[BUG] the syscall table is not used anymore

https://0xax.gitbooks.io/linux-insides/content/SysCall/linux-syscall-2.html
Looking at the "Initialization of the system calls table" section, it's quite misleading since the syscall table isn't used in newer kernel versions and the [arch/x86/entry/syscall_64.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/syscall_64.c) file is linked which looks different now, see https://github.com/torvalds/linux/blob/master/arch/x86/entry/syscall_64.c#L19.

该 issue 指向书中关于系统调用表初始化的特定章节。请查看 GitBook 中链接的章节，并将其与 Linux 内核仓库中的当前文件 arch/x86/entry/syscall_64.c 进行比较。确定哪些文本已过时，需要更新以反映系统调用表不再被使用。修复涉及编辑书籍内容，很可能是在 Markdown 或类似的源文件中。

由索引模型根据 Issue 内容生成。