\uD83D\uDDD3 Date
\uD83D\uDC65 Participants
Christopher Clark
Srinivas Ramana
\uD83E\uDD45 Agenda
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\uD83D\uDDE3 Discussion
VK: Rust based i2c on Xen, PoC
Dom0 host kernel, with backend
DomU guest kernel
vhost-master from crate + bits from cloud hypervisor
linked in with EPAMs PoC virtio work
AB: we could create a shadow FD after the fact and pass that
AJB: any example of this
AB: KVM?
AJB: talked about irqfd/eventfs redirection:
Jira Legacy server System JIRA serverId 59107c6f-1e52-32bc-b58f-400d54bba998 key STR-79 AB: You can have FD sharing the vma sctructure
similar to fork semantics
MP: xen-sys crate double buffering working
nested memory buffers
now looking at Xen Foreign Map API
CC: hasn’t been able to talk to Doug
had changes been addressed?
MP: yes
MP: quiet since Jan
what about the Xen Test Framework
MP: only used to exercise the hypercalls
MP: basically want to know if he cares to go on
AJB: talked about our thoughts about where to host repo
we are ering towards hosting it in rust-vmm
CC: like the idea of being maintained in the community
BM: Where any changes available to the guest
AJB:
BM: when do we get to virtio-iommu?
needed for the limited memory interface
AB: thinks the iommu translation gets in the way
would need new code to support this in guest kernel
BM: fixed region will be the first limited memory visibility
will be used for the A/R hetrogenous modesl
VG: fixed region works well but SCMI only uses small descriptors
AB: still need copy in copy out
AB: iommu models makes more sense for fixed maps
e.g. static frame buffers
stable mappings
AB: some progress being made on fat virtqueue