On Fri, Jun 12, 2020 at 05:41:29PM -0700, Fenghua Yu wrote:
> diff --git a/include/linux/mm_types.h b/include/linux/mm_types.h
> index 64ede5f150dc..5778db3aa42d 100644
> --- a/include/linux/mm_types.h
> +++ b/include/linux/mm_types.h
> @@ -538,6 +538,10 @@ struct mm_struct {
> atomic_long_t hugetlb_usage;
> #endif
> struct work_struct async_put_work;
> +
> +#ifdef CONFIG_PCI_PASID
Non-PCI devices can also use a PASID (e.g. Arm's SubstreamID). How about
CONFIG_IOMMU_SUPPORT?
Thanks,
Jean
> + unsigned int pasid;
> +#endif
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