| 2021-06-24 18:06:22 |
Karsten Necke |
bug |
|
|
added bug |
| 2021-06-25 08:33:45 |
Juerg Haefliger |
nominated for series |
|
Ubuntu Focal |
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| 2021-06-25 08:33:45 |
Juerg Haefliger |
bug task added |
|
linux-raspi-5.4 (Ubuntu Focal) |
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| 2021-06-25 08:34:28 |
Juerg Haefliger |
affects |
linux-raspi-5.4 (Ubuntu) |
linux-raspi (Ubuntu) |
|
| 2021-10-17 20:59:36 |
Launchpad Janitor |
linux-raspi (Ubuntu): status |
New |
Confirmed |
|
| 2021-10-17 20:59:36 |
Launchpad Janitor |
linux-raspi (Ubuntu Focal): status |
New |
Confirmed |
|
| 2022-01-20 14:42:31 |
Juerg Haefliger |
marked as duplicate |
|
1933627 |
|
| 2022-01-20 16:30:15 |
Juerg Haefliger |
removed duplicate marker |
1933627 |
|
|
| 2022-01-20 16:30:20 |
Juerg Haefliger |
linux-raspi (Ubuntu): status |
Confirmed |
Invalid |
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| 2022-01-20 16:30:25 |
Juerg Haefliger |
linux-raspi (Ubuntu Focal): status |
Confirmed |
In Progress |
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| 2022-01-20 16:30:28 |
Juerg Haefliger |
linux-raspi (Ubuntu Focal): assignee |
|
Juerg Haefliger (juergh) |
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| 2022-01-20 16:34:00 |
Juerg Haefliger |
description |
It appears that large page support and transparent hugepages are disabled in config on the Raspberry Pi. It would be nice if they were enabled in the kernel configuration, even if they are disabled by default. Then they could be set in user-editable config via the "transparent_hugepage" boot option.
With 4GB hardware in this family, there might be valid uses for large pages.
root@ubuntu:/home/ubuntu# hugeadm --explain
hugeadm:ERROR: kernel does not support huge pages
root@ubuntu:/home/ubuntu# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
root@ubuntu:/home/ubuntu# uname -a
Linux ubuntu 5.4.0-1038-raspi #41-Ubuntu SMP PREEMPT Thu Jun 17 14:14:11 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux
root@ubuntu:/home/ubuntu# grep -i huge /boot/config-5.4.0-1038-raspi
CONFIG_SYS_SUPPORTS_HUGETLBFS=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
# CONFIG_TRANSPARENT_HUGEPAGE is not set
# CONFIG_HUGETLBFS is not set |
[ Impact ]
It appears that large page support and transparent hugepages are disabled in config on the Raspberry Pi. It would be nice if they were enabled in the kernel configuration, even if they are disabled by default. Then they could be set in user-editable config via the "transparent_hugepage" boot option.
With 4GB hardware in this family, there might be valid uses for large pages.
root@ubuntu:/home/ubuntu# hugeadm --explain
hugeadm:ERROR: kernel does not support huge pages
root@ubuntu:/home/ubuntu# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
root@ubuntu:/home/ubuntu# uname -a
Linux ubuntu 5.4.0-1038-raspi #41-Ubuntu SMP PREEMPT Thu Jun 17 14:14:11 UTC 2021 aarch64 aarch64 aarch64 GNU/Linux
root@ubuntu:/home/ubuntu# grep -i huge /boot/config-5.4.0-1038-raspi
CONFIG_SYS_SUPPORTS_HUGETLBFS=y
CONFIG_ARCH_WANT_HUGE_PMD_SHARE=y
CONFIG_HAVE_ARCH_TRANSPARENT_HUGEPAGE=y
CONFIG_HAVE_ARCH_HUGE_VMAP=y
# CONFIG_TRANSPARENT_HUGEPAGE is not set
# CONFIG_HUGETLBFS is not set
[ Test Case ]
See above:
[ Fix ]
Enable HUGETLBFS and TRANSPARENT_HUGEPAGE to match the master kernel and hirsure and later raspi kernels.
[ Where Problems Could Occur ]
Thess configs enable code that is disabled by default. However, there is minimal stub code running at boot so problems would most likely show up as splats during boot or later on when hugetlbfs is explicitly mounted by systemd. |
|
| 2022-01-25 11:57:57 |
Juerg Haefliger |
linux-raspi (Ubuntu Focal): status |
In Progress |
Fix Committed |
|
| 2022-02-16 08:22:05 |
Ubuntu Kernel Bot |
tags |
|
verification-needed-focal |
|
| 2022-02-19 14:20:00 |
Karsten Necke |
tags |
verification-needed-focal |
verification-done-focal |
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| 2022-03-03 08:58:05 |
Launchpad Janitor |
linux-raspi (Ubuntu Focal): status |
Fix Committed |
Fix Released |
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| 2022-03-03 08:58:05 |
Launchpad Janitor |
cve linked |
|
2021-4083 |
|
| 2022-03-03 08:58:05 |
Launchpad Janitor |
cve linked |
|
2021-4155 |
|
| 2022-03-03 08:58:05 |
Launchpad Janitor |
cve linked |
|
2022-0330 |
|
| 2022-03-03 08:58:05 |
Launchpad Janitor |
cve linked |
|
2022-22942 |
|
