2022-04-27 Project Stratos Sync Meeting notes

 Date

Apr 27, 2022

 Participants

  • @Alex Bennée

  • @Mathieu Poirier

  • @Leonardo Garcia

  • @Bill Mills

  • Srinivas Ramana (QC)

  • @Don Harbin

  • Christopher Clark

  • @Arnd Bergmann

 Agenda

 Discussion topics

  • AJB: wondered if anyone had run stuff on the xen-hv

    • MP: has run a bunch on x86 but not VirGL

  • AJB: Discussing the DMAops (https://lore.kernel.org/lkml/1650646263-22047-1-git-send-email-olekstysh@gmail.com/ )

    • AB: gave an overview of the the various DMA mapping stuff

    • CC: should look at Jurgen Xen Summit presentation

    • AJB: do DMA ops affect memory allocation?

      • AB: two APIs, one where you ask for a buffer (coherent ops interface)

      • AJB: does this cross sect with pKVM zero-copy?

      • AB: not really as dmaalloc deals with kernel memory and traditional zero-copy involves sharing user space address

  • AJB: pointed CC at the FEAT_LPA patches

 Action items

 Decisions