On Mon, Sep 20 2021 at 19:23, Fenghua Yu wrote:
>
> +#ifdef CONFIG_INTEL_IOMMU_SVM
> +void pasid_put(struct task_struct *tsk, struct mm_struct *mm);
> +#else
> +static inline void pasid_put(struct task_struct *tsk, struct mm_struct *mm)
> { }
> +#endif
This code is again defining that PASID is entirely restricted to
INTEL. It's true, that no other vendor supports this, but PASID is
a non-vendor specific concept.
Sticking this into INTEL code means that any other PASID implementation
has to rip it out again from INTEL code and make it a run time property.
The refcounting issue should be the same for all PASID mechanisms which
attach PASID to a mm. What's INTEL specific about that?
So can we pretty please do that correct right away?
Thanks,
tglx
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