segdesc            43 mmu.h          #define SEG(type, base, lim, dpl) (struct segdesc)    \
segdesc            47 mmu.h          #define SEG16(type, base, lim, dpl) (struct segdesc)  \
segdesc             6 proc.h           struct segdesc gdt[NSEGS];   // x86 global descriptor table
segdesc            60 x86.h          struct segdesc;
segdesc            63 x86.h          lgdt(struct segdesc *p, int size)