linux-kernel - [PATCH kernel 0/2] powerpc/dma: Fallback to dma

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Message-Id: <20201021032026.45030-1-aik@ozlabs.ru>
Date:   Wed, 21 Oct 2020 14:20:24 +1100
From:   Alexey Kardashevskiy <aik@...abs.ru>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     Christoph Hellwig <hch@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        linux-kernel@...r.kernel.org, Alexey Kardashevskiy <aik@...abs.ru>
Subject: [PATCH kernel 0/2] powerpc/dma: Fallback to dma_ops when persistent memory present

This allows mixing direct DMA (to/from RAM) and
IOMMU (to/from apersistent memory) on the PPC64/pseries
platform. This was supposed to be a single patch but
unexpected move of direct DMA functions happened.

This is based on sha1
7cf726a59435 Linus Torvalds "Merge tag 'linux-kselftest-kunit-5.10-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest".

Please comment. Thanks.



Alexey Kardashevskiy (2):
  Revert "dma-mapping: move large parts of <linux/dma-direct.h> to
    kernel/dma"
  powerpc/dma: Fallback to dma_ops when persistent memory present

 include/linux/dma-direct.h             | 106 ++++++++++++++++++++++
 kernel/dma/direct.h                    | 119 -------------------------
 arch/powerpc/kernel/dma-iommu.c        |  68 +++++++++++++-
 arch/powerpc/platforms/pseries/iommu.c |  41 +++++++--
 kernel/dma/direct.c                    |   2 +-
 kernel/dma/mapping.c                   |   2 +-
 6 files changed, 207 insertions(+), 131 deletions(-)
 delete mode 100644 kernel/dma/direct.h

-- 
2.17.1