Messages in this thread | | | From | Alexey Kardashevskiy <> | Subject | [PATCH kernel v4 0/2] DMA, powerpc/dma: Fallback to dma_ops when persistent memory present | Date | Thu, 29 Oct 2020 12:52:39 +1100 |
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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
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