linux-kernel - [PATCH v6 0/6] Fix double allocation in swiotlb

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Message-Id: <20240308152829.25754-1-will@kernel.org>
Date: Fri,  8 Mar 2024 15:28:23 +0000
From: Will Deacon <will@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: kernel-team@...roid.com,
	Will Deacon <will@...nel.org>,
	iommu@...ts.linux.dev,
	Christoph Hellwig <hch@....de>,
	Marek Szyprowski <m.szyprowski@...sung.com>,
	Robin Murphy <robin.murphy@....com>,
	Petr Tesarik <petr.tesarik1@...wei-partners.com>,
	Dexuan Cui <decui@...rosoft.com>,
	Nicolin Chen <nicolinc@...dia.com>,
	Michael Kelley <mhklinux@...look.com>
Subject: [PATCH v6 0/6] Fix double allocation in swiotlb_alloc()

Hi again, folks,

This is version six of the patches which I previously posted at:

v1: https://lore.kernel.org/r/20240126151956.10014-1-will@kernel.org
v2: https://lore.kernel.org/r/20240131122543.14791-1-will@kernel.org
v3: https://lore.kernel.org/r/20240205190127.20685-1-will@kernel.org
v4: https://lore.kernel.org/r/20240221113504.7161-1-will@kernel.org
v5: https://lore.kernel.org/r/20240228133930.15400-1-will@kernel.org

Changes since v5 include:

  - Rework the final patch to preserve page-alignment for streaming
    requests without a DMA alignment mask

  - Added Reviewed-by tags from Michael

Cheers,

Will

Cc: iommu@...ts.linux.dev
Cc: Christoph Hellwig <hch@....de>
Cc: Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Robin Murphy <robin.murphy@....com>
Cc: Petr Tesarik <petr.tesarik1@...wei-partners.com>
Cc: Dexuan Cui <decui@...rosoft.com>
Cc: Nicolin Chen <nicolinc@...dia.com>
Cc: Michael Kelley <mhklinux@...look.com>

--->8

Nicolin Chen (1):
  iommu/dma: Force swiotlb_max_mapping_size on an untrusted device

Will Deacon (5):
  swiotlb: Fix double-allocation of slots due to broken alignment
    handling
  swiotlb: Enforce page alignment in swiotlb_alloc()
  swiotlb: Honour dma_alloc_coherent() alignment in swiotlb_alloc()
  swiotlb: Fix alignment checks when both allocation and DMA masks are
    present
  swiotlb: Reinstate page-alignment for mappings >= PAGE_SIZE

 drivers/iommu/dma-iommu.c |  9 ++++++++
 kernel/dma/swiotlb.c      | 47 ++++++++++++++++++++++++++++-----------
 2 files changed, 43 insertions(+), 13 deletions(-)

-- 
2.44.0.278.ge034bb2e1d-goog