Ok, now we finally know it is about qemu&kernel patches - I'll add tasks for
that.
Still haven't seen any xen references, setting that to incomplete.
But given how new it is I'd punt this from 19.04 to 19.10 where things
in kernel&qemu will have matured and be safer to use.
If you are not ok with this please outline important use cases that will be
inhibited.
All changes are "just" adding definitions, no actual code added - but I'm
somewhat afraid of hidden dependencies - especially since we have no associated
testcase and it would need special (very new) hardware t be tested.
** Also affects: qemu (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: qemu (Ubuntu)
Status: New => Triaged
** Tags added: qemu-19.10
** Changed in: qemu (Ubuntu)
Importance: Undecided => Medium
** Changed in: xen (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1782206
Title:
KVM enable SnowRidge Accelerator Interfacing Architecture (AIA)
Status in linux package in Ubuntu:
New
Status in qemu package in Ubuntu:
Triaged
Status in xen package in Ubuntu:
Incomplete
Bug description:
CPU core (Tremont) includes Accelerator Interfacing Architecture (AIA)
features including:
- UMONITOR/UMWAIT: Ring-3 MONITOR/MWAIT with timeout. For memory-based synch
with accelerators
- TPAUSE: Monitor-less wait (with timeout). For wait-on-multiple or
wait-for-interrupt usages
- MOVDIRI: 8B streaming doorbell write capability. For streaming accelerator
usages.
- MOVDIR64B: Non-temporal write with 64B guaranteed write-atomicity. For
latency critical accelerator usages
Upstream target linux 4.20/Qemu-3.10
Target Release: 19.04
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