Real-mode programs freely execute CLI and STI to control interrupts, PUSHF and POPF to manipulate flags, INT n for DOS and BIOS calls, and IN/OUT for hardware I/O. In normal protected mode, these instructions are privilege-checked -- they execute normally if the caller has sufficient privilege, and fault otherwise. The 386 can't simply let V86 tasks execute them freely -- a DOS program disabling interrupts would bring down the whole system -- but trapping on every INT 21h call would make V86 impractically slow.
1L nanoGPT, d=4, 2h
。关于这个话题，旺商聊官方下载提供了深入分析
Also: Why my favorite Linux distro is slowing down - and I'm thrilled about it。heLLoword翻译官方下载对此有专业解读
20+ curated newsletters
#include <time.h