On Tue, Nov 17, 2009 at 05:37:25PM +0800, figo zhang wrote: > > > so, if i set a page attrubite is PAGE_READONLY, this attribute will set > > to > > > pte , right? so , > > > why it should shift 6 bits? > > > > Thanks a lot. I am puzzle that if i set a page attrubite is PAGE_READONLY, > tlb_write_indexed() > will write the 6 bits to entrylo0 register? i am using 24KEC soc. Yes, tlb_write_indexed() does that. Equally tlb_write_random() writes a TLB entry into the TLB. Basically we use tlb_write_indexed() to overwrite and update an existing TLB entry. But if there is no TLB entry yet then we just use tlb_write_random() an allow the CPU to pick an arbitrary entry. Ralf
