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    SubjectRe: Re : Re : Re : Re : sparsemem usage
    On Wed, 9 Aug 2006 14:19:01 +0000 (GMT)
    moreau francis <> wrote:

    > Not all arch have page_is_ram(). OK it should be easy to have but we will
    > need create new data structures to keep this info. The point is that it's
    > really easy for memory model such sparsemem to keep this info.
    > > Do you have a usage model in which we really care about the number of
    > > pages in the system to that level of accuracy?
    > >
    > show_mem(), which is arch specific, needs to report them. And some
    > implementations use only pfn_valid().

    BTW, ioresouce information (see kernel/resouce.c)

    [kamezawa@aworks Development]$ cat /proc/iomem | grep RAM
    00000000-0009fbff : System RAM
    000a0000-000bffff : Video RAM area
    00100000-2dfeffff : System RAM

    is not enough ?

    I think kdump depends on this resouce information to determine
    where should be dumped.


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      Last update: 2006-08-10 06:49    [W:0.021 / U:0.736 seconds]
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