Me:
- https://github.com/xen0n
- Member of the Go loong64 porters team (@golang/loong64)
- Tinkers with things for fun
- Linux/LoongArch port reviewer
WÁNG Xuěruì xen0n
xen0n
/ test-page-delta.cc
Created
July 25, 2023 12:11
The verification code behind LLD's getLoongArchPageDelta
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| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception | |
| // Ever wondered how the wicked logic in https://github.com/llvm/llvm-project/blob/6084ee742064cf8/lld/ELF/Arch/LoongArch.cpp#L86-L169 | |
| // got discovered? This is the experiment I've done... | |
| #include <cstdio> | |
| #include <cstdint> | |
| #include <cstdlib> | |
| #include <unistd.h> |
xen0n
/ linux-xor-simd-test.c
Created
July 21, 2023 12:57
Sketching LoongArch SIMD acceleration for Linux XOR ops
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| // SPDX-License-Identifier: GPL-2.0-or-later | |
| /* | |
| $ gcc -O3 -o linux-xor-simd-test linux-xor-simd-test.c | |
| $ ./linux-xor-simd-test | |
| ref (size=4096 ) passed 16383 times: 0.005044150 s total, 0.000000307 s per pass, 12687.191 MiB/s | |
| lsx_32b (size=4096 ) passed 16383 times: 0.002663250 s total, 0.000000162 s per pass, 24029.323 MiB/s | |
| lsx_64b (size=4096 ) passed 16383 times: 0.002517970 s total, 0.000000153 s per pass, 25415.749 MiB/s | |
| lsx_128b (size=4096 ) passed 16383 times: 0.002517590 s total, 0.000000153 s per pass, 25419.585 MiB/s | |
| lasx_32b (size=4096 ) passed 16383 times: 0.001935550 s total, 0.000000118 s per pass, 33063.519 MiB/s |
xen0n
/ check-new-world.tiny.s
Last active
September 2, 2025 06:37
Tiny helper checking for LoongArch new world UAPI
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| # SPDX-License-Identifier: GPL-2.0-or-later OR MIT | |
| # | |
| # how to build this: | |
| # | |
| # $ as -o check-new-world.tiny.o check-new-world.tiny.s | |
| # $ ld check-new-world.tiny.o -o check-new-world.tiny.tmp | |
| # $ objcopy -O binary --only-section=.blob ./check-new-world.tiny.tmp ./check-new-world.tiny | |
| .section ".blob", "aw", @progbits |
xen0n
/ gopherchina-2023-loong64.md
Last active
June 9, 2023 12:30
GopherChina 2023: loong64 presentation
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| package main | |
| import ( | |
| "fmt" | |
| "strings" | |
| ) | |
| func main() { | |
| x, y, z := "7️⃣🐮", "🎁👜🔰🎥🧋🌔🌽🧐🧄🍓🔆📌💜🦔🍻🌲", "🍨🚙🚱🥹📏🐋🧱💈🧯🐕💱🍜" |
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| # | |
| # Automatically generated file; DO NOT EDIT. | |
| # Linux/mips 4.7.0-ck1 Kernel Configuration | |
| # | |
| # | |
| # Gentoo Linux | |
| # | |
| CONFIG_GENTOO_LINUX=y | |
| CONFIG_GENTOO_LINUX_UDEV=y |
xen0n
/ make-dist.log
Created
December 19, 2016 17:50
Log of `make dist` after build triple filtering
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| Finished debug [unoptimized] target(s) in 0.0 secs | |
| Synchronizing submodule url for 'src/compiler-rt' | |
| Synchronizing submodule url for 'src/jemalloc' | |
| Synchronizing submodule url for 'src/liblibc' | |
| Synchronizing submodule url for 'src/llvm' | |
| Synchronizing submodule url for 'src/rt/hoedown' | |
| Synchronizing submodule url for 'src/rust-installer' | |
| HEAD is now at a8fc4c1 Merge pull request #28 from xen0n/preprocessor-firefighting | |
| HEAD is now at e058ca6 Change how the default zone is found | |
| HEAD is now at 0ac39c5 Auto merge of #462 - semarie:openbsd-i686-correct, r=alexcrichton |
xen0n
/ 0001-add-uksm-patch-ported-for-v4.5.patch
Created
June 6, 2016 08:29
[EXPERIMENTAL] UKSM ported to Linux 4.5
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| From 3e9afc3a63c3126ee55df341547319ee4a8ac498 Mon Sep 17 00:00:00 2001 | |
| From: Wang Xuerui <idontknw.wang@gmail.com> | |
| Date: Mon, 6 Jun 2016 16:20:23 +0800 | |
| Subject: [PATCH] add uksm patch ported for v4.5 | |
| --- | |
| Documentation/vm/00-INDEX | 2 + | |
| Documentation/vm/uksm.txt | 59 + | |
| fs/exec.c | 4 +- | |
| fs/proc/meminfo.c | 6 + |
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| failures: | |
| ---- [run-pass] run-pass/issue-28950.rs stdout ---- | |
| error: test run failed! | |
| status: signal: 11 | |
| command: /home/xenon/code/rust/build/x86_64-unknown-linux-gnu/test/run-pass/issue-28950.stage2-x86_64-unknown-linux-gnu | |
| stdout: | |
| ------------------------------------------ |
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| --- a/drivers/video/logo/logo_linux_clut224.ppm 2014-06-09 02:19:54.000000000 +0800 | |
| +++ b/drivers/video/logo/logo_linux_clut224.ppm 2014-08-21 20:07:31.729230596 +0800 | |
| @@ -1,5 +1,5 @@ | |
| P3 | |
| -# Standard 224-color Linux logo | |
| +# 224-color Minami Kotori bootup logo for Linux | |
| 80 80 | |
| 255 | |
| 0 0 0 0 0 0 0 0 0 0 0 0 | |
| @@ -11,8 +11,6 @@ |
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