[PATCH v2 0/5] add non-strict mode support for arm-smmu-v3

From: Zhen Lei
Date: Sun Jun 10 2018 - 07:09:23 EST

v1 -> v2:
Use the lowest bit of the io_pgtable_ops.unmap's iova parameter to pass the strict mode:
Treat 0 as IOMMU_STRICT, so that the unmap operation can compatible with
other IOMMUs which still use strict mode. In other words, this patch series
will not impact other IOMMU drivers. I tried add a new quirk IO_PGTABLE_QUIRK_NON_STRICT
in io_pgtable_cfg.quirks, but it can not pass the strict mode of the domain from SMMUv3
driver to io-pgtable module.

Add a new member domain_non_strict in struct iommu_dma_cookie, this member will only be
initialized when the related domain and IOMMU driver support non-strict mode.

Zhen Lei (5):
iommu/arm-smmu-v3: fix the implementation of flush_iotlb_all hook
iommu/dma: add support for non-strict mode
iommu/amd: use default branch to deal with all non-supported
iommu/io-pgtable-arm: add support for non-strict mode
iommu/arm-smmu-v3: add support for non-strict mode

drivers/iommu/amd_iommu.c | 4 +---
drivers/iommu/arm-smmu-v3.c | 16 +++++++++++++---
drivers/iommu/dma-iommu.c | 25 +++++++++++++++++++++++++
drivers/iommu/io-pgtable-arm.c | 23 ++++++++++++++---------
include/linux/iommu.h | 7 +++++++
5 files changed, 60 insertions(+), 15 deletions(-)