Messages in this thread | | | Subject | Re: [PATCH v2 17/19] iommu: Add max num of cache and granu types | From | Auger Eric <> | Date | Fri, 26 Apr 2019 18:22:46 +0200 |
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Hi Jacob,
On 4/24/19 1:31 AM, Jacob Pan wrote: > To convert to/from cache types and granularities between generic and > VT-d specific counterparts, a 2D arrary is used. Introduce the limits array > to help define the converstion array size. conversion > > Signed-off-by: Jacob Pan <jacob.jun.pan@linux.intel.com> > --- > include/uapi/linux/iommu.h | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h > index 5c95905..2d8fac8 100644 > --- a/include/uapi/linux/iommu.h > +++ b/include/uapi/linux/iommu.h > @@ -197,6 +197,7 @@ struct iommu_inv_addr_info { > __u64 granule_size; > __u64 nb_granules; > }; > +#define NR_IOMMU_CACHE_INVAL_GRANU (3) > > /** > * First level/stage invalidation information > @@ -235,6 +236,7 @@ struct iommu_cache_invalidate_info { > struct iommu_inv_addr_info addr_info; > }; > }; > +#define NR_IOMMU_CACHE_TYPE (3) > /** > * struct gpasid_bind_data - Information about device and guest PASID binding > * @gcr3: Guest CR3 value from guest mm > Is it really something that needs to be exposed in the uapi?
Thanks
Eric
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