a/drivers/iommu/Kconfig
> > +++ b/drivers/iommu/Kconfig
> > @@ -42,7 +42,7 @@ config IOMMU_IO_PGTABLE_LPAE
> >  
> >  config IOMMU_IO_PGTABLE_LPAE_SELFTEST
> 
> This should probably be renamed to xxx_KUNIT_TEST

Will do.

> 
> >  	tristate "LPAE selftests"
> > -	depends on IOMMU_IO_PGTABLE_LPAE
> > +	depends on IOMMU_IO_PGTABLE_LPAE && KUNIT
> 
> I wonder if it should be:
> 
>   	select IOMMU_IO_PGTABLE_LPAE
>   	depends on KUNIT
>         default KUNIT_ALL_TESTS
> 
> ?
> 
> At least the default should be there

Makes sense, will do.

> 
> >  	help
> >  	  Enable self-tests for LPAE page table allocator. This performs
> >  	  a series of page-table consistency checks during boot.
> 
> "kunit tests" here as well

Will do.

> 
> > -subsys_initcall(arm_lpae_do_selftests);
> 
> Oh so it does drop the initcall, the coverletter is a bit confusing then.

Yes, I will reword the cover letter.

Thanks,
Mostafa

> 
> Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
> 
> Jason