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    SubjectRe: [PATCH v7u1 21/31] x86, kexec: only set ident mapping for ram.
    On Sun, Jan 13, 2013 at 09:46:17PM -0800, Yinghai Lu wrote:
    > On Sun, Jan 13, 2013 at 4:56 AM, Borislav Petkov <bp@alien8.de> wrote:
    > > On Thu, Jan 03, 2013 at 04:48:41PM -0800, Yinghai Lu wrote:
    > >> We should not set mapping for all under max_pfn.
    > >
    > > "We should not establish mappings for all memory under max_pfn."
    >
    > that is not accurate.
    >
    > We should not set mapping for all range under max_pfn.
    >
    > or
    >
    > We should set mappings only for memory ranges under max_pfn.

    Ok, that last thing is getting close. So do I understand it correctly
    now:

    "We should establish mappings only for memory (memory which is not
    marked reserved or whatever by E820 or some other mechanism) under
    max_pfn."

    ?

    > >> That causes same problem that is fixed by
    > >
    > > "Otherwise, it causes the same ..."
    > >
    > >>
    > >> x86, mm: Only direct map addresses that are marked as E820_RAM
    > >
    > > You could add this patch's commit id since it is in tip:x86/mm2 and it
    > > shouldn't change: 66520ebc2df3.
    >
    > why ? they are not in linus tree yet, so it could change if that tip
    > branch is rebased.

    Oh, you didn't know: tip branches don't get rebased. At least almost
    never.

    --
    Regards/Gruss,
    Boris.

    Sent from a fat crate under my desk. Formatting is fine.
    --


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