Date

27 Apr 2022

 Participants

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• Alex Bennée

• Mathieu Poirier

• Leonardo Garcia

• Bill Mills

• Srinivas Ramana (QC)

• Don Harbin

• Christopher Clark

• Arnd Bergmann

• @ mention a person to add them as an attendee and they will be notified.

 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

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 Decisions

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