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    SubjectRe: [regression] commit 6a4f3b52 causes invalid memtype
    On 07/05/2010 03:51 PM, Ali Gholami Rudi wrote:
    > Hi,
    >
    > In -rc4 kernel these messages appear in my dmesg (complete dmesg
    > at the end of this mail):
    >
    > [ 0.400777] swapper:1 freeing invalid memtype e0000000-e0040000
    > ...
    > [ 0.453489] swapper:1 freeing invalid memtype e0000000-e0010000
    > [ 0.453585] swapper:1 freeing invalid memtype e0041000-e0045000
    > [ 0.453673] swapper:1 freeing invalid memtype e0045000-e0049000
    > ...
    > [ 12.662571] fbpad:980 conflicting memory types e0049000-e0549000 uncached-minus<->write-combining
    > [ 12.662579] reserve_memtype failed 0xe0049000-0xe0549000, track uncached-minus, req uncached-minus
    > [ 13.303389] fbpad:980 map pfn expected mapping type uncached-minus for e0049000-e0549000, got write-combining
    >
    > The last 3 lines appear when mmap()ing nouveau framebuffer.
    >
    > I reverted this commit and everything seems ok once more:
    >
    > commit 6a4f3b523779b67e7d560ed42652f8a59f2f9782
    > Author: Venkatesh Pallipadi<venki@google.com>
    > Date: Thu Jun 10 17:45:01 2010 -0700
    >
    > x86, pat: Proper init of memtype subtree_max_end
    >
    > Thanks,
    > Ali

    Could you please try following commit in -tip tree?

    commit 2463eb8b3093995e09a0d41b3d78ee0cf5fb4249
    Author: Peter Zijlstra <peterz@infradead.org>
    Date: Sat May 29 15:31:43 2010 +0200

    rbtree: Undo augmented trees performance damage

    Thanks
    Xiaotian


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