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[Bug 1769053] Re: Ability to control phys-bits through libvirt
From: |
Christian Ehrhardt |
Subject: |
[Bug 1769053] Re: Ability to control phys-bits through libvirt |
Date: |
Wed, 19 Apr 2023 05:43:58 -0000 |
While the bugzilla case wasn't updated this landed in v8.7.0 via a series around
https://gitlab.com/libvirt/libvirt/-/commit/e6c29f09e5b75d7a8d79ae670407060446282c78
v9.0.0 of libvirt is in Ubuntu Lunar, due to that - from now on - one
can control the physical bit settings in a defined way through libvirt.
See maxphysaddr in [1] for how to use that.
Mid term Ubuntu will consider no more adding further variants of the
workaround, that was providing machine types with the -hpb suffix to
allow larger guests.
[1]: https://libvirt.org/formatdomain.html#cpu-model-and-topology
** Changed in: libvirt (Ubuntu)
Status: Triaged => Fix Released
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https://bugs.launchpad.net/bugs/1769053
Title:
Ability to control phys-bits through libvirt
Status in libvirt:
Confirmed
Status in QEMU:
Invalid
Status in libvirt package in Ubuntu:
Fix Released
Status in qemu package in Ubuntu:
Invalid
Bug description:
Attempting to start a KVM guest with more than 1TB of RAM fails.
It looks like we might need some extra patches:
https://lists.gnu.org/archive/html/qemu-discuss/2017-12/msg00005.html
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: qemu-system-x86 1:2.11+dfsg-1ubuntu7
ProcVersionSignature: Ubuntu 4.15.0-20.21-generic 4.15.17
Uname: Linux 4.15.0-20-generic x86_64
ApportVersion: 2.20.9-0ubuntu7
Architecture: amd64
CurrentDesktop: Unity:Unity7:ubuntu
Date: Fri May 4 16:21:14 2018
InstallationDate: Installed on 2017-04-05 (393 days ago)
InstallationMedia: Ubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.2)
MachineType: Dell Inc. XPS 13 9360
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-20-generic
root=/dev/mapper/ubuntu--vg-root ro quiet splash transparent_hugepage=madvise
vt.handoff=1
SourcePackage: qemu
UpgradeStatus: Upgraded to bionic on 2018-04-30 (3 days ago)
dmi.bios.date: 02/26/2018
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 2.6.2
dmi.board.name: 0PF86Y
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvr2.6.2:bd02/26/2018:svnDellInc.:pnXPS139360:pvr:rvnDellInc.:rn0PF86Y:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.family: XPS
dmi.product.name: XPS 13 9360
dmi.sys.vendor: Dell Inc.
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