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    SubjectRe: [PATCH 4.4 103/105] Revert "x86/mm/pat: Ensure cpa->pfn only contains page frame numbers"
    On Fri, Aug 24, 2018 at 10:08:28AM -0700, Roland Dreier wrote:
    > > See
    > > <https://lore.kernel.org/lkml/1512686629.18523.217.camel@codethink.co.uk/T/#u>.
    >
    > Thanks! I'm not using SGI UV and I'm not using kexec, so I guess I
    > sidestepped most of those issues. Greg, I think we need to unrevert
    > the cpa->pfn change (otherwise the L1TF fix probably gets pretty
    > messy) and I guess pull in the other patches that Ben mentions.

    Ok, so what patch should be reverted? I'm seeing other reports of
    problems all around this same area, but I can't figure out exactly what
    to do.

    Guenter, any ideas?

    thanks,

    greg k-h

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