Hi Nate, On Mon, Dec 19, 2016 at 03:26:40PM -0500, Nate Watterson wrote: > Currently, all l2 stream tables are being allocated with space for > (1<<split) stes without regard to the number of sid bits the smmu > physically supports. To avoid allocating memory for inaccessible > stes, this patch limits the span of an l2 table to be no larger > than the sid size of the smmu to which it belongs. > > Signed-off-by: Nate Watterson <nwatt...@codeaurora.org> > --- > drivers/iommu/arm-smmu-v3.c | 10 +++++++--- > 1 file changed, 7 insertions(+), 3 deletions(-)
I can't help but think you'd be better off using a linear stream table in this scenario. If we hack the feature check for ARM_SMMU_FEAT_2_LVL_STRTAB so that it doesn't report support for 2 level tables if the number of sids is less than that covered by a single l2 entry, would that solve your problem? Will _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
