ikwzm/udmabuf

Issues

• Cannot write mmap'ed buffer content to disk using O_DIRECT flag

  #117 opened 2 months ago by iMineLink
  10

• zerocopy network TCP send with u-dma-buf

  #121 opened 3 months ago by joshuafc
  3

• memcpy from udmabuf mmap buffer slow than buffer from malloc

  #120 opened 3 months ago by joshuafc
  4

• Difference with upstream driver

  #118 opened 4 months ago by enceladus13
  3

• Xilinx Zynqmp: The read data is inconsistent with the data written by the PL

  #116 opened 9 months ago by zhanghongg
  47

• name conflict with udmabuf driver in mainline linux

  #115 opened a year ago by mvduin
  1

• udmabuf can't be build on kernel >= 6.6.0

  #114 opened a year ago by stan-servaenergy
  1

• Could this be used with V4L2/libcamera buffers on the Raspberry Pi 4 (Arm A72)

  #107 opened a year ago by octopus-russell
  6

• Do you plan support for versal devices?

  #112 opened a year ago by alexantwi
  1

• Using udmabuf on linux zynq7020

  #111 opened a year ago by lone-boy
  3

• Once the creation of a device fails, a device with the same name cannot be created.

  #110 opened a year ago by ikwzm
  0

• Doubts with DMA coherency mode and quirk-mmap

  #108 opened a year ago by ALIBERA
  5

• AXI MCDMA support?

  #109 opened a year ago by Livius90
  6

• PetaLinux 2023.1 / Yocto Langdale build - no .ko files are installed, thus no package is created

  #106 opened a year ago by DavidAntliff
  12

• Build failure since kernel v6.3

  #105 opened a year ago by florisch
  1

• memory-region

  #103 opened 2 years ago by noelpedro
  4

• The reserved space is used to expand the CMA space, and the u-dma-buf driver cannot be used normally

  #96 opened 2 years ago by Noah-naihe
  5

• Unsupported node format error in Dmesg

  #104 opened 2 years ago by noelpedro
  6

• In Python test code there is a typo

  #102 opened 2 years ago by sapertuz
  3

• Cache coherency problem on ARM in u-dma-buf 4.4.0

  #101 opened 2 years ago by ikwzm
  0

• Using "u-dma-buf" on x86 with IOMMU enabled

  #68 opened 4 years ago by JMStranz
  4

• Unusual issue when mmapping udmabuf for network transfer

  #100 opened 2 years ago by DavidAntliff
  6

• > I ran into the same issue on an x86_64 and it was fixed by changing the dma_mask_bit module parameter like so: `insmod udmabuf.ko dma_mask_bit=64 udmabuf0=8388608`

  #99 opened 2 years ago by bipingamiyv
  1

• Attempting to allocate a large buffer in the CMA area of reserved_memory fails to allocate pages

  #98 opened 2 years ago by ikwzm
  2

• Read()/Write() performance

  #97 opened 2 years ago by Hello-FPGA
  8

• How about using one same device node such as udmabuf0 in two different processes

  #86 opened 2 years ago by Homio
  2

• About the data consistency problem of udmabuf

  #95 opened 2 years ago by Noah-naihe
  2

• (Again) memory cache management and coherency

  #79 opened 3 years ago by pmdaye
  7

• Zynq Ultrascale+ (ARM Cortex A-53) Kernel 5.15.19 problem

  #94 opened 2 years ago by oguzhancik
  4

• udmabuf at fixed physical address in linux x86

  #93 opened 2 years ago by njsys
  1

• dma_alloc_coherent(size=16777216) failed. return(0)

  #88 opened 2 years ago by azAghaee
  6

• x86_64 support ? compile error

  #85 opened 2 years ago by gadh
  1

• u-dma-buf_test missing stdlib, unistd and time headers

  #91 opened 2 years ago by darko31
  1

• support for microblaze ?

  #87 opened 2 years ago by doonny
  8

• kernel 5.10 support

  #80 opened 2 years ago by Tobinjh
  2

• udmabuf write issue from firmware/pci

  #84 opened 3 years ago by njsys
  4

• include file error. Basic build usage question

  #83 opened 3 years ago by njsys
  9

• typo in sync_for_cpu sample in documentation?

  #82 opened 3 years ago by 5p00kk
  3

• Allocating multiple DMA buffers but not in a single parse

  #81 opened 3 years ago by rajatkha
  3

• Selected processor does not support 'isb' in ARM mode

  #78 opened 3 years ago by alexis031182
  2

• Strange memory errors

  #77 opened 4 years ago by Anthonywolfe
  5

• Regarding Manual cache management with the CPU cache still being enabled

  #76 opened 4 years ago by balaji-ch
  3

• Check for contiguity

  #75 opened 4 years ago by balaji-ch
  4

• Update read me for sizes more than 4MiB

  #72 opened 4 years ago by balaji-ch
  1

• Zynq u-dma-buf with DMA

  #74 opened 4 years ago by gtortone
  5

• memory-region property how to use it?

  #73 opened 4 years ago by balaji-ch
  1

• petalinux2020.2 do not work with u-dma-buf

  #70 opened 4 years ago by roundchen
  2

• Setting dma-coherent on devices created through /dev/u-dma-buf-mgr

  #69 opened 4 years ago by lucasbrasilino
  4

• Trying to perform DMA reads

  #64 opened 4 years ago by daloisio
  2

• delete hang forever

  #65 opened 4 years ago by florisch
  2