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老师您好, 关于内存章节我有疑问 #11

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githubzijian opened this issue Jan 11, 2025 · 1 comment
Open

老师您好, 关于内存章节我有疑问 #11

githubzijian opened this issue Jan 11, 2025 · 1 comment

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@githubzijian
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关于 code/os/02-memanagement/page.c文件, 142 行的位置, page_alloc 函数的 page_i 变量,
用于标记内存是否使用的 bitmap, 为什么是从 HEAP_START 的位置开始分配而不是 heap_start_aligned 开始分配呢?
@unicornx
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HEAP_START 到 _heap_start_aligned 这一段内存也是可以用的呀，为什么不用呢？参考代码中的下面这段注释

image

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@unicornx @githubzijian