APPLIED: [PATCH 0/1][fgh:linux-kvm] Enable CONFIG_ACPI_HOTPLUG_MEMORY

[Tim Gardner]

Applied to fgh:linux-kvm. Thanks.

-rtg

On 4/23/21 10:37 AM, Tim Gardner wrote:
> BugLink: https://bugs.launchpad.net/bugs/1925008
> 
> [Impact]
> 
> Memory hot-plugging is not working with public cloud-images. Error with dmesg shows:
> [ 184.544535] acpi PNP0C80:00: Enumeration failure
> 
> checking kernel configuration:
> root at ubuntu:/boot# uname -r
> 5.4.0-1038-kvm
> root at ubuntu:/boot# grep CONFIG_ACPI_HOTPLUG_MEMORY config-5.4.0-1038-kvm
> # CONFIG_ACPI_HOTPLUG_MEMORY is not set
> 
> Obviously the necessary kernel configuration for ACPI memory hotplug is missing.
> 
> root at ubuntu:~# cat /etc/cloud/build.info
> build_name: server
> serial: 20210415
> ---
> ProblemType: Bug
> AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code 2: ls: cannot access '/dev/snd/': No such file or directory
> AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
> ApportVersion: 2.20.11-0ubuntu27.16
> Architecture: amd64
> ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
> CRDA: N/A
> CasperMD5CheckResult: skip
> DistroRelease: Ubuntu 20.04
> IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig'
> Lsusb: Error: command ['lsusb'] failed with exit code 1:
> Lsusb-t: Error: command ['lsusb', '-t'] failed with exit code 1: /sys/bus/usb/devices: No such file or directory
> Lsusb-v: Error: command ['lsusb', '-v'] failed with exit code 1:
> MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
> Package: linux (not installed)
> PciMultimedia:
> 
> ProcEnviron:
>   TERM=xterm-256color
>   PATH=(custom, no user)
>   XDG_RUNTIME_DIR=<set>
>   LANG=C.UTF-8
>   SHELL=/bin/bash
> ProcFB:
> 
> ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-1038-kvm root=PARTUUID=a204284f-e3de-498d-a306-c4e7f6b62831 ro console=tty1 console=ttyS0 panic=-1
> ProcVersionSignature: Ubuntu 5.4.0-1038.39-kvm 5.4.101
> RelatedPackageVersions:
>   linux-restricted-modules-5.4.0-1038-kvm N/A
>   linux-backports-modules-5.4.0-1038-kvm N/A
>   linux-firmware N/A
> RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
> Tags: focal uec-images
> Uname: Linux 5.4.0-1038-kvm x86_64
> UnreportableReason: This report is about a package that is not installed.
> UpgradeStatus: No upgrade log present (probably fresh install)
> UserGroups: N/A
> _MarkForUpload: False
> dmi.bios.date: 04/01/2014
> dmi.bios.vendor: SeaBIOS
> dmi.bios.version: 1.12.0-1
> dmi.chassis.type: 1
> dmi.chassis.vendor: QEMU
> dmi.chassis.version: pc-i440fx-2.7
> dmi.modalias: dmi:bvnSeaBIOS:bvr1.12.0-1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.7:cvnQEMU:ct1:cvrpc-i440fx-2.7:
> dmi.product.name: Standard PC (i440FX + PIIX, 1996)
> dmi.product.version: pc-i440fx-2.7
> dmi.sys.vendor: QEMU
> 
> 
> [Test Plan]
> 
> Boot a KVM instance and ensure there are no new kernel log errors.
> See https://bugs.launchpad.net/cloud-images/+bug/1925008/comments/19 for Focal test results.
> 
> [Where problems could occur]
> 
> Adding memory could fail, or cause other configuration issues. Regressions seem
> unlikely since this config option is enabled in all cloud kernels except linux-azure.
> 
> [Other Info]
> 
> See https://bugs.launchpad.net/cloud-images/+bug/1925008/comments/17 for the full QEMU
> command.
> 

-- 
-----------
Tim Gardner
Canonical, Inc