Jean-Philippe Brucker
2021-Mar-03 17:18 UTC
[PATCH RFC v1 08/15] iommu: Add asid_bits to arm smmu-v3 stage1 table info
On Fri, Jan 15, 2021 at 05:43:35PM +0530, Vivek Gautam wrote:> aisd_bits data is required to prepare stage-1 tables for arm-smmu-v3. > > Signed-off-by: Vivek Gautam <vivek.gautam at arm.com> > Cc: Joerg Roedel <joro at 8bytes.org> > Cc: Will Deacon <will.deacon at arm.com> > Cc: Robin Murphy <robin.murphy at arm.com> > Cc: Jean-Philippe Brucker <jean-philippe at linaro.org> > Cc: Eric Auger <eric.auger at redhat.com> > Cc: Alex Williamson <alex.williamson at redhat.com> > Cc: Kevin Tian <kevin.tian at intel.com> > Cc: Jacob Pan <jacob.jun.pan at linux.intel.com> > Cc: Liu Yi L <yi.l.liu at intel.com> > Cc: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com> > Cc: Shameerali Kolothum Thodi <shameerali.kolothum.thodi at huawei.com> > --- > include/uapi/linux/iommu.h | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/include/uapi/linux/iommu.h b/include/uapi/linux/iommu.h > index 082d758dd016..96abbfc7c643 100644 > --- a/include/uapi/linux/iommu.h > +++ b/include/uapi/linux/iommu.h > @@ -357,7 +357,7 @@ struct iommu_pasid_smmuv3 { > __u32 version; > __u8 s1fmt; > __u8 s1dss; > - __u8 padding[2]; > + __u16 asid_bits;Is this used anywhere? This struct is passed from host userspace to host kernel to attach the PASID table, so I don't think it needs an asid_bits field. Thanks, Jean