On Tue, May 13, 2003 at 09:52:44AM -0700, Jun Sun wrote: [snip] > I figured that out a while back. I think you can find answers in > arch/mips/kernel/setup.c, > > start_pfn = PFN_UP(__pa(&_end)); Strange I read that file many times, but for yet unknown reason never noticed __pa(&_end). That's what I call selective blindness :) > I think zero pages are allocated so that all future read-only zero-filled > pages can be mapped to them. They are allocated at the beginning of > start_pfn, which is also after kernel image. Thanks a lot for explanation, now I'm sure that MC based memory probing for IP22 will not break anything. Patch will come tomorrow. Ladis
