x86

英文: What is the reason to extend page-directory-pointer-table base address in cr3 from 20 to 27 bits...

英文: x86 rep prefix with a count of zero: what happens? 问题 x86架构下的rep前缀初始计数为零会发生什么？ Intel手册明确指出这是一个带有...

英文: Having trouble finding the invalid memory access in my random number array sorting program 问题 在你...

英文: Will memory write be visible after sending an IPI on x86? 问题 我已经阅读了《Intel 64 和 IA-32 架构 SDM vol ...

英文: Sequentially consistent fence 问题 如果我使用 asm 编译器级别的 memory 屏障来执行 cpuid，这是否与顺序一致的屏障具有相同的行为？ 现在假设我执行...

英文: Code Hitting Some Kind of Hardware Performance Bottleneck With Different Struct Layouts of Same ...

英文: Why does the opcode for MOV from a segment register not have its low bit set? It's not 8-bit...

英文: Why is alignment on the stack for a struct with 1 member (char) handled differently than if the ...

英文: Assembly functions and labels that are jumped to; is 8-BYTE alignment necessary or not? 问题 In as...

英文: The machine restarts when it starts its own OS 问题 I am developing my OS from scratch on C. I hav...