Siva Prasad writes: > Are there any other places where we have self modifying code in Linux > kernel, other than in arch/powerpc/mm/ppc_mmu_32.c:MMU_init_hw() > (basically modified create_hpte and flush_hash_page)
Yes, the cpu feature stuff writes nops over various bits of code depending on what cpu you're running on. See do_feature_fixups() in arch/powerpc/kernel/cputable.c. > Instead of using addis, why can't we move it from SDR1 register and mask > the second half. SDR1 has the required value. Right? > May be I am missing something here. mtspr is slow on most processors, certainly slower than addis. Paul. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
