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[Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB o
From: |
Dan Streetman |
Subject: |
[Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM |
Date: |
Fri, 04 May 2018 16:19:48 -0000 |
And with non-massive mem (so the guest actually boots up), the guest
does show only 40 bits of phys mem addressing, so qemu will definitely
have to increase that to be able to provide >1TB of phys mem to the
guest (assuming qemu doesn't adjust that dynamically based on the total
mem provided to the guest)
address@hidden:~$ grep -m 1 'address sizes' /proc/cpuinfo
address sizes : 40 bits physical, 48 bits virtual
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https://bugs.launchpad.net/bugs/1769053
Title:
Cannot start a guest with more than 1TB of RAM
Status in QEMU:
Incomplete
Status in qemu package in Ubuntu:
Incomplete
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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- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, ChristianEhrhardt, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, ChristianEhrhardt, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Daniel Axtens, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Dr. David Alan Gilbert, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Dr. David Alan Gilbert, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM,
Dan Streetman <=
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Dan Streetman, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Dan Streetman, 2018/05/04
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, ChristianEhrhardt, 2018/05/07
- [Qemu-devel] [Bug 1769053] Re: Cannot start a guest with more than 1TB of RAM, Daniel Berrange, 2018/05/08