linux-kernel - [PATCH kernel v4 0/2] DMA, powerpc/dma: Fallback to dma

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Message-Id: <20201029015241.73920-1-aik@ozlabs.ru>
Date:   Thu, 29 Oct 2020 12:52:39 +1100
From:   Alexey Kardashevskiy <aik@...abs.ru>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     Christoph Hellwig <hch@....de>,
        Michael Ellerman <mpe@...erman.id.au>,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
        Alexey Kardashevskiy <aik@...abs.ru>
Subject: [PATCH kernel v4 0/2] DMA, 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 replaces https://lkml.org/lkml/2020/10/28/929
which replaces https://lkml.org/lkml/2020/10/27/418
which replaces https://lkml.org/lkml/2020/10/20/1085


This is based on sha1
4525c8781ec0 Linus Torvalds "scsi: qla2xxx: remove incorrect sparse #ifdef".

Please comment. Thanks.



Alexey Kardashevskiy (2):
  dma: Allow mixing bypass and mapped DMA operation
  powerpc/dma: Fallback to dma_ops when persistent memory present

 arch/powerpc/kernel/dma-iommu.c        | 73 +++++++++++++++++++++++++-
 arch/powerpc/platforms/pseries/iommu.c | 51 ++++++++++++++----
 kernel/dma/mapping.c                   | 26 +++++++--
 arch/powerpc/Kconfig                   |  1 +
 kernel/dma/Kconfig                     |  4 ++
 5 files changed, 139 insertions(+), 16 deletions(-)

-- 
2.17.1