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解决了一下冲突,合进主线? @fslongjin cc

@Samuka007 @fslongjin cc 支持epoll了,但是测试程序在我那个分支,可以先把这个分支合进主线~

# 在basic-x64分支上面开发 https://github.com/oscomp/DragonOS/tree/comp/basic-x86

同时不知道具体原因,会偶发下面的 GDT 报错 ![Image](https://github.com/user-attachments/assets/069dc193-4895-4cd5-8b00-23eeb928d374)

[原本的测例](https://github.com/oscomp/testsuits-for-oskernel/tree/pre-2025/basic/user/src/oscomp)

可以改用busybox去启动 https://github.com/oscomp/DragonOS/blob/658756a2e9665f886672cb96842707c9ef86ffb0/tools/run-qemu.sh#L174

> ### brk.c > #### Linux行为 > ![Image](https://github.com/user-attachments/assets/e591453e-614b-4d57-a4bc-b00d9063f067) > > #### DragonOS行为 > ![Image](https://github.com/user-attachments/assets/30d81f95-a369-49ec-90bb-c7931aeb92f8) > > 估计就是没实现 > > ### dup.c > #### Linux行为 > ![Image](https://github.com/user-attachments/assets/07eae277-42b5-424a-a200-888f384ed12c) > > #### DragonOS行为...

[wait](https://github.com/oscomp/DragonOS/blob/fix-basic-x86/user/apps/oscomp/wait.c)的运行也会出现上面的问题

![Image](https://github.com/user-attachments/assets/022f6a05-6c74-4ace-83bf-d25539761999)