From: Nadav Amit <na...@vmware.com>
The previous patch, commit 268aa4548277 ("iommu/amd: Page-specific
invalidations for more than one page") was supposed to enable
page-selective IOTLB flushes on AMD.
Besides the bug that was already fixed by commit a017c567915f
("iommu/amd: Fix wrong parentheses on page-specific invalidations")
there are several remaining matters to enable and benefit from
page-selective IOTLB flushes on AMD:
1. Enable selective flushes on unmap (patch 1)
2. Avoid using flush-queue on vIOMMUs (patch 2)
3. Relaxed flushes when gathering, excluding vIOMMUs (patches 3-5)
4. Syncing once on scatter-gather map operations (patch 6)
Cc: Joerg Roedel <j...@8bytes.org>
Cc: Will Deacon <w...@kernel.org>
Cc: Jiajun Cao <caojia...@vmware.com>
Cc: Robin Murphy <robin.mur...@arm.com>
Cc: Lu Baolu <baolu...@linux.intel.com>
Cc: iommu@lists.linux-foundation.org
Cc: linux-ker...@vger.kernel.org
---
v2->v3:
* Rebase on v5.13-rc5
* Refactoring (patches 4-5) [Robin]
* Rework flush logic (patch 5): more relaxed on native
* Syncing once on scatter-gather operations (patch 6)
v1->v2:
* Rebase on v5.13-rc3
Nadav Amit (5):
iommu/amd: Selective flush on unmap
iommu/amd: Do not use flush-queue when NpCache is on
iommu: Factor iommu_iotlb_gather_is_disjoint() out
iommu/amd: Tailored gather logic for AMD
iommu/amd: Sync once for scatter-gather operations
Robin Murphy (1):
iommu: Improve iommu_iotlb_gather helpers
drivers/iommu/amd/init.c | 7 +++-
drivers/iommu/amd/iommu.c | 72 ++++++++++++++++++++++++++++++---
drivers/iommu/mtk_iommu.c | 5 +--
include/linux/iommu.h | 84 +++++++++++++++++++++++++++++++++------
4 files changed, 145 insertions(+), 23 deletions(-)
--
2.25.1
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
