On Tue, Apr 11, 2017 at 9:13 PM, Robin Murphy <robin.mur...@arm.com> wrote: > On 11/04/17 15:42, linucher...@gmail.com wrote: >> From: Linu Cherian <linu.cher...@cavium.com> >> >> With implementations supporting only page 0 of register space, >> resource size can be 64k as well and hence perform size checks >> based on smmu option PAGE0_REGS_ONLY. > > What harm comes of mapping page 1 if we don't access it? > > Robin. >
There are multiple SMMUs on the silicon and CSRs of each SMMU are 64K apart. Hence can't map page-1 even though it's not accessed. Thanks, Sunil. _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
