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    SubjectRe: [PATCH] trim memory not covered by WB MTRRs
    On Mon, Jun 25, 2007 at 04:36:52PM -0700, Jesse Barnes wrote:
    > On Monday, June 25, 2007 4:34:33 Andi Kleen wrote:
    > > > This patch fixes a bug in the last patch that caused the code to
    > > > run on non-Intel machines (AMD machines apparently don't need it
    > >
    > > Actually the problem can happen on AMD too, but the symptoms can
    > > be different and there can be more wrong than just the MTRRs.
    >
    > I should have been more specific in the changelog. My understanding is
    > that AMD systems don't need it for memory above 4G, and since the code

    AMD systems need MTRRs to get cached memory too, or what is your point?

    There was a new memory remapping feature in RevE but I didn't think
    it obsoleted MTRRs.

    We've also had systems with this issue.

    -Andi
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