Re: [RFC PATCH 08/33] vfio: selftests: Validate 2M/1G HugeTLB are mapped as 2M/1G in IOMMU

On Fri, May 30, 2025 at 02:12:36PM -0700, David Matlack wrote:

On Fri, May 23, 2025 at 4:30 PM David Matlack dmatlack@google.com wrote:

...

...

•   if (access("/sys/kernel/debug/iommu/intel", F_OK))
  

•           return intel_iommu_mapping_get(bdf, iova, mapping);
  

Oops, this should be !access(...).

Hmm... Generally speaking that code is a hack. Is there any guarantee that debugfs mount point is fixed to /sys/kernel/debug ?

...

•   return -EOPNOTSUPP;