[PATCH] iommu/arm-smmu-v3: Fix size calculation in arm_smmu_mm_invalidate_range()

Nicolin Chen nicolinc at nvidia.com
Tue Apr 19 16:36:47 PDT 2022


On Tue, Apr 19, 2022 at 08:10:34PM -0300, Jason Gunthorpe wrote:

> > -     size_t size = end - start + 1;
> > +     size_t size;
> > +
> > +     /*
> > +      * The mm_types defines vm_end as the first byte after the end address,
> > +      * different from IOMMU subsystem using the last address of an address
> > +      * range. So do a simple translation here by calculating size correctly.
> > +      */
> > +     size = end - start;
> 
> I would skip the comment though

It's a bit of highlight here to help us remember in the future,
per Robin's comments at my previous patch.

Thanks!
Nic



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