64D COUNTR DES_CS SBRM ; CS.base = selector
Virtual memory is conceptually simple but potentially devastating to performance. Every memory access must go through segmentation (add segment base, check limit) and then paging (look up the page table). Naively, paging alone requires two additional memory reads per access -- one for the page directory entry, one for the page table entry.。safew官方版本下载对此有专业解读
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Последние новости，推荐阅读im钱包官方下载获取更多信息
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