Most likely we will have qemu 4.2 in Ubuntu 20.04.
But we already closed this bug for qemu with the patches you identified in the
past.
If you need - for tracking purposes - a bug that closes once these further
changes are in I'd ask you to open a new one.
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qemu post 4.1.0 (yet untagged)
67192a298f5 x86/cpu: Add support for UMONITOR/UMWAIT/TPAUSE
6508799707b target/i386: Add support for save/load IA32_UMWAIT_CONTROL MSR
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** Description changed:
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-in
Additional KVM patches has been merged (post 5.3-rc8):
e69e72faa3a KVM: x86: Add support for user wait instructions
6e3ba4abcea KVM: vmx: Emulate MSR IA32_UMWAIT_CONTROL
bf653b78f96 KVM: vmx: Introduce handle_unexpected_vmexit and handle WAITPKG
vmexit
[There's no Xen AIA work (yet)]
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You re
Setting linux task to triaged, as there are commits to pick up. Xen I'm
still unsure.
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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** Description changed:
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-in
This bug was fixed in the package qemu - 1:4.0+dfsg-0ubuntu1
---
qemu (1:4.0+dfsg-0ubuntu1) eoan; urgency=medium
* Merge with Upstream release of qemu 4.0.
Among many other things this fixes LP Bugs:
LP: #1782206 - SnowRidge Accelerator Interfacing Architecture (AIA)
LP:
Looks like this is a feature request rather than a bug?
** Changed in: linux (Ubuntu)
Importance: Undecided => Wishlist
** Changed in: qemu (Ubuntu)
Importance: Medium => Wishlist
** Changed in: xen (Ubuntu)
Importance: Undecided => Wishlist
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Chris: a little of both. The UMONITOR/UMWAIT/TPAUSE is delay, but the
rest has been upstreamed (as you already noted.)
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Title:
KVM enable SnowRi
The qemu commits have landed in 4.0 - so that part should work in Ubuntu
19.10
The kernel commits are in 5.1 as outlined by Paul above already (thanks).
@Paul - since the initial upstream target was "linux 5.3" are there things
missing or did this just work out faster than expected?
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** Description changed:
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-in
33823f4d6 x86/cpufeatures: Enumerate MOVDIRI instruction
ace6485a0 x86/cpufeatures: Enumerate MOVDIR64B instruction
65e259d5c tools arch x86: Update tools's copy of cpufeatures.h
(linux 5.1-rc1)
74f2370bb KVM: x86: expose MOVDIRI CPU feature into VM.
c029b5deb KVM: x86: expose MOVDIR64B CPU featur
KVM patches are queuing.
** Description changed:
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-o
The detail git commits of Qemu are as below:
1c65775ffc2dbd276a8bffe592feba0e186a151c
==> x86/cpu: Enable MOVDIR64B cpu feature
24261de4916596d8ab5f5fee67e9e7a19e8325a5
==> x86/cpu: Enable MOVDIRI cpu feature
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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 wit
Others information:
The series for kernel patches:
https://lkml.org/lkml/2018/11/6/379
https://lkml.org/lkml/2018/11/6/377
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Title:
KVM enable Sno
post qemu 3.1.0 (currently untagged)
24261de4 x86/cpu: Enable MOVDIRI cpu feature
1c65775f x86/cpu: Enable MOVDIR64B cpu feature
** Description changed:
CPU core (Tremont) includes Accelerator Interfacing Architecture (AIA)
features including:
- UMONITOR/UMWAIT: Ring-3 MONITOR/MWAIT wit
Hi,
title says KVM, but the bug is only against xen so far.
Will this need an "qemu (ubuntu)" and/or "linux (ubuntu)" task as well?
- kernel 4.20 is listed so I assume the latter.
- Comments do not mention Qemu yet
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** Description changed:
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-in
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