Hi, Hope someone could answer to this question.. As some of you know, SRMMU(Sparc Reference MMU in Sparc V8) uses top 8, 6, 6 bits of the linear address as PGT, PMD, PTE table index. so PGDIR_SHIFT is 24 and PMD_SHIFT is 18, and PTE_SHIFT is 12. (page size 4096) These shift values are for getting the index to into each table. But in http://lxr.free-electrons.com/source/arch/sparc/include/asm/pgtable_32.h#L35 #define PMD_SHIFT 22. and in http://lxr.free-electrons.com/source/arch/sparc/include/asm/page_32.h#L84 typedef struct { unsigned long pmdv[16]; } pmd_t; Why is it like this? (those sources are for sparc) I'm having some confusion from this.. Could someone please explain it or give me a good reference about this? Best regards, Chan _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
