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Content suggestion for This Week in LoongArch newsletter / 《每周一龙》新闻线索信箱 #16

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xen0n opened this issue May 11, 2023 · 255 comments
Open

Content suggestion for This Week in LoongArch newsletter / 《每周一龙》新闻线索信箱 #16

xen0n opened this issue May 11, 2023 · 255 comments

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@xen0n
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xen0n commented May 11, 2023 •
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直接回复新闻线索。尽可能附上出典链接。

欢迎任何形式的投稿只要内容与 LoongArch 新世界（又称“社区生态”、“ABI 2.0”）有关：

  • 谁整了新活（开源项目 PR、提案、视频、论坛水贴等均可）
  • 可公开的秘闻
  • 其他你认为有关的内容：项目维护者会帮你判断

也建议同步投递《狗剩微闻》栏目，那边的投稿内容也会在周报编撰时被考虑。

注意事项

本站原则上不报道纯粹旧世界（又称“ABI 1.0”，或在 2021~2023 的语境下与“商业生态”大致等价）范畴的新闻。

不报道纯粹的旧世界动态，主要还是由于社区无法实质参与旧世界研发：Loongnix、Kylin、UOS 等发行版的工单系统、自动化构建系统等基础设施未对公网开放。总不能指望通过 [email protected] 的唯一渠道有效协作。

此外，目前已知所有旧世界发行版均有商业背景，但本站作为利益无关方，也不便单方面提供商业宣传渠道（进而招致未提及的友商，以至其他非龙芯阵营的“友商”的不必要指摘）。
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@xen0n xen0n pinned this issue May 11, 2023
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@xen0n
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xen0n commented May 16, 2023

以上的内容都已在《每周一龙：第 1 期》体现

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xen0n commented Jun 5, 2023

以上的内容都已在《每周一龙：第 4 期》体现

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@xen0n
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xen0n commented Jun 12, 2023

以上的内容都已在《每周一龙：第 5 期》体现

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xen0n commented Jun 27, 2023

以上的内容都已在《每周两龙：第 6 期》（#26）体现

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@xen0n
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xen0n commented May 14, 2024

以上内容都已在《每周一龙：第 48 期》（#184）体现

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xen0n commented May 19, 2024

以上内容都已在《每周一龙：第 49 期》（#186）体现

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@LiarOnce
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LiarOnce commented Jun 10, 2024 •
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算整活项目

实测在XA61200主板上，将7A2000桥片原本的铝制散块更换为尺寸更大且加装了风扇的散热器后，更新目前最新版本bios，稳定性大幅度提升，GCN4的显卡出现gpu reset的概率大幅度降低，现在已经很难出现gpu reset了。

该改装从5月18日开始实施并使用到现在，稳定性已经相对可用，改装图例已经放入：https://github.com/LiarOnce-LoongAL/.github/blob/main/cooler/chipset.md

硬件配置单公开于（下图的西数绿盘并不推荐用于正式生产环境，请勿安装）：https://github.com/LiarOnce-LoongAL/.github/blob/main/profile/README.md
经此改装后整块主板只有纽扣电池，散热器背板，BIOS Flash还是原装的了
运行效果：
IMG_20240610_233818

@yxd-ym
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yxd-ym commented Jun 11, 2024 •
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Loongarch64 support is added to zig's internal glibc ABI definitions. But the new ABI list file is not added to zig's new release 0.13.0 yet.

ziglang/glibc-abi-tool#5
ziglang/glibc-abi-tool@7b9fce7

@yxd-ym
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yxd-ym commented Jun 11, 2024 •
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Toolchains (LLVM, musl, glibc) of zig 0.13.0 are all updated to versions that support loongarch64. I think it is possible to add full loongarch64 support to zig now.

https://ziglang.org/download/0.13.0/release-notes.html#Toolchain

For previous attempt, see:

yxd-ym/zig-bootstrap#1

@xen0n
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xen0n commented Jun 11, 2024

#16 (comment) 及之上的评论已在《每周一龙：第 50 期》（#188）体现

#16 (comment) 已在《每周两龙：第 51 期》（#190）体现

@xry111
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xry111 commented Jun 13, 2024

整活项目：xry111 为 GCC 增加 __builtin_{add,sub,mul}_overflow 和 __builtin_{add,sub}c 的 LBT 实现，
发现生成的代码虽然指令数更少，但反而跑得更慢，故不向上游提交该实现。

@MingcongBai
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修复了先前龙架构无法正常启动使用 grub-mkrescue 工具生成的安同 OS 镜像的问题：

grub-mkrescue 会创建小写的 EFI removable image 路径 (/efi/boot/bootloongarch64.efi) ，ESP 镜像文件系统为 FAT12。然而，无长文件名支持的 FAT 实际上是不会区分大小写的，但龙芯的固件似乎还是把 FAT12 当成了区分大小写的文件系统，于是就发生了找不到标准 EFI 路径的问题（UEFI 标准 3.4.1.1 节定义路径必须全大写，BOOTx64.EFI 除外）。于是我们编写补丁，将 grub-mkrescue 写入的 EFI 镜像路径全部改为大写，严格符合 UEFI 标准，在龙架构主板上也可以正常启动了。

这个问题很可能源于上游疏忽，因为通过观察 util/grub-install.c 可知，grub-install 默认写入的路径为全大写，某种意义上让绝大多数发行版侥幸绕开了这个坑（新世界据我所知只有安同 OS 在用 grub-mkrescue 生成 ISO）。

补丁链接 >>

@xen0n
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xen0n commented Jun 14, 2024

@xry111
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xry111 commented Jun 18, 2024

Binutils 开发分支对于基于栈的重定位类型支持已经爆炸：https://sourceware.org/pipermail/binutils/2024-June/134876.html

我个人建议干脆把这些重定位类型的支持删掉。

@MarsDoge
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MarsDoge commented Jun 19, 2024 •
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整活项目：
kilaterlee 针对Memtest86+增加了LoongArch64的支持: https://github.com/loongson/Firmware/tree/main/Memtest86%2B
EDK2社区OvmfPkg正式接收LoongArch Qemu virt-machine: tianocore/edk2#5746
EDK II Test Project: edk2-test-stable202406 正式支持LoongArch64: https://github.com/tianocore/edk2-test/releases

@FurryAcetylCoA
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FurryAcetylCoA commented Jun 28, 2024 •
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@zhangn1985
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Sui Jingfeng发布了etnaviv 的PCIe形态驱动的第14版。

Christian Gmeiner表示近期会抽时间审查代码，并希望能尽快合并这组补丁。

但作者对此似乎不太乐观， 仅表示请求合并前6个补丁。

如果顺利合并的话，接下来的工作可能是用TTM重写GEM

@xen0n
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xen0n commented Aug 10, 2024 •
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fstat drama

@shankerwangmiao
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https://gist.github.com/shankerwangmiao/a15e17fc5c1c1dfb883490862107fcbb

@yxd-ym
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yxd-ym commented Aug 16, 2024 •
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https://github.com/ziglang/zig/pulls?q=is%3Apr+loongarch

目前 zig 的 loongarch64 支持已经基本就绪。当前正在等待引入 LLVM 19 以解决已知问题：

乐观估计的话， zig 下一个版本 0.14.0 可能可以支持

  • loongarch64-linux-gnu
  • loongarch64-linux-musl

@yxd-ym
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yxd-ym commented Sep 20, 2024

ziglang/zig-bootstrap#188

zig 的 loongarch64 初步支持已经完成。zig-bootstrap 已经能初始化一个可以工作的 zig。

@LinuxResearcher
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ventoy/Ventoy#2955

@Fearyncess
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nix-rust/nix#2507
nix-rust/nix#2509

@Catty2014
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Catty2014 commented Sep 22, 2024 •
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移植了osu-lazer到loongarch(ABI2.0)
https://github.com/Catty2014/osu-lazer-loongarch
代码正在整理

@yxd-ym
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yxd-ym commented Sep 25, 2024 •
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https://ziglang.org/devlog/#2024-09-24

目前还有一些已知问题，比如

  • llvm fp16 的处理
  • memory page size hard code 在新世界发行版主流的 16KiB

@yxd-ym
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yxd-ym commented Oct 10, 2024

zig 计划在 0.15 版本实现 loongarch64-linux tier 1 支持

ziglang/zig#21646

Contributions are welcomed.

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