wiki/docs/events/meeting-notes/2024-02-09.md

SIG/AltArch meeting 2024-02-09

Attendees

• Neil Hanlon
• Sherif Nagy
• Brian Clemens
• Stack

Follow Ups

• Raspberry Pi5
  • need 16k page kernel variant created

--# diff config-6.1.0-rpi7-rpi-2712 config-6.1.0-rpi7-rpi-v8
31c31
< CONFIG_LOCALVERSION="-v8-16k"
---
> CONFIG_LOCALVERSION="-v8"
270,275c270,275
< CONFIG_ARM64_PAGE_SHIFT=14
< CONFIG_ARM64_CONT_PTE_SHIFT=7
< CONFIG_ARM64_CONT_PMD_SHIFT=5
< CONFIG_ARCH_MMAP_RND_BITS_MIN=16
< CONFIG_ARCH_MMAP_RND_BITS_MAX=30
< CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=9
---
> CONFIG_ARM64_PAGE_SHIFT=12
> CONFIG_ARM64_CONT_PTE_SHIFT=4
> CONFIG_ARM64_CONT_PMD_SHIFT=4
> CONFIG_ARCH_MMAP_RND_BITS_MIN=18
> CONFIG_ARCH_MMAP_RND_BITS_MAX=24
> CONFIG_ARCH_MMAP_RND_COMPAT_BITS_MIN=11
391,392c391,392
< # CONFIG_ARM64_4K_PAGES is not set
< CONFIG_ARM64_16K_PAGES=y
---
> CONFIG_ARM64_4K_PAGES=y
> # CONFIG_ARM64_16K_PAGES is not set
394,395c394
< # CONFIG_ARM64_VA_BITS_36 is not set
< CONFIG_ARM64_VA_BITS_47=y
---
> CONFIG_ARM64_VA_BITS_39=y
397c396
< CONFIG_ARM64_VA_BITS=47
---
> CONFIG_ARM64_VA_BITS=39
422c421
< CONFIG_ARCH_FORCE_MAX_ORDER=12
---
> CONFIG_ARCH_FORCE_MAX_ORDER=11
889a889
> CONFIG_ARCH_WANTS_THP_SWAP=y

• Post-setup changes required to select which one user should boot
  • i.e., change initramfs / kernel lines to -v8 in config.txt / config-kernel.txt
  • https://chat.rockylinux.org/rocky-linux/pl/e7h9sqcb4pdnpqpwah3wcjxjac
• Neil and Sherif spoke to risc-v folks at FOSDEM/SOOCon24
  • No exact timeline, but hoping to get leads on hardware to use

Open Floor

• Stack: the wiki looks abandoned because the index page is empty/stubbed

Action Items

• Follow up on Orange Pi5
• Follow up on Libre boards
• Create variant for 16k kernel
• Kernel Packer for altarch
• Actually put content on wiki index/landing page so it doesn't look abandoned