From: Robin Murphy <robin.murphy@arm.com>
To: joro@8bytes.org, will@kernel.org
Cc: linux-kernel@vger.kernel.org, willy@infradead.org,
iommu@lists.linux-foundation.org
Subject: [PATCH 0/9] iommu: Refactor flush queues into iommu-dma
Date: Tue, 23 Nov 2021 14:10:35 +0000 [thread overview]
Message-ID: <cover.1637671820.git.robin.murphy@arm.com> (raw)
Hi all,
As promised, this series cleans up the flush queue code and streamlines
it directly into iommu-dma. Since we no longer have per-driver DMA ops
implementations, a lot of the abstraction is now no longer necessary, so
there's a nice degree of simplification in the process. Un-abstracting
the queued page freeing mechanism is also the perfect opportunity to
revise which struct page fields we use so we can be better-behaved
from the MM point of view, thanks to Matthew.
These changes should also make it viable to start using the gather
freelist in io-pgtable-arm, and eliminate some more synchronous
invalidations from the normal flow there, but that is proving to need a
bit more careful thought than I have time for in this cycle, so I've
parked that again for now and will revisit it in the new year.
For convenience, branch at:
https://gitlab.arm.com/linux-arm/linux-rm/-/tree/iommu/iova
I've build-tested for x86_64, and boot-tested arm64 to the point of
confirming that put_pages_list() gets passed a valid empty list when
flushing, while everything else still works.
Cheers,
Robin.
Matthew Wilcox (Oracle) (2):
iommu/amd: Use put_pages_list
iommu/vt-d: Use put_pages_list
Robin Murphy (7):
gpu: host1x: Add missing DMA API include
iommu/iova: Squash entry_dtor abstraction
iommu/iova: Squash flush_cb abstraction
iommu/amd: Simplify pagetable freeing
iommu/iova: Consolidate flush queue code
iommu/iova: Move flush queue code to iommu-dma
iommu: Move flush queue data into iommu_dma_cookie
drivers/gpu/host1x/bus.c | 1 +
drivers/iommu/amd/io_pgtable.c | 116 ++++++--------
drivers/iommu/dma-iommu.c | 266 +++++++++++++++++++++++++++------
drivers/iommu/intel/iommu.c | 89 ++++-------
drivers/iommu/iova.c | 200 -------------------------
include/linux/iommu.h | 3 +-
include/linux/iova.h | 69 +--------
7 files changed, 295 insertions(+), 449 deletions(-)
--
2.28.0.dirty
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next reply other threads:[~2021-11-23 14:10 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-23 14:10 Robin Murphy [this message]
2021-11-23 14:10 ` [PATCH 1/9] gpu: host1x: Add missing DMA API include Robin Murphy
2021-11-24 14:05 ` Robin Murphy
2021-12-06 12:20 ` Joerg Roedel
2021-11-23 14:10 ` [PATCH 2/9] iommu/iova: Squash entry_dtor abstraction Robin Murphy
2021-11-23 14:10 ` [PATCH 3/9] iommu/iova: Squash flush_cb abstraction Robin Murphy
2021-11-23 14:10 ` [PATCH 4/9] iommu/amd: Simplify pagetable freeing Robin Murphy
2021-12-06 12:40 ` Joerg Roedel
2021-12-06 13:28 ` Robin Murphy
2021-11-23 14:10 ` [PATCH 5/9] iommu/amd: Use put_pages_list Robin Murphy
2021-11-23 14:10 ` [PATCH 6/9] iommu/vt-d: " Robin Murphy
2021-11-23 14:10 ` [PATCH 7/9] iommu/iova: Consolidate flush queue code Robin Murphy
2021-11-23 14:10 ` [PATCH 8/9] iommu/iova: Move flush queue code to iommu-dma Robin Murphy
2021-11-23 14:10 ` [PATCH 9/9] iommu: Move flush queue data into iommu_dma_cookie Robin Murphy
2021-11-23 22:40 ` kernel test robot
2021-11-24 17:25 ` John Garry via iommu
2021-11-24 18:00 ` Robin Murphy
2021-11-24 17:21 ` [PATCH 0/9] iommu: Refactor flush queues into iommu-dma John Garry via iommu
2021-11-24 18:33 ` Robin Murphy
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