Hi Ben, First, 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)
Second, 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. Thanks - Siva -----Original Message----- From: Benjamin Herrenschmidt [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 24, 2007 8:50 PM To: Siva Prasad Cc: [EMAIL PROTECTED]; linuxppc-embedded@ozlabs.org Subject: RE: PTE entries On Tue, 2007-04-24 at 20:34 -0700, Siva Prasad wrote: > Thanks Ben. > > I managed to fix this. I am working on how best we can rewrite the self > modifying code we have for create_hpte routine. I would prefer to read > from SDR1, than to hardcode (or self modify the code) the way it is done > now. > > Feel free to let me know what you think. Self-modifying allows better performances in that very critical code path... Why would you need to change that code anyway ? Ben. _______________________________________________ Linuxppc-embedded mailing list Linuxppc-embedded@ozlabs.org https://ozlabs.org/mailman/listinfo/linuxppc-embedded
